Rose hip is one of the natural rich sources and also other important components such as tannins, flavonoids, carotenoids, pectin, Nicotinic acid … Iran is one of the important habitat for Rose and it is used as a food and folk remedy. In this study ascorbic acid in four species of Iranian nature Rose hip were assayed. A hydro alcoholic extract were prepared via maceration method and the assay o...

Rose hip is one of the natural rich sources and also other important components such as tannins, flavonoids, carotenoids, pectin, Nicotinic acid … Iran is one of the important habitat for Rose and it is used as a food and folk remedy. In this study ascorbic acid in four species of Iranian nature Rose hip were assayed. A hydro alcoholic extract were prepared via maceration method and the assay o...

BACKGROUND The accurate and reproducible measurement of ascorbic acid is essential in delineating the role of ascorbic acid as a diagnostic tool for human disease and for the comparison of data acquired by different laboratories. A stabilized pair of standards of ascorbic acid in human serum, which is compatible with most analytical methods, have been prepared. METHODS The certification was b...

BACKGROUND The expression of human milk for later use is on the rise. Bottle systems are used to deliver the expressed milk. Research has shown that storage of both human milk and artificial baby milk, or infant formula, leads to a loss of ascorbic acid (commonly called Vitamin C). As milk is removed from the bottle during feeding and replaced by ambient air, it is unknown if loss of ascorbic a...

Euglena gracilis was found to contain a peroxidase that specifically requires L-ascorbic acid as the natural electron donor in the cytosol. The presence of an oxidation-reduction system metabolizing L-ascorbic acid was demonstrated in Euglena cells. Oxidation of L-ascorbic acid by the peroxidase, and the absence of ascorbic acid oxidase activity, suggests that the system functions to remove H20...

Corresponding Author Email : [email protected] The study evaluated effect of ascorbic acid and citric acid treatments on the functional and sensory properties of yam flour. Yam (Dioscorea rotundata) tubers were washed, peeled and cut into thin slices of 1cm thickness. The slices were divided into 7 portions. The 1st portion served as control. The 2nd, 3rd, 4th and 5th portions were soaked i...

The effect of ascorbic acid on the monophenolase activity of tyrosinase, using tyrosine as substrate, has been studied. Over the ranges of ascorbic acid concentration used, no direct effect on the enzyme is found. However, a shortening of the characteristic induction period of the hydroxylation reaction is observed. The evolution of the reaction is dependent on the concentration of ascorbic aci...

Background: Exposure to ionizing radiation results in genotoxicity and the unrepaired lesions in cellular DNA results in cell cycle arrest, reproductive death, interphase death, division delay, chromosome aberrations, mutations, etc. leading to the intensive destruction of cells and violation of their proliferative capacity there by adversely affecting the mammalian system. Since ionizing radia...

Background: The most devastating manifestations of diabetes mellitus are vascular complications. Although there are many factors involved in the pathogenesis of diabetic vasculopathy, many studies suggest a role for glucose–induced oxidative stress. Studies in animal models, have demonstrated that the administration of antioxidants restores normal endothelial functions. The study was designed t...