| innovative bionanocomposite films of edible proteins containing liposome-encapsulated nisin and halloysite nanoclay. | films and coatings based on natural polymers have gained increased interest for food packaging applications. in this work, halloysite and phosphatidylcholine liposomes encapsulating nisin were used to develop nanocomposite films of gelatin and casein. liposomes prepared with either soybean lecithin or phospholipon(®) showed particle size ranging from 124 to 178nm and high entrapment efficiency (94-100%). considering their stability, phospholipon(®) liposomes with 1.0mg/ml nisin were selected for ... | 2016 | 27289315 |
| the impact of oxygen on bacterial enteric pathogens. | bacterial enteric pathogens are responsible for a tremendous amount of foodborne illnesses every year through the consumption of contaminated food products. during their transit from contaminated food sources to the host gastrointestinal tract, these pathogens are exposed and must adapt to fluctuating oxygen levels to successfully colonize the host and cause diseases. however, the majority of enteric infection research has been conducted under aerobic conditions. to raise awareness of the import ... | 2016 | 27261784 |
| potential antimicrobial and antiproliferative activities of autochthonous starter cultures and protease epg222 in dry-fermented sausages. | this work studied the presence of nitrogen compounds with bioactive properties in iberian pork sausages that were manufactured using different autochthonous starter cultures (pediococcus acidilactici ms200 and staphylococcus vitulus rs34) and protease epg222. nitrogen compounds were extracted and evaluated for their antimicrobial effect against spoilage and pathogenic bacteria, such as bacillus cereus, escherichia coli, salmonella choleraesuis, staphylococcus aureus and listeria monocytogenes, a ... | 2016 | 27112426 |
| chemical composition, antioxidant and antibacterial activities of essential oils from ferulago angulata. | ferulago angulata boiss. (apiaceae), a perennial aromatic herb, grows wild in iran. the aerial parts of f. angulata are used as a flavouring in foods, especially dairy foods by indigenous people in western and southwestern iran. | 2016 | 27102982 |
| recombinant broad-range phospholipase c from listeria monocytogenes exhibits optimal activity at acidic ph. | the broad-range phospholipase c (plc) from listeria monocytogenes has been expressed using an intein expression system and characterized. this zinc metalloenzyme, similar to the homologous enzyme from bacillus cereus, targets a wide range of lipid substrates. with monomeric substrates, the length of the hydrophobic acyl chain has significant impact on enzyme efficiency by affecting substrate affinity (km). based on a homology model of the enzyme to the b. cereus protein, several active site resi ... | 2016 | 26976751 |
| application of mathematical models for bacterial inactivation curves using hypericin-based photosensitization. | the aim of this study was to evaluate which of the three mathematical models (weibull, geeraerd and logistic) makes the best approximation for hypericin-based photosensitization bacterial inactivation. | 2016 | 26972682 |
| isolation and structural elucidation of brevibacillin, an antimicrobial lipopeptide from brevibacillus laterosporus that combats drug-resistant gram-positive bacteria. | a new environmental bacterial strain exhibited strong antimicrobial characteristics against methicillin-resistant staphylococcus aureus, vancomycin-resistant strains of enterococcus faecalis and lactobacillus plantarum, and other gram-positive bacteria. the producer strain, designated osy-i1, was determined to be brevibacillus laterosporusvia morphological, biochemical, and genetic analyses. the antimicrobial agent was extracted from cells of osy-i1 with isopropanol, purified by high-performance ... | 2016 | 26921428 |
| influence of season and type of restaurants on sashimi microbiota. | in recent years, an increase in the consumption of japanese food in european countries has been verified, including in portugal. these specialities made with raw fish, typical japanese meals, have been prepared in typical and on non-typical restaurants, and represent a challenge to risk analysis on haccp plans. the aim of this study was to evaluate the influence of the type of restaurant, season and type of fish used on sashimi microbiota. | 2016 | 26911490 |
| understanding the antimicrobial activity behind thin- and thick-rolled copper plates. | the aim of this study was to compare the antibacterial properties of the surfaces of copper plates that were rolled to a thickness of 25 and 100 μm. differences in topology of 25- and 100-μm-thick copper plates were studied using scanning electron microscopy (sem), atomic force microscopy (afm), and x-ray diffraction (xrd). antibacterial activity of the copper surfaces was tested against strains of staphylococcus aureus, escherichia coli, klebsiella pneumoniae, pseudomonas aeruginosa, listeria m ... | 2016 | 26860943 |
| evaluation of probiotic properties of lactobacillus plantarum wlpl04 isolated from human breast milk. | lactobacillus plantarum wlpl04, a specific strain isolated from human breast milk, was investigated for its survival capacity (acid and bile salt tolerance, survival in simulated gastrointestinal tract, inhibition of pathogens, antibiotic susceptibility, yield of exopolysaccharides) and probiotic properties (antiadhesion of pathogens, protection from harmful effect of sodium dodecyl sulfate, and antiinflammatory stress on caco-2 cells). the results showed that lb. plantarum wlpl04 had broad-spec ... | 2016 | 26805974 |
| characterization of antimicrobial lipopeptides produced by bacillus sp. lm7 isolated from chungkookjang, a korean traditional fermented soybean food. | a wild-type microorganism exhibiting antimicrobial activities was isolated from the korean traditional fermented soybean food chungkookjang and identified as bacillus sp. lm7. during its stationary growth phase, the microorganism secreted an antimicrobial substance, which we partially purified using a simple two-step procedure involving ammonium sulfate precipitation and heat treatment. the partially purified antimicrobial substance, anti-lm7, was stable over a broad ph range (4.0-9.0) and at te ... | 2016 | 26803269 |
| antimicrobial effects of marine algal extracts and cyanobacterial pure compounds against five foodborne pathogens. | the marine environment is a proven source of structurally complex and biologically active compounds. in this study, the antimicrobial effects of a small collection of marine-derived extracts and isolates, were evaluated against 5 foodborne pathogens using a broth dilution assay. results demonstrated that algal extracts from padina and ulva species and cyanobacterial compounds antillatoxin b, laxaphycins a, b and b3, isomalyngamide a, and malyngamides c, i and j showed antimicrobial activity agai ... | 2016 | 26775951 |
| advanced molecular diagnostic techniques for detection of food-borne pathogens; current applications and future challenges. | the elimination of disease-causing microbes from the food supply is a primary goal and this review deals with the overall techniques availavle for detection of food-borne pathogens. now-a-days conventional methods are replaced by advanced methods like biosensors, nucleic acid-based tests (nat) and different pcr based techniques used in molecular biology to identify specific pathogens. bacillus cereus, staphylococcus aureus, proteus vulgaris, escherichia coli, campylobacter, listeria monocytogene ... | 2016 | 26745757 |
