Synergistic effect of tea epigallocatechin gallate and tea flower-derived oligosaccharides on frozen storage cycles inducing oxidation and microstructural alterations of snakehead surimi proteins.

ABSTRACT: The synergistic effect of epigallocatechin gallate (EGCG) and tea flower oligosaccharides (TFO) was analyzed in snakehead during different 8 frozen storage cycles (FCY). Four different protein groups were prepared: C (no additives), K (conventional combination (4% sucrose+4% sorbitol)), EGCG-TFO (1%), and EGCG-TFO (3%). FCY accelerated the oxidation, especially C, where decreases in total sulfhydryl (54.68 to 34.70 mmol/kg) and Ca²⁺ATPase (0.518 to 0.304 mmol/g) were observed, as well as an increase in surface hydrophobicity. The K samples showed better stability against FCY-induced oxidative modifications than EGCG-TFO (1%). Meanwhile, EGCG-TFO (3%) restricted the FCY accelerated increase in carbonyls from 1.56 to 5.17 nmol/mg. Moreover, the Amide I and II regions were p

SUBMITTER: Walayat N 

PROVIDER: S-EPMC12828746 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature