| 正交实验法优选绿茶绿色素的超声波提取工艺 |
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| 引用本文： | 张吉祥.正交实验法优选绿茶绿色素的超声波提取工艺[J].食品科技,2011(1):192-196. |
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| 作者姓名： | 张吉祥 |
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| 作者单位： | 廊坊师范学院化材学院; |
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| 基金项目： | 河北省教育厅基金项目(2007317); 廊坊师范学院科学基金项目(LSZB200801) |
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| 摘 要： | 采用正交实验法,利用超声提取技术,优选由绿茶中提取绿色素的最佳工艺条件。以绿色素的乙醇浸提液在可见光区665nm处的吸光度为考察指标,应用正交实验法对提取过程中浸提温度(A)、浸提时间(B)、超声波功率(C)、乙醇浓度(D)及料液比(E)5个因素进行优选研究。结果表明,乙醇浓度与浸提温度对茶叶中绿色素提取率的影响较为显著,最佳工艺条件为乙醇浓度85%、浸提温度60℃、料液比1:16、提取时间40min、超声波功率350W。在此优化条件下绿茶中绿色素提取率达到38.80%,为先前文献报导的1.7倍。
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| 关 键 词： | 正交实验法 绿茶 绿色素 超声波 提取 |
Optimum extraction of green pigment from green tea by ultrasonic-wave and orthogonal test |
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| ZHANG Ji-xiang.Optimum extraction of green pigment from green tea by ultrasonic-wave and orthogonal test[J].Food Science and Technology,2011(1):192-196. |
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| Authors: | ZHANG Ji-xiang |
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| Affiliation: | ZHANG Ji-xiang (Faculty of Chemistry and Material Science,Langfang Teachers’ College,Langfang 65000) |
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| Abstract: | The optimum technology for ultrasonic-assisted extraction of green pigment from green tea was investigated in this paper.The absorbency of green pigment solution at the wavelength 665 nm as research index of the extraction yield was measured by spectrometry.The orthogonal test was conducted to evaluate the effects of five factors the extraction temperature(A),extraction time(B),ultrasonic power(C),ethanol concentration(D),material/solvent ratio(E) on the extraction yield of Tea Creen pigment(TGP).The result... |
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| Keywords: | orthogonal test green tea green pigment ultrasonic wave extraction |
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