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molecular cloning of a putative divalent-cation transporter gene as a new genetic marker for the identification of lactobacillus brevis strains capable of growing in beer.random amplified polymorphic dna (rapd) pcr analysis of lactobacillus brevis isolates from breweries revealed that one of the random primers could distinguish beer-spoilage strains of l. brevis from nonspoilage strains. the 1.1-kb dna fragment amplified from all beer-spoilers included one open reading frame, termed hita (hop-inducible cation transporter), which encodes an integral membrane protein with 11 putative trans-membrane domains and a binding protein-dependent transport signature of a no ...200111414327
new paeonilactone-a adducts formed by anaerobic incubation of paeoniflorin with lactobacillus brevis in the presence of arylthiols.during the course of preparing anticonvulsant paeonimetabolin-i adducts, new paeonilactone-a adducts: 9-phenylthiopaeonilactone-a, 9-(o-tolylthio)paeonilactone-a, 9-(m-tolylthio)paeonilactone-a, 9-(p-tolylthio)-paeonilactone-a and 9-(2-naphthylthio)paeonilactone-a, were obtained along with expected paeonimetabolin-i adducts by anaerobic incubation of paeoniflorin from peony roots with lactobacillus brevis in the presence of the aromatic thiols, phenylthiol, o-tolylthiol, m-tolylthiol, p-tolylthi ...200111456104
hop resistance in the beer spoilage bacterium lactobacillus brevis is mediated by the atp-binding cassette multidrug transporter hora.lactobacillus brevis is a major contaminant of spoiled beer. the organism can grow in beer in spite of the presence of antibacterial hop compounds that give the beer a bitter taste. the hop resistance in l. brevis is, at least in part, dependent on the expression of the hora gene. the deduced amino acid sequence of hora is 53% identical to that of lmra, an atp-binding cassette multidrug transporter in lactococcus lactis. to study the role of hora in hop resistance, hora was functionally expresse ...200111514522
contribution of starter culture to the sensory characteristics of fermented almagro eggplants.trial fermentations were performed using three experimental starter cultures with a view to selecting the most appropriate starter for use in the manufacture of almagro eggplants. the lactic acid bacterial strains used in the starters had previously been isolated from spontaneous fermentations. the combined action of the obligate heterofermentative species lactobacillus brevis and the facultative heterofermentative species l. plantarum yielded almagro eggplants with sensory properties preferred ...200111518429
crystal structure of maltose phosphorylase from lactobacillus brevis: unexpected evolutionary relationship with glucoamylases.maltose phosphorylase (mp) is a dimeric enzyme that catalyzes the conversion of maltose and inorganic phosphate into beta-d-glucose-1-phosphate and glucose without requiring any cofactors, such as pyridoxal phosphate. the enzyme is part of operons that are involved in maltose/malto-oligosaccharide metabolism. maltose phosphorylases have been classified in family 65 of the glycoside hydrolases. no structure is available for any member of this family.200111587643
rapid identification of lactobacillus brevis using the polymerase chain reaction.species-specific pcr was applied to identify lactobacillus brevis and the sensitivity and the specificity of the protocol were determined.200111696100
biocatalytic reduction of beta,delta-diketo esters: a highly stereoselective approach to all four stereoisomers of a chlorinated beta,delta-dihydroxy hexanoate.a stereoselective chemoenzymatic synthesis of all four stereoisomers of tert-butyl 6-chloro-3,5-dihydroxy-hexanoate (6a) is presented. the key step of the sequence is a highly regio- and enantioselective single-site reduction of tert-butyl 6-chloro-3,5-dioxohexanoate (1a) by two enantiocomplementary biocatalysts. alcohol dehydrogenase from lactobacillus brevis (reclbadh) afforded a 72% yield of enantiopure tert-butyl (s)-6-chloro-5-hydroxy-3-oxohexanoate [(s)-2a]. the enantiomer (r)-2a was prepa ...200111757647
evolution of the lactic acid bacterial community during malt whisky fermentation: a polyphasic study.the development of the lactic acid bacterial community in a commercial malt whisky fermentation occurred in three broad phases. initially, bacteria were inhibited by strong yeast growth. fluorescence microscopy and environmental scanning electron microscopy revealed, in this early stage, both cocci and rods that were at least partly derived from the wort and yeast but also stemmed from the distillery plant. denaturing gradient gel electrophoresis (dgge) of partial 16s rrna genes and sequence ana ...200211772639
lactic acid production from wheat straw hemicellulose hydrolysate by lactobacillus pentosus and lactobacillus brevis.lactic acid production by lactobacillus brevis and lactobacillus pentosus on a hemicellulose hydrolysate (hh) of wet-oxidized wheat straw was evaluated. the potential of 11-12 g/l fermentable sugars was released from the hh through either enzymatic or acidic pretreatment. fermentation of added xylose in untreated hh after wet-oxidation, showed no inhibition on the lactic acid production by either lb. pentosus or lb. brevis. lb. pentosus produced lactate corresponding to 88% of the theoretical ma ...200211800488
proteolysis by sourdough lactic acid bacteria: effects on wheat flour protein fractions and gliadin peptides involved in human cereal intolerance.sourdough lactic acid bacteria were preliminarily screened for proteolytic activity by using a digest of albumin and globulin polypeptides as a substrate. based on their hydrolysis profile patterns, lactobacillus alimentarius 15m, lactobacillus brevis 14g, lactobacillus sanfranciscensis 7a, and lactobacillus hilgardii 51b were selected and used in sourdough fermentation. a fractionated method of protein extraction and subsequent two-dimensional electrophoresis were used to estimate proteolysis i ...200211823200
lactic acid bacteria and yeasts in kefir grains and kefir made from them.in an investigation of the changes in the microflora along the pathway: kefir grains (a)-->kefir made from kefir grains (b)-->kefir made from kefir as inoculum (c), the following species of lactic acid bacteria (83-90%) of the microbial count in the grains) were identified: lactococcus lactis subsp. lactis, streptococcus thermophilus, lactobacillus delbrueckii subsp. bulgaricus, lactobacillus helveticus, lactobacillus casei subsp. pseudoplantarum and lactobacillus brevis. yeasts (10-17%) identif ...200211938463
apoptotic effects of selected strains of lactic acid bacteria on a human t leukemia cell line are associated with bacterial arginine deiminase and/or sphingomyelinase activities.the aim of the present work was, first, to analyze the apoptotic effect in vitro of sonicated preparations of selected strains of lactic acid bacteria on normal and tumor human lymphocytes. incubation with bacterial samples led to a relevant time-dependent apoptotic cell death of jurkat cells but not normal human peripheral blood lymphocytes. lactobacillus brevis (cd2) samples were more efficient in inducing apoptosis of jurkat cells than were samples of streptococcus thermophilus (s244). in an ...200111962255
