食品科学

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响应面法微波辅助乙醇提取红景天苷工艺优化

赵子铭,付 刚,李 诚   

  1. 1.四川农业大学生命科学与理学院,四川 雅安 625014;2.四川农业大学食品学院,四川 雅安 625014
  • 出版日期:2013-07-25 发布日期:2013-08-02

Optimization of Microwave-Assisted Extraction of Salidroside from Rhodida rosea by Response Surface Methodology

ZHAO Zi-ming,FU Gang,LI Cheng   

  1. 1. College of Life and Basic Sciences, Sichuan Agricultural University, Ya’an 625014, China;
    2. College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
  • Online:2013-07-25 Published:2013-08-02

摘要:

对红景天中红景天苷微波辅助乙醇提取工艺进行优化,并用高效液相色谱法检测红景天苷含量。实验先采用单因素试验分析原料粒度、微波时间、微波功率、乙醇体积分数、浸提温度、浸提时间、液料比7个因素对红景天苷提取率影响,再采用四因素三水平响应面分析法进行试验,并对各个因素的显著性和交互作用进行分析。结果表明:最优工艺条件为原料粒度40目、微波时间42s、微波功率480W、乙醇体积分数78%、提取温度72℃、浸提时间90min、液料比10:1(mL/g),此条件下红景天苷提取率为93.53%。

关键词: 红景天苷, 提取工艺, 优化, 响应面法

Abstract:

The process conditions for microwave-assisted extraction of salidroside from Rhodida rosea were optimized.
HPLC was used to detect salidroside. The effects of seven process parameters including material particle size, microwave
treatment time, microwave power, alcohol concentration, extraction temperature, extraction time and solid-liquid ratio on
the extraction rate of salidroside were investigated through single factor tests. The significance and interaction effects of
microwave treatment time, microwave power, ethanol concentration and extraction temperature were analyzed by response
surface analysis based on a three-level central composite design. The optimal microwave-assisted extraction conditions for
salidroside were achieved to be microwave treatment duration of 42 s, microwave power of 480 W, ethanol concentration of
78%, solid-liquid ratio of 1:10 (g/mL) and extraction temperature of 72 ℃, extraction time of 90 min and material particle
size of 40 mesh. Under these extraction conditions, the extraction rate of salidroside from Rhodida rosea was up to 93.53%.

Key words: salidroside, extraction process, optimization, response surface methodology