Desenvolvimento e aceitação de pasta de abacate com potencial probiótico
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Data
2018-02-23
Autores
Ramos, Juliana Arruda
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O crescente interesse pelos alimentos funcionais tem impulsionado a pesquisa na elaboração de novos produtos. Os probióticos são microrganismos vivos capazes de trazer inúmeros benefícios aos consumidores, como ação imunomoduladora e anti-inflamatória sendo frequentemente utilizados em produtos à base de leite. O abacate é uma fruta rica em fitoquímicos e pode ser utilizada para elaboração de um produto com potencial probiótico. O objetivo desse trabalho foi desenvolver e avaliar sensorialmente pasta de abacate com potencial probiótico durante o período de armazenamento, verificando a viabilidade dos Lactobacillus rhamnosus e os compostos bioativos. Foi desenvolvida pasta de abacate com açúcar, cacau, lecitina de soja e ácido cítrico. A pasta foi dividida em potes plásticos opacos identificados por dias de análises e irradiada a 5kGy. Em metade da quantidade de pasta foi inoculado o Lactobacillus rhamnosus liofilizado. Logo após, foi armazenada em geladeira a 2 °C por 40 dias. A cada cinco dias foram avaliadas quanto a viabilidade do L. rhamnosus, contaminação por bolores e leveduras, microrganismos psicotróficos e mesófilos, análise sensorial, coloração, análises físico químicas, atividade antioxidante, compostos fenólicos e flavonoides. A presença dos probióticos não interferiu no pH, nos teores de umidade, cinzas, fibras, proteínas, compostos fenólicos, atividade antioxidante e nas notas dadas pelos provadores. Sendo que o período de armazenamento afetou todos os fatores analisados, com exceção da umidade e da concentração de proteína. A viabilidade do L. rhamnosus permaneceu constante, com média de 9,03x107 UFC g-1 durante os quarenta dias de avaliação, sem contaminação por bolores e leveduras e microrganismos psicotróficos e mesófilos. A pasta de abacate foi um substrato eficiente para viabilidade dos L. rhamnosus.
The growing interest in functional foods has driven research into new product innovation. Probiotics are living microorganisms capable of bringing countless benefits to consumers, such as immunomodulatory and anti-inflammatory action, they are more commonly used in milk-based products. Avocado is a fruit rich in phytochemicals and can be used to produce a product with probiotic potential. The objective of this work was to develop and evaluate sensorially avocado paste with probiotic potential during the storage period, besides analyzing the viability of the Lactobacillus rhamnosus and the bioactive compounds of the paste. Avocado paste with sugar, cocoa, soy lecithin and citric acid was developed. The paste was divided into opaque plastic pots identified by days of analysis and irradiated at 5kGy. In half the amount of paste, the lyophilized Lactobacillus rhamnosus was inoculated. Soon after, it was stored in a refrigerator at 2 °C for 40 days. Every five days the viability of L. rhamnosus, yeast and mold contamination, psychotrophic and mesophilic microorganisms, sensory analysis, coloration, physical chemical analyzes, antioxidant activity, phenolic compounds and flavonoids were evaluated. The presence of probiotics did not interfere in pH, moisture content, ash, fiber, protein, phenolic compounds, antioxidant activity and in the notes given by the tasters. The storage period affected all factors analyzed, except for moisture and protein concentration. The viability of L. rhamnosus remained constant, with a mean of 9.03x107 CFU g-1 during the forty days of evaluation, without contamination by molds and yeasts, and psychotrophic and mesophilic microorganisms. Avocado paste was an efficient substrate for L.rhamnosus viability.
The growing interest in functional foods has driven research into new product innovation. Probiotics are living microorganisms capable of bringing countless benefits to consumers, such as immunomodulatory and anti-inflammatory action, they are more commonly used in milk-based products. Avocado is a fruit rich in phytochemicals and can be used to produce a product with probiotic potential. The objective of this work was to develop and evaluate sensorially avocado paste with probiotic potential during the storage period, besides analyzing the viability of the Lactobacillus rhamnosus and the bioactive compounds of the paste. Avocado paste with sugar, cocoa, soy lecithin and citric acid was developed. The paste was divided into opaque plastic pots identified by days of analysis and irradiated at 5kGy. In half the amount of paste, the lyophilized Lactobacillus rhamnosus was inoculated. Soon after, it was stored in a refrigerator at 2 °C for 40 days. Every five days the viability of L. rhamnosus, yeast and mold contamination, psychotrophic and mesophilic microorganisms, sensory analysis, coloration, physical chemical analyzes, antioxidant activity, phenolic compounds and flavonoids were evaluated. The presence of probiotics did not interfere in pH, moisture content, ash, fiber, protein, phenolic compounds, antioxidant activity and in the notes given by the tasters. The storage period affected all factors analyzed, except for moisture and protein concentration. The viability of L. rhamnosus remained constant, with a mean of 9.03x107 CFU g-1 during the forty days of evaluation, without contamination by molds and yeasts, and psychotrophic and mesophilic microorganisms. Avocado paste was an efficient substrate for L.rhamnosus viability.
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Palavras-chave
Persea americana Mill, Cacau, L.rhamnosus, Irradiação, Compostos bioativos, Cocoa, Irradiation, Bioactive compounds