Page 17 - Ebook Digestive System Grade XI

4. Vitamin
Vitamins are organic compounds necessary for the body; with a small
presence, the body cannot synthesize vitamins in the joints. Therefore, the need
for vitamins is widely obtained from outside the body. Only vitamins K and D can
be synthesized in the body. In the body, vitamins do not play a role in producing
energy. However, vitamins are only catalysts (accelerate the reaction) in
metabolic processes. If a person is deficient in vitamins, metabolism in the body
may be disturbed.
Vitamins are divided into several types, including vitamins A, B1, B2, B3,
B6, B11, B12, C, D, E, K, pantothenic acid, and vitamin H (biotin). While based on
their solubility properties, vitamins can be divided into two types: fat-soluble
vitamins and vitamins soluble in water. Fat-soluble vitamins are usually stored in
body fats, for example, vitamins A, D, E, and K. As for water-soluble vitamins,
they cannot be stored in the body and are only obtained from daily Food. Such as
vitamins, for example Vitamin B and vitamin C. For more details, you can pay
attention to Table 4 below.
Table 4. Vitamin requirements of humans

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