| 盐析法沉淀柠檬皮果胶简 |
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| 引用本文： | 刘义武,刘萍,王碧. 盐析法沉淀柠檬皮果胶简[J]. 内江师范学院学报, 2014, 0(2): 31-34 |
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| 作者姓名： | 刘义武 刘萍 王碧 |
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| 作者单位： | 内江师范学院化学化工学院//四川省高等学校“果类废弃物资源化”重点实验室,四川内江641199 |
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| 基金项目： | 四川省教育厅青年基金项目（11ZB024）,内江师范学院博士科研基金资助 |
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| 摘 要： | 以柠檬皮为原料,采用酸水解盐析法对柠檬果胶的沉淀工艺进行研究.通过单因素法分析沉淀果胶的硫酸锌用量、盐析pH、温度、时间等影响因素,然后正交实验法优化盐析法沉淀柠檬皮果胶的最佳工艺.实验结果表明：以上因素都有影响,其中沉淀剂量影响最大.最佳工艺条件为硫酸锌用量为干柠檬皮质量的0.3倍,盐析pH为5.0,盐析温度为45℃,盐析时间为120 min.通过上述条件得到较好性状的浅黄颗粒状产品,果胶提取率为18.72％.
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| 关 键 词： | 柠檬皮 硫酸锌 果胶 盐析法 |
Precipitation of Lemon Peel Pectin by Salting out Method |
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| LIU Yi-wu,LIU Ping,WANG Bi. Precipitation of Lemon Peel Pectin by Salting out Method[J]. Journal of Neijiang Teachers College, 2014, 0(2): 31-34 |
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| Authors: | LIU Yi-wu LIU Ping WANG Bi |
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| Affiliation: | (College of Chemistry and Chemical Engineering, Neijiang Normal University//College Key Laboratory of Fruit Waste Treatment and Resource Recycling of the Sichuan Province, Neijiang, Sichuan 641199, China) |
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| Abstract: | Lemon peel was used as a source of pectin. The precipitation process of lemon peel pectin with salting-out method was examined. The salting out technology was optimized by orthogonal experimentation on the basis of a series of sin- gle-factor experiments. The experimental results show that the factors could affect pectin precipitation to some degree, of which the amount of precipitant has the strongest influence. The optimum salting-out conditions were when： the amount of zinc sulfate used is 0.3 times the weight of the dry lemon peel, the pH value of the salting-out solution is 5.0, the temperature is set at 45℃, and the time of precipitation lasts 120 min. Granular pectin thus obtained is of good quality with a light yellow color and the extraction yield rate reaches 18.72%. |
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| Keywords: | lemon peel zinc sulfate pectin salting out |
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