当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Effect of various extraction methods on the structure of polyphenolic-polysaccharide conjugates from Fragaria vesca L. leaf.

Effect of various extraction methods on the structure of polyphenolic-polysaccharide conjugates from Fragaria vesca L. leaf.

Abstract：

:The purpose of this study was to compare the application of several extraction methods, including cold extraction (CAE), hot extraction (HAE), ultrasonic-assisted extraction (UAE), and microwave-assisted extraction (MAE), all carried out in 0.1 M NaOH, under their respective best parameters, for obtaining products from leaf of Fragaria vesca L. The extracts with the highest anticoagulant activity were purified by multi-step extraction procedure and separated by gel permeation chromatography, giving rise to the macromolecular complexes. They were subsequently structurally characterized using colorimetric methods, FT-IR, GC-MS, and NMR (1H and 1H/13C HSQC), as polyphenolic-polysaccharide conjugates with the anticoagulant activity. The polysaccharide parts of the conjugates obtained by different extraction procedures were found to vary significantly. The most selective in their activity were the glycoconjugates extracted in UAE and MAE processes, i.e. arabinogalactan and pectin-like conjugates, respectively. In terms of their anticoagulant activity all of them were non-direct factor Xa inhibitors mediated by antithrombin.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Pawlaczyk-Graja I,Balicki S,Wilk KA

doi

10.1016/j.ijbiomac.2019.03.013

subject

Has Abstract

pub_date

2019-06-01 00:00:00

pages

664-674

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(18)36744-8

journal_volume

130

pub_type

杂志文章

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