AVALIAÇÃO DA ETAPA DE CENTRIFUGAÇÃO NA PRODUÇÃO DE β- GALACTOSIDADE POR Aspergillus oryzae EM SORO DE QUEIJO
AVALIAÇÃO DA ETAPA DE CENTRIFUGAÇÃO NA PRODUÇÃO DE β- GALACTOSIDADE POR Aspergillus oryzae EM SORO DE QUEIJO
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DOI: https://doi.org/10.22533/at.ed.5702429012
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Palavras-chave: Soro; centrifugação; Aspergillus; lactase.
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Keywords: Whey; centrifuge; Aspergillus, lactase.
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Abstract: The dairy industry produces large amounts of whey as a by-product, which has led to considerable environmental problems due to its high organic matter content. In recent decades, possibilities for more efficient use from an environmental and economic point of view have been studied, mainly to convert unwanted end products into raw material for biotechnological production of products with higher added value, such as β- galactosidase, an enzyme used to hydrolyze lactose. This enzyme can be produced by the fungus Aspergillus oryzae, which is widely used in industrial applications. Therefore, the work aimed to produce lactase using Aspergillus oryzae and cheese whey as substrates, followed by the centrifugation step to concentrate the enzyme and evaluate its influence before purification. A factorial design of 2² was tested using rotations (500 to 880 rpm) and time (20 to 40 min) as independent variables and enzymatic activity as response. The serum presented satisfactory results as substrate in the production of enzymes, as well as an increase in lactase production according to the increase in glucose concentration. Finally, it was observed that centrifugation is essential before the conventional purification steps, as it allowed an increase of 26.06% in the enzymatic activity of the raw broth.
- Werlisson Santos Souza
- Priscila Reis dos Santos Gonçalves
- Graziella do Nascimento Silva
- Raiane Vieira Chaves
- Sandy Poderoso da Rocha
- Roberto Rodrigues de Souza
- Jacqueline Rêgo da Silva Rodrigues
- Keilla Santos Cerqueira