食品科学 ›› 2010, Vol. 31 ›› Issue (20): 173-177.doi: 10.7506/spkx1002-6630-201020035

• 工艺技术 • 上一篇    下一篇

响应曲面法优化琼胶水解条件

杨贤庆1,刘 刚1 , 2,戚 勃1,李来好1,郝淑贤1,刁石强1   

  1. 1.中国水产科学研究院南海水产研究所 2.上海海洋大学食品学院
  • 收稿日期:2010-04-30 修回日期:2010-09-14 出版日期:2010-10-25 发布日期:2010-12-29
  • 通讯作者: 刘刚 E-mail:feiyanggoat@sina.com.cn
  • 基金资助:

    国家“863”计划项目(2007AA10Z345);农业部公益性行业(农业)科研专项(200903030-E);
    广东省海洋渔业科技推广专项(A200899E01;A200901E02);国家海洋局海洋公益性行业科研专项(201005020)

Optimization of Acid Hydrolysis of Agar by Response Surface Methodology

YANG Xian-qing1,LIU Gang1,2,QI Bo1,LI Lai-hao1,HAO Shu-xian1,DIAO Shi-qiang1   

  1. 1. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China;
    2. College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
  • Received:2010-04-30 Revised:2010-09-14 Online:2010-10-25 Published:2010-12-29
  • Contact: LIU Gang1 E-mail:feiyanggoat@sina.com.cn

摘要:

采用酸水解法对琼胶进行降解并结合苯酚- 硫酸法测定琼胶低聚糖的含量。在单因素试验的基础上,利用响应曲面法优化水解工艺,建立盐酸浓度(X1)、水解时间(X2 ) 和固液比(X3 ) 与水解率( Y ) 之间的数学模型:Y =81.5933+0.7175X1+1.8938X2+2.7313X3-3.1567X12-3.3042X22-3.3092X32-0.6625X1X2+0.0475X1X3-0.8000X2X3,确定琼胶水解的最佳工艺条件,即盐酸浓度0.105mol/L、水解时间96min、固液比4.5:100(g/mL),在此最佳工艺条件下进行水解,琼胶水解率为81.43%。

关键词: 琼胶, 酸水解, 响应曲面法

Abstract:

Agar was subjected to acid hydrolysis and the content of agar oligosaccharides was determined by hydrochloric acid and phenol-sulfuric acid method. On the basis of single factor experiments, the hydrolysis procedure was optimized using response surface methodology, and a mathematical regression model (Y= 81.5933+0.7175X1+1.8938X2+2.7313X3-3.1567X12-3.3042X22-3.3092X32-0.6625X1X2+0.0475X1X3-0.8000X2X3) was established for predicting the yield of agar oligosaccharides (Y) at different levels of hydrochloric acid concentration (X1), hydrolysis time (X2), and solid/liquid ratio (X3). The optimal hydrolysis conditions were determined to be hydrochloric acid concentration of 0.105 mol/L, solid/liquid ratio of 4.5:100 (g/mL) and hydrolysis time of 96 min. The yield of agar oligosaccharides was up to 81.43% under the optimal hydrolysis conditions, which was in good agreement with the predicted value.

Key words: agar, acid hydrolysis, response surface methodology

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