| safety of street-vended soy wara in nigeria. | soy wara is a common ready-to-eat food whose production and sale are currently unregulated. microbiological sampling indicated that 21% of the samples had standard plate counts exceeding 100,000 cfu/g, and 14% had staphylococcus aureus counts higher than 100,000 cfu/g. the occurrence of s. aureus at these levels can result in food poisoning. listeria monocytogenes was isolated in 14.4% of the samples, although the counts were generally low, typically <1,000 cfu/g. although counts of l. monocytog ... | 2016 | 26735046 |
| evaluation of anti-bacterial effects of some novel thiazole and imidazole derivatives against some pathogenic bacteria. | bacterial resistance to antibiotics has motivated the researchers to evaluate the novel anti-bacterial compounds such as some thiazole and imidazole derivatives. thereby, in this work, we investigated the anti-bacterial effects of one new thiazole and two new imidazole derivatives on bacillus cereus, listeria monocytogenes, escherichia coli, salmonella typhimurium, proteus mirabilis and shigella dysenteriae. | 2015 | 26719785 |
| comparison of primary models to predict microbial growth by the plate count and absorbance methods. | the selection of a primary model to describe microbial growth in predictive food microbiology often appears to be subjective. the objective of this research was to check the performance of different mathematical models in predicting growth parameters, both by absorbance and plate count methods. for this purpose, growth curves of three different microorganisms (bacillus cereus, listeria monocytogenes, and escherichia coli) grown under the same conditions, but with different initial concentrations ... | 2015 | 26539483 |
| inactivation of bacterial pathogens in yoba mutandabota, a dairy product fermented with the probiotic lactobacillus rhamnosus yoba. | mutandabota is a dairy product consumed as a major source of proteins and micronutrients in southern africa. in this study the microbial safety of traditional and a variant of mutandabota fermented with the probiotic lactobacillus rhamnosus yoba (yoba mutandabota) was investigated by challenging the products with five important food pathogens: listeria monocytogenes, salmonella spp., campylobacter jejuni, escherichia coli o157:h7 and bacillus cereus. pasteurized full-fat cow's milk was used for ... | 2016 | 26490648 |
| enteric bacteria isolated from diarrheal patients in korea in 2014. | the aim of this study was to characterize the pathogens responsible for causing diarrhea according to season, region of isolation, patient age, and sex as well as to provide useful data for the prevention of diarrheal disease. | 2015 | 26473090 |
| total phenolic and flavonoid content and antibacterial activity of punica granatum l. var. pleniflora flowers (golnar) against bacterial strains causing foodborne diseases. | flowers of punica granatum l. (punicaceae) var. pleniflora, known as "golnar" in iranian traditional medicine have been used for the prevention and treatment of foodborne diseases. in this study, antibacterial activities of ethanol extract of golnar and its fractions were scientifically evaluated against bacteria causing foodborne diseases including staphylococcus aureus, bacillus cereus, listeria monocytogenes, escherichia coli, shigella dysantriae, and salmonella typhi. the total phenolic and ... | 2015 | 26470879 |
| isolation and characterization of bacteriocinogenic lactic bacteria from m-tuba and tepache, two traditional fermented beverages in méxico. | mexican tuba (m-tuba) and tepache are mexican fermented beverages prepared mainly with pineapple pulp and coconut palm, respectively. at present, reports on the microbiota and nutritional effects of both beverages are lacking. the purpose of this study was to determine whether m-tuba and tepache contain cultivable lactic acid bacteria (lab) capable of producing bacteriocins. tepache and m-tuba contain mesophilic aerobic bacteria, lab, and yeast. bacillus subtilis, listeria monocytogenes, listeri ... | 2015 | 26405529 |
| antibacterial effect and mechanism of high-intensity 405 ± 5 nm light emitting diode on bacillus cereus, listeria monocytogenes, and staphylococcus aureus under refrigerated condition. | this study investigated the antibacterial effect of 405 ± 5 nm light emitting diode (led) on bacillus cereus, listeria monocytogenes, and staphylococcus aureus, and examined its antibacterial mechanism by determining the bacterial membrane and dna damages. a 405 ± 5 nm led illuminated the gram-positive pathogens until 486 j/cm(2) at 4 °c. weibull model was used to calculate reliable life (tr) to compare bacterial sensitivities to led illumination. the membrane damage was determined by nacl and l ... | 2015 | 26398810 |
| chemical composition and in vitro antibacterial activity of mentha spicata essential oil against common food-borne pathogenic bacteria. | the aim of the present study was to investigate chemical composition and antibacterial activity of essential oil from the leaf of mentha spicata plant against common food-borne pathogenic bacteria (staphylococcus aureus, bacillus subtilis, bacillus cereus, listeria monocytogenes, salmonella typhimurium, and escherichia coli o157:h7). chemical composition of the essential oil was identified by gas chromatography coupled with mass spectrometer detector (gc-ms). the antibacterial activity of the es ... | 2015 | 26351584 |
| reduction of listeria monocytogenes and bacillus cereus in milk by zinc oxide nanoparticles. | direct addition of antimicrobial materials to food during food processing is an effective method for controlling microbial contaminants of food and extending the shelf- life of food products. objective of this research was to study the antimicrobial effect of zinc oxide (zno) nanoparticle and potential applications of zno nanoparticles in terms of controling two food-borne pathogens in milk. | 2015 | 26351469 |
| a study on characterization of new bacteriocin produced from a novel strain of lactobacillus spicheri g2 isolated from gundruk- a fermented vegetable product of north east india: a novel bacteriocin production from lactobacillus spicheri g2. | bacteriocin producing lactobacillus spicheri g2, isolated from gundruk - a traditional fermented vegetable product of north east india. l. spicheri g2 identified by morphological, biochemical techniques followed by 16s rrna gene technique. the 16sr rna sequence of bacteriocin producer is registered in ncbi under accession no. jx481912. the bacteriocin producing potential of l. spicheri is being reported for the first time in the present investigation. bacteriocin of l. spicheri g2 showed strong ... | 2015 | 26344995 |
| antibacterial effects and action modes of asiatic acid. | in this study, the antibacterial effects and action modes of asiatic acid against the foodborne bacterial pathogens escherichia coli o157:h7, salmonella typhimurium dt104, pseudomonas aeruginosa, listeria monocytogenes, staphylococcus aureus, enterococcus faecalis, and bacillus cereus were examined. minimal inhibitory concentrations (mics) of asiatic acid against these bacteria were in the range of 20-40 μg/ml. minimum bactericidal concentrations of asiatic acid were in the range of 32-52 μg/ml. ... | 2015 | 26280399 |
| stability, antimicrobial activity, and effect of nisin on the physico-chemical properties of fruit juices. | heat processing is the most commonly used hurdle for inactivating microorganisms in fruit juices. however, this preservation method could interfere with the organoleptic characteristics of the product. alternative methods have been proposed and bacteriocins such as nisin are potential candidates. however, the approval of bacteriocins as food additives is limited, especially in foods from vegetal origin. we aimed to verify the stability, the effect on physico-chemical properties, and the antimicr ... | 2015 | 26162590 |
