Variation in antioxidant metabolites and enzymes of 'red fuji' apple pulp and peel during cold storage

Li Li, Xihong Li*, Zhaojun Ban, Yunhong Jiang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Antioxidants are usually considered with regard to plant defense mechanisms due to the oxidative stress or their importance for human health or both. A comprehensive study in the present research was made to determine the variation in contents of antioxidants and their metabolites (such as ascorbate and glutathione) and enzymes activities of Red Fuji apple pulp and peel tissue during cold storage (0 ± 1°C). Results showed that the majority of antioxidant metabolites were maintained in the reduced state, reduced ascorbate and glutathione, mainly localized in apple peel tissue. Strong or very strong correlations between hydrogen peroxide content and superoxide dismutase activity (r = 0.822 and 0.959), reduced/oxidized ascorbate ratio and monodehydroascorbate reductase activity (r = 0.966 and 0.984) as well as reduced/oxidized glutathione ratio and glutathione reductase activity (r = 0.969 and 0.924) were discovered. These results highlight that apple peel tissue could be selected to explore antioxidant mechanism and defense metabolism of apple fruit.

Original languageEnglish
Pages (from-to)1067-1080
Number of pages15
JournalInternational Journal of Food Properties
Volume17
Issue number5
Early online date14 Jan 2014
DOIs
Publication statusPublished - 28 May 2014
Externally publishedYes

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