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Preharvest calcium chloride sprays affect ripening of Eksotika II’papaya fruits during cold storage


Madani, Babak and Tengku Muda Mohamed, Mahmud and Watkins, Christopher B. and Kadir, Jugah and Awang, Yahya and Shojaei, Taha Roodbar (2014) Preharvest calcium chloride sprays affect ripening of Eksotika II’papaya fruits during cold storage. Scientia Horticulturae, 171. pp. 6-13. ISSN 0304-4238


The effects of preharvest application of calcium chloride on ripening, activity patterns of pectin modifying enzymes and overall quality of papaya (Carica papaya L. cv. ‘Eksotika II’) fruits have been investigated. Foliar sprays of 0, 0.5%, 1%, 1.5% and 2% (w/v) calcium chloride were applied six times during the growing season. After harvest, fruits were stored at 12 °C for up to three weeks. Higher calcium concentrations in the sprays coincided with increasing calcium concentrations in peel and pulp tissues, higher firmness and titratable acidity, and reduced respiration rate, ethylene production and soluble solids concentrations, compared with those of the untreated control fruits. The overall quality of fruits treated with calcium was greater than the control fruits. Also, fruits sprayed with calcium had decreased activities of polygalacturonase (PG) and pectin methyl esterase (PME) during storage. Microscopic results confirmed that the middle lamallae of cell walls was more intact in calcium chloride-treated fruits.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Institute of Advanced Technology
DOI Number: https://doi.org/10.1016/j.scienta.2014.03.032
Publisher: Elsevier
Keywords: Papaya; Preharvest spray; Calcium chloride; Physicochemical
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 25 Dec 2015 09:30
Last Modified: 25 Dec 2015 09:30
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.scienta.2014.03.032
URI: http://psasir.upm.edu.my/id/eprint/35002
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