identification by flagellum display of an epithelial cell- and fibronectin-binding function in the slpa surface protein of lactobacillus brevis.depletion of the slpa protein from the bacterial surface greatly reduced the adhesion of lactobacillus brevis atcc 8287 to the human intestinal cell lines caco-2 and intestine 407, the endothelial cell line ea-hy926, and the urinary bladder cell line t24, as well as immobilized fibronectin. for functional analysis of the slpa surface protein, different regions of the slpa gene were expressed as internal in-frame fusions in the variable region of the flic(h7) gene of escherichia coli. the resulti ...200212029053
biochemical characterization of hora-independent hop resistance mechanism in lactobacillus brevis.we isolated a strain from hop-resistant lactobacillus hrevis abbc45, which had lost a plasmid (prh45) harboring a putative hop resistance gene, hora. the hop resistance level of this hora-deficient strain, named abbc45(c), was initially low but gradually induced by repeated growth in media containing progressively increasing levels of hop compounds. although the hop resistance level was substantially lower than that of the hop-adapted wild type strain, hop-adapted abbc45(c) (abbc45(cr)) was stil ...200212051479
purification and partial gene sequence of the tyrosine decarboxylase of lactobacillus brevis ioeb 9809.some lactic acid bacteria contain a tyrosine decarboxylase (tdc) which converts tyrosine to tyramine, a biogenic amine frequently encountered in fermented food and wine. purification and microsequencing of the tdc of lactobacillus brevis ioeb 9809 allowed us to determine a partial sequence of the tdc gene encoding 264 amino acids of the enzyme. analysis of this protein sequence revealed typical features of pyridoxal phosphate-dependent amino acid decarboxylases while not any known decarboxylase ...200212052555
development of a simple hplc method for determination of paeoniflorin-metabolizing activity of intestinal bacteria in rat feces.a simple and reproducible hplc method for the determination of paeoniflorin (pf)-metabolizing activity of intestinal bacteria in rat feces was developed and validated. orally administered pf, a major active constituent of paeoniae radix, is metabolized into a bioactive compound, paeonimetabolin i (pm-i) by intestinal bacteria. direct determination of the pf-metabolizing rate into pm-i is hard to achieve by hplc due to the lack of intense chromophore in pm-i. however, when pf was incubated with l ...200212237542
characterization and selection of vaginal lactobacillus strains for the preparation of vaginal tablets.to characterize and select lactobacillus strains for properties that would make them a good alternative to the use of antibiotics to treat human vaginal infections.200212392537
characterization of trehalose phosphorylase from bacillus stearothermophilus sk-1 and nucleotide sequence of the corresponding gene.a bacterial trehalose phosphorylase (tpase; ec 2.4.1.64) was purified from the culture supernatant of bacillus stearothermophilus sk-1 to apparent homogeneity, and some properties were investigated. furthermore, a gene from sk-1 responsible for the tpase was cloned by southern hybridization with a degenerate oligonucleotide probe synthesized on the basis of the n-terminal sequence of the purified enzyme. the mr of the enzyme was estimated to be 150,000 by gel filtration and 83,000 by sds-page, s ...200212400680
membrane-bound atpase contributes to hop resistance of lactobacillus brevis.the activity of the membrane-bound h+-atpase of the beer spoilage bacterium lactobacillus brevis abbc45 increased upon adaptation to bacteriostatic hop compounds. the atpase activity was optimal around ph 5.6 and increased up to fourfold when l. brevis was exposed to 666 microm hop compounds. the extent of activation depended on the concentration of hop compounds and was maximal at the highest concentration tested. the atpase activity was strongly inhibited by n,n'-dicyclohexylcarbodiimide, a kn ...200212406727
microbiological and fermentation characteristics of togwa, a tanzanian fermented food.selected microbiological and metabolic characteristics of sorghum, maize, millet and maize-sorghum togwa were investigated during natural fermentation for 24 h. the process was predominated by lactic acid bacteria (lab) and yeasts. the mesophiles, lactic acid bacteria, and yeasts increased and the enterobacteriaceae decreased to undetectable levels within 24 h. the isolated microorganisms were tentatively identified as lactobacillus plantarum, lactobacillus brevis, lactobacillus fermentum, lacto ...200312423921
isolation of three new surface layer protein genes (slp) from lactobacillus brevis atcc 14869 and characterization of the change in their expression under aerated and anaerobic conditions.two new surface layer (s-layer) proteins (slpb and slpd) were characterized, and three slp genes (slpb, slpc, and slpd) were isolated, sequenced, and studied for their expression in lactobacillus brevis neotype strain atcc 14869. under different growth conditions, l. brevis strain 14869 was found to form two colony types, smooth (s) and rough (r), and to express the s-layer proteins differently. under aerobic conditions r-colony type cells produced slpb and slpd proteins, whereas under anaerobic ...200212446628
surface display of foreign epitopes on the lactobacillus brevis s-layer.so far, the inability to establish viable lactobacillus surface layer (s-layer) null mutants has hampered the biotechnological applications of lactobacillus s-layers. in this study, we demonstrate the utilization of lactobacillus brevis s-layer subunits (slpa) for the surface display of foreign antigenic epitopes. with an inducible expression system, l. brevis strains producing chimeric s-layers were obtained after testing of four insertion sites in the slpa gene for poliovirus epitope vp1, that ...200212450814
the biodiversity of lactic acid bacteria in greek traditional wheat sourdoughs is reflected in both composition and metabolite formation.lactic acid bacteria (lab) were isolated from greek traditional wheat sourdoughs manufactured without the addition of baker's yeast. application of sodium dodecyl sulfate-polyacrylamide gel electrophoresis of total cell protein, randomly amplified polymorphic dna-pcr, dna-dna hybridization, and 16s ribosomal dna sequence analysis, in combination with physiological traits such as fructose fermentation and mannitol production, allowed us to classify the isolated bacteria into the species lactobaci ...200212450829
arginine catabolism by sourdough lactic acid bacteria: purification and characterization of the arginine deiminase pathway enzymes from lactobacillus sanfranciscensis cb1.the cytoplasmic extracts of 70 strains of the most frequently isolated sourdough lactic acid bacteria were screened initially for arginine deiminase (adi), ornithine transcarbamoylase (otc), and carbamate kinase (ck) activities, which comprise the adi (or arginine dihydrolase) pathway. only obligately heterofermentative strains such as lactobacillus sanfranciscensis cb1; lactobacillus brevis am1, am8, and 10a; lactobacillus hilgardii 51b; and lactobacillus fructivorans dd3 and da106 showed all t ...200212450844
