How was Bulk Powders Vitamin D discovered?
Bulk Powders Vitamin D was named Vitamin D in 1922. Although it was discovered earlier. McCollum believes that it is not vitamin A but another substance in cod liver oil that can treat rickets.
Since three vitamins had already been discovered at that time, the fourth vitamin was called vitamin D. It was not initially realized that vitamin D, unlike other vitamins, is synthesized by humans through the exposure of the skin to UV light. It wasn't until 1925 that it was recognized that 7-dehydrocholesterol, when exposed to light, produced a fat-soluble vitamin (now known as vitamin D3).


Items | Standards | Results |
Physical Analysis | ||
Description | White Powder | Complies |
Assay | 99% | 99.26% |
Mesh Size | 100 % pass 80 mesh | Complies |
Ash | ≤ 5.0% | 2.95% |
Chemical Analysis | ||
Heavy Metal | ≤ 10.0 mg/kg | Complies |
Pb | ≤ 2.0 mg/kg | Complies |
As | ≤ 1.0 mg/kg | Complies |
Microbiological Analysis | ||
Residue of Pesticide | Negative | Negative |
Yeast&Mold | ≤ 100cfu/g | Complies |
Why Bulk Powders Vitamin D is a hormone?
Haussler and Norman in 1969 while studying the nuclear fragmentation of intestinal epithelial cells. A protein that specifically binds to vitamin D was discovered. This led to the discovery of the vitamin D receptor. The active metabolic form of vitamin D was discovered in 1971-1972. The researchers converted vitamin D to 25OHD in the liver, which in turn was converted to the active form 1,25(OH)2D by the kidneys. Since then, researchers have discovered that 1,25( OH) 2D is the biologically active form of the hormone in the blood. It plays an important role in regulating the concentration of calcium and phosphorus in the blood and promoting bone health.
Progress in the field of bulk vitamin d has been rapid in the past 20 years. Recognize that vitamin D is a prohormone. 25OHD is the main storage form of vitamin D in the body. Not only the kidneys but many organs and tissues of the human body. It contains its specific hydroxylase CYP27B1 in cells of the skin, breast, prostate, and gastrointestinal tract. These tissues use 25OHD as a substrate and are activated intracellularly to 1,25(OH) 2D. It can significantly promote the maturation and differentiation of normal cells, and inhibit the excessive proliferation of normal cells.
What are the main functions of Bulk Powders Vitamin D?
Regulate calcium and phosphorus metabolism
Regulate calcium and phosphorus metabolism, promote intestinal calcium and phosphorus absorption and bone calcification, and maintain the balance of blood calcium and blood phosphorus.
promote bone growth
Biological doses of 1,25-dihydroxyvitamin D3 can increase the activity of osteoblasts and increase the number of osteoblasts.
Regulate cell growth and differentiation
1,25-Dihydroxyvitamin D3 can regulate the growth and differentiation of leukemia cells, tumor cells, and skin cells.
regulate immune function
vitamin d bulk has immunomodulatory effects and is a good selective immunomodulator.
Where to buy Bulk Powders Vitamin D?
Yansheng International Group Ltd. is a professional vitamin D manufacturer. We have more than 16 years of manufacturing experience. To provide you with high quality vitamin products. Please purchase vitamin D directly through this page or medical@ysgcn.com
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