Moisture loss is the major cause of firmness change during postharvest storage of blueberry |
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| Institution: | 1. Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Casilla 54-D, Temuco, Chile;2. Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Casilla 54-D, Temuco, Chile;3. Departamento de Horticultura, Universidad de Talca, Casilla 747, Talca, Chile;4. Centro de Investigación y Transferencia en Riego y Agroclimatología (CITRA) and Research program on Adaptation of Agriculture to Climate Change (PIEI A2C2), Universidad de Talca, Casilla 747, Talca, Chile;5. Department of Horticulture, A338 Plant and Soil Science Bldg., Michigan State University, East Lansing, MI 48824, United States;6. Instituto de Investigaciones Agropecuarias, Centro Regional de Investigaciones Carillanca, Casilla 58-D, Temuco, Chile;1. Plant Breeding and Phenomic Center, Faculty of Agricultural Sciences, Universidad de Talca, Talca, Chile, P.O. Box 747, Talca, Chile;2. Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile;3. Unitat de Postcollita-XaRTA, Centre AGROTÈCNIO, Universitat de Lleida, Alcalde Rovira Roure 191, 25198 Lleida, Spain;1. SJTU-Bor Luh Food Safety Center, Department of Food Science and Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China;2. Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331, USA;3. Qingpu Modern Agricultural Park, Shanghai 200240, China;1. Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Food Science Institute, Zhejiang Academy of Agricultural Science, Hangzhou 310021, China;2. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China;3. College of Life and Environment Sciences, Huangshan University, Huangshan 245041, China;4. Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture, Nanjing 210014, China;1. Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China;2. Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture, Liuying 100, Nanjing 210014, China;3. College of Life and Environmental Science, Wenzhou University, Wenzhou 325027, China |
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| Abstract: | Blueberry softening is known to be influenced by cell wall modifications accompanying ripening but these changes appear to be largely complete by the time of harvest. In this study postharvest storage conditions were controlled so only the extent of water loss varied between treatments. A linear relationship between weight loss and loss of firmness (as assessed by a non-destructive compression test) was demonstrated. This relationship did not hold at very low weight loss, where instead, firming of blueberries during storage was found. Magnetic resonance imaging of berries confirmed significant shrinkage and loss of water in berries which had high weight loss, compared with more subtle effects on sub-epidermal water content in berries with very low weight loss. Treatments which restrict blueberry water loss to below 8% are likely to be beneficial in retaining acceptable berry firmness for up to three weeks’ storage. |
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