Publications

TitleAbstractYear
Filter
PMID
Filter
the effect of heating and fermenting on antioxidant properties of white cabbage.it is widely believed that natural antioxidants found in food are significantly lost during processing. nevertheless, it was recently demonstrated that processed fruits and vegetables may retain their antioxidant activity. in the present work, the changes in the overall antioxidant properties as a consequence of fermentation of cabbage and/or heat treatment of cabbage juices and extracts were studied. fermentation processes as well as heat treatment increased the initial values of antioxidant ac ...200826065745
pressurized solvent extraction and monolithic column-hplc/dad analysis of anthocyanins in red cabbage.the aim of this work was to develop a fast method for extraction and analysis of anthocyanins in red cabbage. pressurized hot water containing 5% of ethanol was used as an extremely efficient extraction solvent. hplc/dad with a monolithic column was used to accomplish a fast analysis-24 anthocyanin peaks within 18min. statistical design was used to optimize the studied extraction parameters: temperature (80-120 degrees c); sample amount (1-3g); extraction time (6-11min); concentration of formic ...200818371772
free radical reactions with the extract of brassica family.using different extraction protocols, the antioxidant properties of green and red cabbage extracts were evaluated in terms of the total antioxidant capacities using the 2,2'-azino-bis(3-ethylbenzo-thiazoline-6-sulphonic acid) (abts) radical scavenging method. the results demonstrate that the total antioxidant capacity of green and red cabbages correlated well with the total phenolics and total flavonoids content present in the extracts. the abts radical scavenging capacity of red cabbage was muc ...201125212348
modeling the pulsed light inactivation of microorganisms naturally occurring on vegetable substrates.pulsed light (pl) is a fast non-thermal method for microbial inactivation. this research studied the kinetics of pl inactivation of microorganisms naturally occurring in some vegetables. iceberg lettuce, white cabbage and julienne-style cut carrots were subjected to increasing pl fluences up to 12j/cm(2) in order to study its effect on aerobic mesophilic bacteria determined by plate count. also, sample temperature increase was determined by infrared thermometry. survivors' curves were adjusted t ...201121645816
enhanced anthocyanin extraction from red cabbage using pulsed electric field processing.this study was conducted to evaluate the effect of pulsed electric field (pef) treatment on anthocyanin extraction from red cabbage using water as a solvent. mashed cabbage was placed in a batch treatment chamber and subjected to pef (2.5 kv/cm electric field strength; 15 micros pulse width and 50 pulses, specific energy 15.63 j/g). extracted anthocyanin concentrations (16 to 889 microg/ml) were determined using hplc. heat and light stabilities of the control and pef-treated samples, having appr ...201020722916
nitrate in leafy vegetables, culinary herbs, and cucumber grown under cover in estonia: content and intake.the content of nitrate in leafy vegetables, culinary herbs, and cucumber was determined during the years 2006-2008. all samples of estonian origin, except white cabbage, were grown under cover. seasonal differences in nitrate concentrations were observed in lettuce and spinach. nitrate concentrations in lettuce were 22% and those in spinach were 24% higher in winter crops compared with samples collected in summer. the mean nitrate level was 3023 mg kg(-1) for fresh lettuce and 2337 mg kg(-1) for ...201024785500
solid sampling-graphite furnace atomic absorption spectrometry for the direct determination of boron in plant tissues.in this work, the potential of graphite furnace atomic absorption spectrometry for the direct determination of b in plant tissues has been investigated. three certified reference materials (nist srm 1570a spinach leaves, nist srm 1573a tomato leaves and bcr crm 679 white cabbage) were selected for this study, the goal always being to develop a fast procedure that could be robust enough to provide a satisfactory performance for all of them, without any modifications in the conditions applied. the ...200717386495
cropping systems and cultural practices determine the rhizoctonia anastomosis groups associated with brassica spp. in vietnam.ninety seven rhizoctonia isolates were collected from different brassica species with typical rhizoctonia symptoms in different provinces of vietnam. the isolates were identified using staining of nuclei and sequencing of the rdna-its barcoding gene. the majority of the isolates were multinucleate r. solani and four isolates were binucleate rhizoctonia belonging to anastomosis groups (ags) ag-a and a new subgroup of a-f that we introduce here as ag-fc on the basis of differences in rdna-its sequ ...201425372406
