搜索结果: 76-90 共查到“食品科学技术 growth”相关记录101条 . 查询时间(0.13 秒)
Effect of Storage Temperatures and Ingredients on Growth of Bacillus cereus in Coffee Creamers
Bacillus cereus storage temperature coffee creamers
2008/3/27
Growth of Bacillus cereus ATCC 33018 was evaluated in half and half (10.5% fat), whipping cream (30% fat), and nondairy creamer (7.5% fat). Samples were inoculated with approximately 10 vegetative cel...
Associative Growth of Lactococcus lactis and Leuconostoc mesenteroides Strains in Milk
Leuconostoc mesenteroides Lactococcus lactis mixed-strain culture milk
2008/3/27
The associative growth of a proteinase-positive strain of Lactococcus lactis ssp. lactis CNRZ 1076 and Leuconostoc mesenteroides ssp. mesenteroides UM10 in reconstituted skim milk was studied in detai...
Effect of Bifidogenic Factors on Growth Characteristics of Bifidobacteria in Infant Formulas
bifidobacteria infant milk formula lactulose fructooligosaccharides
2008/3/26
A bifidogenic factor, lactulose or fructooligosaccharides, was added (0.5%) into infant formula based on soy or infant formula with hydrolyzed casein. The infant formulas were then inoculated (2.5 %) ...
Comparison of Associative Growth and Proteolytic Activity of Yogurt Starters in Whole Milk from Camels and Cows
camel milk growth proteolysis yogurt starter cultures
2008/3/25
Growth and proteolytic activities were studied using yogurt starter cultures incubated in pasteurized whole milk from camels and cows at 42°C as single and mixed cultures. In general, the growth of fo...
Survival During Frozen and Subsequent Refrigerated Storage of Lactobacillus acidophilus Cells as Influenced by the Growth Phase
Lactobacillus acidophilus harvest time frozen storage refrigerated storage
2008/3/23
Cells of Lactobacillus acidophilus propagated in peptonized milk nutrient broth maintained at pH 5 were harvested during the late logarithmic (log) phase and at 6 h into the stationary phase of growth...
Autolysis of Dairy Propionibacteria: Growth Studies, Peptidase Activities, and Proline Production
autolysis propionibacteria peptidases proline production
2008/3/22
Growth and autolysis of 28 strains of propionibacteria were studied in sodium lactate broth and in modified media. Autolysis among the strains varied from 10 to 90%. Optical density and intracellular ...
Extraction from Cheese Whey by Cation-Exchange Chromatography of Factors that Stimulate the Growth of Mammalian Cells
Whey cell growth lactoperoxidase cation-exchange choromatography
2008/3/22
Bovine cheese whey was investigated as a source of growth-stimulating factors that might replace or supplement fetal bovine serum in cell culture. Although some cell growth activity was demonstrated i...
Determination of Growth Parameters of Lactococci in Milk and Ultrafiltered Milk
growth parameters lactococci ultrafiltered milk
2008/3/22
Fresh skim milk and a highly standardized skim milk powder (Nilac) were ultrafiltrated at 50°C to concentration factors of approximately 2,2.5, 3.5, and 4.5, based on total protein. Growth characteris...
Comparisons of Freshly Isolated Strains of Lactobacillus acidophilus, of Human Intestinal Origin for Ability to Assimilate, Cholesterol During Growth
Lactobacillus acidophilus cholesterol assimilation human intestine bile tolerance
2008/3/22
Fecal isolates of Lactobacillus acidophilus were obtained from human volunteers and tested for bile tolerance, the ability to deconjugate bile salts, and the ability to assimilate (take up) cholestero...
Growth and Viability of Bifidobacterium bifidum in Cheddar Cheese
bifidobacteria Cheddar cheese ripening
2008/3/22
Bifidobacterium bifidum (ATCC 15696) was grown in MRS broth containing cysteinea·HCl at 37°12, and the cells were harvested by centrifuging at 1300 x g for 15 min at 4°C. Equal volumes of the cell slu...
Quaternary Ammonium Compounds in Milk: Detection by Reverse-Phase High Performance Liquid Chromatography and Their Effect on Starter Growth
quaternary ammonium sanitizers starter activity high performance liquid chromatography determination
2008/3/22
A reverse-phase HPLC method is described that permits detection of quaternary ammonium sanitizers in milk. The commercial mixture of quaternary ammonium sanitizer used, n-alkyl (50% C14, 40% C12, and ...
Effect of Polyphosphate and Sodium Chloride on the Growth of Listeria monocytogenes and Staphylococcus aureus in Ultra-High Temperature Milk
sodium hexametaphosphate ultra-high temperature milk Listeria monocytogenes Staphylococcus aureus
2008/3/22
With UHT-sterilized milk as a model system, combinations of polyphosphate (.5 and 1.0%) and NaCl (.5 and 4.5%) were studied to determine their effects on the growth kinetics of Listeria monocytogenes ...
Growth Stimulator for Bifidobacteria Produced by Propionibacterium freudenreichii and Several Intestinal Bacteria
bifidogenic growth stimulator Propionibacterium freudenreichii 7025 short-chain fatty acids intestinal bacteria
2008/3/19
A bifidogenic growth stimulator was present in the cell-free filtrate of Propionibacterium freudenreichii 7025 culture and in the methanol extract fraction of the cells. Several intestinal bacteria, s...
Carbon Dioxide Effects on the Growth and Metabolites of Morphological Variants of Streptococcus thermophilus
Streptococcus thermophilus morphological variants carbon dioxide metabolites production
2008/3/19
The effects were studied of agitation and addition of C02 and NaHCO3 on growth of two morphological variants of Streptococcus thermophilus CNRZ 368 that differed in their cell morphology and chain len...
Growth Characteristics of Lactococcal Phages Isolated from the Dairy Sources in India
bacteriophages adsorption burst size
2008/3/18
Host-phage interactions of four lactococcal phages, FRCl, FRC2, FRC3, and FRC4, were studied. Adsorption was maximum at 30°C and pH of 7.2 to 7.6 after 10 min. Optimal growth temperatures of the host ...