Vitamind

1.0 Introduction

Vitamin was discovered in the early 20th century by man and it turn out to be an interesting nutrition science since then. Researcher found out that a balanced and good diet takes more than only pure carbohydrate, protein, fat, mineral, and water. These dietary essential was later known as vitamine.

As discovery was made, the e on vitamine was dropped and now as we know vitamin. Each discovery made, scientist gave name for each substance and since it’s only a few of them, they gave name by alphabetical order (Vitamin A, Vitamin B, etc.).

Vitamins are organic compounds. It has several of function as regulator and required in human’s diet since it can be produced by human body itself. That’s why vitamin intake in diet was essential for human. Deficiency of intake in vitamins may lead to various of problem (leading to clinically deficiency disease). While excess can also cause overdose and malfunctions of organs (leading to toxicity).

Vitamins classified into two general groups, water-soluble and fat-soluble. Our body handles these vitamins differently. They have different metabolism path. Storage location, time range and how to store is also different.

Fat soluble vitamins are hydrophobic. It can only be absorbed efficiently when there is fat absorption. Fat-soluble vitamins is transported in the blood in lipoprotein (conjugated protein that bind fats) or attached to specific binding proteins.

Vitamin D is classified in fat-soluble vitamins. Although, Vitamin D is not strictly a vitamin, since it can be synthesized in the skin, and under most conditions that is the major source of the vitamin (Murray, 2010). This is because vitamin as its definition cannot be synthesized in body and need to have it in dietary intakes. But vitamin D has unique property which able to be produced in our body.

Vitamin D is a unique vitamin because it may loss it definition as vitamin when human attain adequate sunlight with proper wavelength. The most common...