| Pure rice bran and pure rice germ were isolated from raw material rice bran, then rice bran oil and rice germ oil were separately obtained by solvent extraction method, and the qualities of the oils were analyzed and compared to study the nutritional quality of rice germ and rice germ oil. The results showed that rice germ had higher contents of crude fat and crude protein and lower content of crude fiber than rice bran,which were 27.06%,19.50% and 4.88%, respectively; the acid value, peroxide value,contents of vitamin E, oryzanol and phytosterol of rice germ oil were 21.7 mgKOH/g, 6.1 mmol/kg, 43.18 mg/100 g,0.47% and 3.07%, respectively, in which the acid value, peroxide value and content of oryzanol of rice germ oil respectively decreased by 23.8 mgKOH/g, 1.7 mmol/kg and 0.93 percentage point compared with rice bran oil, while the content of vitamin E increased by 17.18 mg/100 g and the content of phytosterol had little difference. Rice germ oil was superior to rice bran oil in acid value and vitamin E content, and fresh rice germ could be used as nutritious product as well as the raw material of high quality edible oil. |