| evaluation of synergistic antibacterial and antioxidant efficacy of essential oils of spices and herbs in combination. | the present study was carried out to evaluate the possible synergistic interactions on antibacterial and antioxidant efficacy of essential oils of some selected spices and herbs [bay leaf, black pepper, coriander (seed and leaf), cumin, garlic, ginger, mustard, onion and turmeric] in combination. antibacterial combination effect was evaluated against six important food-borne bacteria (bacillus cereus, listeria monocytogenes, micrococcus luteus, staphylococcus aureus, escherichia coli and salmone ... | 2015 | 26132146 |
| antimicrobial mechanism of resveratrol-trans-dihydrodimer produced from peroxidase-catalyzed oxidation of resveratrol. | plant polyphenols are known to have varying antimicrobial potencies, including direct antibacterial activity, synergism with antibiotics and suppression of bacterial virulence. we performed the in vitro oligomerization of resveratrol catalyzed by soybean peroxidase, and the two isomers (resveratrol-trans-dihydrodimer and pallidol) produced were tested for antimicrobial activity. the resveratrol-trans-dihydrodimer displayed antimicrobial activity against the gram-positive bacteria bacillus cereus ... | 2015 | 26109045 |
| a novel suicide plasmid for efficient gene mutation in listeria monocytogenes. | although several plasmids have been used in listeria monocytogenes for generating mutants by allelic exchange, construction of l. monocytogenes mutants has been inefficient due to lack of effective selection markers for first and second recombination events. to address this problem, we have developed a new suicide plasmid, phoss1, by using the pmad plasmid backbone and anhydrotetracycline selection marker (secy antisense rna) driven by an inducible pxyl/teto promoter. expression of the secy anti ... | 2015 | 26038185 |
| kinetics of bacterial inactivation by 405nm and 520nm light emitting diodes and the role of endogenous coproporphyrin on bacterial susceptibility. | photodynamic inactivation studies of microbial pathogens have focused on the use of an external photosensitizer or a precursor compound to eliminate bacteria. the present study investigated the inactivation kinetics of six bacterial pathogens by a 405nm light emitting diode (led) without the addition of any external compound. the role of endogenous coproporphyrin on the bacterial susceptibility to leds was also examined. pathogens were illuminated with leds at 25, 10 and 4°c for 9h and the inact ... | 2015 | 26036659 |
| isolation of lactic acid bacteria showing antioxidative and probiotic activities from kimchi and infant feces. | the purpose of this study was to investigate lactic acid bacteria with antioxidative and probiotic activities isolated from korean healthy infant feces and kimchi. isolates a1, a2, s1, s2, and s3 were assigned to lactobacillus sp. and isolates a3, a4, e1, e2, e3, and e4 were assigned to leuconostoc sp. on the basis of their physiological properties and 16s ribosomal dna sequence analysis. most strains were confirmed as safe bioresources through nonhemolytic activities and non-production of harmf ... | 2015 | 25951843 |
| bactericidal mechanism of bio-oil obtained from fast pyrolysis of pinus densiflora against two foodborne pathogens, bacillus cereus and listeria monocytogenes. | foodborne bacteria are the leading cause of food spoilage and other related diseases. in the present study, the antibacterial activity of bio-oil (bo) manufactured by fast pyrolysis of pinewood sawdust (pinus densiflora siebold and zucc.) against two disease-causing foodborne pathogens (bacillus cereus and listeria monocytogenes) was evaluated. bo at a concentration of 1000 μg/disc was highly active against both b. cereus (10.0-10.6 mm-inhibition zone) and l. monocytogenes (10.6-12.0-mm inhibiti ... | 2015 | 25928035 |
| microbiological diversity and prevalence of spoilage and pathogenic bacteria in commercial fermented alcoholic beverages (beer, fruit wine, refined rice wine, and yakju). | the present study examined 469 commercially available fermented alcoholic beverages (fabs), including beer (draft, microbrewed, and pasteurized), fruit wine (grape and others), refined rice wine, and yakju (raw and pasteurized). samples were screened for escherichia coli and eight foodborne pathogens (bacillus cereus, campylobacter jejuni, clostridium perfringens, escherichia coli o157:h7, listeria monocytogenes, salmonella spp., staphylococcus aureus, and yersinia enterocolitica), and the aerob ... | 2015 | 25836410 |
| expert elicitation as a means to attribute 28 enteric pathogens to foodborne, waterborne, animal contact, and person-to-person transmission routes in canada. | enteric illness contributes to a significant burden of illness in canada and globally. understanding its sources is a critical step in identifying and preventing health risks. expert elicitation is a powerful tool, used previously, to obtain information about enteric illness source attribution where information is difficult or expensive to obtain. thirty-one experts estimated transmission of 28 pathogens via major transmission routes (foodborne, waterborne, animal contact, person-to-person, and ... | 2015 | 25835810 |
| antimicrobial activities of active component isolated from lawsonia inermis leaves and structure-activity relationships of its analogues against food-borne bacteria. | the antimicrobial activities of lawsonia inermis leaf extract and 2-hydroxy-1,4-naphthoquinone analogues against food-borne bacteria. the antimicrobial activities of five fractions derived from the methanol extract of lawsonia inermis leaves were evaluated against 7 food-borne bacteria. 2-hydroxy-1,4-naphthoquinone was isolated by chromatographic analyses. 2-hydroxy-1,4-naphthoquinone showed the strong activities against bacillus cereus, listeria monocytogenes, salmonella enterica, shigella sonn ... | 2015 | 25829631 |
| lactic acid bacteria: promising supplements for enhancing the biological activities of kombucha. | kombucha is sweetened black tea that is fermented by a symbiosis of bacteria and yeast embedded within a cellulose membrane. it is considered a health drink in many countries because it is a rich source of vitamins and may have other health benefits. it has previously been reported that adding lactic acid bacteria (lactobacillus) strains to kombucha can enhance its biological functions, but in that study only lactic acid bacteria isolated from kefir grains were tested. there are many other natur ... | 2015 | 25763303 |
| the length of a lantibiotic hinge region has profound influence on antimicrobial activity and host specificity. | lantibiotics are ribosomally synthesized (methyl)lanthionine containing peptides which can efficiently inhibit the growth of gram-positive bacteria. as lantibiotics kill bacteria efficiently and resistance to them is difficult to be obtained, they have the potential to be used in many applications, e.g., in pharmaceutical industry or food industry. nisin can inhibit the growth of gram-positive bacteria by binding to lipid ii and by making pores in their membrane. the c-terminal part of nisin is ... | 2015 | 25688235 |
| phenolic acids profile, antioxidant and antibacterial activity of chamomile, common yarrow and immortelle (asteraceae). | chamomile, common yarrow and immortelle ethanolic extracts were chemically analysed with respect to phenolics. twelve phenolic acids were separated and identified by hplc-dad and the presence of rosmarinic acid was additionally confirmed by lc-ms. five methods were applied for the evaluation of extracts' antioxidant properties (frap, dpph, abts, chelating activity, briggs-rauscher reaction), while the antibacterial activity was tested against some of the major food-borne pathogens (campylobacter ... | 2014 | 25632475 |
