Open AccessPolyethylene glycol‐based ultrasonic‐assisted enzymatic extraction, characterization, and antioxidant activity in vitro and in vivo of polysaccharides from Lonicerae japonica leaves
Author(s) -
Wu Wei,
Huang Tingrong,
Xiang Fu
Publication year - 2019
Publication title -
food science and nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 27
ISSN - 2048-7177
DOI - 10.1002/fsn3.1186
Subject(s) - antioxidant , superoxide dismutase , polyethylene glycol , chemistry , malondialdehyde , polysaccharide , peg ratio , extraction (chemistry) , monosaccharide , in vivo , glutathione peroxidase , catalase , biochemistry , chromatography , biology , microbiology and biotechnology , finance , economics
In this paper, polyethylene glycol (PEG)‐based ultrasonic‐assisted enzymatic extraction (UAEE) was employed in polysaccharides extraction from Lonicerae japonica leaves (LJLP). The optimal extraction conditions (extraction time of 33 min, PEG concentration of 30%, and ultrasonic power of 191 W) were obtained by Box–Behnken design (BBD). Under this condition, the LJLP yield was 14.76%. Furthermore, LJLP was identified as a typical heteropolysaccharide considering the main constitutive monosaccharides include galactose (32.3%), glucose (20.9%), and ribose (15.2%). Moreover, LJLP exhibited high total reducing power and considerable scavenging activities on superoxide radicals, in a concentration‐dependent manner in vitro. In addition, antioxidant analysis in vivo revealed that for the LJLP‐treated mice, the superoxide dismutase (SOD), glutathione peroxidase (GSH‐Px), catalase (CAT) activities, and total antioxidant capacity (TAOC) were significantly increased, while the level of malondialdehyde (MDA) was decreased in both serum and liver.