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Does UV-C Irradiation Help in Suppression of Anthracnose and Maintain Quality of Stored Papaya Fruit?

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Title Does UV-C Irradiation Help in Suppression of Anthracnose and Maintain Quality of Stored Papaya Fruit?
 
Creator R, Vinod B
Asrey, Ram
Meena, Nirmal Kumar
M, Menaka
Ahamad, Sajeel
G, Avinash
 
Subject Colletotrichum
In vitro assay
Peel damage
Postharvest disease
Sensory quality
 
Description 1206-1213
Papaya, a climacteric fruit, undergoes rapid ripening and softening, resulting in a shortened shelf life, notable quality
deterioration and vulnerability to post-harvest diseases. UV-C irradiation is an environmentally conscious approach towards
sustainable postharvest fruit preservation. The in vitro and in vivo effectiveness of UV-C against anthracnose and its impact
on the quality of cold-stored papaya fruit were investigated. For the qualitative study, papaya fruits were subjected to UV-C
irradiation at varying doses (1.2, 1.6, 2.0 kJ∙m−2) and subsequently stored at 13 ± 1℃ for 20 days. Potent in vitro germicidal
effects on anthracnose were demonstrated by UV-C doses (> 2.0 kJ∙m−2) doses during 7 days of incubation. However,
complete prevention of in vivo disease incidence was not achieved, as UV-C light induced scalding and damage to the peel,
causing latex to ooze out and creating a conducive environment for fungal colonization. The peel damage following
UV-C exposure was attributed to the enhanced accumulation of MDA and H2O2 in the fruit peel. Conversely, lower doses
(1.2 kJ∙m−2) of UV-C irradiation were effective in reducing weight loss and respiration rate, retaining higher firmness, and
maintaining better phenols and antioxidant activity. However, a loss of glossiness and patchy discoloration on the fruit peel
were observed, which reduced its visual appeal. Severe stress caused by UV-C light, even at the lower dose, led to higher
oxidative damage, and thus least practical utility is found for UV-C in postharvest disease management and quality retention
of stored papaya fruit.
 
Date 2024-11-08T06:33:05Z
2024-11-08T06:33:05Z
2024-11
 
Type Article
 
Identifier 0022-4456 (Print); 0975-1084 (Online)
http://nopr.niscpr.res.in/handle/123456789/64839
https://doi.org/10.56042/jsir.v83i11.6365
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source JSIR Vol.83(11) [November 2024]