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- Title
Chitosan Coating: A Postharvest Treatment to Delay Oxidative Stress in Loquat Fruits during Cold Storage.
- Authors
Adiletta, Giuseppina; Pasquariello, Maria Silvia; Zampella, Luigi; Mastrobuoni, Francesco; Scortichini, Marco; Petriccione, Milena
- Abstract
Loquat is a non-climacteric fruit consumed fresh for its essential nutrients and phytochemical compounds. In this study, the effects of chitosan coating (1% w/v) on changes in the enzymatic antioxidant and membrane damage in three loquat selections (CREAFRC-S18; CREAFRC-S35 and CREAFRC-S36) and three loquat cultivars (Golden Nugget, Algerie and Nespolone rosso di Trabia) stored at 7 °C over 21 days were evaluated. Chitosan treatment enhanced the activities of superoxide dismutase, catalase and ascorbate peroxidase. Moreover, this treatment inhibited polyphenol oxidase and guaiacol peroxidase activities, extending the storage life of loquat. Chitosan also preserved membrane integrity by inhibiting lipoxygenase activity and malondialdehyde accumulation. Principal component analysis provided a global view of the responses of both loquat selections and cultivars to the postharvest chitosan coating and storage temperature. These findings suggest that chitosan treatment could be a valid tool for improving the activity of antioxidant enzymes, preserving the enzymatic browning of loquat fruits.
- Subjects
CHITOSAN; LOQUAT; ANTIOXIDANTS; ENZYMES; PRINCIPAL components analysis; OXIDATIVE stress
- Publication
Agronomy, 2018, Vol 8, Issue 4, p54
- ISSN
2073-4395
- Publication type
Article
- DOI
10.3390/agronomy8040054