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林产化学与工业 ›› 2007, Vol. 27 ›› Issue (S1): 125-128.

• 研究报告 • 上一篇    下一篇

微波辅助提取桔皮中天然抗氧化剂的研究

杨静, 秦永剑, 张加研, 陈育兰, 童显霞   

  1. 西南林学院 木质科学与装饰工程学院, 云南 昆明 650224
  • 收稿日期:2007-06-20 修回日期:1900-01-01 出版日期:2007-10-20 发布日期:2007-10-20

Study on Microwave-assisted Extraction of Natural Antioxidant from Orange Peel

YANG Jing, QIN Yong-jian, ZHANG Jia-yan, CHEN Yu-lan, TONG Xian-xia   

  1. Faculty of Wood Science & Technology, Southwest Forestry College, Kunming 650224, China
  • Received:2007-06-20 Revised:1900-01-01 Online:2007-10-20 Published:2007-10-20

摘要: 以桔皮为原料,乙醇为溶剂,在微波功率900 W,提取温度75℃条件下,通过单因素试验探讨了乙醇体积分数、浸提时间、料液比对总黄酮提取率的影响,并通过正交试验对桔皮中黄酮类化合物提取工艺进行了研究.结果表明,用微波法从桔皮中提取总黄酮的最佳工艺条件为:乙醇体积分数75%,浸提时间7 min,料液比1:30.用此工艺提取的总黄酮得率为12.04%.通过1,1-二苯基-2-苦基肼(DPPH)法测定不同工艺条件下桔皮提取物的抗氧化性能,表明不同工艺的桔皮提取物均有一定的清除DPPH自由基的能力,其清除率与总黄酮的含量有一定的量效关系.

关键词: 桔皮, 微波辅助提取, 抗氧化性, 自由基

Abstract: A microwave-assisted extraction, using ethyl alcohol as solvent was adopted for extracting flavonoids from orange peel. The effect on extraction rate of flavonoids of factors such as concentration of alcohol, extraction time and the ratio of solid to liquid were investigated. The results from the single factors and orthogonal tests showed that when the conditions were 75% alcohol (valume fraction), extraction time 7 min and the ratio of solid to liquid 1:30, the yield of flavonoids was up to 12.04%.The free redical scavenging effects of orange peel extraction was determined by DPPH method. Orange peel extracts obtained under various conditions showed definite scavenging effects on DPPH redical. A significant positive correlation was found between DPPH scavenging rate of extracts and flavonoids content.

Key words: orange peel, microwave-assisted extraction, natural antioxidant, free redical

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