Results 221 to 230 of about 24,421 (251)
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Lactase activity of microorganisms
Folia Microbiologica, 1978Sixty-two strains of yeasts, molds and bacteria were screened for lactase (beta-D-galactosidase) activity. Strains exhibiting the enzyme activity were evaluated for cell yield as well as enzyme units available per litre of the medium, per g cell dry weight and per mg protein of their cell-free extracts.
S. M. Dutta, M. V. R. Rao
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Purified lactases versus whole-cell lactases—the winner takes it all
Applied Microbiology and Biotechnology, 2021Lactose-free dairy products are in great demand worldwide due to the high prevalence of lactose intolerance. To make lactose-free dairy products, commercially available β-galactosidase enzymes, also termed lactases, are used to break down lactose to its constituent monosaccharides, glucose and galactose.
Robin Dorau +2 more
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Lactase deficiency in Nigerians
The American Journal of Digestive Diseases, 1971A combination of lactose and glucose-galactose tolerance tests was carried out on 83 patients to determine the prevalence of isolated lactase deficiency in the the various ethnic groups of Nigerians living in Ibadan. Lactase deficiency was found in 81% of all the subjects.
B. Kwaku Adadevoh, D. A. Olatunbosun
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On the Evolution of Lactase Persistence in Humans
Annual Review of Genomics and Human Genetics, 2017Lactase persistence—the ability of adults to digest the lactose in milk—varies widely in frequency across human populations. This trait represents an adaptation to the domestication of dairying animals and the subsequent consumption of their milk. Five variants are currently known to underlie this phenotype, which is monogenic in Eurasia but mostly ...
Ségurel, Laure, Bon, Céline
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New insights into lactase and glycosylceramidase activities of rat lactase-phlorizin hydrolase
American Journal of Physiology-Gastrointestinal and Liver Physiology, 1989Lactase-phlorizin hydrolase, a small intestinal disaccharidase, has been considered mainly an enzyme important only for the hydrolysis of lactose. After weaning in most mammals lactase-specific activity falls markedly, and, functionally, adult mammals are considered to be lactase deficient. However, the persistence of low levels of lactase activity in
A. G. Van Wassenaer +5 more
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The Journal of Pediatrics, 1966
The absence of intestinal lactase activity is manifested by lack of absorption of lactose with consequent diarrhea and malnutrition. Two patients with congenital lactase deficiency are described. The association of other disaccharidase deficiencies is documented during the acute stage of the illness.
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The absence of intestinal lactase activity is manifested by lack of absorption of lactose with consequent diarrhea and malnutrition. Two patients with congenital lactase deficiency are described. The association of other disaccharidase deficiencies is documented during the acute stage of the illness.
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On the inducibility of a pancreatic lactase
Archives of Biochemistry and Biophysics, 1969Abstract Induction of synthesis and secretion of pancreatic lactase by ingestion of lactose was reported by Bayliss and Starling in 1904 and subsequently confirmed by others. Since this appears to have been the earliest report of induced mammalian protein biosynthesis, these experiments were repeated in a variety of ways.
K.V. Rajagopalan +2 more
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Calcium absorption from milk in lactase-deficient and lactase-sufficient adults
Digestive Diseases and Sciences, 1986To determine whether lactose influences the absorption of calcium, the uptake of calcium from lactose-hydrolyzed milk and from unhydrolyzed milk was measured in 20 adults: 10 were lactase-deficient and 10 were lactase-sufficient as defined by breath hydrogen test, plasma glucose determination after oral lactose dose, and presence or absence of symptoms
William J. Tremaine +3 more
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Lactases and their Applications
1981Lactose or milk sugar is a disaccharide found in the milk of mammals. Lactose itself is not sweet, it has a low solubility and it cannot be absorbed directly from the intestine. Lactase splits lactose into glucose and galactose, which have a sweetening power of about 0–8 relative to sucrose; they are 3–4 times more soluble than lactose and are easily ...
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Biotechnology Letters, 1981
A process for production of mold lactase was developed. Tests were carried out in pilot and industrial scale with an Aspergillus niger strain selected after screening a number of molds.
H. Ojamo +3 more
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A process for production of mold lactase was developed. Tests were carried out in pilot and industrial scale with an Aspergillus niger strain selected after screening a number of molds.
H. Ojamo +3 more
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