Bruise susceptibility of banana peel in relation to genotype and post-climacteric storage conditions |
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| Institution: | 1. CIRAD, UMR QUALISUD, PRAM, BP 214, F-97285 Lamentin Cedex 2, Martinique;2. CIRAD, UMR Amélioration génétique d’espèces à multiplication végétative, F-97130 Capesterre Belle-Eau, Guadeloupe;3. INRA, UMR 1270 QUALITROP, Domaine de Duclos, F-97170 Petit-Bourg, Guadeloupe;1. Bioversity International, Plot 106, Katalima Road, P.O. Box 24384, Kampala, Uganda;2. Bioversity International, c/o International Livestock Research Institute, P.O. Box 5689, Addis Ababa, Ethiopia;3. Bioversity International, Parc Scientifique Agropolis II, 34397 Montpellier Cedex 5, France;1. CIRAD, UMR QUALISUD, 73 rue Jean François Breton, F-34398 Montpellier Cedex 5, France;2. CIRAD, UPR GECO, Campus agro-environnemental Caraïbe, Quartier Petit Morne, F-97285 Lamentin, Martinique, France;3. Institut Technique Tropical, F-97130 Capesterre-Belle-Eau, Guadeloupe, France;4. CIRAD, UMR AGAP, Station Neufchateau, Sainte Marie, F-97130 Capesterre-Belle-Eau, Guadeloupe, France;1. College of Grain Science and Technology, Shenyang Normal University, Shenyang, Liaoning, 110034, People’s Republic of China;2. Experimental Teaching Center, Shenyang Normal University, Shenyang, Liaoning, 110034, People’s Republic of China;1. Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Department of Food Science, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa;2. Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Department of Horticultural Science, Faculty of AgriSciences, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa |
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| Abstract: | The aim of this study was to understand the genotypic factors and post-climacteric storage conditions that affect bruise susceptibility of banana peel. Putative physicochemical indicators of bruise susceptibility, including peel electrolyte leakage (PEL), total polyphenolic content, hardness, water content, and peel thickness, were investigated. Bruise susceptibility is the lowest impact energy needed to produce visible bruising by an object dropped on post-climacteric banana fruit from a pre-determined height, converted into impact energy (20–200 mJ with a 20 mJ increment). The bananas were stored either at 18 °C throughout ripening or at 13 °C between the 2nd and 6th day after ethylene induction. Five cultivars with contrasting susceptibility to impact bruises were used. Neither Grande Naine nor hybrid Flhorban925 bruised at the maximum impact energy (200 mJ) during ripening whatever the storage conditions. A gradient in bruise susceptibility was observed among the other cultivars: French Corne > Fougamou > hybrid Flhorban916. Bruise susceptibility increased during ripening and was higher in bananas stored at 18 °C. The lower ripening temperature resulted in a two-day delay to fruit maturity as well as in bruise susceptibility. Bruise susceptibility was positively correlated with PEL (R = 0.78) and to a lesser extent negatively correlated with hardness (R = ?0.45), and was not correlated with polyphenolic content. In conclusion, membrane permeability provides the first clue to understanding bruise susceptibility. |
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| Keywords: | Impact bruising Cultivar Electrolyte leakage Polyphenol Cold storage |
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