| evaluation of haccp system implementation on the quality of mixed fresh-cut salad prepared in a university canteen: a case study. | the increasing awareness that foods can represent vehicles for health risk factors has caused scientists and public authorities to multiply their efforts to reduce these risks to within acceptable limits. nevertheless, some challenging issues still remain unsolved and new ones have recently emerged, such as the increase in outbreaks of foodborne diseases originating from the consumption of meals at catering facilities. the study described in this article was aimed at evaluating the microbiologic ... | 2015 | 25619040 |
| effects of climate change on the persistence and dispersal of foodborne bacterial pathogens in the outdoor environment: a review. | according to the intergovernmental panel on climate change (ipcc), warming of the climate system is unequivocal. over the coming century, warming trends such as increased duration and frequency of heat waves and hot extremes are expected in some areas, as well as increased intensity of some storm systems. climate-induced trends will impact the persistence and dispersal of foodborne pathogens in myriad ways, especially for environmentally ubiquitous and/or zoonotic microorganisms. animal hosts of ... | 2016 | 25612827 |
| antimicrobial potential of cauliflower, broccoli, and okara byproducts against foodborne bacteria. | the antimicrobial potential of cauliflower, broccoli, and okara byproducts was assessed against gram-positive and gram-negative bacteria. salmonella enterica serovar typhimurium, escherichia coli o157:h7, bacillus cereus, and listeria monocytogenes serovar 4b growth behavior was assessed under exposure to 5% vegetable byproducts added to the reference medium, buffered peptone water (0.1% [wt/vol]), at 37°c. although the byproducts were not effective against l. monocytogenes, they were bactericid ... | 2015 | 25587927 |
| microbiological quality of seasoned roasted laver and potential hazard control in a real processing line. | microbiological quality of laver, one of the edible seaweeds, has not been reported in a real processing line. laver or supplements were collected from six manufacturers (a to f) to assess potential microbiological hazards and the critical control points in commercial processing lines. aerobic plate counts (apc), coliform counts, bacillus cereus, staphylococcus aureus, and vibrio parahaemolyticus were enumerated, and the presence of b. cereus, listeria monocytogenes, salmonella, s. aureus, and v ... | 2014 | 25474052 |
| effect of white mustard essential oil on the growth of foodborne pathogens and spoilage microorganisms and the effect of food components on its efficacy. | antimicrobial preservative compounds are added to foods to target specific pathogens and spoilage organisms. white mustard essential oil (wmeo) is an extract that contains 4-hydroxybenzyl isothiocyanate, a compound which has been demonstrated to have antimicrobial activity in limited studies. the objective of this research was to determine the in vitro antimicrobial activity of wmeo against gram-positive and gram-negative spoilage and pathogenic bacteria and determine the effect of food componen ... | 2014 | 25474051 |
| effect of packaging technology on microbiological and sensory quality of a cooked blood sausage, morcela de arroz, from monchique region of portugal. | morcela de arroz (ma), a popular portuguese blood sausage, with high ph and water activity (aw), is traditionally commercialized without preservatives and unpacked. this study evaluated the best packaging solution to extend ma shelf life stored at 4±1°c for 44days: without packaging (wp), vacuum (vp) and modified atmosphere packaging (map) (80% co2; 20% n2). mesophilic (mtvc), psychrotrophic (ptvc), lactic acid bacteria (lab), pseudomonads, molds and yeasts, enterobacteriaceae, listeria monocyto ... | 2015 | 25462380 |
| antibacterial activity and genotypic-phenotypic characteristics of bacteriocin-producing bacillus subtilis kku213: potential as a probiotic strain. | the antimicrobial activity and probiotic properties of bacillus subtilis strain kku213, isolated from local soil, were investigated. the cell-free supernatant (cfs) of a kku213 culture containing crude bacteriocins exhibited inhibitory effects on gram-positive bacteria, including bacillus cereus, listeria monocytogenes, micrococcus luteus, and staphylococcus aureus. the antibacterial activity of the cfs precipitated with 40% ammonium sulfate (as) remained even after treatment at 60 and 100 °c, a ... | 2015 | 25440998 |
| synthesis, characterization and antibacterial activity of biodegradable films prepared from schiff bases of zein. | pure zein is known to be very hydrophobic, but is still inappropriate for coating and film applications because of their brittle nature. in an attempt to improve the flexibility and the antimicrobial activity of these coatings and films, chemical modification of zein through forming schiff bases with different phenolic aldhydes was tried. influence of this modifications on mechanical, topographical, wetting properties and antimicrobial activity of zein films were evaluated. the chemical structur ... | 2014 | 25328181 |
| antioxidant and antibacterial activities of exopolysaccharides from bifidobacterium bifidum wbin03 and lactobacillus plantarum r315. | the objective of this study was to investigate the antioxidant and antibacterial activities of exopolysaccharide (eps) from bifidobacterium bifidum wbin03 (b-eps) and lactobacillus plantarum r315 (l-eps). the 1,1-diphenyl-2-picrylhydrazyl (dpph)-radical scavenging, hydroxyl radical-scavenging, and superoxide radical-scavenging abilities were measured to evaluate antioxidant activity. inhibition of erythrocyte hemolysis and lipid peroxidation was also measured. both b-eps and l-eps had strong sca ... | 2014 | 25282420 |
| reducing pathogens by using zinc oxide nanoparticles and acetic acid in sheep meat. | practical applications of different concentrations (0, 1, 2, 4, 6, and 8 mm) of zinc oxide (zno) suspensions containing 1 % acetic acid were investigated against the pathogenic bacteria listeria monocytogenes, escherichia coli, staphylococcus aureus, and bacillus cereus. zno suspensions (0, 1, 3, 6, and 8 mm) containing acetic acid had a significant inhibitory effect on the growth of l. monocytogenes, e. coli, and s. aureus during 12 h of incubation, and the 8 mm suspensions of zno were the most ... | 2014 | 25198854 |
| bacteriological quality of vegetables from organic and conventional production in different areas of korea. | foods grown in organic production systems have been described as representing an increased risk to public health compared with foods from conventional production. leafy vegetables (spinach, romaine lettuce, and green sesame leaves) grown in organic and conventional systems were collected from various areas in korea and examined using standard culture methods to compare the microbiological quality of the produce grown in the two agricultural systems. the 354 samples of these leafy vegetables were ... | 2014 | 25198606 |
| biosynthesis of silver nanoparticles using lingonberry and cranberry juices and their antimicrobial activity. | in this study lingonberry and cranberry juices were used for silver nanoparticle synthesis. the berry juices were characterized by total phenolics, total anthocyanins and benzoic acid content, respectively 1.9-2.7mg/ml, 55.2-83.4mg/l and 590.8-889.2mg/l. the synthesis of silver nanoparticles was performed at room temperature assisting in solutions irradiated by ultraviolet for 30min. ultraviolet-visible (uv-vis) spectroscopy and microscopy confirmed the formation of nanoparticles as well as the ... | 2014 | 24988412 |
