Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/6691
Título: Sensorial and physicochemical quality responses of pears (cv Rocha) to long-term storage under controlled atmospheres
Autor: Galvis-Sánchez, Andrea C
Fonseca, Susana C
Morais, Alcina MMB
Malcata, F Xavier
Palavras-chave: Pyrus communis L
Sensory quality
PPO activity
Phenolic compounds
Regression analysis
Data: Ago-2004
Editora: Wiley
Citação: "Journal of the science of food and agriculture" . ISSN 0022-5142. 84:13 (2004)1646-1656
Resumo: Pears (cv Rocha) kept under controlled atmospheres (CA) and air were evaluated after longterm storage in terms of sensory attributes and physicochemical parameters, namely colour, firmness, polyphenoloxidase (PPO) activity and concentration of hydroxycinnamic compounds. The CA conditions were all combinations of 2 and 4% (v/v) O2 with 0.5 and 1.5% (v/v) CO2. Storage under CA conditions produced a beneficial effect on ‘Rocha’ pears in maintaining their quality and, consequently, in extending their shelf life and acceptability. Clear differences in sensorial attributes, colour parameters and PPO activity were found between CA- and air-stored pears. The effect provided by the CA conditions persisted throughout the time of exposure to the open air. The 2%O2 concentration produced amore beneficial effect than its 4%counterpart on the sensorial and physical characteristics of the pears.The former concentration of O2 prevented yellowing and allowed regular softening, hence keeping a high flavour quality. No clear effects could be associated with CO2 levels. Empirical models were developed that describe the effects of O2 and CO2 concentrations, as well as time at room temperature on physicochemical parameters pertaining to ‘Rocha’ pears.
Peer review: yes
URI: http://hdl.handle.net/10400.14/6691
Versão do Editor: The definitive version is available at www3.interscience.wiley.com
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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