吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (02): 515-520.

• 论文 • 上一篇    

玉米须多糖微波提取工艺及其红外光谱结构分析

赵文竹1, 殷涌光1, 于志鹏1, 于一丁2, 刘静波2   

  1. 1. 吉林大学 生物与农业工程学院, 长春130022;
    2. 吉林大学 军需科技学院, 长春 130062
  • 收稿日期:2011-01-14 出版日期:2012-03-01 发布日期:2012-03-01
  • 通讯作者: 刘静波(1962-),女,教授,博士.研究方向:营养与功能食品.E-mail:ljb168@sohu.com E-mail:ljb168@sohu.com
  • 作者简介:赵文竹(1986-),女,博士研究生.研究方向:农产品加工.E-mail:zhaowenzhu777@163.com
  • 基金资助:

    吉林省科技厅农业重点项目(20080224).

FTIR structure analysis and microwave extraction of polysaccharides from corn silk

ZHAO Wen-zhu1, YIN Yong-guang1, YU Zhi-peng1, YU Yi-ding2, LIU Jing-bo2   

  1. 1. College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China;
    2. College of Quartermaster Technology, Jilin University, Changchun 130062, China
  • Received:2011-01-14 Online:2012-03-01 Published:2012-03-01

摘要: 采用Plackett-Burman设计方法筛选出了影响微波提取玉米须多糖的显著性因素:微波提取温度、提取功率和液固比。在考察影响多糖得率主效应因素变化趋势的基础上,结合最陡爬坡试验进一步逼近最优提取条件,通过中心组合试验及响应面分析优化微波法提取玉米须多糖的工艺条件,得到回归模型。通过数学统计分析可知,所得模型与实际值拟合较好。最后求极大值得到微波法提取玉米须多糖中心组合设计的最优工艺参数为:温度为85 ℃,功率为400 W,液固比为80∶1,此条件下多糖含量实际值为9.36%。另外,红外光谱分析发现多糖类物质具有明显的多糖物质特征吸收峰。

关键词: 食品加工技术, 微波辐射法, 玉米须多糖, 中心组合设计, 响应面, 傅里叶变换红外光谱

Abstract: The Plackett-Burnam design was applied to screen out the key factors which may affect the content of corn silk polysaccharides extracted by microwave irradiation. Three key factors were identified: the microwave extraction temperature, extraction power, and the ratio of liquid to corn silk. The path of steepest ascent was used to approach the optimal region of the extraction condition, which was then further optimized using central composite design and response surface analysis. The regression model was obtained. The optimal extraction condition was obtained as: extraction temperature of 85 ℃, extraction power of 400 W, water to corn silk ratio of 80. Under such condition the content of extracted corn silk polysaccharides was 9.36%. In the IR spectrum typical characteristic absorption peaks of polysaccharides were observed.

Key words: food processing, microwave irradiation, corn silk polysaccharides, central composition design, response surface method, Fourier transform infrared spectroscopy(FTIR)

中图分类号: 

  • TS209
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