estimation of scavenging capacity of melatonin and other antioxidants: contribution and evaluation in germinated seeds.seven edible seeds for the levels of melatonin, phenolic compounds and their antioxidant capacity were evaluated during germination process. radical scavenging parameters were also studied in standard antioxidants to understand their antiradical actions. germination brought about significant increases of total phenol compounds in all edible seeds, showing red cabbage, radish and broccoli the highest contents (21.6, 20.4 and 16.4 mg gae/g dw, respectively). the concentration of melatonin is great ...201525306336
the optimisation of traditional fermentation process of white cabbage (in relation to biogenic amines and polyamines content and microbiological profile).white cabbage heads cultivar "futoški" and hybrid "bravo" were investigated during fermentation process, for 50days, at different temperature regimes (16-18; 18-20; 20-22°c) and salt concentrations 1, 1.5 and 2%. the quantity of biogenic amines (tryptamine, phenylethylamine, putrescine, cadaverine, histamine, serotonine, tyramine, spermidine and spermine), as well as microbiological profile (lactic acid bacteria, total number of microorganisms, yeasts and moulds and enterobacteriaceae) have been ...201525172737
changes in the content and composition of anthocyanins in red cabbage and its antioxidant capacity during fermentation, storage and stewing.the effect of fermentation, storage and stewing on the content and composition of anthocyanins as well as antioxidant capacity of red cabbage was studied. the observation of anthocyanins profile by hplc-dad-ms/ms was conducted. red cabbage products contained twenty different nonacylated and acylated anthocyanins with main structure of cyanidin-3-diglucoside-5-glucoside. treatments applied affected concentration and profile of red cabbage anthocyanins. anthocyanins content was reduced by 24%, 25% ...201525148967
comprehensive two-dimensional liquid chromatographic analysis of anthocyanins.anthocyanins are naturally occurring plant pigments whose accurate analysis is hampered by their complexity and unique chromatographic behaviour associated with on-column conversion reactions. this paper reports the evaluation of off-line comprehensive two-dimensional liquid chromatography (lc×lc) for the analysis of anthocyanins. hydrophilic interaction chromatography (hilic) was used in the first dimension in combination with reversed phase liquid chromatography (rp-lc) in the second dimension ...201425113871
domestic cooking methods affect the nutritional quality of red cabbage.the aim of this work is to investigate the effects of domestic cooking methods, including steaming, microwave heating, boiling and stir-frying on the nutritional quality of red cabbage. compared with fresh-cut red cabbage, all cooking methods were found to cause significant reduction in anthocyanin and total glucosinolates contents. moreover, steaming resulted in significantly greater retention of vitamin c and dpph radical-scavenging activity, while stir-frying and boiling, two popular chinese ...201424837935
[cabbage leaf therapy of gonarthrosis. at first i smiled about white cabbage, then i tried it]. 200314649065
why are grape/fresh wine anthocyanins so simple and why is it that red wine color lasts so long?vitis vinifera red berries are characterized by anthocyanins whose chemical structures are among the simplest encountered in higher plants. on the contrary, many plants, including orchids, petunias, red cabbage, elderberries, potatoes for instance, have developed very complicated anthocyanins featuring side-chains at the available positions of the aglycone skeleton. such pigments were shown to possess bio-physico-chemical properties not to be seen with the grape common anthocyanins. among bevera ...200314599515
extraction of anthocyanins from red cabbage using high pressure co2.the extraction kinetics of anthocyanins from red cabbage using high pressure co(2) (hpcd) against conventional acidified water (caw) was investigated. the hpcd time, temperature, pressure and volume ratio of solid-liquid mixture vs. pressurized co(2) (r((s+l)/g)) exhibited important roles on the extraction kinetics of anthocyanins. the extraction kinetics showed two phases, the yield increased with increasing the time in the first phase, the yield defined as steady-state yield (y(*)) was constan ...201020418098
release and characterization of single side chains of white cabbage pectin and their complement-fixing activity.a mixture of single side chains from white cabbage pectin were obtained by anion exchange chromatography after applying mild chemical conditions promoting beta-elimination. these pectin fragments were characterized by their molecular weight distribution, sugar composition, 13c-nmr, and maldi-tof-ms analysis. these analyses revealed that the large oligosaccharides released by beta-eliminative treatment were composed of alpha-1,5 linked arabinosyl residues with 2- and 3-linked alpha-arabinosyl sid ...200919205000
