Impact of processing conditions and gelling agent on physical and sensorial properties of pecan oil-dulce de leche gummy candies

Abstract For the development of gelatinized dairy products that include emulsified pecan oil as an unsaturated fatty acid source the incorporation of hydrocolloids becomes necessary and their properties must be carefully selected. This work aimed to study gelatinized candies made with 0% milk fat du...

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Veröffentlicht in:Brazilian Journal of Food Technology 2020, Vol.23, p.1-11
Hauptverfasser: Ranalli, Natalia, Adornato, Luz, Califano, Alicia Noemí, Andrés, Silvina Cecilia
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Sprache:eng
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Zusammenfassung:Abstract For the development of gelatinized dairy products that include emulsified pecan oil as an unsaturated fatty acid source the incorporation of hydrocolloids becomes necessary and their properties must be carefully selected. This work aimed to study gelatinized candies made with 0% milk fat dulce de leche with pre-emulsified pecan nut oil using combinations of gelatin (4.67 to 7 g/100 g) and high methoxyl pectin (1.33 to 2 g/100 g) as gelling agents. The effect of different drying methods (vacuum-oven at 35 °C for 24 h and freeze-drying) was evaluated. Control samples without drying were also studied. Dehydration conditions significantly (p < 0.05) affected aw, texture (hardness, cohesiveness, adhesiveness, gumminess, springiness, and resilience) and color parameters (L*, a*, b*) of products, being higher than the effect of the gelling agent. Formulations were selected based on texture and aw criteria and sensory evaluated by appearance, color, texture, taste, and overall acceptability. Two formulations (one with 7% gelatin and 1.33% high methoxyl pectin content, and the other with 2% high methoxyl pectin and 4.67% gelatin content), both with low moisture content and vacuum-dried, exhibited good acceptability. These pecan oil-dulce de leche gummy candies would represent a healthier candy version, low in saturated fatty acids, and source of oleic acid. Resumo Para o desenvolvimento de produtos lácteos gelatinizados que incluem óleo de nozes pecã emulsionado, como fonte de ácido graxo insaturado, a incorporação de hidrocoloides se torna necessária, e as propriedades devem ser cuidadosamente especificadas. O objetivo deste trabalho foi estudar balas de goma feitas com doce de leite 0% de gordura de leite e com óleo de noz-pecã pré-emulsionado, utilizando combinações de gelatina (4,67 a 7 g/100 g) e pectina de alto grau de metoxilação (1,33 a 2 g/100 g) como agentes gelificantes. O efeito de diferentes métodos de secagem (estufa a vácuo a 35 °C por 24 h e liofilização) foi avaliado. Amostras-controle sem secagem também foram estudadas. As condições de desidratação afetaram significativamente (p < 0,05) a textura (dureza, coesividade, adesividade, gomosidade, elasticidade e resiliência) e os parâmetros de cor (L *, a *, b *) dos produtos, sendo superiores ao efeito do agente gelificante. As formulações foram selecionadas com base nos critérios de textura e aw, e avaliadas sensorialmente quanto a aparência, cor, textura, sabor e aceitabilidade geral. Duas
ISSN:1981-6723
1516-7275
1981-6723
DOI:10.1590/1981-6723.17719