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| Fatty acid composition and oxidation stability of wild Elsholtzia oil |
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| DOI： |
| KeyWord:Elsholtzia oil fatty acid oxidation stability antioxidant |
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| Abstract: |
| The fatty acid composition of wild Elsholtzia oil was determined by GC,the oxidation stability of Elsholtzia oil was determined by Rancimat method and the antioxidant effects of different antioxidants on Elsholtzia oil were analyzed and compared. The results showed that the content of unsaturated fatty acids in Elsholtzia oil was above 90%, and the content of linolenic acid was 58.65%. There was a linear relationship between natural logarithm of induction period and temperature, and the shelf life at 20?℃ of Elsholtzia oil was 52.8 d. When the dosages of antioxidants were the same, the antioxidant effect of TBHQ was the best. Citric acid had a good synergistic effect. When 0.02% TBHQ and 0.01% citric acid were added, Elsholtzia oil displayed a prominent antioxidant effect with the shelf life at 20?℃ 334.9 d, extending 282.1 d compared with the oil without antioxidant. |
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