choice and no-choice assays for testing the resistance of a. thaliana to chewing insects.larvae of the small white cabbage butterfly are a pest in agricultural settings. this caterpillar species feeds from plants in the cabbage family, which include many crops such as cabbage, broccoli, brussel sprouts etc. rearing of the insects takes place on cabbage plants in the greenhouse. at least two cages are needed for the rearing of pieris rapae. one for the larvae and the other to contain the adults, the butterflies. in order to investigate the role of plant hormones and toxic plant chemi ...200819066591
lanthanides as substitutes for calcium ions in the activation of plant α-type phospholipase d.most types of phospholipase d (pld) from plants contain a c2 domain and are activated by ca(2+) ions. in this study, other metal ions such as mg(2+), la(3+), ce(3+), tb(3+) and y(3+) were examined as effectors of recombinantly produced α-type pld from white cabbage. all the rare earth ions were able to substitute for ca(2+). the activation curves and displacement experiments reflect a 10- to 50-fold higher affinity of pld for these ions than for ca(2+); however, the maximum activity attained onl ...201424643913
discrimination of conventional and organic white cabbage from a long-term field trial study using untargeted lc-ms-based metabolomics.the influence of organic and conventional farming practices on the content of single nutrients in plants is disputed in the scientific literature. here, large-scale untargeted lc-ms-based metabolomics was used to compare the composition of white cabbage from organic and conventional agriculture, measuring 1,600 compounds. cabbage was sampled in 2 years from one conventional and two organic farming systems in a rigidly controlled long-term field trial in denmark. using orthogonal projection to la ...201424618989
color stability of commercial anthocyanin-based extracts in relation to the phenolic composition. protective effects by intra- and intermolecular copigmentation.anthocyanin extracts are increasingly used as food ingredients. a current challenge is to maintain their color properties. the stability of some colorants has been studied in sugar and non-sugar drink models at three ph values (3, 4, and 5) under thermal and light conditions simulating rapid food aging. at a given ph, color stability mainly depends on the structures of anthocyanins and of colorless phenolic compounds. colorants rich in acylated anthocyanins (purple carrot, red radish, and red ca ...200111170573
effectively simultaneous naked-eye detection of cu(ii), pb(ii), al(iii) and fe(iii) using cyanidin extracted from red cabbage as chelating agent.simultaneous determination of cu(ii), pb(ii), al(iii) and fe(iii) using cyanidin as a chelating agent was investigated in terms of both quantitative and qualitative detections. cyanidin was extracted and purified from red cabbage which is a local plant in thailand. the selectivity of this method was examined by regulating the ph of cyanidin solution operated together with masking agents. it was found that cu(ii), pb(ii), al(iii) and fe(iii) simultaneously responded with the color change at ph 7, ...201424594882
calcium-induced membrane microdomains trigger plant phospholipase d activity.plant alpha-type phospholipase d proteins are calcium-dependent, lipolytic enzymes. the morphology of the aggregates of their phospholipid substrate fundamentally defines the interaction between the enzyme and the surface. here we demonstrate that the ca(2+)-induced generation of membrane microdomains dramatically activates alpha-type phospholipase d from white cabbage. 500-fold stimulation was observed upon incorporation of 10 mol % 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphate (popa) into 1-palm ...200818942690
seasonal development of an invasive exotic species, contarinia nasturtii (diptera: cecidomyiidae), in quebec.the seasonal development of the swede midge contarinia nasturtii kieffer was studied in quebec in 2004 and 2005 using pheromone traps, emergence cages, and visual inspection in relation to degree-day accumulations (dd7.2 degrees c). peak emergence of overwintering adults occurred between 344 and 731 dd7.2 degrees c (second half of june) during both seasons. the swede midge had three to four overlapping generations in quebec based on adult captures in pheromone traps and abundance of larvae in th ...200818801256
characterisation of anthocyanins in red cabbage using high resolution liquid chromatography coupled with photodiode array detection and electrospray ionization-linear ion trap mass spectrometry.the aim of this work was to analyse and tentatively identify anthocyanin species in red cabbage using hplc/dad-esi/qtrap ms. the extraction was realized by using a pressurized liquid technique and the separation of the pigments was achieved by a high resolution liquid chromatography system with a 1.8μm particles c-18 column. photodiode array detection was employed to determine the uv/vis spectral characteristic of the pigments. electrospray ionization-linear ion trap mass spectrometry allowed th ...200826054284