| characterization of wastewater effluents releasing from slaughterhouses in and around hyderabad city (india). | the present study was undertaken to determine the pollution load to the environment causing by the wastewater effluents releasing from organized and unorganized slaughterhouses in and around hyderabad city. the wastewater effluents collected from three slaughterhouses, at the sites of releasing out to the surrounding environment,were characterized in terms of physico-chemical and microbiological parameters. the physico-chemical parameters, such as temperature, ph, alkalinity, turbidity, total su ... | 2014 | 26563081 |
| antibacterial, antiviral, and antifungal properties of wines and winery byproducts in relation to their flavonoid content. | grapes produce organic compounds that may be involved in the defense of the plants against invading phytopathogens. these metabolites include numerous phenolic compounds that are also active against human pathogens. grapes are used to produce a variety of wines, grape juices, and raisins. grape pomace, seeds, and skins, the remains of the grapes that are a byproduct of winemaking, also contain numerous bioactive compounds that differ from those found in grapes and wines. this overview surveys an ... | 2014 | 24945318 |
| toxin production and growth of pathogens subjected to temperature fluctuations simulating consumer handling of cold cuts. | it is crucial for the quality and safety of ready-to-eat (rte) foods to maintain the cold chain from production to consumption. the effect of temperature abuse related to daily meals and elevated refrigerator temperatures on the growth and toxin production of bacillus cereus, bacillus weihenstephanensis and staphylococcus aureus and the growth of listeria monocytogenes and yersinia enterocolitica was studied. a case study with temperature loggings in the domestic environment during easter and ch ... | 2014 | 24935689 |
| development of 23 individual taqman® real-time pcr assays for identifying common foodborne pathogens using a single set of amplification conditions. | most of the acute intestinal diseases are caused by foodborne pathogens with infants and elderly people being at major risk. the aim of this study was to develop a procedure to simultaneously detect 20 foodborne pathogens in complex alimentary matrices such as milk, cheese and meat. the list of targets include, among the others, listeria spp., salmonella spp., shigella spp., escherichia coli spp., campylobacter spp., clostridium spp. and staphylococcus aureus. the accuracy of detection was deter ... | 2014 | 24929880 |
| evaluation of indirect impedance for measuring microbial growth in complex food matrices. | the suitability of indirect impedance to accurately measure microbial growth in real food matrices was investigated. a variety of semi-solid and liquid food products were inoculated with bacillus cereus, listeria monocytogenes, staphylococcus aureus, lactobacillus plantarum, pseudomonas aeruginosa, escherichia coli, salmonella enteriditis, candida tropicalis or zygosaccharomyces rouxii and co2 production was monitored using a conductimetric (don whitely r.a.b.i.t.) system. the majority (80%) of ... | 2014 | 24929710 |
| radiation-treated ready-to-eat (rte) chicken breast adobo for immuno-compromised patients. | usually in hospitals low-bacterial diets are served to immuno-compromised patients (icps). however, low-bacterial diets still pose a high risk of microbial infections and limit the food selection of the patients. thus, pathogen-free dishes must be made available. this study presents the development of pathogen-free ready-to-eat (rte) filipino ethnic food chicken breast adobo, sterilized by exposure to high-dose gamma rays (25 kgy) in combination with conventional treatments. frozen vacuum-packed ... | 2014 | 24912709 |
| bactericidal thurincin h causes unique morphological changes in bacillus cereus f4552 without affecting membrane permeability. | thurincin h is an antilisterial bacteriocin produced by bacillus thuringiensis sf361. it exhibits inhibitory activity against a wide range of gram-positive foodborne pathogens and spoilage bacteria including listeria monocytogenes, b. cereus, and b. subtilis. this hydrophobic, anionic bacteriocin folds into a hairpin structure maintained by four pairs of unique sulfur to α-carbon thioether bonds. as its hydrophobicity and structure are quite different from most archived bacteriocins, this study ... | 2014 | 24891232 |
| biosynthesis of silver nanoparticles using acacia leucophloea extract and their antibacterial activity. | the immense potential of nanobiotechnology makes it an intensely researched field in modern medicine. green nanomaterial synthesis techniques for medicinal applications are desired because of their biocompatibility and lack of toxic byproducts. we report the toxic byproducts free phytosynthesis of stable silver nanoparticles (agnps) using the bark extract of the traditional medicinal plant acacia leucophloea (fabaceae). visual observation, ultraviolet-visible spectroscopy, and transmission elect ... | 2014 | 24876776 |
| a multiplex pcr assay for simultaneous detection of escherichia coli o157:h7, bacillus cereus, vibrio parahaemolyticus, salmonella spp., listeria monocytogenes, and staphylococcus aureus in korean ready-to-eat food. | a multiplex polymerase chain reaction (pcr) assay was developed for simultaneous detection of escherichia coli o157:h7, bacillus cereus, vibrio parahaemolyticus, salmonella spp., listeria monocytogenes, and staphylococcus aureus in various korean ready-to-eat foods. the six specific primer pairs for multiplex pcr were selected based on the o157 antigen (rfbe) gene of e. coli o157:h7, the dna gyrase subunit b (gyrb) gene of b. cereus, the toxin regulatory protein (toxr) gene of v. parahaemolyticu ... | 2014 | 24796416 |
| in vitro evaluation of antimicrobial features of vasopressors. | drugs administered as intravenous infusion may be contaminated during several stages of production or preparation. however studies focusing on antibacterial effects of vasopressor drugs are very rare. this study investigates the in vitro antimicrobial activity of the clinically used forms of vasopressors. | 2014 | 24794449 |
| a rifamycin inactivating phosphotransferase family shared by environmental and pathogenic bacteria. | many environmental bacteria are multidrug-resistant and represent a reservoir of ancient antibiotic resistance determinants, which have been linked to genes found in pathogens. exploring the environmental antibiotic resistome, therefore, reveals the diversity and evolution of antibiotic resistance and also provides insight into the vulnerability of clinically used antibiotics. in this study, we describe the identification of a highly conserved regulatory motif, the rifampin (rif) -associated ele ... | 2014 | 24778229 |
| phytochemistry and preliminary assessment of the antibacterial activity of chloroform extract of amburana cearensis (allemão) a.c. sm. against klebsiella pneumoniae carbapenemase-producing strains. | the chloroform extract of the stem bark of amburana cearensis was chemically characterized and tested for antibacterial activity.the extract was analyzed by gas chromatography and mass spectrometry. the main compounds identified were 4-methoxy-3-methylphenol (76.7%), triciclene (3.9%), α -pinene (1.0%), β -pinene (2.2%), and 4-hydroxybenzoic acid (3.1%). preliminary antibacterial tests were carried out against species of distinct morphophysiological characteristics: escherichia coli, salmonella ... | 2014 | 24772183 |