enumeration of bacterial cell numbers by amplified firefly bioluminescence without cultivation.we recently developed a novel bioluminescent enzymatic cycling assay for atp and amp with the concomitant use of firefly luciferase and pyruvate orthophosphate dikinase (ppdk), where amp and pyrophosphate produced from atp by firefly luciferase were converted back into atp by ppdk. background luminescence derived from contaminating atp and amp in the reagent was reduced using adenosine phosphate deaminase which degrades atp, adp, and amp, resulting in constant and highly amplified bioluminescenc ...200312479834
a plasmid prh45 of lactobacillus brevis confers hop resistance. 199812501416
phylogenetic diversity of lactic acid bacteria associated with paddy rice silage as determined by 16s ribosomal dna analysis.a total of 161 low-g+c-content gram-positive bacteria isolated from whole-crop paddy rice silage were classified and subjected to phenotypic and genetic analyses. based on morphological and biochemical characters, these presumptive lactic acid bacterium (lab) isolates were divided into 10 groups that included members of the genera enterococcus, lactobacillus, lactococcus, leuconostoc, pediococcus, and weissella: analysis of the 16s ribosomal dna (rdna) was used to confirm the presence of the pre ...200312514026
acetic acid increases stability of silage under aerobic conditions.the effects of various compounds on the aerobic stability of silages were evaluated. it has been observed that inoculation of whole-crop maize with homofermentative lactic acid bacteria leads to silages which have low stability against aerobic deterioration, while inoculation with heterofermentative lactic acid bacteria, such as lactobacillus brevis or lactobacillus buchneri, increases stability. acetic acid has been proven to be the sole substance responsible for the increased aerobic stability ...200312514042
the crystal structure of r-specific alcohol dehydrogenase from lactobacillus brevis suggests the structural basis of its metal dependency.the crystal structure of the apo-form of an r-specific alcohol dehydrogenase from lactobacillus brevis (lb-radh) was solved and refined to 1.8a resolution. lb-radh is a member of the short-chain dehydrogenase/reductase (sdr) enyzme superfamily. it is a homotetramer with 251 amino acid residues per subunit and uses nadp(h) as co-enzyme. nadph and the substrate acetophenone were modelled into the active site. the enantiospecificity of the enzyme can be explained on the basis of the resulting hypot ...200312628239
isolation, selection, and characterization of lactic acid bacteria for a competitive exclusion product to reduce shedding of escherichia coli o157:h7 in cattle.lactic acid bacteria (lab) were selected on the basis of characteristics indicating that they would be good candidates for a competitive exclusion product (cep) that would inhibit escherichia coli o157:h7 in the intestinal tract of live cattle. fecal samples from cattle that were culture negative for e. coli o157:h7 were collected. lab were isolated from cattle feces by repeated plating on deman rogosa sharpe agar and lactobacillus selection agar. six hundred eighty-six pure colonies were isolat ...200312636285
probiotic and milk technological properties of lactobacillus brevis.two lactobacillus brevis strains atcc 8287 and atcc 14869(t), were evaluated for their applicability as putative probiotics in dairy products. the strains expressed good in vitro adherence to human caco-2 and intestine 407 cells and tolerated well low ph, bile acids and pancreatic fluid under in vitro conditions. in antimicrobial activity assays, strain atcc 8287 showed inhibitory properties toward selected potential harmful microorganisms, particularly against bacillus cereus. both l. brevis st ...200312672593
surface display of the receptor-binding region of the lactobacillus brevis s-layer protein in lactococcus lactis provides nonadhesive lactococci with the ability to adhere to intestinal epithelial cells.lactobacillus brevis is a promising lactic acid bacterium for use as a probiotic dietary adjunct and a vaccine vector. the n-terminal region of the s-layer protein (slpa) of l. brevis atcc 8287 was recently shown to mediate adhesion to various human cell lines in vitro. in this study, a surface display cassette was constructed on the basis of this slpa receptor-binding domain, a proteinase spacer, and an autolysin anchor. the cassette was expressed under control of the nisa promoter in lactococc ...200312676705
evidence for chromosomal determination of fungicidal activity in strains of lactobacillus brevis and lactobacillus fermentum isolated from fermented foods.the genetic basis of the fungicidal activity of strains of lactobacillus brevis and l. fermentum isolated from indigenous fermented foods was determined. a 5.5-kb plasmid was isolated from l. brevis while l. fermentum was found to harbor no plasmid. plasmid curing indicated no correlation between the plasmid and the fungicidal activity of the lactobacillus species. the fungicidal activity of the isolated organisms can be supposed to be mediated by the chromosome. no antibiotic resistance genetic ...200312744077
use of starter cultures of lactic acid bacteria and yeasts in the preparation of togwa, a tanzanian fermented food.starter cultures of lactic acid bacteria (lactobacillus brevis, lactobacillus cellobiosus, lactobacillus fermentum, lactobacillus plantarum and pediococcus pentosaceus) and yeasts (candida pelliculosa, candida tropicalis, issatchenkia orientalis and saccharomyes cerevisiae) isolated from native togwa were tested singly or in combination for their ability to ferment maize-sorghum gruel to produce togwa. all species of bacteria showed an ability to ferment the gruel as judged by lowering the ph fr ...200312745235
proteolytic activities in togwa, a tanzanian fermented food.proteolytic activities were investigated in sorghum-based togwa prepared by natural fermentation and using starter cultures previously isolated from the native product, i.e., lactobacillus brevis, lactobacillus cellobiosus, lactobacillus fermentum, lactobacillus plantarum, pediococcus pentosaceus, and issatchenkia orientalis in coculture with either l. brevis or l. plantarum. both proteinase and aminopeptidase activities were substantially higher in naturally fermented togwa than in those with s ...200312781948
isolation and biochemical characterization of a new nadh oxidase from lactobacillus brevis.a new nadh oxidase, useful for the regeneration of nad+, was isolated and characterized from lactobacillus brevis. in crude extracts the activity was from 10-15 u mg(-1). after purification by four chromatographic steps, an activity of 116 u mg(-1) was obtained with 14% yield. highest activity was from ph 5.5-7 and at 40 degrees c. the enzyme requires dithiothreitol to prevent oxidative deactivation. the km value for nadh was 24 microm.200312882306
