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Natural Antioxidants in Rice Bran Oil
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Nowadays, people concern more about health especially antioxidants in food because free radicals are the cause of several diseases including cancer, coronary diseases, as well as skin degeneration. Thus, rice bran oil is popular among health-conscious consumers because it is rich in natural antioxidants.
• Vitamin E Tocopherol is generally found in vegetable oils.
• Vitamin E Tocotrienol is found most in rice bran oil. It is better than Vitamin E Tocopherol in terms of antioxidation.
• Oryzanol is found only in rice bran oil, not in other common vegetable oils. It is found that Oryzanol is 6 times better than Vitamin E – Alpha Tocopherol in antioxidation.
Being high in natural antioxidants, King Rice Bran Oil has high stability in both low and high temperatures. In laboratory, it is found that King Rice Bran Oil, without any synthetic antioxidants, has a shelf life of more than 24 months.
In addition to being used as cooking oil, rice bran oil is also used as an ingredient in cosmetics and spa products in Japan, the U.S. and Thailand.
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Comparative Table of Natural Antioxidants Profile of Edible Oils
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Oil
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Vitamin E 1
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Oryzanol (ppm.) 2
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Total (ppm.)
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Total Tocopherol (ppm.)
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Total Tocotrienol (ppm.)
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Rice bran oil
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287
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558
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2,000
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2,845
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Olive oil
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51
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-
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-
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51
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Corn oil
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888
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47
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-
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935
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Canola oil
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650
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-
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-
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650
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Sunflower oil
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565
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-
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-
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565
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Safflower oil
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645
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-
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-
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645
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Soybean oil
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1,055
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-
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-
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1,055
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Peanut oil
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370
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-
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-
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370
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Palm oil
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371
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659
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-
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1,030
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Remark : ppm. = part per million or milligram per kilogram
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Source :
1 Average value adapted from Eitenmiller, R., 1997, “Vitamin E content of fats and oils – nutritional implications“, Food Technology, vol. 51, no. 5, p. 80.
2 Laboratory of Thai Edible Oile Co., Ltd.
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