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| 响应面法优化葵花籽油中蜡质脱除工艺 |
| Optimization of wax removal from sunflower seed oil by response surface methodology |
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| DOI： |
| 中文关键词: 葵花籽油 脱蜡 脂肪酸组成 |
| 英文关键词:sunflower seed oil dewaxing fatty acid composition |
| 基金项目:科技部“十三五”国家重点研发计划(2016YFD 0401401) |
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| 中文摘要: |
| 以高油酸葵花籽原油为原料，采用冷冻脱蜡工艺，通过单因素试验和响应面试验研究了养晶时间、养晶温度、硅藻土添加量、搅拌速率对脱蜡效果的影响，并对脱蜡前后葵花籽油的脂肪酸组成进行了检测。结果表明：最优脱蜡工艺条件为养晶时间16 h、养晶温度11 ℃、硅藻土添加量1.5%、搅拌速率8 r/min，在此条件下脱蜡葵花籽油中蜡质含量为22.50 mg/kg；脱蜡前后葵花籽油脂肪酸组成无显著变化，说明脱蜡不会影响葵花籽油的脂肪酸组成。 |
| 英文摘要: |
| 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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