the potential of dairy lactic acid bacteria to metabolise amino acids via non-transaminating reactions and endogenous transamination.the metabolism of amino acids by 22 starter and 49 non-starter lactic acid bacteria (lab) was studied in a system consisting of amino acids and non-growing cells without added amino acceptors such as alpha-ketoglutarate. there were significant inter- and intra-species differences in the metabolism of amino acids. some amino acids such as alanine, arginine, aspartate, serine and branched-chain amino acids (leucine, isoleucine and valine) were utilised, whereas other amino acids such as glycine, o ...200312915037
food additive lactic acid production by immobilized cells of lactobacillus brevis on delignified cellulosic material.improvements in yield and productivity in lactic acid fermentation by lactobaccilus brevis cells immobilized on delignified cellulosic (dc) material are reported. the system proved to be more efficient in comparison with the work reported by other workers. yields of 80 and 100% conversion using glucose were obtained at 30 degrees c in 1 day of fermentation time. lactic acid fermentation using whey as substrate was obtained at 30 degrees c in 1-1.5 days, resulting in 70% yield, whereas the remain ...200312926871
pyruvate metabolism in lactobacillus brevis. 195913651158
fructose dissimilation of lactobacillus brevis. 196013820124
fermentation of the yugoslavian pickled cabbage.in yugoslavia, cabbage is preserved by fermentation using a variety of methods. bacteriological study of these fermentations has shown that the relative influence of the various lactic acid producing bacteria varies somewhat with the method of preservation. the heterofermenters, leuconostoc mesenteroides and lactobacillus brevis, exert a greater effect when cabbage is shredded than when the whole heads are packed in salt brine. whole heads of cabbage preserved by fermentation in salt brine are a ...196214484853
cloning, sequence analysis and expression of the f1f0-atpase beta-subunit from wine lactic acid bacteria.the nucleotide sequences of the genes encoding the f1f0-atpase beta-subunit from oenococcus oeni, leuconostoc mesenteroides subsp. mesenteroides, pediococcus damnosus, pediococcus parvulus, lactobacillus brevis and lactobacillus hilgardii were determined. their deduced amino acid sequences showed homology values of 79-98%. data from the alignment and atpase tree indicated that o. oeni and l. mesenteroides subsp. mesenteroides formed a group well-separated from p. damnosus and p. parvulus and fro ...200314529177
16s-ardra, a tool for identification of lactic acid bacteria isolated from grape must and wine.lactic acid bacteria (lab) are found in a great variety of habitats, including grape must and wines. there is a close relationship between the species of lab which develop during fermentation and the eventual quality of the wine. for these reasons analytical techniques allowing fast and reliable identification of wine lab are needed. in this work a simple and accurate protocol for identifying species of lab isolated from grape must and wine is presented. this protocol is based on the amplificati ...200314529184
novel leuconostoc citreum starter culture system for the fermentation of kimchi, a fermented cabbage product.to determine the dominant microorganisms involved in kimchi fermentation and to examine their effect on kimchi fermentation, we randomly isolated and characterized 120 lactic acid bacteria from kimchi during a 5-day fermentation at 15 degrees c. leuconostoc citreum was dominant during the early and mid-phases of kimchi fermentation whereas lactobacillus sake/lactobacillus curvatus or lactobacillus brevis were found during later stages. eighty-two out of 120 isolates (68%) were identified as leuc ...200314574101
antimicrobial interactions of microbial species involved in the fermentation of cassava dough into agbelima with particular reference to the inhibitory effect of lactic acid bacteria on enteric pathogens.lactic acid bacteria, bacillus species and yeasts are involved in the fermentation of cassava dough into agbelima. microbial interactions within and between these groups of microorganisms were investigated in addition to the survival of five enteric pathogens inoculated into agbelima under various conditions. nine out of 10 cultures of lactic acid bacteria isolated at the end of agbelima fermentation showed inhibitory effect against 10 cultures of lactic acid bacteria isolated at the start of fe ...200314580972
construction and use of a computerized dna fingerprint database for lactic acid bacteria from silage.efficient selection of new silage inoculant strains from a collection of over 10,000 isolates of lactic acid bacteria (lab) requires excellent strain discrimination. toward that end, we constructed a gelcompar ii database of dna fingerprint patterns of ethidium bromide-stained ecori fragments of total lab dna separated by conventional agarose gel electrophoresis. we found that the total dna patterns were strain-specific; 56/60 american type culture collection strains of 33 species of lab could b ...200314607400
beer spoilage bacteria and hop resistance.for brewing industry, beer spoilage bacteria have been problematic for centuries. they include some lactic acid bacteria such as lactobacillus brevis, lactobacillus lindneri and pediococcus damnosus, and some gram-negative bacteria such as pectinatus cerevisiiphilus, pectinatus frisingensis and megasphaera cerevisiae. they can spoil beer by turbidity, acidity and the production of unfavorable smell such as diacetyl or hydrogen sulfide. for the microbiological control, many advanced biotechnologi ...200314623377
the tyrosine decarboxylase operon of lactobacillus brevis ioeb 9809: characterization and conservation in tyramine-producing bacteria.bacterial genes of tyrosine decarboxylases were recently identified. here we continued the sequencing of the tyrosine decarboxylase locus of lactobacillus brevis ioeb 9809 and determined a total of 7979 bp. the sequence contained four complete genes encoding a tyrosyl-trna synthetase, the tyrosine decarboxylase, a probable tyrosine permease and a na+/h+ antiporter. rapid amplification of cdna ends (race) was employed to determine the 5'-end of mrnas containing the tyrosine decarboxylase gene. it ...200314659544
lactobacillus casei, dominant species in naturally fermented sicilian green olives.this study investigated the phenotypic and genotypic characteristics of lactic acid bacteria in naturally fermented green olives, collected from different areas of sicily. both classical biochemical tests and pcr/restriction fragments length polymorphism (rflp) of 16s rdna were used to characterize the isolates. the identity of the isolates was obtained by the partial sequencing analysis of the 16s rdna. the biomerieux software assigned the 13 heterofermentative strains to the lactobacillus brev ...200414672826
identification of lactic acid bacteria isolated from south african brandy base wines.in brandy base wines, no sulphur dioxide is used and it therefore is ideal for the proliferation of lactic acid bacteria. as part of an extensive taxonomic survey within the ecological framework of south african vineyards and wineries, and the influence of naturally occurring lactic acid bacteria on the quality of wine and brandy, a total of 54 strains were isolated from grape juice and at different stages of brandy base wine production. the strains were identified using numerical analysis of to ...200414967557
