食品科学 ›› 2013, Vol. 34 ›› Issue (2): 6-10.

• 工艺技术 • 上一篇    下一篇

响应面分析法优化纤维素酶提取紫苏多糖工艺

吕长鑫   

  1. 渤海大学化学化工与食品安全学院
  • 收稿日期:2011-10-07 修回日期:2012-12-27 出版日期:2013-01-25 发布日期:2013-01-15
  • 通讯作者: 吕长鑫 E-mail:applexu001@163.com

Optimization of Cellulase Extraction Conditions for Crude Polysaccharides from Perilla frutescens crispa by Response Surface Methodology

  • Received:2011-10-07 Revised:2012-12-27 Online:2013-01-25 Published:2013-01-15

摘要: 摘要:紫苏多糖具有保健、抗菌等功能,本文进行了纤维素酶提取法提取紫苏多糖的工艺优化。分别研究了日光干燥、自然阴干、真空干燥、鼓风干燥和微波干燥方法对紫苏多糖含量的影响,结果表明,真空干燥紫苏叶中多糖含量较高;采用单因素试验研究了纤维素酶的添加量、酶解温度和酶解时间对紫苏多糖提取的影响,再利用Box-Benhnken试验和响应面分析法,研究了各自变量交互作用及其对紫苏多糖提取率的影响,模拟得到二次多项式回归方程的预测模型。通过回归分析确定优化的提取工艺技术参数为:加酶量(X1) 1771.85U/g、酶作用温度(X2) 53.7℃、酶解时间(X3) 36.2min,紫苏多糖提取率的实测结果(17.91mg/g)与响应面拟合所得方程的预测值(18.21mg/g)符合良好。

Abstract: Abstract: Perilla polysaccharide is a functional ingredient. The cellulose extraction process of polysaccharides from perilla was Optimized in this paper. Diffient drying methods which influence the polysaccharide content were studied, including sunshine drying, natue wind drying, vacuum drying, blast drying and microwave drying. vacuum drying was the best pre-process method for polysaccharide extraction. Based on the experiment of single factor, the mathematical regression model was established about the dependent variable (extraction yield of polysaccharides) and independent variables (adding content of cellulose, extraction temperature, extraction time) through Box-Benhnken center combination design and response surface analysis. The optimum extraction conditions were as follow: adding content of cellulose of 1771.85U/g, extraction temperature of 53.7℃ and extraction time of 36.2min. Under these condition, the practical yield of polysaccharides (17.91mg/g) was consistent with the predictive yield of polysaccharides (18.21mg/g).

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