响应面分析优化酶辅助水提紫苏叶挥发油的工艺研究Optimization of Cellulase Assisted Extraction of Volatile Oil from Perilla frutescens Leaves by Response Surface Methodology
滕晓焕,李家洲,蔡群娣,林沙,欧邦燕,黄志健
摘要(Abstract):
对纤维素酶辅助提取紫苏叶挥发油的工艺进行优化。采用单因素试验考察酶解时间、酶解pH、酶解温度及酶用量对挥发油得率的影响,得到最佳工艺条件为酶解时间45min、pH 4.6、温度55℃、酶用量0.0202g/10g(紫苏叶),在最佳条件下挥发油的得率为0.409%。再利用Design-Experts 8.0进行响应面实验设计,研究了各变量交互作用及其对紫苏挥发油得率的影响。结果表明:pH和酶用量属于显著性影响因子,对pH和酶用量的进一步分析表明在实验空间中存在响应面,其极大值点为pH 4.84、酶用量0.0213g/10g(紫苏叶),在极大值点可获得最高紫苏油得率为0.4896%,较单因素的实验结果提高了19.7%。
关键词(KeyWords): 紫苏;挥发油;纤维素酶;提取;响应面分析
基金项目(Foundation): “广东高校特色调味品工程技术开发中心”开放课题(GCZX-B1103)
作者(Author): 滕晓焕,李家洲,蔡群娣,林沙,欧邦燕,黄志健
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