[studies on the biotransformation of escin ia by human intestinal bacteria and the anti-tumor activities of desacylescin i].to study biotransformation of escin ia by the crude enzymes of human intestinal bacteria and lactobacillus brevis, determine the structures of biotransformation products and assay the inhibitory effect of desacylescin i on the tumor cell growth.200414970884
a pcr assay for detection of acetic acid-tolerant lactic acid bacteria in acidic food products.a pcr assay for the detection of acetic acid-tolerant lactic acid bacteria in the genera of lactobacillus and pediococcus was developed in this study. primers targeting the bacterial 16s rrna gene were newly designed and used in this pcr assay. to determine the specificity of the assay, 56 different bacterial strains (of 33 genera), 2 fungi, 3 animals, and 4 plants were tested. results were positive for most tested bacterial members of 16s rrna gene-based phylogenetic groups (classified in the l ...200415035383
characterisation of the microbiota of rice sourdoughs and description of lactobacillus spicheri sp. nov.the microbiota of two industrially processed rice sourdoughs was characterised by bacteriological culture in combination with pcr-denaturing gradient gel electrophoresis (dgge) and 16s/28s rdna sequence analysis. rice sourdough i was continuously propagated for several years by back-slopping every week, whereas sourdough ii was processed by using a commercial starter culture and back-slopping daily for three days. in rice sourdough ii candida krusei and saccharomyces cerevisiae as well as lactob ...200415046303
production of phenyllactic acid by lactic acid bacteria: an approach to the selection of strains contributing to food quality and preservation.the ability of lactic acid bacteria (lab) to produce phenyllactic (pla) and 4-hydroxy-phenyllactic (oh-pla) acids, metabolites involved in food quality and preservation, has been evaluated by hplc analysis in 29 lab strains belonging to 12 species widely used in the production of fermented foods. metabolite production was demonstrated for all strains of the species lactobacillus plantarum, lactobacillus alimentarius, lactobacillus rhamnosus, lactobacillus sanfranciscensis, lactobacillus hilgardi ...200415063498
the influence of lactobacillus brevis on ornithine decarboxylase activity and polyamine profiles in helicobacter pylori-infected gastric mucosa.functional probiotics may prevent helicobacter pylori infection, and some evidence suggests that they also possess antitumor properties. lactobacillus brevis (cd2) is a functional lactobacillus strain with peculiar biochemical features, essentially related to the activity of arginine deiminase. this enzyme catalyzes the catabolism of arginine and affects the biosynthesis of polyamines (putrescine, spermidine, and spermine). polyamines are polycations found in high concentrations in both normal a ...200415068419
genetic characterization of non-spoilage variant isolated from beer-spoilage lactobacillus brevis abbc45.to characterize the non-spoilage variant obtained from beer-spoilage lactobacillus brevis abbc45c and to identify a potential genetic marker capable of discriminating beer-spoilage l. brevis strains from non-spoilers.200415078510
use of an ionic liquid in a two-phase system to improve an alcohol dehydrogenase catalysed reduction.due to favourable partition coefficients the highly enantioselective reduction of 2-octanone, catalysed by an alcohol dehydrogenase from lactobacillus brevis, is faster in a biphasic system containing buffer and the ionic liquid [bmim][(cf(3)so(2))(2)n] compared to the reduction in a biphasic system containing buffer and methyl tert-butyl ether.200415116196
souring and breakdown of cyanogenic glucosides during the processing of cassava into akyeke.the population and composition of the lactic acid bacteria microbiota as well as the content of cyanogenic glucosides occurring at various stages of fermentation and subsequent processing of cassava roots into akyeke, a steamed sour cassava meal, were investigated. the number of lactic acid bacteria and percentage titratable acidity increased during 5 days of fermentation, but decreases were observed in the subsequent operations of 'washing' the dough with water followed by partial drying and st ...200415135588
detection of resistance of lactic acid bacteria to a mixture of the hop analogue compounds tetrahydroiso-alpha-acids by noninvasive measurement of intracellular ph.to examine the resistance of beer isolates of lactic acid bacteria (lab) towards a mixture of tetrahydroiso-alpha-acids (tetra) by growth experiments as well as by measurement of intracellular ph.200415139925
optimization of enzymatic gas-phase reactions by increasing the long-term stability of the catalyst.enzymatic gas-phase reactions are usually performed in continuous reactors, and thus very stable and active catalysts are required to perform such transformations on cost-effective levels. the present work is concerned with the reduction of gaseous acetophenone to enantiomerically pure (r)-1-phenylethanol catalyzed by solid alcohol dehydrogenase from lactobacillus brevis (lbadh), immobilized onto glass beads. initially, the catalyst preparation displayed a half-life of 1 day under reaction condi ...200415176907
synthesis and characterization of bioconjugates of s-layer proteins.the self-assembling proteins that form crystalline surface layers (s-layers) on many microbial species have found numerous applications due to their nanostructured nature. to devise a new method to construct surface displays that exploit s-layer self-assembly activity and nanostructural properties, we have constructed polymer bioconjugates of s-layer proteins. the conjugates formed are similar in function to the monomer alkanethiols that form self-assembled monolayers (sams) on gold surfaces. ho ...200415264854
comparative analysis of conserved genetic markers and adjacent dna regions identified in beer-spoilage lactic acid bacteria.to conduct an inter-species comparative study on the nucleotide sequences of the conserved dna regions surrounding orf5, a genetic marker for differentiating beer-spoilage lactic acid bacteria.200415287868
phytate degradation by lactic acid bacteria and yeasts during the wholemeal dough fermentation: a 31p nmr study.myo-inositol hexaphosphate (ip6) is the main source of phosphorus in cereal grains, and therefore, in bakery products. different microorganisms such as yeasts and lactic acid bacteria have phytase enzymes able to hydrolyze ip6 during the wholemeal breadmaking. in this paper, the phytase activity of lactobacillus plantarum, lactobacillus brevis, lactobacillus curvatus, and saccharomyces cerevisiae strains, isolated from southern italian sourdoughs, is assayed using the (31)p nmr technique. the so ...200415453704
screening of lactic acid bacteria from fermented vegetables by carbohydrate profiling and pcr-elisa.the aim of this study was to identify potential souring agents, isolated from fermented plant material, by api 50 chl assay and a molecular method based on polymerase chain reaction and colorimetric hybridization (pcr-elisa).200415482435