| water-based oligochitosan and nanowhisker chitosan as potential food preservatives for shelf-life extension of minced pork. | water-based chitosans in the forms of oligochitosan (oligocs) and nanowhisker chitosan (cswk) are proposed as a novel food preservative based on a minced pork model study. the high surface area with a positive charge over the neutral ph range (ph 5-8) of oligocs and cswk lead to an inhibition against gram-positive (staphylococcus aureus, listeria monocytogenes, and bacillus cereus) and gram-negative microbes (salmonella enteritidis and escherichia coli o157:h7). in the minced pork model, oligocs ... | 2014 | 24767083 |
| survival of foodborne pathogenic bacteria (bacillus cereus, escherichia coli o157:h7, salmonella enterica serovar typhimurium, staphylococcus aureus, and listeria monocytogenes) and bacillus cereus spores in fermented alcoholic beverages (beer and refined rice wine). | only limited information is available on the microbiological safety of fermented alcoholic beverages because it is still a common belief that such beverages do not provide a favorable environment for bacterial growth and survival. thus, in this study, we examined the survival of major foodborne pathogens and spores in fermented alcoholic beverages. foodborne pathogens (bacillus cereus, escherichia coli o157:h7, listeria monocytogenes, salmonella enterica serovar typhimurium, and staphylococcus a ... | 2014 | 24674433 |
| antimicrobial activity of acid-hydrolyzed citrus unshiu peel extract in milk. | citrus fruit (citrus unshiu) peels were extracted with hot water and then acid-hydrolyzed using hydrochloric acid. antimicrobial activities of acid-hydrolyzed citrus unshiu peel extract were evaluated against pathogenic bacteria, including bacillus cereus, staphylococcus aureus, and listeria monocytogenes. antilisterial effect was also determined by adding extracts at 1, 2, and 4% to whole, low-fat, and skim milk. the cell numbers of b. cereus, staph. aureus, and l. monocytogenes cultures treate ... | 2014 | 24534507 |
| influence of phenolic compounds of kangra tea [camellia sinensis (l) o kuntze] on bacterial pathogens and indigenous bacterial probiotics of western himalayas. | phenolic compounds of nutraceutical importance viz., catechins (c), (-)-epicatechin (ec), (-)-epigallocatechin (egc), (-)-epigallocatechin-3-gallate (egcg) and (-)-epicatechin-3-gallate (ecg) were estimated in fresh green tea shoots of camellia sinensis (l) o kuntze cultivar. the total polyphenols and total catechins were in the range of 219.90 to 317.81 and 140.83 to 271.39 g/kg, respectively in monthly samples of tea. the values of c, ec, egc, egcg and ecg in tea powders as analyzed through hi ... | 2013 | 24516437 |
| antimicrobial and physical-mechanical properties of agar-based films incorporated with grapefruit seed extract. | the use of synthetic petroleum based packaging films caused serious environmental problems due to their difficulty in recycling and poor biodegradability. therefore, present study was aimed to develop natural biopolymer-based antimicrobial packaging films as an alternative for the synthetic packaging films. as a natural antimicrobial agent, grapefruit seed extract (gse) has been incorporated into agar to prepare antimicrobial packaging film. the films with different concentrations of gse were pr ... | 2014 | 24507339 |
| food-borne pathogens of animal origin-diagnosis, prevention, control and their zoonotic significance: a review. | the term food borne diseases or food-borne illnesses or more commonly food poisoning are used to denote gastrointestinal complications that occur following recent consumption of a particular food or drink. millions of people suffer worldwide every year and the situation is quiet grave in developing nations creating social and economic strain. the food borne pathogens include various bacteria viz., salmonella, campylobacter, escherichia coli, listeria monocytogenes, yersinia enterocolitica, staph ... | 2013 | 24506006 |
| efficacy of commercial natural antimicrobials alone and in combinations against pathogenic and spoilage microorganisms. | microbial control strategies are needed in the food industry to prevent foodborne illnesses and outbreaks and prolong product shelf life. the aim of this study was to investigate and compare the efficacy of the commercial natural antimicrobials white mustard essential oil (wmeo), citrus flavonoid and acid blend (cfab), olive extract (oe), nisaplin (a compound containing nisin), and lauric arginate (lae) alone and in combinations against foodborne pathogens and spoilage microorganisms. mics of in ... | 2014 | 24490921 |
| antimicrobial activity of traditional medicinal plants from ankober district, north shewa zone, amhara region, ethiopia. | traditional medicinal plants have long been used in ethiopia to treat human and livestock ailments. despite a well-documented rich tradition of medicinal plant use in the country, their direct antimicrobial effects are still poorly known. | 2014 | 24392738 |
| antibacterial activity of different natural honeys from transylvania, romania. | honey is used in food industry and medicine due to its nutritive, therapeutic and dietetic qualities. the microbiological characteristics of 10 unpasteurized honey samples of known origin, collected from transylvania beekeepers (romania) were determined. the antibacterial activity of these types of honey against escherichia coli, staphylococcus aureus, staphylococcus epidermidis, salmonella enteritidis, salmonella anatum, salmonella choleraesuis, bacillus cereus, bacillus subtilis subsp. spizize ... | 2014 | 24380618 |
| in-vitro anticancer and antimicrobial activities of plga/silver nanofiber composites prepared by electrospinning. | in the present work, a series of 0, 1 and 7 wt% silver nano-particles (ag nps) incorporated poly lactic-co-glycolic acid (plga) nano-fibers were synthesized by the electrospinning process. the plga/ag nano-fibers sheets were characterized using sem, tem and dsc analyses. the three synthesized plga/silver nano-fiber composites were screened for anticancer activity against liver cancer cell line using mtt and ldh assays. the anticancer activity of plga nano-fibers showed a remarkable improvement d ... | 2014 | 24375170 |
| simultaneous detection of listeria monocytogenes, escherichia coli o157:h7, bacillus cereus, salmonella spp., and staphylococcus aureus in low-fatted milk by multiplex pcr. | a rapid and specific pcr assay for the simultaneous detection of listeria monocytogenes, escherichia coli o157:h7, bacillus cereus, salmonella spp., and staphylococcus aureus in foods was developed to reduce the detection time and to increase sensitivity. multiplex pcr developed in this study produced only acta, flic, hbl, inva, iles amplicons, but did not produce any non-specific amplicon. the primer sets successfully amplified the target genes in the multiplex pcr without any non-specific or a ... | 2014 | 26761507 |
| an alkenylresorcinol derivative from hakea sericea fruits and their antimicrobial activity. | hakea sericea has been introduced to portugal for ornamental purposes. the phytochemical composition and the antioxidant, antibacterial, antibiofilm and cytotoxic properties of this shrub species have been previously reported. the present work describes the bioassay-guided fractionation of the crude methanolic extract of h. sericea fruits and the isolation of 9-(3,5-dihydroxy-4-methylphenyl)nona-3(z)-enoic acid. the structure of this new compound was established by one- and two-dimensional nmr a ... | 2013 | 24354201 |
| novel antibacterial activity of lactococcus lactis subspecies lactis z11 isolated from zabady. | the purpose of this study was to select and characterize a probiotic bacterium with distinctive antimicrobial activities. in this respect, lactococcus lactis subspecies lactis z11 (l. lactis z11) isolated from zabady (arabian yoghurt) inhibited other strains of lactic acid bacteria and some food-born pathogens including listeria monocytogenes, bacillus cereus and staphylococcus aureus. the inhibitory activity of cell free supernatant (cfs) of l. lactis z11 isolated from zabady was lost by proteo ... | 2013 | 24151453 |
