2015年1月13日 · Some vitamins are chemically simpler than others; vitamin D, for example, occurs naturally only in the form shown in the graphic. Others, such as vitamin E, can come in the form of a range of structurally similar compounds, with the exact substituents varying.

Vitamins have been classified into two categories; fat soluble and water soluble. Fat soluble vitamins are vitamin A, D, E and K. water soluble vitamins are vitamin B complex (vitamins B1, B2, B3, B5, B6, B7, B9 and B12) and the vitamin C.

Vitamins are the essential nutrients that our body needs in small amounts. More specifically, an organic compound is defined as a vitamin when it is required by an organism, but not synthesised by that organism in the required amounts (or at all).

2025年1月18日 · What are the two main groups of vitamins? Traditionally vitamins are separated into two groups, the water-soluble and the fat-soluble vitamins. The water-soluble vitamins are thiamin, riboflavin, niacin, vitamin B, folic acid, vitamin B, pantothenic acid, biotin, and vitamin C.

2021年3月16日 · In this final chapter, we focus on the organic chemistry of folate, along with three other coenzymes: pyridoxal phosphate, thiamine diphosphate, and lipoamide. Humans can synthesize lipoamide, but we depend on dietary sources for the other three: pyridoxal phosphate is a form of vitamin B6, and thiamine diphosphate is a form of vitamin B1.

2020年8月14日 · Vitamins are organic compounds (meaning they contain Carbon) and they are vital nutrients that organisms require in limited amounts. Just like other essential nutrients, vitamins must be obtained from the diet since the organism can not make them (or can not make enough of them) for survival.

Definition of Vitamin and Mineral • Vitamins are organic compounds and minerals are chemical elements that are required as nutrients in small amounts by an organism. • A vitamin is: – An organic compound distinct from fats, carbohydrates and proteins – Natural component of foods, present in minute amounts

Currently, there are 13 recognised vitamins: vitamins A to E, including a range of B vitamins, and vitamin K. Generally, we can stick all of the vitamins into two broad categories. The fat soluble vitamins, vitamins A, D E, and K, can be stored by our bodies in the liver or in fatty tissues.

2024年5月28日 · The Body's Need for Vitamins and Minerals in the Diet; Molecular Basis for Water Solubility and Fat Solubility (e.g., of Vitamins) Polarity of Solvent and Solute; Thermodynamics of Dissolution; Structures and Functions of Key Vitamins; Effect of Olestra (Artificial Fat) on Vitamin Solubility

2024年1月1日 · Vitamins are a chemically heterogeneous group of organic compounds. Furthermore, they are grouped according to their solubility: the water-soluble vitamins—thiamine, riboflavin, niacin, B 6 (pyridoxine), vitamin B 12 (cobalamin), folate, pantothenic acid, biotin, and vitamin C; and the fat-soluble vitamins: A, D, E, K [18].