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|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.
|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.|
|Aparece nas colecções:||CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review|
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