| nisin-activated hydrophobic and hydrophilic surfaces: assessment of peptide adsorption and antibacterial activity against some food pathogens. | an effective antimicrobial packaging or food contact surface should be able to kill or inhibit micro-organisms that cause food-borne illnesses. setting up such systems, by nisin adsorption on hydrophilic and hydrophobic surfaces, is still a matter of debate. for this purpose, nisin was adsorbed on two types of low-density polyethylene: the hydrophobic native film and the hydrophilic acrylic acid-treated surface. the antibacterial activity was compared for those two films and it was highly depend ... | 2013 | 24092009 |
| chemical composition and bioactivity of essential oils of hypericum helianthemoides, hypericum perforatum and hypericum scabrum. | a number hypericum species are well known for their therapeutic efficacy and use in traditional medicine. the various species of hypericum have been traditionally used for the treatment of wounds, eczema, burns, trauma, rheumatism, neuralgia, gastroenteritis, ulcers, hysteria, bedwetting and depression. | 2014 | 24073965 |
| synthesis and characterization of novel organocobaloximes as potential catecholase and antimicrobial activity agents. | an asymmetric, potentially bidentate dioxime ligand (h₂l) was formed by condensation of 4-biphenylchloroglyoxime and napthyl-1-amine. two equivalents of h₂l were reacted with cocl₂ · 6h₂o under appropriate conditions with deprotonation of the dioxime ligand. a series of new organocobaloxime derivatives of the type [cor(hl)₂py], [corl₂pyb₂f₄], and [corl₂py(cu(phen))₂] (h₂l = 4-(napthyl-1-amino)biphenylglyoxime; phen = 1,10-phenathroline; r = izopropyl and benzyl; py = pyridine) were synthesized. ... | 2013 | 24003018 |
| bacterial contamination of iranian paper currency. | transmission of human pathogens can be occurred via inert objects. paper currency is a further common contact surface whereby pathogens can be transferred within a population although the significance remains unknown. hence, the aim of the present study was to investigate microbial populations associated with iranian paper currency. | 2013 | 26060669 |
| antimicrobial activity of amazon astrocaryum aculeatum extracts and its association to oxidative metabolism. | several compounds present in fruits as polyphenols are able to kill or inhibit the growth of microorganisms. these proprieties are relevant mainly in tropical areas, as amazonian region where infectious are highly prevalent. therefore, this study investigated the antimicrobial activity of tucumã amazonian fruit against 37 microorganisms. the potential role of oxidative metabolism imbalance was also studied as causal mechanism of antimicrobial activity. the results showed antibacterial effect of ... | 2014 | 23870852 |
| characterization and application of enterocin rm6, a bacteriocin from enterococcus faecalis. | use of bacteriocins in food preservation has received great attention in recent years. the goal of this study is to characterize enterocin rm6 from enterococcus faecalis osy-rm6 and investigate its efficacy against listeria monocytogenes in cottage cheese. enterocin rm6 was purified from e. faecalis culture supernatant using ion exchange column, multiple c18-silica cartridges, followed by reverse-phase high-performance liquid chromatography. the molecular weight of enterocin rm6 is 7145.0823 as ... | 2013 | 23844357 |
| evolutionary dynamics of the accessory genome of listeria monocytogenes. | listeria monocytogenes, a foodborne bacterial pathogen, is comprised of four phylogenetic lineages that vary with regard to their serotypes and distribution among sources. in order to characterize lineage-specific genomic diversity within l. monocytogenes, we sequenced the genomes of eight strains from several lineages and serotypes, and characterized the accessory genome, which was hypothesized to contribute to phenotypic differences across lineages. the eight l. monocytogenes genomes sequenced ... | 2013 | 23825666 |
| [isolation and purification of recombinant human lactoferrin (rhlf) from transgenic rice and its antibacterial activities]. | to study the isolation and purification of recombinant human lactoferrin (rhlf) from transgenic rice, and to check its antibacterial activities. | 2013 | 23805514 |
| microbiological quality of chicken- and pork-based street-vended foods from taichung, taiwan, and laguna, philippines. | the microbiological quality of chicken- and pork-based street-food samples from taichung, taiwan's night markets (50) and laguna, philippines' public places (69) was evaluated in comparison to a microbiological guideline for ready-to-eat foods. different bacterial contamination patterns were observed between 'hot-grilled' and 'cold cooked/fried' food types from the two sampling locations with 'hot grilled' foods generally showing better microbiological quality. several samples were found to be u ... | 2013 | 23764220 |
| antibacterial effectiveness of chitosan-propolis coated polypropylene films against foodborne pathogens. | antibacterial properties of chitosan are well documented in the literature. however its antibacterial effectiveness in the film form is controversial due to the methodological differences in test methods used. in this study, antibacterial effectiveness of chitosan-coated polypropylene films alone and incorporating ethanolic extract of propolis (eep) were evaluated against six foodborne pathogens (bacillus cereus, cronobacter sakazakii, escherichia coli o157:h7, listeria monocytogenes, salmonella ... | 2013 | 23707735 |
| potential applications for annona squamosa leaf extract in the treatment and prevention of foodborne bacterial disease. | foodborne disease is a major public health problem. the present study examined annona squamosa leaves, which are traditionally used to treat diarrhea and other infections, for their potential to be used in modern food safety or medicine. active constituents were partially purified by ethanol extraction and column chromatography. mics of the extract were 62.5 to 125 microg/ml against bacillus cereus, listeria monocytogenes and staphylococcus aureus, and 250 microg/ml against campylobacter jejuni. ... | 2013 | 23678817 |
| effects of nisin-incorporated films on the microbiological and physicochemical quality of minimally processed mangoes. | the aim of this study is to examine the effects of nisin-incorporated cellulose films on the physicochemical and microbiological qualities of minimally processed mangoes. the use of antimicrobial films did not affect the physicochemical characteristics of mangoes and showed antimicrobial activity against staphylococcus aureus, listeria monocytogenes, alicyclobacillus acidoterrestris and bacillus cereus. the mango slices were inoculated with s. aureus and l. monocytogenes (10(7)cfu/g), and the vi ... | 2013 | 23673058 |
| effect of the temperature of the dipping solution on the antimicrobial effectiveness of various chemical decontaminants against pathogenic and spoilage bacteria on poultry. | the influence of the temperature of the dipping solution on the antimicrobial effectiveness of several chemical poultry decontaminants was assessed. a total of 765 poultry legs were inoculated with gram-positive bacteria (listeria monocytogenes, staphylococcus aureus, bacillus cereus, or brochothrix thermosphacta) or gram-negative bacteria (salmonella enterica serotype enteritidis, escherichia coli, yersinia enterocolitica, or pseudomonas fluorescens). samples were dipped for 15 min in solutions ... | 2013 | 23643125 |
