Effect of sustained deficit irrigation on physicochemical properties,bioactive compounds and postharvest life of pomegranate fruit (cv. ‘Mollar de Elche’) |
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| Institution: | 1. Postharvest and Refrigeration Group, Department of Food Engineering, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203 Cartagena, Murcia, Spain;2. Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Campus Muralla del Mar, 30202 Cartagena, Murcia, Spain;3. Irrigation Department, Centro de Edafología y Biología Aplicada del Segura (CSIC), P.O. Box 164, E-30100 Espinardo, Murcia, Spain;1. Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran;2. Water Engineering Department, School of Agriculture, Shiraz University, Shiraz, Iran;3. Improvement Plant and Seed Department, Yazd Agricultural and Natural Resources Research and Education Center Research, AREEO, Yazd, Iran;4. Department of Food Technology, University Miguel Hernández, Orihuela, Alicante, Spain;1. Water engineering, Shiraz University, Iran;2. Water engineering, Fasa University , Iran;1. Department of Horticultural Science, Faculty of Agriculture, University of Maragheh, Maragheh, Iran;2. Department of Agriculture, Goldaru Pharmaceutical Company, Isfahan, Iran;3. Department of Horticulture, College of Agricultural Science and Engineering, Campus of Agriculture and Natural Resources, University of Tehran, Karaj, Iran;4. Department of Plant Nutrition, Aula Dei Experimental Station (CSIC), Zaragoza, Spain;5. Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia;6. Crop and Horticultural Science Research Department, Kermanshah Agricultural and Natural Resources Research and Education Center, AREEO, Kermanshah, Iran;7. Botany Department, Faculty of Science, Aswan University, Aswan 81528, Egypt;8. Faculty of Science, Galala University, Suze, Galala City 43511, Egypt;1. Postharvest and Refrigeration Group, Department of Agronomical Engineering, Universidad Politécnica de Cartagena, Cartagena, Murcia, 30203, Spain;2. Plant Production Group, Department of Agronomical Engineering, Universidad Politécnica de Cartagena, Cartagena, Murcia, 30203, Spain;3. Department of Systems and Electronics, Universidad Politécnica de Cartagena, Cartagena, Murcia, 30203, Spain |
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| Abstract: | In this study, the influence of sustained deficit irrigation (SDI; 32% of reference evapotranspiration (ET0)) on physicochemical and sensory quality and bioactive compounds of pomegranates stored for 30, 60 and 90 days in air at 5 °C + 4 days at 15 °C, at each storage period, was studied and compared to a control (100% ET0). Fruit from SDI had higher peel redness and greater firmness, soluble solids contents, vitamin C (27%), phloretin (98%) and protocatechuic acid (10%) levels, and total antioxidant capacity (TAC) (46%) than the control. Cold storage and shelf-life did not induce significant changes in soluble solids, pH, titratable acidity, and chroma and Hue. SDI fruit had retarded development of chilling injury (CI) symptoms, which appeared after 60 days of storage in comparison to 30 days in the controls. Anthocyanins, catechin, phloretin and protocatechuic, caffeic, p-coumaric and caffeic acids contents had greater increases in SDI fruit than in controls throughout the postharvest life. TAC was significantly (P < 0.05) correlated to anthocyanins, gallic acid and total vitamin C contents. Generally, after long term storage, the fruit grown under SDI showed higher sensory and nutritional quality, more health attributes and a longer shelf-life (up to 90 days at 5 °C + 4 at 15 °C) than fruit irrigated at 100% ET0. |
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| Keywords: | Bioactive compounds Chilling injury Phenolics Punicalagins Anthocyanins |
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