isolation of a lactic acid bacterium and yeast consortium from a fermented material of ulva spp. (chlorophyta).microbiota in a fermented culture of ulva spp. was examined with the objective to characterize the type of fermentation and to obtain starter microbes for performing seaweed fermentation.200415546421
enantioselective reduction of carbonyl compounds by whole-cell biotransformation, combining a formate dehydrogenase and a (r)-specific alcohol dehydrogenase.a whole-cell biotransformation system for the reduction of prochiral carbonyl compounds, such as methyl acetoacetate, to chiral hydroxy acid derivatives [methyl (r)-3-hydroxy butanoate] was developed in escherichia coli by construction of a recombinant oxidation/reduction cycle. alcohol dehydrogenase from lactobacillus brevis catalyzes a highly regioselective and enantioselective reduction of several ketones or keto acid derivatives to chiral alcohols or hydroxy acid esters. the adh gene encodin ...200515549291
[microbiological study of dehydrated garlic (allium sativum l.) and onion (allium cepa l.)].a microbiological study during the process and the storage of garlic (allium sativum l.) and onion (allium cepa l.) dehydrated, with the additional barriers of blanching or brine immersion, was made. in all raw materials the average counts of aerobic mesophilic bacteria expressed in cfu/g ranged from 1.2 x 10(2) to 1.6 x 10(3), molds and yeasts from 60 to 1.6 x 10(3), lactobacillus spp. and leuconostoc mesenteroides subsp. mesenteroides between 10 and 50. microorganisms identified were penicilli ...200415559197
polyphasic study of wine lactobacillus strains: taxonomic implications.one hundred and seventy-eight lactobacilli isolated from wine were characterized by a polyphasic approach. strains were phenotypically identified at genus and species level by classical tests including the analysis of cell morphology, homo/heterofermentative character, sugar fermentation patterns, growth at different temperatures and the optical nature of the isomer of lactic acid produced from glucose. molecular techniques such as random amplification of polymorphic dna (rapd), amplified 16s rd ...200515653876
gene cloning, functional expression and secretion of the s-layer protein sgse from geobacillus stearothermophilus nrs 2004/3a in lactococcus lactis.the ~93-kda surface layer protein sgse of geobacillus stearothermophilus nrs 2004/3a forms a regular crystalline array providing a nanopatterned matrix for the future display of biologically relevant molecules. lactococcus lactis nz9000 was established as a safe expression host for the controlled targeted production of sgse based on the broad host-range plasmid pnz124sph, into which the nisa promoter was introduced. sgse devoid of its signal peptide-encoding sequence was cloned into the new vect ...200515675069
bacterial counts of intestinal lactobacillus species in infants with colic.intestinal colonization by lactobacilli is suggested to be a prerequisite to normal mucosal immune functions. an inadequate level of lactobacilli may be involved in appearance of allergic disease of which, infantile colic, is often considered an early clinical manifestation. the aim of the study is to evaluate intestinal lactobacilli in breast-fed infants with infantile colic and healthy infants. fifty-six breast-fed infants, aged 15-60 days were enrolled in the study and divided into two groups ...200515693915
lactobacillus acidifarinae sp. nov. and lactobacillus zymae sp. nov., from wheat sourdoughs.three heterofermentative lactic acid bacteria, obtained from greek and belgian artisanal wheat sourdoughs, were preliminarily identified as lactobacillus brevis-like after screening using whole-cell protein fingerprinting and 16s rrna gene sequence analysis. the three sourdough isolates showed nearly identical sequences (>99.7 % sequence similarity), and highest similarities of 98.2 and 97.6 % were obtained to the species lactobacillus spicheri and lactobacillus brevis, respectively. growth char ...200515774633
enzyme-catalyzed regio- and enantioselective ketone reductions.in this chapter, examples are given of the application of highly reactive prochiral ketones as substrates for enzymatic reductions. 3,5-dioxocarboxylates are polyketide-like compounds that can be used to synthesize all of the possible stereoisomers of the corresponding 1,3-diols by means of regio- and enantioselective enzymatic reduction. the results obtained from an investigation into the usefulness of the resulting hydroxyl ketones and 1,3-diols in organic synthesis led to the development of n ...200515791940
hepatoprotective effect of lactic acid bacteria, inhibitors of beta-glucuronidase production against intestinal microflora.the hepatoprotective activity of lactic acid bacteria (lactobacillus brevis hy7401, lactobacillus acidophilus csg and bifidobacterium longum hy8001), which inhibited beta-glucuronidase productivity of intestinal microflora, on t-bhp- or ccl4-induced hepatotoxicity of mice were evaluated. these oral administration of lactic acid bacteria lowered beta-glucuronidase production of intestinal microflora as well as escherichia coli hgu-3. when lactic acid bacteria at a dose of 0.5 or 2 g (wet weight)/ ...200515832821
random amplified polymorphic dna-pcr based cloning of markers to identify the beer-spoilage strains of lactobacillus brevis, pediococcus damnosus, lactobacillus collinoides and lactobacillus coryniformis.beer-spoilage ability of lactic acid bacteria such as lactobacillus brevis is a strain-dependent phenomenon in which the mechanism has not yet been completely clarified. in order to systematically identify genes that contribute to beer-spoilage, large-scale random amplified polymorphic dna (rapd)-based cloning methods was carried out.200515836491
rapid identification of dairy lactic acid bacteria by m13-generated, rapd-pcr fingerprint databases.about a thousand lactic acid bacteria (lab) isolated from dairy products, especially cheeses, were identified and typed by species-specific pcr and rapd-pcr, respectively. rapd-pcr profiles, which were obtained by using the m13 sequence as a primer, allowed us to implement a large database of different fingerprints, which were analysed by bionumerics software. cluster analysis of the combined rapd-pcr fingerprinting profiles enabled us to implement a library, which is a collection of library uni ...200515893395
atomic resolution structures of r-specific alcohol dehydrogenase from lactobacillus brevis provide the structural bases of its substrate and cosubstrate specificity.the r-specific alcohol dehydrogenase (radh) from lactobacillus brevis is an nadp-dependent, homotetrameric member of the extended enzyme family of short-chain dehydrogenases/reductases (sdr) with a high biotechnological application potential. its preferred in vitro substrates are prochiral ketones like acetophenone with almost invariably a small methyl group as one substituent and a bulky (often aromatic) moiety as the other. on the basis of an atomic-resolution structure of wild-type radh in co ...200515896805