anthocyanins from red cabbage--stability to simulated gastrointestinal digestion.anthocyanins were the main polyphenol components in extracts of fresh and pickled red cabbage. the composition of anthocyanins in red cabbage was studied using liquid chromatography mass-spectrometry. eleven major peaks absorbing at 520 nm were discerned, which represented 18 different anthocyanin structures. another five minor anthocyanin components could be identified by searching at their respective m/z values but only in anthocyanin-enriched concentrates produced by sorption to solid phase e ...200717382979
pectin isolated from white cabbage--structure and complement-fixing activity.this study was done to investigate whether white cabbage contained polysaccharides with immunostimulatory activity using the complement-fixing test as an indicator. the main polysaccharide isolated was of pectin nature. methanolysis and (13)c-nmr showed that the polymers consisted of highly esterified alpha-galactopyranoside (alpha-galpa), significant amounts of alpha-arabinose furanoside (alpha-araf), beta-galp and lesser amounts of rhamnose in the pyranose form (rhap) and xylose in the pyranos ...200616865748
product and redox potential analysis of sauerkraut fermentation.the relationships between the redox potential of the brine, during fermentation of white cabbage into sauerkraut of two early and two late fermentation processes, and the changes in the amount of sugars, organic acids, the redox potential of the brine and of the ascorbic acid redox couple, and ph are described. the trend in the change of the redox potential of the brine is the same for all four fermentation processes studied. in the first phase a sharp decrease in redox potential is followed by ...200010691605
activation of coagulation during alimentary lipemia under real-life conditions.high intake of saturated fat is a predictor of coronary heart disease mortality. the phenomenon of postprandial angina pectoris has been described many years ago. although earlier studies have demonstrated postprandial activation of coagulation factors vii and xii, platelets and monocytes, conclusive evidence for intravascular fibrin formation after a fat-rich meal has not been reported yet. the present study included 33 healthy physicians (7 females, 26 males) with a mean age of 42 years (range ...200716730815
insights into the structure of plant alpha-type phospholipase d.phospholipases d play an important role in the regulation of cellular processes in plants and mammals. moreover, they are an essential tool in the synthesis of phospholipids and phospholipid analogs. knowledge of phospholipase d structures, however, is widely restricted to sequence data. the only known tertiary structure of a microbial phospholipase d cannot be generalized to eukaryotic phospholipases d. in this study, the isoenzyme form of phospholipase d from white cabbage (pldalpha2), which i ...200717451436
high-performance liquid-phase separation of glycosides. iii. determination of total glucosinolates in cabbage and rapeseed by capillary electrophoresis via the enzymatically released glucose.a selective and sensitive method for the determination of total glucosinolates (gss) in plant extracts by capillary electrophoresis-laser-induced fluorescence (lif) detection was developed. it was based on the enzymatically released glucose from glucosinolates in the presence of the hydrolyzing enzyme myrosinase. the released glucose was converted to gluconic acid (ga) by the action of glucose oxidase. the resulting ga was then labeled selectively with the fluorescent tag 7-aminonaphthalene-1, 3 ...19999918659
determination of total content of phenolic compounds and their antioxidant activity in vegetables--evaluation of spectrophotometric methods.this research studies in detail the contents of phenolic compounds determined by the folin-ciocalteu reagent and the antioxidant activities determined by the teac (trolox equivalent antioxidant capacity), dpph (using diphenyl-p-picrylhydrazyl radical), and frap (ferric reducing antioxidant power) methods, and their correlations for used standards with these methods (catechine, gallic acid, caffeic acid, ferulic acid, trolox, ascorbic acid, and ferrous sulfate) and extracts from several species o ...200616448157
identification and characterization of anthocyanins by high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry in common foods in the united states: vegetables, nuts, and grains.anthocyanins in common foods in the united states, other than fruits and berries, were identified and characterized by high-performance liquid chromatography (hplc)-electrospray ionization-tandem mass spectrometry coupled with diode array detection. of all of the 40+ vegetables, nuts, and grains screened, seven vegetables, one nut, and one grain were found to contain anthocyanins; the number of anthocyanins detected varied from two in pistachio nuts to 34 in red radishes. the individual anthocya ...200515826066
