响应面法优化超声提取牡丹籽壳低聚茋类化合物的工艺研究  

Optimization of ultrasound-assisted extraction of oligomeric stilbene compound from peony seed shell by response surface methodology

作　　者：刘丹丹 郑旭煦 殷钟意[2] 衡银雪[1] 

机构地区：[1]重庆工商大学环境与资源学院,重庆400067 [2]重庆工商大学催化与功能有机分子重庆市重点实验室,重庆400067

出　　处：《中国油脂》2017年第12期108-112,共5页China Oils and Fats

基　　金：重庆市科技支撑示范工程项目(cstc2012jcsf-jfzh X0008);重庆市高校优秀成果转化资助重大项目(KJZH14105)

摘　　要：以牡丹籽壳低聚茋类化合物得率为评价指标,采用单因素实验及响应面实验对超声提取牡丹籽壳低聚茋类化合物工艺条件进行优化,并对提取物进行抗氧化活性测试。结果表明,最佳提取条件为:液料比22∶1,提取时间40 min,提取温度62℃,甲醇体积分数70%。在最佳条件下,牡丹籽壳低聚茋类化合物得率为17.68%。所提取的牡丹籽壳中的低聚茋类化合物的DPPH自由基清除率与维生素C相当,亚铁离子还原能力低于维生素C。With the yield of oligomeric stilbene compound as evaluation index, the ultrasound-assisted extraction conditions of oligomeric stilbene compound from peony seed shell were optimized by single factor experiment and response surface methodology, and the antioxidant activity of the extract was tested. The results showed that the optimal extraction conditions were obtained as follows： ratio of liquid to solid 22∶1, extraction time 40 min, extraction temperature 62？℃, volume fraction of methanol 70%. Under the optimal conditions, the yield of oligomeric stilbene compound was 17.68%. The scavenging activity of oligomeric stilbene compound on DPPH free radical was similar to that of vitamin C, while the ferrous ion reduction ability was lower than that of vitamin C.

关 键 词：牡丹籽壳 低聚芪 响应面法 抗氧化活性 

分 类 号：TS229[轻工技术与工程—粮食、油脂及植物蛋白工程] TQ645[轻工技术与工程—食品科学与工程]