| 刘瑞花,刘玉兰,王 丹，等.吸附脱色对芝麻油中木酚素及维生素E影响的研究[J].中国油脂,2014,39(3):.[LIU Ruihua,LIU Yulan,WANG Dan，etc.Effects of adsorption bleaching on lignans and vitamin E in sesame oil[J].China Oils and Fats,2014,39(3):.] |
| 吸附脱色对芝麻油中木酚素及维生素E影响的研究 |
| Effects of adsorption bleaching on lignans and vitamin E in sesame oil |
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| DOI： |
| 中文关键词: 芝麻油 吸附脱色 芝麻木酚素 维生素E |
| 英文关键词:sesame oil adsorption bleaching sesame lignans vitamin E |
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| 中文摘要: |
| 采用不同用量的活性白土、活性炭对芝麻油进行吸附脱色，通过对脱色芝麻油中芝麻酚、芝麻素、芝麻林素、细辛素、维生素E含量及脱色率的测定，分析研究不同吸附剂对芝麻油中木酚素、维生素E含量及脱色效果的影响，并优化芝麻油吸附脱色工艺条件。结果显示：活性白土脱色芝麻油中芝麻素和芝麻林素含量大幅度降低（平均降幅31.33%和44.70%），芝麻酚含量降低幅度较小（平均降幅25%），细辛素含量从无到有并随活性白土用量的加大持续增加，维生素E损失较大（平均损失率13%），脱色率较高（平均65.15%）；活性炭脱色芝麻油中芝麻素和芝麻林素平均含量较脱色前基本没减少，芝麻酚含量明显降低（平均降幅41.2%），细辛素未检出，维生素E损失较少（平均损失率5.7%），脱色率较低（平均23.27%）。为提高脱色芝麻油中芝麻酚含量和脱色率，应选用活性白土脱色，且适宜的用量为3%；为提高脱色芝麻油中木酚素和维生素E含量，应选用活性炭脱色，且适宜的用量为2%；采用活性白土对芝麻油进行吸附脱色时，为减少脱色芝麻油中木酚素的损失，采用40 min、100℃的脱色条件为宜；为减少维生素E损失同时又能兼顾脱色效果，采用20～30 min、80℃脱色条件为宜。 |
| 英文摘要: |
| The sesame oil was bleached by different dosages of activated clay and activated carbon, then the contents of sesamol, sesamin, sesamolin, asarinin and vitamin E in bleached sesame oil and bleaching rate were detected to analyze the influences of different adsorbents on contents of lignans and vitamin E in sesame oil and bleaching effect, and the adsorption bleaching conditions were optimized. The results showed that in the sesame oil bleached by activated clay, the contents of sesamin and sesamolin decreased significantly (31.33% and 44.70% on average), the content of sesamol reduced slightly (25% on average), a small quantity of asarinin generated and its content increased with activated clay dosage increasing, the loss of vitamin E was great (13% on average), and the bleaching rate was high (65.15% on average);in the sesame oil bleached by activated carbon, the average contents of sesamin and sesamolin almostly unchanged comparing with that in the unbleached sesame oil, the content of sesamol decreased markedly (41.2% on average), asarinin wasn’t detected, the loss of vitamin E was minor (5.7% on average), but the bleaching rate was low(23.27% on average). Activated clay should be chosen as adsorbent with 3% of appropriate dosage so as to improve sesamol content in the bleached sesame oil and bleaching rate;while activated carbon should be chosen as adsorbent with 2% of appropriate dosage so as to improve the contents of lignans and vitamin E in the bleached sesame oil; in the adsorption bleaching process of sesame oil by activated clay, the appropriate bleaching conditions were obtained as follows：bleaching time 40 min and bleaching temperature 100℃ so as to reduce the loss of sesame lignans, while the appropriate bleaching conditions were obtained as follows：bleaching time 20-30 min and bleaching temperature 80℃ considering both the loss reduction of vitamin E and bleaching effect. |
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