Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/5260
Título: Estudo crítico do processo de fabrico de sorbet artesanal. Processo de descontaminação do morango
Autor: Arrepia, Carlos Manuel Araújo
Orientador: Martins, Margarida Moldão
Ramalheira, Maria do Rosário Carvalho
Palavras-chave: sorbet
processing
strawberry
decontamination
Data de Defesa: 2012
Editora: ISA/UTL
Citação: Arrepia, C.M.A. - Estudo crítico do processo de fabrico de sorbet artesanal. Processo de descontaminação do morango. Lisboa: ISA, 2012, 97 p.
Resumo: The present study took place at Santini, S.A., a home made ice cream company, during the transfer layout for the new installations. The main objective was to delineate the manufacturing process of Sorbet, to can determinate the critical points of preparation of fruit (in particular strawberries), in order to optimize the process conditions in the new factory. Initially, still at the old installations, was carried on, the manual mode of strawberry descontamination, where was analysed different binomials time and concentration of sodium hypochlorite, in order to understand those that are more effective. Once defined the best results, it was possible to improve the choosen conditions to the descontamination operation in automatic mode. At the new plant, already at the automatic wash fruit machine 90 ppm solution of sodium hypochlorite was used at different times. Following the temperature, pH solution and % loss of soluble solids (SST) on strawberry, were monitored. It was concluded that for the test conditions in manual mode, the largest logarithmic reduction for microorganisms at 30º C was 2,15 log cycles for the conditions of 81 ppm at 1 minute and 116 ppm at 5 minutes. The application in automatic mode of 90 ppm for 5 minutes proved to be effective in reducing the microbial load present in the strawberry. The SST of the strawberry is inversely proportional to the duration of decontamination unit operation.
Descrição: Mestrado em Engenharia Alimentar - Segurança e Qualidade Alimentar - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/5260
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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