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Effect of Acidic Electrolyzed Oxidizing Water Treatments on the Control of Postharvest Disease and Pathogenesis Related Protein Production in Pineapple Fruit

Kanda Whangchai 1,2, Sirakarn Khayankarn 3, and Jamnong Uthaibutra 3
1. Postharvest Technology Innovation Center, Chiang Mai University, Chiang Mai 50200, Thailand
2. Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
3. Chiang Rai Horticultural Research Center, Department of Agriculture, Chiang Rai 57000, Thailand
Abstract—This study evaluated the effectiveness of acidic electrolyzed oxidizing water (AEW), to control Fusarium sp. which causes postharvest disease of de-crowned pineapple cv. Phu Lae. The growth inhibition of Fusarium sp. in vitro was observed with AEW with avarious concentration with free chlorine at 100, 200 and 300 ppm. AEW treatment of 300 ppm was the most effective to suppress the growth of Fusarium Additionally, the AEW treatments enhanced the pathogenesis realated protein (PRs) β-1, 3-glucanase (EC 3.2.1.6) and chitinase (EC 3.2.1.14) activities after inoculation, which play important roles in plant defense responses. The increased activities of the enzyme were probable because the defense response to wide aray to stress including wounding and inoculating with Fusarium and treatment of AEW. Application of AEW enhances resistance of the pineapple fruit to fungal pathogens and has no effect on fruit’s quality.

Index Terms—crown rot, electrolyzed oxidizing water, β-1, 3-glucanase, chitinase, Ananus comosus cv. Phu Lae

Cite:  Kanda Whangchai, Sirakarn Khayankarn, and Jamnong Uthaibutra, "Effect of Acidic Electrolyzed Oxidizing Water Treatments on the Control of Postharvest Disease and Pathogenesis Related Protein Production in Pineapple Fruit," Journal of Advanced Agricultural Technologies, Vol. 4, No. 3, pp. 240-244, September 2017. Doi: 10.18178/joaat.4.3.240-244
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