منابع مشابه
Water Soluble Vitamins - Vitamin C & Vitamin B Complex in Dogs
According to Stedman's Medical Dictionary, a vitamin is 'one of a group of organic substances, present in minute amounts in natural foodstuffs, that are essential to normal metabolism.' As defined, vitamins are present in very small quantities in most foods and it is this fact that leads to the manufacture of vitamin supplements for dogs, cats, and people. Not only are vitamins naturally presen...
متن کاملVitamins and Vitamin-like Compounds: Microbial Production
Glossary BCC Business Communications Company Inc., a leading US information resource producing detailed market research reports, newsletters, and conferences. FDA Food and Drug Administration, an agency of the United States Department of Health and Human Services responsible for regulating inter alia food and dietary supplements. oleoresin A coloring or flavoring plant extract obtained by solve...
متن کاملVitamins and Minerals: The Forgotten Vitamin E
When most people think of vitamin E, more often than not they think of tocopherols—the most prominent being alpha-tocopherol. However, vitamin E refers to a family of eight distinct compounds: four tocopherols and four tocotrienols. While most people are familiar with alpha-tocopherol, other tocopherol forms include beta-, gamma-, and delta-. Similarly, the vitamin E family includes alpha-, bet...
متن کاملVitamins as Hormones
Vitamins A and D are the fi rst group of substances that have been reported to exhibit properties of skin hormones, such as organized metabolism, activation, inactivation, and elimination in specialized cells of the tissue, exertion of biological activity, and release in the circulation. Vitamin A and its two important metabolites, retinaldehyde and retinoic acids, are fat-soluble unsaturated i...
متن کاملVitamin B12: unique metalorganic compounds and the most complex vitamins.
The chemistry and biochemistry of the vitamin B(12) compounds (cobalamins, XCbl) are described, with particular emphasis on their structural aspects and their relationships with properties and function. A brief history of B(12), reveals how much the effort of chemists, biochemists and crystallographers have contributed in the past to understand the basic properties of this very complex vitamin....
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1936
ISSN: 0028-0836,1476-4687
DOI: 10.1038/138027a0