Changes during the ripening of the very late season Spanish peach cultivar Calanda: Feasibility of using CIELAB coordinates as maturity indices |
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| Institution: | 1. College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China;2. Institute of Horticulture, Jiangsu Academy of Agricultural Sciences, Jiangsu 210095, PR China;1. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China;2. Sericultural and Agri‐Food Research Institute, Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Food, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China;3. Department of Bioengineering, Jinan University, Guangzhou 510632, PR China;1. Especialidad de Fruticultura, Campus Montecillo, Colegio de Postgraduados, km. 36.5 Carretera México-Texcoco, 56230 Montecillo, Mexico;2. Departamento de Ingeniería Agroindustrial, Universidad Autónoma Chapingo, km. 38.5 Carretera México-Texcoco, 56230 Texcoco, Mexico;3. Departamento de Ingeniería Mecánica Agrícola, Universidad Autónoma Chapingo, km. 38.5 Carretera México-Texcoco, 56230 Texcoco, Mexico;4. Escuela Superior de Ingeniería Mecánica y Eléctrica, Instituto Politécnico Nacional, Edificio 5, 3er Piso Unidad Zacatenco, Colonia Lindavista, 07738 Distrito Federal, Mexico;5. Departamento de Preparatoria Agrícola, Universidad Autónoma Chapingo, km. 38.5 Carretera México-Texcoco, 56230 Texcoco, Mexico;1. IRTA XaRTA Postharvest, Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, 25003, Lleida, Spain;2. IRTA, Centre de Recerca en Agrigenomica, CSIC-IRTA-UAB-UB, Campus UAB, Edifici CRAG, Cerdanyola del Vallès (Bellaterra), 08193 Barcelona, Spain;3. Aragón Agency for Research and Development (ARAID), E-50018, Zaragoza, Spain;4. Agrifood Research and Technology Centre of Aragón (CITA), Horticulture Unit, 50059, Zaragoza, Spain;5. Instituto Agroalimentario de Aragón (IA2), 50013, Zaragoza, Spain |
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| Abstract: | Physiological maturity of peach at harvest greatly influences the post-harvest quality. Changes in colour during the last ripening stages of a very late and firm peach cultivar Prunus persica (L.) Batsch cv. Calanda] have been studied to assess the feasibility of using reflectance colour references as non-destructive indices of maturity. The respiratory peak was simultaneous to the ethylene rise, and both induced important changes in the peaches. The physiological changes brought about a rise in polyphenoloxidase and peroxidase enzyme activity. The amount of carotenoids increased as maturity advanced and more markedly at the climacteric rise. Reflectance spectra and CIELAB coordinates reflected changes in skin and pulp colour and a* and hab evolved nearly in a near linear way. Values of the b* coordinate show changes as well. These findings agree with and extend previous results that reflectance changes can be used as reliable indices to establish the time of physiological maturity in Calanda peaches. |
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