Vitamin B(12), viz., cyano- or hydroxo-cobalamin, can be chemically or enzymatically converted into the derivatives methyl- and adenosyl-cobalamin, which are complex organometallic cofactors associated with several cobalamin-dependent enzymes. The reduced form of vitamin B(12), cob(I)alamin {Cbl(I)}, obtained by reduction of hydroxocobalamin (OH-Cbl) with e.g. sodium borohydride, is one of the ...

The shift in balance between oxidant/antioxidant in favor of oxidants is termed oxidative stress. Physical exercise may increase accumulation of free radicals and induce oxidative stress. The aim of this study was to evaluate effect of 7 day glutamine supplementation on exercise-induced oxidative stress. Nineteen healthy, nonsmoking, young men were recruited to participate in this study. Partic...

Use of natural noncaloric sweeteners in commercial foods and beverages has expanded recently to include compounds from the plant Stevia rebaudiana. Little is known about the responses of rodents, the animal models for many studies of taste systems and food intake, to stevia sweeteners. In the present experiments, preferences of female Sprague-Dawley rats and C57BL/6J mice for different stevia p...

background sugar alcohol erythritol is a non-caloric sweetener, non-cariogenic, and safe for diabetics because of no change to blood glucose and insulin levels after oral administration. erythritol cannot be degraded by any enzymatic systems and must be eliminated from the blood through the kidney. objectives: the aim of this study was production and optimization of erythritol from glucose by y...