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由辣椒粉浸出液萃取辣椒碱
Authors
刘会洲
常志东
邓雄
雷超
Publication date
1 January 2008
Publisher
Abstract
以市售干辣椒为原料、95%乙醇为浸出剂,实验研究了溶剂萃取法由辣椒粉浸出液中萃取纯化辣椒碱的工艺条件.在模拟体系和实际体系中均以正己烷和乙酸丁酯为萃取剂,考察了pH值和有机相/水相体积比对辣椒碱收率的影响.结果表明酸化萃取步骤为工艺控制步骤.模拟体系中pH值为11、体积比为7:1时乙酸丁酯对辣椒碱的萃取收率均大于90%,表明以乙酸丁酯为萃取剂,可以提高辣椒碱的浓缩度.实际体系萃取结果与模拟体系趋同,但约20%的辣椒碱不能被萃取.实际体系优化的工艺条件为辣椒粉用量50g,250mL95%乙醇2次浸出,辣椒碱收率为97.0%;浸出液浓缩为浸膏并溶解于NaOH溶液中,在pH值13,O/W体积比1:1时萃取,再用盐酸调节水相pH<11,O/W体积比为1:5时用乙酸丁酯萃取,辣椒碱的收率为浸出量的80%左右
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/43972
Last time updated on 11/04/2021
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/36172
Last time updated on 05/12/2019
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/3131
Last time updated on 09/11/2016