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Caracterização do tempo de prateleira durante o desenvolvimento de novos produtos em concentrados líquidos de microalgas para aquacultura
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Abstract(s)
Estima-se que a população mundial irá aumentar rapidamente até 2050, exigindo um aumento significativo da produção alimentar, com uma procura especial de proteínas de alta qualidade. Prevendo-se que a indústria da aquacultura cresça mais 37%, entre 2016 e 2030, e a sua forte dependência de alimentos produzidos a partir de peixes selvagens capturados não seja sustentável. Torna-se imprescindível o desenvolvimento de soluções inovadoras, por forma a manter o setor da aquacultura económico e ambientalmente sustentável, em conformidade com os principais objetivos de desenvolvimento sustentável, definidos pelas Nações Unidas.
O desenvolvimento de produtos comerciais adaptados às exigências do mercado da aquacultura, nomeadamente formulações de microalgas prontas a utilizar, permitem uma otimização e redução dos custos, associados à nutrição dos cultivos auxiliares, nomeadamente na produção de rotíferos, essencial para a produção de larvas marinhas das principais espécies de peixes produzidas em aquacultura. Os produtos em estudo, foram desenvolvidos de modo a se adaptarem às exigências do mercado da aquacultura, neste caso, uma das formulações encontra-se otimizada para a “técnica de água verde” e produção de rotíferos em sistema de batch (fórmula A) e a outra para sistemas intensivos (semi-contínuo), como é o caso do sistema Recirculating aquaculture systems (RAS) (fórmula B). Os produtos desenvolvidos deverão ser devidamente validados, quer em termos da caracterização bioquímica, microbiológica, quer ao nível das características sensoriais, tais como a cor e o aspeto, considerando-se essencial a estabilidade destas ao longo de todo o período de armazenamento e conservação, vulgarmente designado por tempo de prateleira (shelf-life).
Através do presente estágio foi possível efetuar a caracterização do tempo de prateleira de 2 produtos/formulações concentradas líquidas de microalgas da espécie Nannochloropsis sp., através da avaliação de um conjunto de parâmetros, nomeadamente análise sensorial, microbiológica e bioquímica, de forma a efetuar a caracterização e investigação das possíveis alterações que possam comprometer o prazo de validade, quer primário quer secundário definido pela empresa.
It is estimated that the world's population will increase rapidly by 2050, requiring a significant increase in food production, with a particular demand for high-quality proteins. The aquaculture industry is expected to grow by a further 37 per cent between 2016 and 2030, and its heavy dependence on food produced from wild caught fish is not sustainable. It is essential to develop innovative solutions in order to keep the aquaculture sector economically and environmentally sustainable, in line with the main sustainable development goals defined by the United Nations. The development of commercial products adapted to the demands of the aquaculture market, namely formulations of ready-to-use microalgae, allows for the optimization and reduction of costs associated with the nutrition of auxiliary crops, namely in the production of rotifers, which is essential for the production of marine larvae of the main fish species produced in aquaculture. The products under study have been developed to adapt to the demands of the aquaculture market, in this case, one of the formulations is optimized for the "green water technique" and rotifer production in batch systems (formula A) and the other in intensive (semi-continuous) systems, such as the Recirculation Aquaculture System (RAS) (formula B). The products developed will have to be properly validated, both in terms of biochemical and microbiological characterization and in terms of sensory characteristics, such as color and appearance, considering that their stability throughout the storage and conservation period, commonly known as shelf-life, is essential. Through this internship, it was possible to characterize the shelf-life of 2 liquid concentrated products/formulations made from microalgae Nannochloropsis sp., by evaluating a set of parameters, namely sensory, microbiological and biochemical analysis, in order to characterize and investigate possible alterations that could compromise the primary and secondary shelf life defined by the company.
It is estimated that the world's population will increase rapidly by 2050, requiring a significant increase in food production, with a particular demand for high-quality proteins. The aquaculture industry is expected to grow by a further 37 per cent between 2016 and 2030, and its heavy dependence on food produced from wild caught fish is not sustainable. It is essential to develop innovative solutions in order to keep the aquaculture sector economically and environmentally sustainable, in line with the main sustainable development goals defined by the United Nations. The development of commercial products adapted to the demands of the aquaculture market, namely formulations of ready-to-use microalgae, allows for the optimization and reduction of costs associated with the nutrition of auxiliary crops, namely in the production of rotifers, which is essential for the production of marine larvae of the main fish species produced in aquaculture. The products under study have been developed to adapt to the demands of the aquaculture market, in this case, one of the formulations is optimized for the "green water technique" and rotifer production in batch systems (formula A) and the other in intensive (semi-continuous) systems, such as the Recirculation Aquaculture System (RAS) (formula B). The products developed will have to be properly validated, both in terms of biochemical and microbiological characterization and in terms of sensory characteristics, such as color and appearance, considering that their stability throughout the storage and conservation period, commonly known as shelf-life, is essential. Through this internship, it was possible to characterize the shelf-life of 2 liquid concentrated products/formulations made from microalgae Nannochloropsis sp., by evaluating a set of parameters, namely sensory, microbiological and biochemical analysis, in order to characterize and investigate possible alterations that could compromise the primary and secondary shelf life defined by the company.
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Keywords
Aquacultura Rotíferos Microalgas Concentrados líquidos Tempo de prateleira Aquaculture Rotifers Microalgae Liquid concentrates Shelf-life