Results 41 to 50 of about 155,634 (173)

Metallo-Dielectric Multilayer Structure for Lactose Malabsorption Diagnosis through H2 Breath Test [PDF]

open access: yesarXiv, 2007
A metallo-dielectric multilayer structure is proposed as a novel approach to the analysis of lactose malabsorption. When lactose intolerance occurs, the bacterial overgrowth in the intestine causes an increased spontaneous emission of H2 in the human breath.
arxiv  

Dynamics of glucose-lactose diauxic growth in E. coli [PDF]

open access: yesarXiv, 2007
We present a mathematical model of glucose-lactose diauxic growth in Escherichia coli including both the postive and negative regulation mechanisms of the lactose operon as well as the inducer exclusion. To validate this model, we first calculated the time evolution of beta-galactosidase for only the lactose nutrient and compared the numerical results ...
arxiv  

Cellulase hyper-production by Trichoderma reesei mutant SEU-7 on lactose

open access: yesBiotechnology for Biofuels, 2017
BackgroundThe induction of cellulase production by insoluble carbon source cellulose was a common and efficient strategy, but has some drawbacks, such as difficult fermentation operation, substantial cellulase loss, long fermentation time, and high ...
Chengcheng Li   +7 more
semanticscholar   +1 more source

Lactose in dairy ingredients: Effect on processing and storage stability.

open access: yesJournal of Dairy Science, 2016
Lactose is the main carbohydrate in the milk of most species. It is present in virtually all dry dairy ingredients, with levels ranging from
T. Huppertz, I. Gazi
semanticscholar   +1 more source

The Interrelationships between Lactose Intolerance and the Modern Dairy Industry: Global Perspectives in Evolutional and Historical Backgrounds

open access: yesNutrients, 2015
Humans learned to exploit ruminants as a source of milk about 10,000 years ago. Since then, the use of domesticated ruminants as a source of milk and dairy products has expanded until today when the dairy industry has become one of the largest sectors in
N. Silanikove, G. Leitner, U. Merin
semanticscholar   +1 more source

Effects of glucose on lactose synthesis in mammary epithelial cells from dairy cow

open access: yesBMC Veterinary Research, 2016
BackgroundLactose, as the primary osmotic component in milk, is the major determinant of milk volume. Glucose is the primary precursor of lactose. However, the effect of glucose on lactose synthesis in dairy cow mammary glands and the mechanism governing
Ye Lin   +5 more
semanticscholar   +1 more source

Determination of carbohydrates in infant milk powders by ultra-performance liquid chromatography with evaporative light scattering detector and BEH HILIC column [PDF]

open access: yesarXiv, 2017
The possibility of carbohydrate separation in BEH HILIC (Ethylene Bridged Hybride, Hydrophilic Interaction Liquid Chromatography) column was studied by ultra-performance liquid chromatography (UPLC) with evaporative light scattering detector (ELSD) and mobile phase containing amine compounds as modifiers.
arxiv  

A gel electrophoresis method for quantifying the binding of proteins to specific DNA regions: application to components of the Escherichia coli lactose operon regulatory system

open access: yesNucleic Acids Res., 1981
The use of gel electrophoresis for quantitative studies of DNA-protein interactions is described. This rapid and simple technique involves separation of free DNA from DNA-protein complexes based on differences in their electrophoretic mobilities in ...
M. Garner, A. Revzin
semanticscholar   +1 more source

Determinants of bistability in induction of the Escherichia coli lac operon [PDF]

open access: yesarXiv, 2008
We have developed a mathematical model of regulation of expression of the Escherichia coli lac operon, and have investigated bistability in its steady-state induction behavior in the absence of external glucose. Numerical analysis of equations describing regulation by artificial inducers revealed two natural bistability parameters that can be used to ...
arxiv  

Genetic parameters for lactose and its correlation with other milk production traits and fitness traits in pasture-based production systems.

open access: yesJournal of Dairy Science, 2017
Lactose is a major component of milk (typically around 5% of composition) that is not usually directly considered in national genetic improvement programs of dairy cattle.
M. Haile-Mariam, J. E. Pryce
semanticscholar   +1 more source

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