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| Preparation of lanolin acids from lanolin |
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| DOI：10.12166/j.zgyz.1003-7969/2020.03.007 |
| KeyWord:lanolin lanolin acids calcination alcohol washing |
| FundProject:国家自然科学基金（31701559） |
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| Abstract: |
| Lanolin was used as raw material, and on the basis of the existing saponification process of lanolin, the steps of calcination and alcohol washing were added. The factors affecting calcination and alcohol washing were preliminarily investigated, and the fatty acid composition of the produced lanolin acids was analyzed by gas chromatography-mass spectrometry. The effects of the dosage of anhydrous calcium chloride, calcination temperature and calcination times on the yield of lanolin acids were investigated. The effects of solvent type, alcohol washing temperature and alcohol washing times on the purity of lanolin acids were investigated. The optimal conditions for calcination were obtained as follows: 1.2 times the theoretical value of anhydrous calcium chloride, calcination temperature 50 ℃ and calcination time 1 h. The optimal conditions for alcohol washing were obtained as follows: anhydrous ethanol as solvent, alcohol washing temperature 60 ℃ and alcohol washing times four. Under the optimal conditions, the yield of lanolin acids reached 82.38% and the purity was 84.76%. The content of branched fatty acids in lanolin acids was 64.35%. |
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