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| Effects of DAG on activity of antioxidants in oils |
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| DOI：10.12166/j.zgyz.1003-7969/2020.10.011 |
| KeyWord:DAG reverse micelle antioxidation prooxidation |
| FundProject:国家自然科学基金资助项目（C200201） |
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| Abstract: |
| The effect of sn-1,3-dipalmitate (DAG)on the oxidation stability of pure rapeseed oil was investigated to find out its mechanism in oil during storage and provide a scientific basis for oil processing and storage. Rapeseed oil only containing triglyceride components was prepared by column chromatography purification, the critical reverse micelle concentration of DAG in pure rapeseed oil was determined,and the effect of DAG and combined effects of DAG and antioxidant (γ-tocopherol, TBHQ, BHA and BHT) on the oxidation stability of pure rapeseed oil in reverse micelle system were studied.The results showed that the critical micelle concentration of DAG in pure rapeseed oil was 0.5%. DAG had a prooxidant effect on pure rapeseed oil in reverse micelle system. DAG had different effects on the activity of different types of antioxidants,and it enhanced the activities of the weak polar antioxidants γ-tocopherol and BHT, but weakened the activities of the strong polar antioxidants TBHQ and BHA. |
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