Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/17599
Título: Effect of pre-treatments on solar drying kinetics of red seedless grapes (cv. Monukka)
Autor: Ramos, Inês N.
Brandão, Teresa R. S.
Silva, Cristina L. M.
Palavras-chave: Pre-treatments
Solar drying
Data: 2014
Citação: RAMOS, Inês N.; BRANDÃO, Teresa R. S; SILVA, Cristina L. M. - Effect of pre-treatments on solar drying kinetics of red seedless grapes (cv. Monukka). International Journal of Food Studies. ISSN 2182-1054. Vol. 3 (2014), p. 239-247
Resumo: Two di erent pre-treatments were applied to grapes prior to drying in a mixed mode solar dryer. Grapes were blanched in water and in a 0.1% sun ower oil water emulsion, both at 99 C and for approximately 15 seconds. Several models were tested to t the experimental data of drying curves but the normalized Newton model gave the best t results. Samples blanched in hot water or in the 0.1% edible oil emulsion had faster drying rates than untreated samples. Contrary to what was expected, pre-treating with the 0.1% edible oil emulsion did not increase the drying rate to a higher extent than blanching. Pre-treatments did not give a noteworthy di erence in the total drying time. However, they had an important role in accelerating initial drying rates, thus preventing moulds and bacterial growth and consequently increasing farmers' income.
Peer review: yes
URI: http://hdl.handle.net/10400.14/17599
Aparece nas colecções:CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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