different polyphenolic components of soft fruits inhibit alpha-amylase and alpha-glucosidase.polyphenol-rich extracts from soft fruits were tested for their ability to inhibit alpha-amylase and alpha-glucosidase. all extracts tested caused some inhibition of alpha-amylase, but there was a 10-fold difference between the least and most effective extracts. strawberry and raspberry extracts were more effective alpha-amylase inhibitors than blueberry, blackcurrant, or red cabbage. conversely, alpha-glucosidase was more readily inhibited by blueberry and blackcurrant extracts. the extent of i ...200515796622
fruits, vegetables and risk of renal cell carcinoma: a prospective study of swedish women.findings of epidemiologic studies on the relationship between fruit and vegetable consumption and renal cell carcinoma (rcc) risk have been inconclusive. to study the association between fruits and vegetables and risk of rcc in a population-based prospective cohort study of swedish women, we collected dietary information from 61,000 women age 40-76 years by a food-frequency questionnaire. during 13.4 years of follow-up 122 women developed rcc. cox proportional hazards models were used to estimat ...200515455348
leaf color used by cabbage root flies to distinguish among host plants.in experiments in which spectrophotometric reflectance patterns of real leaves were mimicked with mixtures of artists' pigments, leaf color was shown to be a character used by cabbage root flies, before landing on leaves, to discriminate among the host plant cultivars radish, green cabbage, and red cabbage. it may be possible to take advantage of factors that affect leaf color, such as epicuticular bloom, pubescence, and masking of chlorophyll by other pigments, to decrease the attraction of cer ...198317769217
[contributions to chemical study of the raw polysaccharide isolated from the fresh pressed juice of white cabbage leaves].in traditional medicine fresh pressed juice of white cabbage leaves is used in the treatment of many diseases in which immunity disorders are involved: diabetes mellitus, rheumatism, gastric ulcer, cirrhosis, cancer. the efficiency of fresh cabbage juice might be due to an immunomodulatory activity. polysaccharides are hydrosoluble compounds for which there have been pointed out immunomodulatory effects in recent years. this is the reason why a raw polysaccharide was isolated from the fresh pres ...201117438919
antioxidant properties of raw and processed cabbages.to study the effect of polyphenolics on antioxidant activities of cabbages, the amounts of total phenolics, total flavonoids, antioxidant capacity and individual phenolic compounds in raw and processed cabbages were determined. fresh and pickled red cabbages exhibited the highest total phenolic contents (393.1+/-10.8 mg and 366.3+/-3.6 mg gallic acid equivalents/100 g fresh sample, respectively). fresh and pickled red cabbages were also highest in flavonoids (108.1+/-9.3 mg and 72.4+/-4.4 mg cat ...200415223595
the ultrastructure of anthocyanoplasts in red-cabbage.a study of the ultrastructure of anthocyanoplasts from the seedling hypocotyl and leaves from the heart of red-cabbage plants has been made. evidence is presented that the anthocyanoplast does not represent a hydrophobic droplet but is bounded by a single tripartite membrane approximately 10 nm in thickness. the results provide further support for the view that the anthocyanoplast is an intracellular compartment containing at least the later enzymes of anthocyanin biosynthesis, which are thereby ...198224275967
phospholipase d from savoy cabbage: purification and preliminary kinetic characterization.phospholipase d has been purified 680-fold from an acetone powder of savoy cabbage in an overall yield of 30%. the purification involves solubilization of the acetone powder in a ca2+-containing buffer and subsequent ammonium sulfate fractionation. gel filtration on sephadex g-200 and hydrophobic affinity chromatography using a gamma-aminopropane-agarose gel complete the purification. the two chromatographic steps were conducted in buffers containing 50% ethylene glycol, which was necessary in o ...1979518840
the fungal and bacterial flora of stored white cabbage. 1979438106
[cabbage leaf therapy of gonarthrosis. at first i smiled about white cabbage, then i tried it]. 200314974129
proteolytic sensitivity of a recombinant phospholipase d from cabbage: identification of loop regions and conformational changes.a recombinant phospholipase d from white cabbage (pld2) composed of 812 amino acid residues was studied by site-directed mutagenesis and limited proteolysis to obtain first information on its tertiary structure. limited proteolysis by thermolysin resulted in the formation of some large fragments of pld2. from mass spectrometry and n-terminal sequencing of the peptides, the cleavage sites could be identified (1. thr41-ile42, 2. asn323-leu324 or gly287-leu288 and ser319-ile320 in case of the mutan ...200314703982
