食品科学 ›› 2012, Vol. 33 ›› Issue (20): 138-143.

• 工艺技术 • 上一篇    下一篇

海英菜多糖提取工艺的响应面法优化及其体外抗氧化作用

刘玉芬,夏海涛,徐芹喜   

  1. 淮海工学院化学工程学院
  • 收稿日期:2012-06-14 修回日期:2012-09-05 出版日期:2012-10-25 发布日期:2012-11-09
  • 通讯作者: 刘玉芬 E-mail:xht161006@sohu.com

Crude Polysaccharides from Suaeda salsa L.: Optimization of Extraction Process Using Response Surface Methodology and Antioxidant Activity

  • Received:2012-06-14 Revised:2012-09-05 Online:2012-10-25 Published:2012-11-09

摘要: 以单因素试验为基础,选择提取温度、提取时间、液料比三因素三水平进行Box-Behnken组合试验,对野生海英菜粗多糖提取工艺参数进行优化分析。结果表明海英菜粗多糖水浸提的最佳工艺条件为提取温度87℃、提取时间3.5h、液料比31.5:1(mL/g),在此条件下海英菜粗多糖得率达到2.028%。以VC和叔丁基对苯二酚为对照,测定脱蛋白海英菜多糖的体外抗氧化作用,结果表明海英菜多糖的还原能力、对超氧阴离子自由基和羟自由基的清除能力均表现出较好的效果,清除超氧阴离子自由基和羟自由基的IC50分别为0.841mg/mL和0.712mg/mL,其抗氧化能力低于VC,与叔丁基对苯二酚相近。

关键词: 海英菜, 多糖, 响应面法, 抗氧化作用

Abstract: Response surface methodology was used to optimize the extraction of crude polysaccharides from Suaeda salsa L. Three extraction parameters including temperature, time and solvent-to-solid ratio were identified as main factors affecting the extraction yield of crude polysaccharides. The extraction parameters were optimized by a three-variable, three-level Box-Bohnken experimental design combined with response surface analysis. The optimal conditions for polysaccharide extraction from Suaeda salsa L. were 3.5 h extraction with hot water (87 ℃) at a solvent/solid ratio of 31.5 mL/g, resulting in an extraction yield of polysaccharides of 2.028%. As demonstrated by comparison with VC and TBHQ, crude polysaccharides from S. salsa L. had excellent reducing power and high abilities to scavenge superoxide anion and hydroxyl free radicals with IC50 values of 0.84 mg/mL and 0.71 mg/mL, respectively. The antioxidant effect of crude polysaccharides from S. salsa L. was lower than that of VC but similar to that of TBHQ.

Key words: Suaeda salsa L., polysaccharides, response surface methodology, antioxidant activity

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