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| Optimization of wax removal from sunflower seed oil by response surface methodology |
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| DOI： |
| KeyWord:sunflower seed oil dewaxing fatty acid composition |
| FundProject:科技部“十三五”国家重点研发计划(2016YFD 0401401) |
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| Abstract: |
| The crude sunflower seed oil with high oleic acid was used as raw material, and the influences of crystallization time, crystallization temperature, diatomaceous earth dosage and stirring rate on the dewaxing effect were investigated by single factor experiment and response surface methodology. In addition, the fatty acid compositions of the sunflower seed oil before and after dewaxing were determined. The results showed that the optimal dewaxing parameters were obtained as follows: crystallization time 16 h, crystallization temperature 11 ℃, diatomaceous earth dosage 1.5% and stirring rate 8 r/min. Under the optimal conditions, the wax content of dewaxed sunflower seed oil was 22.50 mg/kg. There was no significant change in the fatty acid composition of sunflower seed oil before and after dewaxing, indicating that dewaxing would not affect the fatty acid composition of sunflower seed oil. |
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