Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.19/1386
Título: Effcet of ripening stage on the solar drying kinetics and properties of S. Bartolomeu pears (Pirus Communis L.).
Autor: Guiné, Raquel
Lopes, Pedro
Barroca, Maria João
Ferreira, Dulcineia
Palavras-chave: hardness
total soluble solids
drying kinetics
Data: 2009
Citação: Guiné R, Lopes P, Barroca MJ, Ferreira DMS. (2009) Effcet of ripening stage on the solar drying kinetics and properties of S. Bartolomeu pears (Pirus Communis L.). International Journal of Academic Research, 1(1), 46-52.
Relatório da Série N.º: 1;1
Resumo: Pears of the variety S. Bartolomeu (Pyrus communis L.) have been used over the years in Portugal to produce a traditional dried pear known as “pera passa”. The processing comprehends a solar drying performed at open air, with obvious disadvantages, either concerning the drying efficiency or the sanitary quality of the final product, taking into account that the products are exposed to multiple contamination agents. For these reasons, attempts have been made to study alternative production methodologies, including the use of solar stoves, among others. In the present work pears of the variety S. Bartolomeu (Pyrus communis L.), harvested at three different moments, corresponding to three ripening stages, were dried in a solar stove and their drying kinetics were studied, and the evolution of some properties was monitored along the drying process. From the results obtained it was possible to conclude that the equations used to model the drying kinetics fit with accuracy the experimental data, and that the climatic conditions that occurred in each drying period influenced the drying rate, being essay one clearly faster than the other two essays. On the other hand, considering the evolution of the properties of the pears along drying, it was possible to observe that the pears harvested in the two first dates showed quite similar trends through drying, while the pears harvested at the last date revealed a clear distinct behavior, allowing to deduce that the ripening stage at harvest plays an important role in the drying process.
Peer review: yes
URI: http://hdl.handle.net/10400.19/1386
Aparece nas colecções:ESAV - DIA - Artigos publicados em revista científica

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