Method s: Soxhlet extractor was previously applied to grape seeds for the remover of oils with petroleum benzine. 方法:对新疆葡萄酒厂废渣中葡萄籽用石油醚脱脂,脱脂后的葡萄籽用乙醇提取。
In the meanwhile, the effects of varied acids for protecting third carbonyl group were investigated. Through the trial and error, the mixture of anhydrous alcohol/ petroleum benzine is the good solvent of target molecule recrystal. 考察了酸性对保护3位羰基的影响,确定了无水乙醇/石油醚是目标分子重结晶的最佳溶剂体系。