determination of total folate in plant material by chemical conversion into para-aminobenzoic acid followed by high performance liquid chromatography combined with on-line postcolumn derivatization and fluorescence detection.a procedure involving chemical conversion of all forms of folate present in plant material into para-aminobenzoic acid (paba) and a liquid chromatographic-fluorimetric determination with on-line postcolumn derivatization is reported. all folates are cleaved with liberation of paba by hydrogen peroxide followed by acid hydrolysis using concentrated hydrochloric acid (37%) at 110 degrees c for 6 h. the reaction yield for individual folates conversion to paba ranged from 44.4 to 97.3%. paba could b ...200314690367
[distrubution and metabolism of endrin-(14c) in white cabbage]. 19685684056
the action of cabbage-leaf phospholipase d upon lysolecithin.1. the action of the water-soluble phospholipase d from savoy cabbage leaves upon an aqueous solution of lysolecithin has been studied. 2. optimum conditions required the presence of ca(2+) ions and ph5.8. 3. equivalence was found between the amounts of lysolecithin hydrolysed and free choline released. the reaction was not accompanied by deacylation. 4. as the enzymic degradation proceeded, an opalescence developed, owing to the insolubility of the reaction product in the presence of ca(2+) ion ...19676030285
the chemical nature of the products obtained by the action of cabbage-leaf phospholipase d on lysolecithin: the structure of lysolecithin.1. lysolecithin, prepared by the action of snake-venom phospholipase a on ovolecithin, when incubated with savoy-cabbage phospholipase d, in the presence of ca(2+) ions, gave two degradation products (designated a and b) in the form of their calcium salts. 2. these calcium salts were separated quantitatively by solvent fractionation and converted into the corresponding sodium salts. 3. substance b proved to be a lysophosphatidic acid of conventional structure (1-monoacyl-l-3-glycerophosphoric ac ...19674291559
[on the anthocyanins in red cabbage. ii. on the composition of sinapinic acid ester in rubrobrassin]. 196514287714
[on the anthocyanins in red cabbage. ii. the distribution of glucose molecules in rubrobrassin chloride]. 196514287713
[effect of dehydrated white cabbage juice on peptic ulcer and chronic gastritis]. 196414302226
photocontrol of anthocyanin formation in turnip and red cabbage seedlings. 195716655018
[oxidation ferments in white cabbage]. 200814873418
immune response is energetically costly in white cabbage butterfly pupae.parasite-driven coevolution has led hosts to develop a complicated and potentially costly defence machinery, consisting mainly of the immune system. despite the evidence for the trade-offs between immune function and life-history traits, it is still obscure how the costs of using and maintaining the immune function are paid. we tested whether immune challenge is energetically costly for white cabbage butterfly (pieris brassicae l.) diapausing pupa. individuals challenged with nylon implant raise ...200314667388
[cabbage leaf wrap. white cabbage works better]. 200314655473
potential mechanisms of cancer chemoprevention by anthocyanins.anthocyanins are the chemical components that give the intense color to many fruits and vegetables, such as blueberries, red cabbages and purple sweet potatoes. epidemiological investigations have indicated that the moderate consumption of anthocyanin products such as red wine or bilberry extract is associated with a lower risk of cardiovascular disease and improvement of visual functions. recently, there is increasing interesting in the pharmaceutical function of anthocyanins. this review summa ...200312630561
microphase separation in pr0.67ca0.33mno3 by small-angle neutron scattering.we have evidenced by small-angle neutron scattering at low temperature the coexistence of ferromagnetism (f) and antiferromagnetism (af) in pr0.67ca0.33mno3. the results are compared to those obtained in pr0.80ca0.20mno3 and pr0.63ca0.37mno3, which are f and af, respectively. quantitative analysis shows that the small-angle scattering is not due to a mesoscopic mixing but to a nanoscopic electronic and magnetic "red cabbage" structure, in which the ferromagnetic phase exists in the form of thin ...200212443503
color and antioxidant properties of cyanidin-based anthocyanin pigments.a series of cyanidin-based anthocyanin pigments was investigated to determine the effect of structural variation on a number of chemical and physical properties: cielab color coordinates, visual detection thresholds, hydration constants (pk(h)), and in vitro antioxidant activities (orac). in addition to individual isolated compounds, purified total pigment isolates from blackberry, elderberry, black carrot, red cabbage, and sweet potato were also examined. acylation with cinnamic acids shifted c ...200212358498
