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Physical and Chemical Properties of Molecular Compounds of Lactose
molecular compounds of lactose calorimetry specific rotation infrared spectroscopy
2008/3/31
The physical and chemical properties of the molecular compounds of lactose 5-/3ß- and 3-/2ß-lactose were studied. The melting point and the heat of combustion were determined. The specific...
Fate of Nitrogen During Metabolism of Whey Lactose by Rahnella aquatilis
peptides amino acids exopolysaccharide microorganism
2008/3/31
The rate of intake of peptides and free amino acids by Rahnella aquatilis was studied, as well as the evolution of concentrations of exopolysaccharide, biomass, and several metabolites. For this purpo...
The Effect of Lactose Derivatives on Intestinal Lactic Acid Bacteria
Lactose derivatives lactic acid bacteria ribotyping fermentation
2008/3/28
Nine strains of lactic acid bacteria were studied for growth and fermentation end products on lactulose, lactitol, and lactobionic acid. In addition, human fecal and biopsy isolates were screened for ...
Kinetics of the Synthesis of Lactose Molecular Compounds
kinetics lactose methanolic medium • molecular compounds
2008/3/28
We studied the molecular compounds 5/3ß-lactose and 3-/2ß-lactose, which are due to the physical and chemical association of the two anomeric forms - and ß-lactose. The kinetic param...
Glass Transition, Water Plasticization, and Lactose Crystallization in Skim Milk Powder
lactose crystallization milk powder glass transition relative humidity
2008/3/28
Effects of water content, storage time, and glass transition (physical state) on lactose crystallization and the resultant crystal forms in skim milk powder were investigated. Samples of freeze-dried ...
Properties of Porcine and Yogurt Lactobacilli in Relation to Lactose Intolerance
lactose intolerance yogurt ß beta -galactosidase lactobacilli
2008/3/28
Lactobacilli that had been isolated from the stomach of piglets were tested for properties relevant to the production of fermented milk products for consumption by lactose-intolerant humans. The strai...
Characterization by Ionization Mass Spectrometry of Lactosyl ß-Lactoglobulin Conjugates Formed During Heat Treatment of Milk and Whey and Identification of One Lactose-Binding Site
mass spectrometry ß beta -lactoglobulin lactose binding site
2008/3/27
The extent of the early stage of the Maillard-type reaction that impaired functional properties of whey proteins was evaluated by electrospray ionization mass spectrometry. Under conditions of mild he...
Differences in the Hydrolysis of Lactose and Other Substrates by ß-D-Galactosidase from Kluyveromyces lactis
ß beta -D-galactosidase metal effects substrate specificity
2008/3/27
The hydrolysis of o-nitrophenyl galactopyranoside and lactose by ß-D-galactosidase from Kluyveromyces lactis was enhanced by the addition of Mg2+ and Mn2+, but the rates of activation by each me...
Improvement of Lactose Digestion by Humans Following Ingestion of Unfermented Acidophilus Milk: Influence of Bile Sensitivity, Lactose Transport, and Acid Tolerance of Lactobacillus acidophilus
lactose digestion Lactobacillus acidophilus unfermented acidophilus milk
2008/3/27
The influence of bile sensitivity, lactose transport, and acid tolerance of Lactobacillus acidophilus on in vivo digestion of lactose was investigated. Four strains of L. acidophilus exhibiting varied...
Evaluation of Lactose Crystalline Forms by Nondestructive Analysis
differential scanning calorimetry hydration lactose crystalline forms X-ray diffraction
2008/3/27
Four methods of quantification of solid lactose using X-ray diffraction were tested. The diffracted peak areas of the two crystalline forms of lactose (-lactose monohydrate and ß-lactose) were c...
Improvement of Lactose Digestion in Humans by Ingestion of Unfermented Milk Containing Bifidobacterium longum
lactose digestion breath hydrogen test Bifidobacterium longum
2008/3/25
Fifteen lactose malabsorbers were studied to evaluate the effects of consumption of milk containing different strains of Bifidobacterium longum on lactose digestion. Influences of different growth sub...
Effect of Milks Inoculated with Lactobacillus acidophilus or a Yogurt Starter Culture in Lactose-Maldigesting Children
Lactobacillus acidophilus yogurt lactose breath hydrogen
2008/3/23
Dairy products containing live bacteria that possess lactase activity are used for dietary management of lactose maldigestion. The efficacy of acidophilus milk and the effect of consuming unfermented ...
Factors Affecting the Ability of a High ß-Galactosidase Yogurt to Enhance Lactose Absorption
yogurt ß beta -galactosidase activity lactose absorption breath hydrogen
2008/3/22
Lactose in yogurt is better absorbed by lactase-deficient subjects than is an equivalent quantity of lactose in milk, presumably because of the microbial activity of the ß-galactosidase present ...
Physical and Microscopic Characterization of Dry Whole Milk with Altered Lactose Content. 2. Effect of Lactose Crystallization
dry whole milk powder • lactose crystallization scanning electron microscopy light-scattering particle sizing
2008/3/22
The purpose of this study was to investigate the effect of lactose crystallization on the structural characteristics of spray-dried whole milk powders with altered lactose concentration. Two methods o...
Physical and Microscopic Characterization of Dry Whole Milk with Altered Lactose Content. 1. Effect of Lactose Concentration
lactose microstructure spray-dried whole milk powder
2008/3/22
The microstructures of spray-dried whole milk powders with 0, 27, 38, 48, 58, and 67% lactose were evaluated. Delactosed milk concentrates were prepared by ultrafiltration and diafiltration, and the l...