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

Autor: Wu DT; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China. Electronic address: DT_Wu@sicau.edu.cn., Liu W; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China., Han QH; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China., Du G; Sichuan Provincial Institute for Food and Drug Control, Chengdu, Sichuan, China., Li HY; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China., Yuan Q; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China., Fu Y; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China., Zhao L; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China., Zhang Q; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China., Li SQ; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China., Qin W; Institute of Food Processing and Safety, College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China. Electronic address: Qinwen@sicau.edu.cn.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2019 Sep 01; Vol. 136, pp. 891-900. Date of Electronic Publication: 2019 Jun 20.
DOI: 10.1016/j.ijbiomac.2019.06.142
Abstrakt: 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 × 10 5 to 1.620 × 10 6  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.
(Copyright © 2019 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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