Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/4081
Título: Produção de sucedâneos de cereais de pequeno-almoço ricos em compostos bioactivos
Autor: Fonseca, Margarida Cruz
Orientador: Barros, Sara Beirão da Costa Teixeira
Martins, Margarida Moldão
Palavras-chave: breakfast cereals
extrusion cooking
dwells on tomato
chestnut flour
bioactive compounds
Data de Defesa: 2011
Editora: ISA/UTL
Citação: Fonseca, Margarida Cruz - Produção de cereais de pequeno-almoço ricos em compostos bioactivos. Lisboa: ISA, 2011
Resumo: The main goal of this paper was to produce breakfast cereal substitutes from undervalued materials (dwells on tomato and chestnut flour), full of extrusion-cooking bioactive compounds. In the first phase, there was a physicochemical characterization of raw materials to use, in order to verify the presence of bioactive compounds and to define the processing conditions. In the second phase, it was the production and characterization of the substitutes. The parameters of the process that were studied were mixture composition, temperature and extrusion spin speed of extrusion process. So, it was established na array of experimental design with the following limits of variation: temperature T2 T3 = 110-150ºC, 10-50% of the sample composition of dwells on tomato, with the remainder of chestnut flour, and spin speed of 100-204 rpm. The products obtained were evaluated for color, texture absorption capacity, microstructure and antioxidant activity. The results indicated that the characteristics of extruded depend on the processing temperature and composition of the mixture. Thus, the extruded with highest quantity of dwells were those who absorbed more milk, with low hardness and a lower rate of expansion. The antioxidant activity of the products obtained was maximized for intermediate concentrations (40/50%) of dwells on tomato and processing temperature (120 º to 140 º C). It can be concluded that it is possible to obtain extruded products, alternative to breakfast cereals from dwells on tomato and chestnut flour with antioxidant activity.
Descrição: Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/4081
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
TESE Versão definitiva.pdf16,26 MBAdobe PDFVer/Abrir


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.