Citation
A. Alderson, . and Mehdi Magbool Ali, . and P. G., . and Zahid N., . (2011) Controlling postharvest anthracnose of banana by stimulating defence-related enzymes. [Proceedings Paper]
Abstract
Anthracnose a postharvest disease is the most destructive malady of tropical fruits and vegetables. Chitosan is reported to have antifungal effects against several fungi. However in this study the potential of chitosan combined with gum arabic as an edible coating was exploited. During in vitro studies chitosan plus gum arabic significantly reduced mycelial growth and spore germination of Colletotrichum musae a causal organism of anthracnose in banana. The results of in vivo experiments also revealed the effectiveness of chitosan plus gum arabic on banana and significantly reduced disease incidence. A concentration of 1.0 chitosan plus 10 gum arabic gave optimal control of anthracnose whereby no disease symptoms were observed even after 15 days of storage 25C; 60 RH. Chitosan plus gum arabic treatments also maintained significantly higher enzyme activities of total phenolics polyphenol oxidase PPO peroxidase POD phenylalanine ammonia lyase PAL compared to the untreated control. The results suggest a direct fungistatic effect of chitosan plus gum arabic against C. musae and also the stimulation of biochemical defence responses in banana fruit. It can be concluded that there is a high potential for the use of chitosan plus gum arabic as an alternative to chemical fungicides to control C. musae in banana.
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Abstract
Anthracnose a postharvest disease is the most destructive malady of tropical fruits and vegetables. Chitosan is reported to have antifungal effects against several fungi. However in this study the potential of chitosan combined with gum arabic as an edible coating was exploited. During in vitro studies chitosan plus gum arabic significantly reduced mycelial growth and spore germination of Colletotrichum musae a causal organism of anthracnose in banana. The results of in vivo experiments also revealed the effectiveness of chitosan plus gum arabic on banana and significantly reduced disease incidence. A concentration of 1.0 chitosan plus 10 gum arabic gave optimal control of anthracnose whereby no disease symptoms were observed even after 15 days of storage 25C; 60 RH. Chitosan plus gum arabic treatments also maintained significantly higher enzyme activities of total phenolics polyphenol oxidase PPO peroxidase POD phenylalanine ammonia lyase PAL compared to the untreated control. The results suggest a direct fungistatic effect of chitosan plus gum arabic against C. musae and also the stimulation of biochemical defence responses in banana fruit. It can be concluded that there is a high potential for the use of chitosan plus gum arabic as an alternative to chemical fungicides to control C. musae in banana.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. QR22 M3I61 2011 vol.2 Call Number |
| AGROVOC Term: | Colletotrichum |
| AGROVOC Term: | Musa |
| AGROVOC Term: | Bananas |
| AGROVOC Term: | Chitosan |
| AGROVOC Term: | Gum arabic |
| AGROVOC Term: | Edible coatings |
| AGROVOC Term: | Isolation |
| AGROVOC Term: | Extraction |
| AGROVOC Term: | Enzymes |
| AGROVOC Term: | Enzyme activity |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:15 |
| URI: | http://webagris.upm.edu.my/id/eprint/12979 |
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