Gamma Oryzanol Quantity in Plant Products

Abstract

-oryzanol is a compound substance that has been found mostly in rice bran, both the white paddy rice and the black-purple glutinous rice. The main function of γ-oryzanol substance is to anti radicals, and to reduce cholesterol, and triglyceride. Additionally, γ-oryzanol substance can increase the HDL level in blood, can urge and stimulate pituitary gland. Furthermore, γ-oryzanol declines acidity in the stomach, and prevents coagulation of blood platelets in addition to decrease the amount of sugar in blood circulation. Most importantly, γ-oryzanol increase the level of insulin in diabetes patients. As mentioned before, γ-oryzanol decreases rancid in rice bran 10 times better than vitamin E. And because of all these advantages of γ-oryzanol, it leads us to do a research on γ-oryzanol in order that we might probably find a better source of γ-oryzanol. According to our experiments, we found that the black-purple glutinous rice, type “Kamnan”, delivered the highest amount of γ-oryzanol, which was 2.854% DM. But when it was compared to the black-purple glutinous rice, type “Kamdoisaket”, which yielded 20.160%DM. Meanwhile, other products brought to be measured the γ-oryzanol quantity was relatively low in DM number. For instance, Dokkhamfoi or saffron has no γ-oryzanol substance at all. Nonetheless, other agricultural products, such as, corn, sesame, linen seed, rep seed, cotton, soy bean, and wheat have the following low γ-oryzanol numbers, 0.241, 0.007, 0.014, 0.003, 0.003, 0.001 and 0.143% DM accordingly. However, when we compared the black-purple glutinous rice, type “Kamnan” and type “Kamdoisaket”, they gave a very close number of γ-oryzanol quantities, which were 2.854 and 2.693% DM accordingly. Likewise, the black-purple glutinous rice, type “Kamomkoi” gave the lowest γ-oryzanol quantities, which was 1.882% DM. In short, the black-purple glutinous rice gave the highest number of γ-oryzanol quantities in comparison to other agricultural products.