Desenvolvimento e avaliação de bebida láctea fermentada acrescida de leitelho e saborizada com polpa de cagaita (Eugenia dysenterica)

Abstract

Sustainable development has been the transformative purpose of Agenda 2030, implemented by all UN member countries. In order to prevent malnutrition and to use sustainable production and adequate management to protect the planet from degradation, there are opportunities for the development of innovative products. The objective of this study was to develop different formulations of fermented dairy beverage supplemented with buttermilk and flavored with cagaita pulp (Eugenia dysenterica), evaluating its physicochemical, microbiological and sensorial acceptance characteristics. Seven formulations were prepared with different concentrations of milk, whey/buttermilk mixture and cagaita pulp, determined through the simplex centroid design. The formulations were fermented with traditional mixed milk culture composed of Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus. The physico-chemical analyzes reported for the raw material and for the formulations were: pH, acidity, moisture content, ash, protein, lipids, carbohydrates and total energy value. Microbiological analyzes carried out on the formulations were: MPN of Coliforms at 35 ° C, MPN of Coliforms at 45 ° C and Salmonella sp. In the formulations counts of lactic acid bacteria and mold and yeast were determined weekly to determine shelf life. Except formulations F3 and F6, the other formulations showed lactic acid bacteria counts, for fourteen days refrigerated storage, within the standard established by brazilian legislation (6 log10CFU/mL). All fermented dairy drinks presented physical and chemical characteristics within the standards established by brazilian legislation. The whey/buttermilk mixture of the B processing had a higher acidity and a lower pH value in relation to the A and C processing, resulting in the formation of lumps in the formulations F4 and F7 that were manufactured in this processing. The formulations that presented higher milk concentrations were the formulations with lower syneresis and higher sensory scores regarding appearance and consistency. The results indicate that the most cost-benefit formulation is F2, which presents high concentration of co-products, low concentration of pulp and thus a low cost for its manufacture. In addition, he obtained high marks in the attributes oriented in the sensorial analysis and purchase intention.