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Frozen yogurt from sheep milk
ABSTRACT The aim of this work was to develop frozen yogurt formulations from powdered yogurt of sheep milk, through an experimental design of 2², with a triplicate at the central point. The variables studied were emulsifier/stabilizer (0.50%, 0.75%, and 1.00%) and powder for cream (2.75%, 3.00% and...
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Published in: | Revista Ceres 2016-10, Vol.63 (5), p.605-613 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | ABSTRACT The aim of this work was to develop frozen yogurt formulations from powdered yogurt of sheep milk, through an experimental design of 2², with a triplicate at the central point. The variables studied were emulsifier/stabilizer (0.50%, 0.75%, and 1.00%) and powder for cream (2.75%, 3.00% and 3.25%). The parameters evaluated were sensory characteristics, texture, and microbiological counts. The results showed that the formulations had counts of S. aureus and fecal coliforms at 45 °C, lactic acid bacteria and Salmonella sp within the limits established by legislation. Instrumental analysis of texture-related parameters (firmness, cohesiveness, adhesiveness, and consistency) of the formulations with different concentrations of emulsifier/stabilizer and cream powder showed no significant differences (p > 0.05). In sensory analysis, Formulations 3 and 4 with lower concentrations of emulsifier/stabilizer scored the highest values, thus indicating good acceptability.
RESUMO Este trabalho teve como objetivo desenvolver formulações de Frozen Yogurt a partir do iogurte em pó de leite de ovelha por meio de planejamento experimental 2², com triplicata no ponto central. As variáveis estudadas foram emulsificante/estabilizante (0,50%, 0,75% e 1,00%) e pó preparo para creme (2,75%, 3,00% e 3,25%) e as respostas foram em termos de características sensoriais, microbiológicas e análise instrumental de textura. Os resultados mostraram que as formulações apresentaram contagem de S. aureus, coliformes termotolerantes a 45 ºC, bactérias láticas e Salmonella sp de acordo com os limites estabelecidos pela legislação. Em relação a análise instrumental de textura todos os parâmetros avaliados (firmeza, coesividade, adesividade e consistência) nas formulações com diferentes concentrações de emulsificante/estabilizante e o pó preparado para creme não apresentaram efeito significativo (p > 0,05). Por meio da análise sensorial as formulações 3 e 4 com menor concentração de emulsificante/estabilizantes foram as que apresentaram maiores pontuações para aceitação global, assim apresentando uma boa aceitabilidade. |
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ISSN: | 0034-737X 2177-3491 0034-737X |
DOI: | 10.1590/0034-737x201663050003 |