双歧杆菌
化学
DPPH
阿布茨
阿拉伯糖
半乳糖
木糖
抗氧化剂
短双歧杆菌
聚糖
单糖
生物化学
鼠李糖
超氧化物
大肠杆菌
抗菌剂
多糖
糖醛酸
长双歧杆菌
食品科学
发酵
双歧杆菌
有机化学
乳酸菌
酶
糖蛋白
基因
作者
Felina Tan,Yuanshan Yu,Yujuan Xu,Jijun Wu,Gengsheng Xiao,Teng‐Gen Hu
摘要
Summary In this study, three litchi glycans (Lzp1–Lzp3) with molecular weights ( M w ) of 2.25 × 10 6 Da, 6.00 × 10 3 Da and 3.24 × 10 2 Da were purified, and their structural characteristics, biological activities and structure–activity relationships were investigated. The results showed that Lzp1–Lzp3 had similar inhibitory effects on Escherichia coli and Staphylococcus aureus , as evidenced by the fact that there were no significant correlations between the M w , active groups, monosaccharide compositions of Lzp1–Lzp3 and their antimicrobial activities. Lzp1 consisted of more mannose, galactose and arabinose, and less ribose and xylose, thus leading to its higher antioxidant activities of DPPH, ABTS, hydroxyl and superoxide radical scavenging and ferric‐ion reducing with the values of 78.0%, 99.0%, 90.2%, 1.08 and 3.93 respectively. Lzp2 contained more sulphonic acid and uronic acid, and the least glucose possessed the best effect on the promotion of exopolysaccharide production (24.77 mg/mL) by Weissella confusa , and the proliferation of Weissella confusa , Lacticaseibacillus rhamnosus , Bifidobacterium bifidum and Bifidobacterium breve with the OD 600 ranging from 0.278–1.082. This study can provide a reference for the preparation of litchi glycans possessed specific biological activity.
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