evaluation of red cabbage dye as a potential natural color for pharmaceutical use.red cabbage dye is a natural pigment used mainly as a food color. a class of compounds called anthocyanins attributes to this color. the ph of the red cabbage solution can also affect both its color and intensity. the objective of this study was to determine the ionization constant (pk(a)) of red cabbage color, the effect of ph and temperature on its stability in solution and evaluation of this natural color as a ph indicator in pharmaceutical system. spectrophotometric method was used to determ ...200212100856
food poisoning due to methamidophos-contaminated vegetables.organophosphate poisoning is well known for its characteristic symptoms and signs, but food poisoning caused by pesticide-contaminated food is seldom reported.200111527224
host selection, development, survival, and reproduction of turnip aphid (homoptera: aphididae) on green and red cabbage varieties.host selection, development, survival, and reproduction of the turnip aphid, lipaphis erysimi (kaltenbach), on selected green and red cabbage varieties, brassicae oleracea l. variety capitata, were studied in the laboratory. although numbers of alate l. erysimi on different varieties varied generally, more alate adults and nymphs were observed on green than on red varieties on day 3; whereas, these differences were not so significant on day 15. there were no significant differences in alate adul ...200010985047
hydrolytic and transphosphatidylation activities of phospholipase d from savoy cabbage towards lysophosphatidylcholine.the hydrolysis and transphosphatidylation of lysophosphatidylcholine (lpc), with a partially purified preparation of phospholipase d (pl d) from savoy cabbage, was investigated. these reactions were about 20 times slower than the hydrolysis of phosphatidylcholine (pc) in a micellar system. for the transfer reaction, 2 m glycerol was included in the media, which suppressed the hydrolytic reaction. both reactions presented similar v(max) values, suggesting that the formation of the phosphatidyl-en ...200010878234
supercritical fluid chromatography as basis for identification and quantitative determination of indol-3-ylmethyl oligomers and ascorbigens.indol-3-ylmethylglucosinolate (glucobrassicin) occurs in most plants of the brassicaceae family together with hydroxy and methoxy derivatives of glucobrassicin. these compounds and products produced therefrom have been the subject of considerable research interest due to their potential anticarcinogenic effects, and thereby a need for techniques to work with the individual compounds. a method using normal-phase supercritical fluid chromatography (sfc) with methanol as modifier has been developed ...200010869675
compilation of a provisional uk database for the phylloquinone (vitamin k1) content of foods.this paper reports the compilation of a food composition database for phylloquinone (vitamin k1) derived from the direct analysis of foods, recipe calculation and the assignment of values based on food similarities. all the basic and other food items used in these calculations had been analysed by hplc and about 170 of the items had been obtained and assayed in the uk. recipe calculations took account of the cooking method and changes in water and fat content. currently, approximately 1501 food ...200010858697
high-performance liquid phase separation of glycosides. 5. determination of individual glucosinolates in cabbage and rapeseed by laser-induced fluorescene capillary electrophoresis via the enzymatically released isothiocyanate aglycon.a capillary electrophoresis (ce) method was developed for the profiling and determination of individual glucosinolates (gss) via their isothiocyanate degradation products upon myrosinase digestion. the resulting isothiocyanates, the structures of which are reflective of the parent gs's, were then converted to their corresponding amines via base hydrolysis or reaction with 1, 2-benzenedithiol. subsequently, the amines were fluorescently labeled to allow their sensitive detection by laser-induced ...199910552800
[food preferences of 10- to 14-year-old boys and girls].to assess their food preferences a list of 114 foods and 14 beverages was submitted to a sample of 696 boys and 537 girls aged 10 to 14 years. for each item subjects had to rare by means of a five-point facial scale how much they liked or disliked it. items with highest preference ratings were foods like pizza, ice cream, spaghetti, french fries, hamburgers, pudding, corn flakes, potato chips and popcorn, but also included the most common types of fruit. disliked to a high degree were liver, can ...199910081073
[spectrophotometric determination of scandium,gallium and vanadium in white cabbage leaves].scandium, gallium and vanadium contents in plants is on the ppm level, although plants from industrial areas can show higher concentrations of these elements. in department of analytical chemistry of silesian university there have been elaborated new, sensitive, spectrophotometric methods of determination of scandium, gallium and vanadium using chrome azurol s (cas) and sterinol (st). the aim of this study was the application of these methods in analysis of cultivated plants from polluted region ...19979562804
