Desenvolvimento e caracterização reológica de formulações especiais de fondue de chocolate / Development and rheological characterization of chocolate fondue special formulations

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

26/09/2011

RESUMO

Chocolate fondue is a chocolate product which is consumed melted with fruits and cakes. There is a growing interest by consumers in foods that brings some healthy benefits. Brazilian nut oil, oats and omega-3 are some of the most famous functional ingredients nowadays. Thus, the aim of this work was developing enriched formulations containing these ingredients and evaluating rheology through textural analysis, comparing to brand products. Texture was evaluated by probe back extrusion, results being evaluated through Herschel-Bulkley equation, and by consistency test. Chemical analysis pointed that three (of six) formulations showed high content of protein, comparing to brand products. Samples enriched with oats showed a high fiber content. Oat extract was suggested as a good milk fat + sucrose replacer. Among brand products, sample comprising condensed milk and dark chocolate showed the higher values for firmness, consistency coefficient, cohesiveness and viscosity index on back extrusion analysis. Fondues were classified as thinning fluid (n <0) and chocolate bars are thickening fluids (n >1). Break point was alike for all samples. Back extrusion for developed samples pointed that samples containing oat extract showed an overall lower results comparing to the others. Consistency test showed that when conditioned at 10 ºC, sample D shows a good potential for application as chocolate spread; while at 20 ºC, samples C and D perform better. Thus, it was suggested a major quality of enriched samples when compared to brand products, which contains stabilizers, artificial thickener, as a longer shelf life and potential use as spread.

ASSUNTO(S)

rheology shelf life textura texture vida de prateleira chocolate reologia chocolate chocolate products produtos de chocolate

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