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The Antifungal Effect of Gaseous Ozone on Lasiodiplodia theobromae Causing Stem-End Rot in ‘Keitt’ Mangoes

This study evaluated the antifungal activity of ozone (O(3)) against stem-end rot of mango fruit (cv. Keitt). Mango fruit were exposed to gaseous ozone (0.25 mg/L) for 24 or 36 h during cold storage, and control fruit were untreated. Experimental fruit were stored at 90% relative humidity and 10 ± 0...

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Autores principales: Bambalele, Nonjabulo L., Mditshwa, Asanda, Mbili, Nokwazi C., Tesfay, Samson Z., Magwaza, Lembe S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9818411/
https://www.ncbi.nlm.nih.gov/pubmed/36613410
http://dx.doi.org/10.3390/foods12010195
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author Bambalele, Nonjabulo L.
Mditshwa, Asanda
Mbili, Nokwazi C.
Tesfay, Samson Z.
Magwaza, Lembe S.
author_facet Bambalele, Nonjabulo L.
Mditshwa, Asanda
Mbili, Nokwazi C.
Tesfay, Samson Z.
Magwaza, Lembe S.
author_sort Bambalele, Nonjabulo L.
collection PubMed
description This study evaluated the antifungal activity of ozone (O(3)) against stem-end rot of mango fruit (cv. Keitt). Mango fruit were exposed to gaseous ozone (0.25 mg/L) for 24 or 36 h during cold storage, and control fruit were untreated. Experimental fruit were stored at 90% relative humidity and 10 ± 0.5 °C for three weeks and ripened at ambient temperature for one week. Ozone treatment (24 h) inhibited the mycelial growth of Lasiodiplodia theobromae by 60.35%. At day twenty-eight of storage, fruit treated with O(3) for 36 h had low mass loss (%) and high firmness compared to the untreated control fruit. Treating mango fruit with O(3) (36 h) maintained the color and concentration of total flavonoids throughout the storage time. At the end of storage, peroxidase activity under the O(3) 24 h treatment was significantly higher (0.91 U min(−1) g(−1) DM) compared to O(3) (36 h) and control, which, respectively, had 0.80 U min(−1) g(−1) DM and 0.78 U min(−1) g(−1) DM. Gaseous ozone for 24 h is recommended as a cost-effective treatment for controlling stem-end rot. These findings suggest that gaseous ozone effectively controlled stem-end rot and enhanced the postharvest quality of mango fruit.
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spelling pubmed-98184112023-01-07 The Antifungal Effect of Gaseous Ozone on Lasiodiplodia theobromae Causing Stem-End Rot in ‘Keitt’ Mangoes Bambalele, Nonjabulo L. Mditshwa, Asanda Mbili, Nokwazi C. Tesfay, Samson Z. Magwaza, Lembe S. Foods Communication This study evaluated the antifungal activity of ozone (O(3)) against stem-end rot of mango fruit (cv. Keitt). Mango fruit were exposed to gaseous ozone (0.25 mg/L) for 24 or 36 h during cold storage, and control fruit were untreated. Experimental fruit were stored at 90% relative humidity and 10 ± 0.5 °C for three weeks and ripened at ambient temperature for one week. Ozone treatment (24 h) inhibited the mycelial growth of Lasiodiplodia theobromae by 60.35%. At day twenty-eight of storage, fruit treated with O(3) for 36 h had low mass loss (%) and high firmness compared to the untreated control fruit. Treating mango fruit with O(3) (36 h) maintained the color and concentration of total flavonoids throughout the storage time. At the end of storage, peroxidase activity under the O(3) 24 h treatment was significantly higher (0.91 U min(−1) g(−1) DM) compared to O(3) (36 h) and control, which, respectively, had 0.80 U min(−1) g(−1) DM and 0.78 U min(−1) g(−1) DM. Gaseous ozone for 24 h is recommended as a cost-effective treatment for controlling stem-end rot. These findings suggest that gaseous ozone effectively controlled stem-end rot and enhanced the postharvest quality of mango fruit. MDPI 2023-01-01 /pmc/articles/PMC9818411/ /pubmed/36613410 http://dx.doi.org/10.3390/foods12010195 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Bambalele, Nonjabulo L.
Mditshwa, Asanda
Mbili, Nokwazi C.
Tesfay, Samson Z.
Magwaza, Lembe S.
The Antifungal Effect of Gaseous Ozone on Lasiodiplodia theobromae Causing Stem-End Rot in ‘Keitt’ Mangoes
title The Antifungal Effect of Gaseous Ozone on Lasiodiplodia theobromae Causing Stem-End Rot in ‘Keitt’ Mangoes
title_full The Antifungal Effect of Gaseous Ozone on Lasiodiplodia theobromae Causing Stem-End Rot in ‘Keitt’ Mangoes
title_fullStr The Antifungal Effect of Gaseous Ozone on Lasiodiplodia theobromae Causing Stem-End Rot in ‘Keitt’ Mangoes
title_full_unstemmed The Antifungal Effect of Gaseous Ozone on Lasiodiplodia theobromae Causing Stem-End Rot in ‘Keitt’ Mangoes
title_short The Antifungal Effect of Gaseous Ozone on Lasiodiplodia theobromae Causing Stem-End Rot in ‘Keitt’ Mangoes
title_sort antifungal effect of gaseous ozone on lasiodiplodia theobromae causing stem-end rot in ‘keitt’ mangoes
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9818411/
https://www.ncbi.nlm.nih.gov/pubmed/36613410
http://dx.doi.org/10.3390/foods12010195
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