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| Effect of processing method on wax content in three vegetable oils |
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| KeyWord:vegetable oil processing method wax content cold press hot press extraction solvent |
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| Abstract: |
| The effects of extraction solvent, method of oil press (cold press and hot press), shell and roasting temperature on the wax content in peanut oil, sunflower seed oil and oil-tea camellia seed oil were studied. The results showed that for peanut oil, using ether and acetone as extraction solvent, the change of wax content in oil was not significant(P>0.05), but it was significantly different (P<0.05) from petroleum ether (30-60?℃). For sunflower seed oil and oil-tea camellia seed oil, the effects of extraction solvent were significantly (P<005), and the wax content in oil extracted with petroleum ether (30-60?℃) was the highest, followed by ether and acetone. The wax content in three vegetable oils prepared by cold press was higher than that of hot press. Compared with the difference of wax contents in oils prepared from peanut containing shell and pure kernel, the influence of shell was very obvious in the process of preparing sunflower seed oil and oil-tea camellia seed oil. There was no regular effect of roasting temperature on the wax content in three vegetable oils. |
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