碱提西番莲叶多糖的分离、鉴定及生物活性
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(桂林理工大学化学与生物工程学院,广西 桂林 541006)

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李霞,女,桂林理工大学教授,博士。

通讯作者:

关媛(1989—),女,桂林理工大学讲师,博士。E-mail:2019017@glut.edu.cn

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国家自然科学基金地区科学基金项目(编号:3186040051);广西高校中青年教师科研基础能力提升项目(编号:2020KY06018);科研启动基金(编号:GUTQDJJ2019017)


Isolation, identification and its biological activity analysis of the polysaccharide in Passiflora edulis Sims leaves from alkali extracts
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(College of Chemistry and Bioengineering, Guilin University of Science and Technology, Guilin, Guangxi 541006, China)

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    摘要:

    以热水提取后的西番莲叶残渣为原料,利用NaOH碱溶液提取多糖(APEL),通过离子交换层析进行分离,测定多糖的理化性质,同时采用红外光谱、高效液相色谱、凝胶渗透色谱法对多糖进行分析,并研究了西番莲叶中多糖组分的体外降血糖及抗凝血活性。结果表明:APEL经DEAE-52纤维素离子交换层析法分离得到3种组分:APEL-1、APEL-2、APEL-3,APEL及其分离组分均具有多糖的典型特征峰,主要由阿拉伯糖、葡萄糖、半乳糖、木糖、鼠李糖、葡萄糖醛酸组成,APEL、APEL-1、APEL-2和APEL-3的分子量分别为4.277×106,4.276×106,4.203×106,4.111×106 Da。APEL及其组分对α-淀粉酶和α-葡萄糖苷酶均有显著抑制作用,并能显著延长活化部分凝血活酶时间、凝血酶原时间和凝血酶时间,具有明显的体外降血糖和抗凝血活性。

    Abstract:

    The residue of Passiflora edulis Sims leaves after hot water extraction was used as material. Polysaccharide was extracted from the residue by using NaOH alkaline solution, followed by separation of ion-exchange chromatography. The physicochemical properties of polysaccharide were determined and analyzed by IR, HPLC and gel permeation chromatography, and then its hypoglycemic and anticoagulant were studied. The results showed that APEL was separated by DEAE-52 cellulose ion-exchange chromatography to obtain the APEL-1, APEL-2, APEL-3, the APEL and its separated components all have typical characteristic peaks of polysaccharides, mainly composed of arabinose, glucose, galactose, xylose, rhamnose, glucuronic acid. The molecular weights of APEL, APEL-1, APEL-2 and APEL-3 were 4.277×106, 4.276×106, 4.203×106, 4.111×106 Da. The APEL and its components could significantly inhibit α-amylase and α-glucosidase, and prolong the activated partial thromboplastin time, prothrombin time and thrombin time, showing obvious hypoglycemic and anticoagulant activities in vitro.

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李霞,刘承鑫,黄艳,等.碱提西番莲叶多糖的分离、鉴定及生物活性[J].食品与机械,2021,37(3):137-143.
LIXia, LIUChengxin, HUANGYan, et al. Isolation, identification and its biological activity analysis of the polysaccharide in Passiflora edulis Sims leaves from alkali extracts[J]. Food & Machinery,2021,37(3):137-143.

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  • 收稿日期:2020-11-27
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  • 在线发布日期: 2023-02-15
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