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vitamin    音標拼音: [v'ɑɪtəmən]
n. 維他命,維生素

維他命,維生素

vitamin
n 1: any of a group of organic substances essential in small
quantities to normal metabolism

Vitamin \Vit"a*min\ (v[imac]t"[.a]*m[i^]n), n.
any of several organic chemical substances not synthesized by
an animal and required in small quantities for normal
metabolism, present in and obtained from the natural foods
eaten by the animal. Human vitamins are also produced
synthetically, and taken in pure form or in mixtures, as
dietary supplements. Deficiencies of specific vitamins lead
to certain specific disorders, such as scurvy, caused by an
insufficiency of vitamin C (ascorbic acid).

Note: Most vitamins act as coenzymes or precursors to
coenzymes, and are not consumed for energy production
or incorporated into structural units of the cell.
[PJC]



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英文字典中文字典相關資料:
  • Vitamins - MedlinePlus
    Vitamins are substances that your body needs to grow and develop normally There are 13 vitamins your body needs; Each has specific jobs
  • Vitamins Supplements - WebMD
    Get all the information you need on vitamins and supplements, from A to Z, with WebMD's comprehensive database Our expert resources cover everything from health benefits to potential side
  • List of Vitamins - Drugs. com
    Vitamins are substances that are required in very small amounts, for healthy growth and development They occur naturally in certain foods but are not synthesized by humans and therefore it is essential to include it in the diet Vitamins are either water soluble or fat soluble
  • Vitamins and Minerals - The Nutrition Source
    Vitamins are organic substances that are generally classified as either fat soluble or water soluble Fat-soluble vitamins (vitamin A, vitamin D, vitamin E, and vitamin K) dissolve in fat and tend to accumulate in the body
  • Vitamins and Minerals From A to Z - WebMD
    Eat crimini mushrooms, peanuts, and peanut butter This vitamin plays a role in more than 100 different reactions in your body Some research has shown that B6 may help protect against memory
  • Vitamin | Definition, Types, Facts | Britannica
    vitamin, any of several organic substances that are necessary in small quantities for normal health and growth in higher forms of animal life Vitamins are distinct in several ways from other biologically important compounds such as protein s, carbohydrate s, and lipid s
  • Vitamins: What are they, and what do they do? - Medical News Today
    A vitamin is an organic compound, which means that it contains carbon It is also an essential nutrient that the body may need to get from food There are currently 13 recognized vitamins





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