| 彭永健,许新德,张莉华，等.红花籽油制备共轭亚油酸工艺优化及其组成分析[J].中国油脂,2015,40(6):.[PENG Yongjian,XU Xinde,ZHANG Lihua，etc.Optimization of preparation of conjugated linoleic acid from safflower seed oil and its composition analysis[J].China Oils and Fats,2015,40(6):.] |
| 红花籽油制备共轭亚油酸工艺优化及其组成分析 |
| Optimization of preparation of conjugated linoleic acid from safflower seed oil and its composition analysis |
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| DOI： |
| 中文关键词: 红花籽油 共轭亚油酸 异构化 组成分析 |
| 英文关键词:safflower seed oil conjugated linoleic acid isomerization composition analysis |
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| 摘要点击次数: 1227 |
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| 中文摘要: |
| 利用碱异构化方法由红花籽油制备共轭亚油酸 (CLA)，以CLA转化率及非活性异构体含量为响应值，利用响应面法对异构化反应温度、反应时间和碱量进行了优化。得到最优的异构化条件为：反应温度167℃，反应时间6 h，0.5倍红花籽油质量的NaOH；该条件下CLA转化率可达97.9%，非活性异构体含量在2%左右。同时利用GC-MS对制备的CLA混合脂肪酸样品组成进行了分析，结果表明样品中总CLA含量77.31%，其中9c,11t-CLA和10t,12c-CLA占 75.30%，棕榈酸4.00%，硬脂酸1.40%，油酸10.10%，亚油酸1.63%，其他微量组分占5.56%。 |
| 英文摘要: |
| Conjugated linoleic acid (CLA) was prepared from safflower seed oil by alkali isomerization method. With conversion rate of CLA and content of non-active isomers as response values, reaction temperature, reaction time and alkali dosage of the isomerization were optimized by response surface methodology. The results showed that the optimal isomerization conditions were obtained as follows: reaction temperature 167 ℃，reaction time 6 h, alkali dosage 0.5 times of the mass of safflower seed oil; under these conditions, the conversion rate of CLA reached 97.9% and the content of non-active isomers was about 2%. The composition of the prepared CLA fatty acids mixture was analyzed by GC-MS, and the results indicated that the content of total CLA in the product was 77.31%, in which the contents of the two kinds of isomers 9c, 11t-CLA and 10t,12c-CLA, palmitic acid, stearic acid, oleic acid, linoleic acid and other trace components were 75.30%, 4.00%, 1.40%, 10.10%, 1.63% and 5.56%,respectively. |
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