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Potential of chitosan coating in delaying the postharvest anthracnose (Colletotrichum gloeosporioides Penz.) of Eksotika II papaya


Citation

Ali, Asgar and Tengku Muda Mohamed, Mahmud and Sijam, Kamaruzaman and Siddiqui, Yasmeen (2010) Potential of chitosan coating in delaying the postharvest anthracnose (Colletotrichum gloeosporioides Penz.) of Eksotika II papaya. International Journal of Food Science and Technology, 45 (10). pp. 2134-2140. ISSN 1365-2621

Abstract / Synopsis

The in vitro and in vivo fungicidal activity of chitosan was studied against Colletotrichum gloeosporioides, the causal agent of anthracnose in papaya fruits. Chitosan at 1.5% and 2.0% concentrations showed a fungistatic effect with 90–100% inhibition (significant at P ≤ 0.05) of the fungal mycelial growth. Changes in the conidial morphology were also observed with the higher chitosan concentrations after 7-h incubation. In vivo studies showed that 1.5% and 2.0% chitosan coatings on papaya not only controlled the fruit decay but also delayed the onset of disease symptoms by 3–4 weeks during 5 weeks storage at 12 ± 1°C and slowed down the subsequent disease development. However, when leaving the fruits to ripen at ambient temperature (28 ± 2°C), 2.0% chitosan was less effective than 1.5% in controlling the disease development. Chitosan coatings also delayed the ripening process by maintaining the firmness levels, soluble solids concentration and titratable acidity values during and after storage.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
DOI Number: https://doi.org/10.1111/j.1365-2621.2010.02389.x
Publisher: Wiley Interscience
Keywords: Anthracnose; Chitosan; Disease development; Papaya
Depositing User: Norhazura Hamzah
Date Deposited: 31 Mar 2011 01:00
Last Modified: 09 Mar 2016 04:29
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1111/j.1365-2621.2010.02389.x
URI: http://psasir.upm.edu.my/id/eprint/11366
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