二次回归正交旋转组合设计优化复合酶法提取甘蔗梢多酚工艺

【目的】利用二次回归正交旋转组合设计优化复合酶法提取甘蔗梢多酚工艺条件,为甘蔗梢的综合利用提供技术参考。【方法】以粤糖159号蔗梢为试验原料,在单因素试验基础上,以甘蔗梢多酚提取量为考察指标,选择复合酶用量、p H、提取温度、提取时间为试验因素,采用4因子二次回归旋转组合设计(1/2实施)对甘蔗梢多酚提取工艺进行优化,确定复合酶法最佳工艺条件。【结果】建立甘蔗梢多酚提取量(Y)对复合酶用量(X1)、p H(X2)、提取温度(X3)及提取时间(X4)4个试验因素的二次正交回归模型:Y=4.51155+0.16908X1+0.20925X3-0.14736X32,该模型拟合性较好,其中复合酶用量和...

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Published in南方农业学报 Vol. 47; no. 3; pp. 459 - 465
Main Author 张思原 黄慧玲 周永升 李玉铭 陆海勤
Format Journal Article
LanguageChinese
Published 广西大学 轻工与食品工程学院,南宁,530004 2016
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ISSN2095-1191
DOI10.3969/j:issn.2095-1191.2016.03.459

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Summary:【目的】利用二次回归正交旋转组合设计优化复合酶法提取甘蔗梢多酚工艺条件,为甘蔗梢的综合利用提供技术参考。【方法】以粤糖159号蔗梢为试验原料,在单因素试验基础上,以甘蔗梢多酚提取量为考察指标,选择复合酶用量、p H、提取温度、提取时间为试验因素,采用4因子二次回归旋转组合设计(1/2实施)对甘蔗梢多酚提取工艺进行优化,确定复合酶法最佳工艺条件。【结果】建立甘蔗梢多酚提取量(Y)对复合酶用量(X1)、p H(X2)、提取温度(X3)及提取时间(X4)4个试验因素的二次正交回归模型:Y=4.51155+0.16908X1+0.20925X3-0.14736X32,该模型拟合性较好,其中复合酶用量和提取温度对甘蔗梢多酚提取量有极显著影响(P〈0.01)。复合酶法提取甘蔗梢多酚的最佳工艺条件为:在复合酶(果胶酶∶纤维素酶=2∶3)用量1.6%、p H 5.0、提取温度56℃的条件下提取30 min,甘蔗梢多酚提取量的模型预测值为4.86 mg/g,重复3次试验的验证值为4.71 mg/g;通过检验分析,显著性水平为0.01时,验证值与预测值一致。【结论】采用二次回归正交旋转组合设计优化得到的复合酶法提取工艺条件准确可靠,有效提高了甘蔗梢多酚提取效率,可在实际生产中推广应用。
Bibliography:45-1381/S
polyphenols; sugarcane top; compound enzymatic method; orthogonal rotation combination design; process optimization
ZHANG Si-yuan, HUANG Hui-ling, ZHOU Yong-sheng, LI Yu-ming, LU Hai-qin (College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China)
Objective】The compound enzymatic extraction process of polyphenols from sugarcane top were optimized by quadratic regression orthogonal rotation combination design, in order to provide references for comprehensive utilization of sugarcane top. 【Method】Using sugarcane top of Yuetang 159 as raw materials and extracted yield as index, based on single factor experiments, four factors(compound enzymatic dosage, p H, extraction temperature, extraction time) were selected as four experimental factors, and the four-factor quadratic regression orthogonal rotation combination design(1/2implemented) was used to optimize extraction process of polyphenols from sugarcane top, so as to ascertain optimal compound enzymatic extraction process co
ISSN:2095-1191
DOI:10.3969/j:issn.2095-1191.2016.03.459