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| Patterns of oxidative changes in the synthesis of phytosterol esters |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.230647 |
| KeyWord:phytosterol phytosterol esters dehydration oxidation |
| FundProject:国家重点研发计划低廉生物质资源高值化炼制关键技术与产业示范（2021YFC2103800）;江苏省重点国别产业技术研发合作项目（BZ2022041） |
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| Abstract: |
| To improve the quality of phytosterol esters, the effects of reaction temperature, substrate, nitrogen and antioxidant on oxidation and dehydration during phytosterol esters synthesis were investigated. The results showed that the levels of oxidation and dehydration products in phytosterol esters increased significantly with the increase of reaction temperature, the increase of fatty acid unsaturation, and the decrease of fatty acid chain length. The level of phytosterol oxidation products could be effectively reduced by nitrogen protection measures, while the level of dehydration products could be significantly reduced by the addition of antioxidants while decreasing the level of the oxidation products. In conclusion, the levels of oxidation and dehydration products during phytosterol ester synthesis can be effectively controlled by optimizing the reaction conditions, nitrogen protection, and addition of antioxidants. |
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