Physicochemical characteristics and antioxidant activities of non-starch polysaccharides from different kiwifruits.

Abstract:

:Non-starch polysaccharides are considered the main bioactive ingredients in kiwifruits. In order to well understand the chemical structures and antioxidant activities of non-starch polysaccharides from different varieties of kiwifruits (KPSs), the physicochemical characteristics and antioxidant activities of KPSs extracted by hot water extraction from Actinidia deliciosa cv. Hayward, A. chinensis cv. Hort16A, A. chinensis cv. Jinshi, A. chinensis cv. Hongshi, A. polygama, A. macrosperma, and A. arguta were investigated and compared. Results showed that extraction yields and contents of total uronic acids in KPSs ranged from 2.60% to 5.52%, and from 35.07% to 42.20%, respectively. Molecular weights and intrinsic viscosities of KPSs ranged from 1.405 × 105 to 1.620 × 106 Da, and from 0.34 dL/g to 1.24 dL/g, respectively. The dominant constituent monosaccharides of KPSs were galacturonic acid, arabinose, and galactose. Furthermore, KPSs from kiwifruits, especially KPSs extracted from A. arguta, exerted remarkable 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid and nitric oxide radical scavenging activities, which might be partially attributed to their high content of unmethylated galacturonic acids. Results are helpful for better understanding of the chemical structures and antioxidant activities of KPSs, and KPSs had potential to be further explored as natural antioxidants for the application in the functional food industry.

journal_name

Int J Biol Macromol

authors

Wu DT,Liu W,Han QH,Du G,Li HY,Yuan Q,Fu Y,Zhao L,Zhang Q,Li SQ,Qin W

doi

10.1016/j.ijbiomac.2019.06.142

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

891-900

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(19)33527-5

journal_volume

136

pub_type

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