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| Chemical synthesis of β-sitosterol linolenic acid esters at low temperature |
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| DOI： |
| KeyWord:β-sitosterol linolenic acid phytosterol ester esterification 4-dodecylbenzenesulfonic acid |
| FundProject:河南省科技攻关项目（192102110211） |
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| Abstract: |
| An acid catalyst 4-dodecylbenzenesulfonic acid (DBSA) was used to catalyze the esterification of β-sitosterol and linolenic acid to synthesize β-sitosterol linolenic acid esters under solvent free conditions. The optimal reaction conditions were optimized by single factor experiment and response surface methodology. The results showed the optimal reaction conditions were obtained as follows: reaction temperature 76 ℃, reaction time 12 h, molar ratio of β-sitosterol to fatty acid 1∶ 1.7 and DBSA dosage 16%. Under the optimal conditions, the conversion rate of β-sitosterol was up to 9755%. The infrared spectroscopy test showed that the target product was successfully synthesized, and the synthesis of β-sitosterol linolenic acid esters at low temperature was feasible. |
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