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Effect of exogenous γ-aminobutyric acid treatment on the enzymatic browning of fresh-cut potato during storage

Author:
Gao, Haiyan, Zeng, Qing, Ren, Zhengnan, Li, Peizhong, Xu, Xinxing
Source:
Journal of food science and technology 2018 v.55 no.12 pp. 5035-5044
ISSN:
0022-1155
Subject:
acid treatment, catalase, catechol oxidase, enzymatic browning, enzyme activity, fresh-cut produce, gamma-aminobutyric acid, polyphenols, potatoes, reactive oxygen species, storage temperature, storage time, superoxide dismutase
Abstract:
The aim of this study was to evaluate the effect of γ-aminobutyric acid (GABA) treatment on the enzymatic browning of fresh-cut potatoes. The browning index and activities of browning and defense-related enzymes were analyzed after 0, 1, 2, 3, 4, 5, and 6 days of storage at 4 °C. The results showed that the treatment with 20 g/L GABA for 10 min significantly retarded the browning of fresh-cut potatoes. GABA inhibited the browning of fresh-cut potatoes by enhancing the activities of catalase and superoxide dismutase, and decreasing the activities of polyphenol oxidase and reactive oxygen species. The results suggest that GABA plays an important role in reducing the browning of fresh-cut potatoes. Hence, GABA treatment is a promising approach for reducing the browning and maintaining the quality of fresh-cut potatoes.
Agid:
6207854