| Eight kinds of coix seeds with or without peel(including coix seeds without peel from Kanglaite corporation) were collected from northern, central and southern China, and the possible bioactive chemical compositions including sterols, tocopherols, squalene, triglyceride, fatty acid and glyceride in the coix seed oils（CSOs） were determined. The results showed that 25-hydroxy-24-methylcholesterol,(3α)-stigmasta-7,24(28)-dien-3-yl and(3α,5α)-stigmastan-3-yl were first found in CSOs. The active substance total content of PLO and OLO in coix seed from Kanglaite corporation was the highest. CSOs were rich in unsaturated fatty acids and the ratio of UFA to SFA was between 5.06 and 662, close to that of olive oil(4.57-5.83). Also, CSOs contained abundant bioactive substances such as sterols and squalene(5.13-8.30 mg/g) and tocopherols(0.64-1.57 mg/g),higher than those in olive oil(0.96-1.79 mg/g, 0.26-1.0 mg/g), thus CSO could be considered as a potential source of oil with health-enhancing value. |
