Ultrahigh pressure-assisted enzymatic extraction maximizes the yield of longan pulp polysaccharides and their acetylcholinesterase inhibitory activity in vitro
文献类型: 外文期刊
第一作者: Bai, Yajuan
作者: Bai, Yajuan;Zhang, Mingwei;Bai, Yajuan;Liu, Lei;Zhang, Ruifen;Huang, Fei;Deng, Yuanyuan;Zhang, Mingwei
作者机构:
关键词: Longan pulp polysaccharides;Ultrahigh pressure-assisted enzymatic treatment;Acetylcholinesterase
期刊名称:INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES ( 影响因子:6.953; 五年影响因子:6.737 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: An extraction method employing ultrahigh pressure-assisted enzymatic treatment was developed and optimized by response surface methodology to increase the yield of longan pulp polysaccharides (LP-UE). A maximum polysaccharides yield of 8.55% was obtained under the optimal conditions of 407 MPa ultrahigh pressure" maintained for 6 min with an enzyme to pretreated material ratio of 1:100, an enzymolysis time of 1.7 h and a water to pretreated material ratio of 42 ml/g. Subsequently, the physicochemical properties and acetylcholinesterase (AChE) inhibitory activity of LP-UE were compared to those of longan pulp polysaccharides (LP) extracted by hot water (LP-H), ultrahigh pressure (LP-U) or enzymatic treatment (LP-E). Results demonstrated that the extraction yield, hexuronic acid content and AChE inhibitory activity of LP-UE was the highest among the four LP samples. LP-UE was primarily made up of arabinose, glucose, and galactose and was linked mainly by beta-type glycosidic linkage. The FTIR spectrum of LP-UE was very similar to those of LP-H, LP-U, and LP-E. In summary, ultrahigh pressure-assisted enzymatic treatment is a more efficient technique for extracting LP with considerable improvement of both yield and memory enhancement function. (C) 2016 Published by Elsevier B.V.
分类号: Q71
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