酸法提取紫茄皮花青素及其性质研究Study on the Extraction and Properties of Anthocyanins from Purple Eggplant Peel by Acid Method
王钊,岳晓禹,温双双,李玉江,张本尚,邹建
摘要(Abstract):
为综合利用紫茄皮资源,提升产品附加值,以预处理后的紫茄皮为起始原料,经低温真空烘干,粉碎制得紫茄皮粉。过40目筛,以冰乙酸为提取溶剂,分别考察了提取溶剂浓度、提取温度、料液比、提取时间等工艺条件变化对紫茄皮花青素提取效果的影响。在较优单因素条件的基础上,通过四因素三水平正交试验对提取工艺进行了优化,并考察了紫茄皮花青素的稳定性和抗氧化性。紫茄皮花青素的最优提取方案为冰乙酸溶液20%、提取温度60℃、料液比1∶30、提取时间60 min,经3次重复验证试验确认了这一最优工艺条件。金属离子中,Fe~(2+)离子及碱性条件均对紫茄皮花青素的稳定性产生明显的不利影响。紫茄皮花青素对羟基自由基和2,2-联苯基-1-苦基肼基(DPPH)自由基均具有较好的清除能力。紫茄皮花青素显示出了较好的稳定性和抗氧化能力,具有潜在的应用价值。
关键词(KeyWords): 紫茄皮;花青素;提取;正交试验;稳定性;抗氧化
基金项目(Foundation): 河南省重点研发与推广专项(科技攻关)(212102110192);; 河南牧业经济学院科研创新团队项目(2018KYTD17)
作者(Author): 王钊,岳晓禹,温双双,李玉江,张本尚,邹建
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