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林产化学与工业

林产化学与工业 ›› 2009, Vol. 29 ›› Issue (6): 73-77.

• 研究报告 • 上一篇    下一篇

响应面法优化超临界CO2萃取蔗皮二十八烷醇工艺

霍艳荣, 高前欣, 吴峰华, 杨虎清   

  1. 浙江林学院 农业与食品科学学院, 浙江 临安 311300
  • 收稿日期:2008-10-06 修回日期:1900-01-01 出版日期:2009-12-30 发布日期:2009-12-30
  • 通讯作者: 杨虎清,副教授,主要从事农产品贮藏与加工研究;E-mail:yanghq@zjfc.edu.cn。

Optimization for Supercritical CO2 Extraction of Octacosanol from Sugar-cane Skin with Response Surface Methodology

HUO Yan-rong, GAO Qian-xin, WU Feng-hua, YANG Hu-qing   

  1. College of Agriculture and Food Science, Zhejiang Forestry University, Lin'an 311300, China
  • Received:2008-10-06 Revised:1900-01-01 Online:2009-12-30 Published:2009-12-30

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摘要： 以果蔗皮为试验原料,采用响应曲面分析法(RSM)优化超临界CO2萃取蔗皮二十八烷醇的工艺条件。在单因素试验的基础上,选取萃取压力、温度和时间为影响因子,应用Box-Behnken中心组合进行了3因素3水平的试验设计。验证了二次多项数学模型的有效性,并探讨了萃取压力、温度、时间对二十八烷醇萃取物产率的作用规律。统计分析表明压力、温度以及压力和时间的交互作用对二十八烷醇的提取量有显著影响。根据该模型进行了工艺参数的优选,试验所得二十八烷醇超临界CO2萃取的优化工艺条件为:压力 31.2 MPa,温度 44.8℃,时间 226.17 min,该条件下提取量高达 7.5855 mg/g。

关键词: 响应曲面分析法, 超临界CO2萃取, 二十八烷醇, 工艺模型

Abstract: Response surface methodology (RSM) was used for optimizing the extraction of octacosanol from sugar-cane skin. Based on single-factor experiments, three independent variables, namely:pressure, temperature and time were selected as affecting factors during extraction. The experiments were arranged according to Box-Behnken central composite experiment design. The model of a second order quadratic equation was established. The adequacy of the model equation for predicting the optimum response values was verified effectively. Effects of pressure, temperature and time on octacosanol yield were investigted. Statistical analysis of the experiment indicated that individual factors such as pressure, temperature, and interaction between pressure and time had very significant effects on octacosanol yield. The optimum conditions for octacosanol yield were found to be pressure 31.2 MPa, temperature 44.8℃ and extraction time 226.17 min at which the yield was 7.5855 mg/g.

Key words: response surface methodology(RSM), supercritical CO2 extraction, 1-octacosanol, technology model

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