栅藻多糖的复合酶法提取工艺、化学组成及其抗氧化活性研究Study on Extraction Process of Complex Enzyme Method, Chemical Composition and Antioxidant Activity of Polysaccharide from Tetranephris brasiliensis
刘浩文,王川林,李佳莹,刘平怀
摘要(Abstract):
以栅藻粉为研究对象,研究栅藻多糖(TBP)的复合酶法提取工艺、化学组成及抗氧化活性。采用复合酶法提取TBP,考察酶解pH、复合酶(纤维素酶和木瓜蛋白酶按1∶1复配)添加量、酶解温度、酶解时间对TBP提取率的影响,并通过响应面模型优化TBP的提取工艺。对TBP的化学成分含量、单糖组成、官能团结构和体外抗氧化活性进行了分析研究。实验结果表明,TBP的复合酶法最佳提取工艺参数为酶解pH 6.1、复合酶添加量5.35%、酶解温度53.1℃和酶解时间84.2 min,在最佳提取条件下,TBP提取率可达(8.86±0.13)%;经化学组成分析,发现TBP的总糖含量为(57.59±1.06)%、蛋白质含量为(5.14±0.88)%、糖醛酸含量为(3.16±0.42)%,TBP具备典型的糖类化合物特征峰,含有吡喃糖和硫酸基团,其单糖共计10种类型,主要由葡萄糖、半乳糖、甘露糖组成;对TBP的抗氧化活性进行研究,发现TBP对ABTS自由基、超氧阴离子自由基和羟自由基具有较好的清除能力。该研究可对栅藻多糖的提取及其在食品工业中的应用提供相应参考。
关键词(KeyWords): 栅藻多糖;复合酶法;工艺优化;抗氧化
基金项目(Foundation): 国家重点研发计划项目(2021YFA0909604);; 海南省重点研发项目(ZDYF2024XDNY268)
作者(Author): 刘浩文,王川林,李佳莹,刘平怀
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