| probing determinants of cyclopiazonic acid sensitivity of bacterial ca2+-atpases. | cyclopiazonic acid (cpa) is a specific and potent inhibitor of the sarcoplasmic reticulum ca(2+)-atpase 1a (serca1a). despite high sequence similarity to serca1a, listeria monocytogenes ca(2+)-atpase 1 (lmca1) is not inhibited by cpa. to test whether a cpa binding site could be created while maintaining the functionality of the atpase we targeted four amino acid positions in lmca1 for mutational studies based on a multiple sequence alignment of serca-like ca(2+)-atpases and structural analysis o ... | 2013 | 23621633 |
| evaluation of the haccp system in a university canteen: microbiological monitoring and internal auditing as verification tools. | food safety is essential in mass catering. in europe, regulation (ec) no. 852/2004 requires food business operators to put in place, implement and maintain permanent procedures based on hazard analysis and critical control point (haccp) principles. each haccp plan is specifically implemented for the processing plant and processing methods and requires a systematic collection of data on the incidence, elimination, prevention, and reduction of risks. in this five-year-study, the effectiveness of t ... | 2013 | 23594937 |
| antibacterial activity-guided purification and identification of a novel c-20 oxygenated ent-kaurane from rabdosia serra (maxim.) hara. | the objective of this work was to conduct an activity-guided isolation of antibacterial compounds from rabdosia serra. the ethanol extracts of r. serra leaf and stem were partitioned sequentially into petroleum ether, ethyl acetate, butanol and water fractions, respectively. the ethanol extract of leaf evidenced broad-spectrum antibacterial activity against gram-positive bacterial, including bacillus subtilis, bacillus cereus, staphylococcus aureus, and listeria monocytogenes. the ethyl acetate ... | 2013 | 23561188 |
| microbial diversity and prevalence of foodborne pathogens in cheap and junk foods consumed by primary schoolchildren. | aerobic plate counts (apc), coliforms, bacillus cereus, escherichia coli and eight foodborne pathogens were tested in 1008 cheap and junk foods, including candies, dried cakes, chewing gum, chocolate, dried and seasoned seafood, ice cream, and sugary foods. apcs were positive for 342 samples (33·9%), and the majority of the counts were 2-3 log cfu g(-1) or ml(-1) (average: 1·10 log cfu g(-1) or ml(-1) ). most samples (97·3%) contained no coliforms (average: 0·07 log cfu g(-1) or ml(-1) ). bacill ... | 2013 | 23551123 |
| microbiological examination of ready-to-eat foods and ready-to-bake frozen pastries from university canteens. | during a 10-year inspection survey (2001-2010), a microbiological study of ready-to-eat (rte) foods and ready-to-bake frozen pastries from 15 canteens of the university campus was undertaken to determine their microbiological quality. the cumulative study revealed that the aerobic colony counts for the rte product groups were as follows: from 10(6) to 10(8) cfu/g for 50% of sandwiches; under the detection limit (<10 cfu/g) for 88.6% of oven baked pastries; <10(5) cfu/g for 86.5% of desserts oven ... | 2013 | 23541200 |
| in vitro assessment of functional properties of lactic acid bacteria isolated from faecal microbiota of healthy dogs for potential use as probiotics. | lactic acid bacteria were isolated and identified in the faeces of chinese crested and yorkshire terrier pups and their probiotic features were investigated in vitro. thirty seven isolates were identified as lactobacillus or enterococcus. out of these isolates, 31 were lactic acid bacteria (lab) and belonged to the species lactobacillus reuteri (16/37; 43.3%), lactobacillus animalis (7/37; 18.9%), lactobacillus acidophilus (3/37; 8.1%), lactobacillus sanfranciscensis (2/37; 5.4%), lactobacillus ... | 2013 | 23538205 |
| antibacterial and anti-inflammatory activities of mycelia of a medicinal mushroom from taiwan, taiwanofungus salmoneus (higher basidiomycetes). | taiwanofungus salmoneus (t.t. chang et w.n. chou) sheng h. wu et al. (shiang-shan-chih), is a medicinal fungus indigenous to taiwan. the mycelium was prepared from submerged culture and its ethanolic and hot-water extracts were used to study its antibacterial and anti-inflammatory activities. gram-positive species (bacillus cereus, listeria monocytogenes, and staphylococcus aureus) and gram-negative species (escherichia coli and salmonella typhimurium) of bacteria were used. in addition to the i ... | 2013 | 23510283 |
| co-production of surfactin and a novel bacteriocin by bacillus subtilis subsp. subtilis h4 isolated from bikalga, an african alkaline hibiscus sabdariffa seed fermented condiment. | bikalga is a hibiscus sabdariffa seed fermented condiment widely consumed in burkina faso and neighboring countries. the fermentation is dominated by bacillus subtilis group species. ten b. subtilis subsp. subtilis (six isolates) and bacillus licheniformis (four isolates) isolated from traditional bikalga were examined for their antimicrobial activity against a panel of 36 indicator organisms including gram-positive and gram-negative bacteria and yeasts. the bacillus spp. isolates showed variabl ... | 2013 | 23466466 |
| airborne microbial composition in a high-throughput poultry slaughtering facility. | a high-throughput chicken slaughtering facility in beijing was systematically investigated for numbers of airborne microorganisms. samples were assessed for counts of aerobic bacteria, staphylococcus aureus, total coliforms, escherichia coli, pseudomonas aeruginosa, listeria monocytogenes, bacillus cereus, and salmonella. during a 4-month period (september to december 2011), samples were collected for 10 min three times daily (preproduction, production, and postproduction). samples were collecte ... | 2013 | 23462077 |
| antimicrobial activity of essential oils from mediterranean aromatic plants against several foodborne and spoilage bacteria. | the antimicrobial activity of essential oils extracted from a variety of aromatic plants, often used in the portuguese gastronomy was studied in vitro by the agar diffusion method. the essential oils of thyme, oregano, rosemary, verbena, basil, peppermint, pennyroyal and mint were tested against gram-positive (listeria monocytogenes, clostridium perfringens, bacillus cereus, staphylococcus aureus, enterococcus faecium, enterococcus faecalis, and staphylococcus epidermidis) and gram-negative stra ... | 2013 | 23444311 |
| pathogenic bacteria in finnish bulk tank milk. | while the quality of raw cow milk in finland is known for its high hygienic standard, with the national average total bacterial count being below 10(4) cfu/ml annually, the prevalence of pathogenic bacteria in finnish raw milk is underreported. the aim of this study was to determine the occurrence of listeria monocytogenes, thermophilic campylobacter spp., salmonella spp., stx-positive escherichia coli (stec), coagulase-positive staphylococci, yersinia spp., and bacillus cereus group in raw cow ... | 2013 | 23373473 |
| antimicrobial and antifungal activities of lactobacillus curvatus strain isolated from homemade azerbaijani cheese. | the aims of this study were to characterize inhibitory activity spectra, some probiotic properties and safety of lactobacillus curvatus a61 for its future application in production of fermented foods. the studied strain was isolated from traditional homemade cheese manufactured in azerbaijan. the cell-free supernatant of culture of lb. curvatus a61 inhibited the growth of tested lab, as well as of listeria monocytogenes and bacillus cereus strains. the strain presented antifungal activity and in ... | 2013 | 23357316 |