antibiotic susceptibility of lactobacillus and bifidobacterium species from the human gastrointestinal tract.one hundred and twenty-two strains of bifidobacterium and lactobacillus species have been tested against 12 antibiotics and two antibiotic mixtures by a commercial system (sensititre anaero3; treck diagnostic systems). the upper limits of some minimum inhibitory concentrations (mics) were completed on mrs agar plates by the nccls procedure. all strains were sensitive to chloramphenicol and imipenem and most of the strains were resistant to metronidazole. bifidobacteria isolates were susceptible ...200515902467
production of xylitol from d-xylose by recombinant lactococcus lactis.the d-xylose reductase from pichia stipitis cbs 5773 and the xylose transporter from lactobacillus brevis atcc 8287 were expressed in active form in lactococcus lactis nz9800. xylitol production was investigated using non-growing recombinant cells in high cell-density under microaerobic conditions in the presence of xylose and glucose. besides xylose, the recombinant strain with xylose reductase activity reduced l-arabinose and d-ribose in significant extent to the corresponding pentitols. the r ...200515916828
cloning, expression, purification, and analysis of mannitol dehydrogenase gene mtlk from lactobacillus brevis.the commercial production of mannitol involves high-pressure hydrogenation of fructose using a nickel catalyst, a costly process. mannitol can be produced through fermentation by microorganisms. currently, a few lactobacillus strains are used to develop an efficient process for mannitol bioproduction; most of the strains produce mannitol from fructose with other products. an approach toward improving this process would be to genetically engineer lactobacillus strains to increase fructose-to-mann ...200515917616
characterisation of lab in typical salento pecorino cheese.twenty-nine strains of lactic acid bacteria isolated from the typical pecorino cheese of the salento area of italy, were identified and grouped according to their genetic similarity. a preliminary characterisation of the strains was conducted by means of morphological and biochemical analysis, but molecular approaches were necessary for the clear identification of the species. for the species detection, the amplification and sequencing of the 16s rdna gene was employed in addition, restriction a ...200115954655
characterization of lactobacillus strains and monitoring by rapd-pcr in controlled fermentations of "almagro" eggplants.the characterization of 23 lactobacillus strains was performed. the strains were assayed for biogenic amine-forming capacity, hydrogen peroxide production, pectin esterase, cellulase and polygalacturonase production, growth rate, acidifying capacity and salt tolerance. three strains were selected which belonged to the species, lactobacillus brevis, lactobacillus plantarum and lactobacillus fermentum. different starter cultures prepared as combinations of these three strains were assayed in pilot ...200515979183
performance assessment of malolactic fermenting bacteria oenococcus oeni and lactobacillus brevis in continuous culture.the growth performance of malolactic fermenting bacteria oenococcus oeni ncimb 11648 and lactobacillus brevis x(2) was assessed in continuous culture. o. oeni grew at a dilution rate range of 0.007 to 0.052 h(-1) in a mixture of 5:6 (g l(-1)) of glucose/fructose at an optimal ph of 4.5, and l. brevis x(2) grew at 0.010 to 0.089 h(-1) in 10 g l(-1) glucose at an optimal ph of 5.5 in a simple and safe medium. the cell dry weight, substrate uptake and product formation were monitored, as well as gr ...200616012836
effect of protective agents, freezing temperature, rehydration media on viability of malolactic bacteria subjected to freeze-drying.the effects of protective agents, rehydration media and freezing temperature on the viabilities of lactobacillus brevis and oenococcus oeni h-2 when subjected to freeze-drying were investigated.200516033464
identification of predominant lactic acid bacteria isolated from traditionally fermented vegetable products of the eastern himalayas.gundruk, sinki and khalpi are lactic-fermented vegetable products of sikkim in india, and inziangsang is a fermented leafy vegetable product of nagaland and manipur in india. a total of 65 samples of gundruk (25), sinki (12), khalpi (25) and inziangsang (3) were analysed for microbial counts. the population of lactic acid bacteria (lab) as well as aerobic mesophilic counts were at the level of 10(7) cfu g(-1). yeasts were detected only in few samples of sinki and khalpi. no moulds were detected. ...200516055218
identification of potential probiotic starter cultures for scandinavian-type fermented sausages.potential probiotic cultures suitable as starter cultures for the scandinavian-type fermented sausages were identified among strains well-adapted to fermented meats as well as strains originating from a culture collection. from 15 different fermented meat products, 22 strains were isolated as dominant non-starter lactic acid bacteria (nslab). the isolates were identified by rapd, api and sequence analysis of 16s rrna and showed to be five strains of lactobacillus sakei, five strains of lactobaci ...200516076509
diversity and technological properties of predominant lactic acid bacteria from fermented cassava used for the preparation of gari, a traditional african food.traditional fermentation of cassava is dominated by a lactic acid bacteria (lab) population. fermentation is important for improving product flavour and aroma as well as safety, especially by reduction of its toxic cyanogenic glucosides. the production of gari from cassava in benin typically occurs on a household or small industrial scale, and consequently suffers from inconsistent product quality and may not always be safe for consumption. therefore, the diversity of lab from a typical cassava ...200516104351
lactic acid bacteria and yeasts associated with spontaneous fermentations during the production of sour cassava starch in brazil.sour cassava starch is a traditional fermented food used in the preparation of fried foods and baked goods such as traditional cheese breads in brazil. thirty samples of sour cassava starch were collected from two factories in the state of minas gerais. the samples were examined for the presence of lactic acid bacteria, yeasts, mesophilic microorganisms, bacillus cereus and faecal coliforms. lactic acid bacteria and yeasts isolates were identified by biochemical tests, and the identities were co ...200516153731
biodiversity of lactic acid bacteria in moroccan soft white cheese (jben).the bacterial diversity occurring in traditional moroccan soft white cheese, produced in eight different regions in morocco, was studied. a total of 164 lactic acid bacteria were isolated, purified and identified by whole-cell protein fingerprinting and rep-pcr genomic fingerprinting. the majority of the strains belonged to the genera lactobacillus, lactococcus, leuconostoc and enterococcus. sixteen species were identified: lactobacillus plantarum, lactobacillus rhamnosus, lactobacillus paracase ...200516168579
