Process Of Oleanolic Acid Extracted From The Residue Of Wineries

Objective:It was studied to extract oleanolic acid from wasteresidue of graPe winery. Methods: EtOH eXtract was charged by acid andNaOH sol. Orthogonal design was used to optimize the better extractconditions. Result: The better eXtract conditions:First, waste residue wastwice eXtfacted by 95% EtOH .Second, add acid to pHl to separate the2 从葡萄�'厂生产废渣中提取齐墩果酸的工艺研究crystal out. Third, the semifinished product was washed by 5%NaOH sol.three times. The obtained product's purity is 95.67% and the rate of obtain is 87.15%.