[preparation and characterization of low protein, cell structural material. ii. materials with cellular structure from carrot and white cabbage].the molecular parameters and functional properties of low-protein materials with a cellular structure are determined by both the conditions of preparation and the kind of raw material used. compared to alcohol-insoluble substance, the conditions of preparation were modified. when an alkaline extraction and a favorable combination of processing steps is used, materials with special low protein and high pectin contents result. in addition, such functional properties as water binding capacity and c ...19947975914
structure-activity relationship of isolated avenanthramide alkaloids and synthesized related compounds as oviposition deterrents for pieris brassicae.the structure-activity relationship was investigated of compounds isolated from the eggs of pieris brassicae, the large white cabbage butterfly, and eight synthesized related compounds as oviposition deterrents for this insect. the activity of all compounds was tested in a dual-choice bioassay. the two most active oviposition deterrents for p. brassicae were trans-2- [3-(4-hydroxyphenylpropenoyl)amino]-3,5-dihydroxybenzoic acid [8] and trans-2-[3-(3,4-dihydroxyphenylpropenoyl)amino]-3,5-dihydrox ...19947964796
allene oxide cyclase: a new enzyme in plant lipid metabolism.the mechanism of the biosynthesis of 12-oxo-10,15(z)-phytodienoic acid (12-oxo-pda) from 13(s)-hydroperoxy-9(z),11(e),15(z)-octadecatrienoic acid in preparations of corn (zea mays l.) was studied. in the initial reaction the hydroperoxide was converted into an unstable allene oxide, 12,13(s)-epoxy-9(z),11,15(z)-octadecatrienoic acid, by action of a particle-bound hydroperoxide dehydrase. a new enzyme, allene oxide cyclase, catalyzed subsequent cyclization of allene oxide into 9(s),13(s)-12-oxo-p ...19902306110
[lead and cadmium contamination of foods and feeds from selected areas of the erfurt district. 4. lead in vegetables grown in culture centers of the erfurt region].for the purpose of determining the effect of heavy metal emissions of a great town on the lead and cadmium levels of vegetables that are of relevance to food supply, we analyzed 193 samples of vegetables from the important vegetable-growing centre of erfurt during a 3-year period. with regard to the main wind direction and the infrastructure of the town, the samples were collected at four different areas under vegetable. apart from a single exception, the lead and cadmium contents were inferior ...19836633634
[orienting residue test of post-harvest treated white cabbage heads for benomoyl/carbendazim]. 19827164498
[estrogenic effect of white head cabbage (brassica aleraceae)].an extract obtained from dessicated white cabbage with the help of chloroform and introduced subcutaneously or perorally to sexually immature mice in an equivalent corresponding to 5 g of the dry product for a space of 4--6 days displayed an extrogenic action. long-term storage, souring, cooking of the cabbage result in a somewhat diminished estrogenic activity of the cabbage.20101229113
[value of preserved juice of white cabbage in the complex therapy of peptic ulcer]. 20045492107
[contributions to biological chemistry. xxvi. transformation and residue retention of aldrin-14c and dieldrin-14c in white cabbage, spinach and carrots]. 19705435925
cs(2) blinds in brassica crops: false positive results in the dithiocarbamate residue analysis by the acid digestion method.various members of the brassicaceae family (cauliflower, savoy cabbage, red cabbage, turnip-rooted cabbage) grown without any application of pesticides were analyzed according to the acid digestion method commonly used for the determination of dithiocarbamate fungicide residues. depending on postharvest treatments, high non-anthropogenic cs(2) values up to 4 mg/kg were found in some cases, especially in frozen raw cabbage samples, exceeding maximum residue limits. to explore phytogenic cs(2) occ ...200010725151
separation and purification of anthocyanins by high-speed countercurrent chromatography and screening for antioxidant activity.the all-liquid chromatographic technique of high-speed countercurrent chromatography (hsccc) has been applied for separations of anthocyanins. the biphasic mixture of tert-butyl methyl ether/n-butanol/acetonitrile/water (2:2:1:5) acidified with trifluoroacetic acid was found to be a suitable solvent system for anthocyanin separation. in some cases, enrichment of the pigments on amberlite xad-7 resin prior to hsccc has been carried out. the anthocyanin mixtures from red cabbage, black currant, bl ...200010691638
Displaying items 301 - 376 of 376