use of real time pcr to determine population profiles of individual species of lactic acid bacteria in alfalfa silage and stored corn stover.real-time polymerase chain reaction (rt-pcr) was used to quantify seven species of lactic acid bacteria (lab) in alfalfa silage prepared in the presence or absence of four commercial inoculants and in uninoculated corn stover harvested and stored under a variety of field conditions. species-specific pcr primers were designed based on reca gene sequences. commercial inoculants improved the quality of alfalfa silage, but species corresponding to those in the inoculants displayed variations in pers ...200616205920
classification and identification of strains of lactobacillus brevis based on electrophoretic characterization of d-lactate dehydrogenase: relationship between d-lactate dehydrogenase and beer-spoilage ability.the cell-free extracts of 60 strains which were identified phenotypically as being those of lactobacillus brevis, including 48 isolates from the environment and 12 reference strains, were applied to polyacrylamide gel electrophoresis for extracting their nad-dependent d- and l-lactate dehydrogenases (ldh). these strains were divided into 5 groups, i.e., groups a, b, c, d, and e, on the basis of the electrophoretic mobilities of their d-ldh. the strains showed variations in their carbohydrate fer ...199916232652
production of gamma-aminobutyric acid from alcohol distillery lees by lactobacillus brevis ifo-12005.lactobacillus brevis ifo-12005 showed good growth in rice shochu distillery lees (kome shochu kasu). almost all of the free glutamic acid (10.50 mm) in shochu kasu was converted to gamma-amino-butyric acid (gaba) within 2 d of stationary culture at 30 degrees c. the amount of gaba in the kome shochu kasu medium finally reached 10.18 mm. after centrifugation of the broth culture, the supernatant fraction was treated with a flocculation agent to form a clear solution, then passed through a column ...200216233172
cloning and sequencing of kojibiose phosphorylase gene from thermoanaerobacter brockii atcc35047.a gene encoding kojibiose phosphorylase was cloned from thermoanaerobacter brockii atcc35047. the kojp gene encodes a polypeptide of 775 amino acid residues. the deduced amino acid sequence was homologous to those of trehalose phosphorylase from t. brockii and maltose phosphorylases from bacillus sp. and lactobacillus brevis with 35%, 29% and 28% identities, respectively. kojibiose phosphorylase was efficiently overexpressed in escherichia coli jm109. the dna sequence of 3956 bp analyzed in this ...200416233673
optimization of adsorptive immobilization of alcohol dehydrogenases.in this work, a systematic examination of various parameters of adsorptive immobilization of alcohol dehydrogenases (adhs) on solid support is performed and the impact of these parameters on immobilization efficiency is studied. depending on the source of the enzymes, these parameters differently influence the immobilization efficiency, expressed in terms of residual activity and protein loading. residual activity of 79% was achieved with adh from bakers' yeast (yadh) after optimizing the immobi ...200516233799
resistance to antimicrobial agents in lactobacilli isolated from caper fermentations.a collection of lactobacilli comprising species of lactobacillus plantarum (43 isolates), lactobacillus brevis (9 isolates) and lactobacillus fermentum (6 isolates) obtained from spontaneous fermentations of capers (the fruits of capparis spinosa) were investigated for resistance to antimicrobial agents. all isolates were resistant to vancomycin and teicoplanin (mic > 16 microg/ml). resistance to ciprofloxacin (mic > 2 microg/ml) was detected in all isolates of l. brevis and l. fermentum as well ...200516284934
microbiological study of lactic acid fermentation of caper berries by molecular and culture-dependent methods.fermentation of capers (the fruits of capparis sp.) was studied by molecular and culture-independent methods. a lactic acid fermentation occurred following immersion of caper berries in water, resulting in fast acidification and development of the organoleptic properties typical of this fermented food. a collection of 133 isolates obtained at different times of fermentation was reduced to 75 after randomly amplified polymorphic dna (rapd)-pcr analysis. isolates were identified by pcr or 16s rrna ...200516332762
detection, growth, and amine-producing capacity of lactobacilli in cheese.a differential plating medium was developed to detect decarboxylating lactobacilli in cheese. with this medium, 15 cheeses made from raw milk were investigated for the presence of these bacteria. five histidine-decarboxylating strains and one tyrosine-decarboxylating strain were isolated. the isolates were identified with the api 50l system. accordingly, each of the five histidine-decarboxylating strains was identified as lactobacillus buchneri, whereas the tyrosine-decarboxylating strain is a r ...198916348016
isolation and characterization of microorganisms associated with the traditional sorghum fermentation for production of sudanese kisra.sorghum flour obtained from sudan was mixed with water in a 1:2 (wt/vol) ratio and fermented at 30 degrees c for 24 h. the bacterial populations increased with fermentation time and reached a plateau at approximately 18 h. at the end of 24 h, sorghum batter ph had dropped from 5.95 to 3.95 and the batter had a lactic acid content of 0.80%. the microbial population during the 24 h of fermentation consisted of bacteria (pediococcus pentosaceus, lactobacillus confusus, lactobacillus brevis, lactoba ...199116348551
localization and characterization of alpha-glucosidase activity in lactobacillus brevis.lactobacillus brevis is found together with the yeast brettanomyces lambicus during the overattenuation process in spontaneously fermented lambic beer. an isolated l. brevis strain has been shown to produce an alpha-glucosidase with many similarities to the glucosidase earlier found in b. lambicus. the enzyme was purified by ammonium sulfate precipitation, gel (sephadex g-150 and ultrogel aca-44) filtration, and ion-exchange chromatography (deae-sephadex a-50). the molecular weights of the enzym ...199416349368
growth response of lactobacillus brevis to aeration and organic catalysts.under stationary and anaerobic conditions, greater cell yields of lactobacillus brevis were obtained from autoclaved than from filter-sterilized glucose media. fructose, tentatively identified as a product generated by the heating process, served as an excellent catalyst for inducing growth. the addition of micromolar quantities of pentoses or potential pentose precursors to the filter-sterilized medium was equally effective in stimulating growth. these organic catalysts were not essential for g ...196716349721
occurrence of an inhibitor of lactic acid bacteria in green olives.green olives were found to contain an inhibitor(s) of several species of lactic acid bacteria usually associated with the spanish-type brined olive fermentation. the inhibitor was demonstrated by the presence of inhibition zones surrounding tissue which had been cut from frozen olives and implanted in a seeded nutritive agar medium. relative potencies of aqueous extracts of frozen olives were determined by a paper disc assay method. the mission variety of olive contained the most inhibitor, and ...196716349729
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