Caracterização físico-química, energética e sensorial de refresco adoçado de jabuticaba
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Data
2014-02-28
Autores
Boesso, Francine Fricher [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
O objetivo do presente trabalho foi produzir e caracterizar por meio de análises físico-químicas, energéticas e sensoriais refrescos adoçados de jabuticaba, visando o aproveitamento tecnológico e agregação de valor a frutos de jabuticabeira. As matérias-primas utilizadas foram jabuticabas Sabará, açúcar cristal e água duplamente filtrada. O experimento foi desenvolvido em duas etapas. Os ensaios de produção de refresco adoçado de jabuticaba na etapa 1 foram desenvolvidos a partir de seis tratamentos, combinando-se dois métodos de extração de sólidos solúveis (utilizando a jabuticaba inteira e esmagada) e três formulações do refresco adoçado de jabuticaba com diferentes concentrações de sólidos solúveis (10, 12 e 14°Brix). Na etapa 2 os refrescos adoçados de jabuticaba foram elaborados a partir da diluição do xarope (60 e 70°Brix) para obtenção dos refrescos à 12°Brix. Em todos os experimentos os refrescos adoçados de jabuticaba foram analisados físico-quimicamente em relação aos teores de sólidos solúveis, pH, acidez total, ratio, açúcares redutores, açúcares redutores totais, turbidez, bem como tiveram os teores de nutrientes (carboidratos, proteínas, lipídeos, umidade e cinzas) e valores energéticos determinados por meio de análise centesimal. A análise sensorial foi realizada por meio de testes afetivos de aceitação. Na etapa 1, o método de extração, a concentração de sólidos solúveis e a interação desses fatores interferiram nas variáveis físicas (turbidez) e químicas (°Brix, acidez total, AR e cálculo do ratio) de todas as amostras das bebidas elaboradas neste experimento, com exceção dos valores de pH e ART. Energeticamente o método de extração influenciou os teores de proteínas e lipídios presentes nos refresco adoçados de jabuticaba. Os refrescos não apresentaram diferença sensorial quanto ao método de extração utilizado
The aim of this work was to produce and characterize through physical- chemical, energy and soft drinks sweetened jaboticaba sensory analyzes, aiming to use technology and adding value to the fruits. The raw materials used were jaboticaba Sabara, crystal sugar and doubly filtered water. The experiment was conducted in two stages. Assays of producing sweetened soft drink jaboticaba in step 1 were developed from six treatments combining two methods of extraction of soluble solids ( using the whole and crushed blemish blemish) and three formulations of soft drink sweetened with different concentrations jaboticaba soluble solids (10, 12 and 14°Brix). In step 2 the soft drink sweetened jaboticaba were prepared by diluting the syrup (60 and 70°Brix) for obtaining refreshments at 12°Brix. In all experiments jaboticaba sweetened soft drinks were analyzed physico-chemically with respect to soluble solids, pH, total acidity, ratio, reducing sugars, total reducing sugars, turbidity, and had the levels of nutrients (carbohydrates, proteins, 4 lipid, moisture and ash) and energy values determined by proximate analysis. Sensory analysis was performed by means of affective acceptance tests. In step 1, the extraction method, the concentration of soluble solids and the interaction of these factors interfered with physical (turbidity) and chemical variables (°Brix, total acidity, and calculation of the AR ratio) of all samples of beverages prepared in this experiment, except for the values pH and ART. The energy extraction method influenced the levels of proteins and lipids present in soft drink sweetened jaboticaba. Refreshments showed no sensory difference to the extraction method used, but showed significant sensory difference in the concentration of soluble solids present in soft drink (10, 12 and 14°) and refreshments 12 and 14°Brix and the most appreciated in all...
The aim of this work was to produce and characterize through physical- chemical, energy and soft drinks sweetened jaboticaba sensory analyzes, aiming to use technology and adding value to the fruits. The raw materials used were jaboticaba Sabara, crystal sugar and doubly filtered water. The experiment was conducted in two stages. Assays of producing sweetened soft drink jaboticaba in step 1 were developed from six treatments combining two methods of extraction of soluble solids ( using the whole and crushed blemish blemish) and three formulations of soft drink sweetened with different concentrations jaboticaba soluble solids (10, 12 and 14°Brix). In step 2 the soft drink sweetened jaboticaba were prepared by diluting the syrup (60 and 70°Brix) for obtaining refreshments at 12°Brix. In all experiments jaboticaba sweetened soft drinks were analyzed physico-chemically with respect to soluble solids, pH, total acidity, ratio, reducing sugars, total reducing sugars, turbidity, and had the levels of nutrients (carbohydrates, proteins, 4 lipid, moisture and ash) and energy values determined by proximate analysis. Sensory analysis was performed by means of affective acceptance tests. In step 1, the extraction method, the concentration of soluble solids and the interaction of these factors interfered with physical (turbidity) and chemical variables (°Brix, total acidity, and calculation of the AR ratio) of all samples of beverages prepared in this experiment, except for the values pH and ART. The energy extraction method influenced the levels of proteins and lipids present in soft drink sweetened jaboticaba. Refreshments showed no sensory difference to the extraction method used, but showed significant sensory difference in the concentration of soluble solids present in soft drink (10, 12 and 14°) and refreshments 12 and 14°Brix and the most appreciated in all...
Descrição
Palavras-chave
Jabuticaba - Processamento, Bebidas não-alcoólicas, Suco de frutas, Non-alcoholic beverages
Como citar
BOESSO, Francine Fricher. Caracterização físico-química, energética e sensorial de refresco adoçado de jabuticaba. 2014. viii, 64 p. Dissertação (mestrado) - Universidade Estadual Paulista “Julio de Mesquita Filho” , Faculdade de Ciências Agronômicas de Botucatu, 2014.