It has recently been discovered that chromium is an essential element, particularly in relation to carbohydrate metabolism. Food refinement leads to a loss of chromium as well as of other trace elements. The nutritional significance, particularly in relation to cardiovascular diseases, of the excessive consumption of refined food, poor in trace elements, is not well understood. The first result...

Chromium has been proposed to be an essential trace element useful in the treatment of diabetes, and several chromium(III) compounds have been used as nutritional supplements. However, the fate of the chromium from nutritional supplements has been investigated solely by techniques, such as radio-labeling, which allow only the chromium atom to be traced, not its chemical form. This investigation...

an in vivo experiment was conducted to determine the effect of dietary betaine supplementation (betafin®) as a replacement for methionine on broiler performance and carcass characteristics. in a completely randomized design (crd) with five treatments of betaine levels (at 0, 25, 50, 75, and 100% in replacement for methionine) and five replicates of 10 birds/replicate, two hundred fifty-day-...

L-methioninase degrades methionine, which is essential in methionine-dependent cancer cells, resulting specific cell death. Normal cells can synthesize their own methionine amino acids even the absence of exogenous methionine. This selective targeting makes a promising therapeutic candidate for cancer. In this study, was partially purified from Brevibacterium linens BL2. The activity enzyme fou...

We have studied metallic and oxidized chromium layers on thin ordered alumina films grown on a NiAl~110! substrate using x-ray photoelectron spectroscopy. The interaction between the chromium layers and the substrate has been characterized after deposition at room temperature and after oxidation at 300 and 700 K. Our results indicate partial oxidation of the deposited chromium with the fraction...

Heavy metal, chromium (VI) removal by coagulation using natural coagulant material was investigated in this paper. Chromium occurs naturally in the paint manufacturing industry waste water in many steps of the process. The coagulation and flocculation method is used for chromium removal from waste water using fruits of Opuntia Ficus indica, Fruits of Jatropha gossypifolia and peel of Borassus f...

Chromium has been recognized as an essential nutrient in humans for many years (Mertz, 1992). Though chromium may well be involved in other physiological processes, at present its only known role is as a component of glucose tolerance factor (GTF) which potentiates the action of insulin. Therefore, it is involved in carbohydrate metabolism and other insulin dependent processes such as protein a...

This experiment was conducted to determine the ef®cacy of feeding chromium yeast to growing beef steers. Animal growth, gain ef®ciency, and blood glucose kinetics were determined in 24 beef steers (initial body weightˆ253 4 kg) fed a corn silage-based diet supplemented with 0 (control), 100, 200, or 400 mg chromium from high-chromium yeast/kg of diet dry matter. Intravenous glucose tolerance te...

The determination of chromium(VI) at high concentrations can be performed spectrophotometrically with 1,5-diphenylcarbazite. The standard determination methods for chromium(VI) in leather like DIN53314 or IUC 18 have a detection limit of 3mg/kg leather. However the detection limit is not enough for lower concentrations. There is a need for lower detection limits because public awareness of hexa...

Corrosion is the degradation or deterioration of metal components due to a reaction with the environment. Chromate conversion coating is applied to passivate metallic surface to slow down (and prevent to some extent) corrosion process. Chromate conversion process uses chromium compounds including hexavalent chromium, which is toxic, carcinogenic and hazardous to human health and environment. He...