168074 20260126155509.0 doi 10.1016/j.scienta.2005.02.002 sideral 56001 ART-2005-56001 eng Ferrer, A. Universidad de Zaragoza (orcid)0000-0001-5765-2972 Changes During the Ripening of the Very Late Season Spanish Peach Cultivar Calanda - Feasibility of Using Cielab Coordinates as Maturity Indices 2005 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. info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 0.583 2005 HORTICULTURE 11 / 21 = 0.524 2005 Q3 T2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Remon, S. Universidad de Zaragoza (orcid)0000-0002-2147-9263 Negueruela, A. I. Universidad de Zaragoza (orcid)0000-0001-9675-8307 Oria, R. Universidad de Zaragoza (orcid)0000-0001-8836-1983 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 2008 780 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Tecnología de Alimentos 105, 4 (2005), 435-446 Sci. hortic. SCIENTIA HORTICULTURAE 0304-4238 242452 http://zaguan.unizar.es/record/168074/files/texto_completo.pdf Versión publicada 1180202 http://zaguan.unizar.es/record/168074/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:168074 articulos driver 2026-01-26-14:49:51 ARTICLE