l-ascorbic acid


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ascorbic acid, l-ascorbic acid

vitamin c, called also cevitamic acid; a substance found in many fruits and vegetables, especially citrus fruits, such as oranges and lemons, and tomatoes. It is synthesized by most animal species, except primates, guinea pigs, fruit bats and some birds and fish, and so is not a dietary requirement in ordinary circumstances except for the species named.

ascorbic acid nutritional deficiency
occurs in primates and guinea pigs with inadequate dietary intake; affected animals are weak, depressed, anorectic, and have enlarged joints. In farm animals the only example of a possible secondary deficiency is a dermatosis of young calves which occurs at a time at which ascorbic acid levels might be expected to be at their lowest. The syndrome includes heavy dandruff, alopecia and a waxy crust on the skin.
References in periodicals archive ?
Vitamin C in its primary form of L-ascorbic acid has a proven track record for improving aging skin.
Therefore, present work was undertaken to produce stable L-dopa from synthetic L-tyrosine specifically with particular reference to the productive effects of L-ascorbic acid on the microbiological transformation.
Ideal for face application as it has 20% L-ascorbic acid.
At the concentrations designated in this study, the extract had over 90% hydrogen peroxide-hydrolysis activity, which was similar to that of BHT or L-ascorbic acid.
Development of an amperometric L-ascorbic acid (Vitamin C) sensor based on electropolymerised aniline for pharmaceutical and food analysis.
Some of the human clinical trials have shown similar favorable results when applying a daily dose of L-ascorbic acid treatment, but all of these studies involved small sample sizes.
Several factors such as age, exposure to environmental situations, stress, dietary and biochemical changes produce alteration of L-ascorbic acid levels in body fluids (Cheng 1990, Kolb 1992).
So, scientists at North Carolina A&T State University wanted to determine the ability of L-ascorbic acid and propyl gallate, alone or in combination with lactic acid, to inhibit the growth of E.
PAN indicator: is a mixture of sulfuric acid solution, ammonium sulfate, 1,10-phenanthroline solution (20%), L-ascorbic acid solution (2%) and acetic-sodium acetate buffer (pH [approximately equal to] 4.
One of our studies revealed that, L-ascorbic acid administration simultaneously with nickel sulphate improves nickel induced hyperglycaemia by boosting insulin sensitivity in rats and also improve liver glycogen content.
The objective of this study was to examine the effects of L-Ascorbic acid, CH, WPC and GMP, on the growth and viability of probiotic bacteria in fermented milk made with L.