不同pH溶液制备亚麻籽胶组成和功能特性的差异比较Difference Comparison of Composition and Functional Properties of Flaxseed Gum Prepared with Solutions at Different pH Values
冯孟熙,汪兰
摘要(Abstract):
以亚麻籽为原料,采用不同pH溶剂(pH 4,6.5,10)提取亚麻籽胶(FG),研究了提取过程中pH对FG的提取率、基本组成、单糖组成、分子量和功能特性的影响。结果表明,溶剂pH值对FG的提取率无显著影响,pH 6.5条件下提取的FG(FG-6.5)蛋白质含量最高,为10.09%。pH 10条件下提取的FG(FG-10)中性多糖比例更低,这可能导致其胶凝性更差。由于FG-10的分子量、粒径和电位都明显大于FG-4和FG-6.5,所以FG-10的特性黏度最大。pH 4条件下提取的FG(FG-4)粒径较小,且蛋白质含量较少,导致其乳化性和乳化稳定性优于FG-6.5和FG-10。溶液pH值对FG的起泡性和泡沫稳定性无显著影响。
关键词(KeyWords): 亚麻籽胶;pH;理化特性;功能特性
基金项目(Foundation): 湖北省农业科技创新中心2020年重大科技研发专项(2020-620-000-002-03)
作者(Author): 冯孟熙,汪兰
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