ResumoGarapa e extrato de levedura foram usados na produção de asparaginase por Zymomonas mobilis CP4. Na otimização utilizou metodologia de superfície de resposta com 2 variáveis (extrato de levedura e asparagina) em 3 níveis (1,0; 5,5 e 10,0 g/L) e uma repetição do ponto central. A fermentação em batelada utilizou garapa diluída a 8 % (P/V) de Açúcares Totais e inóculo de Zymomonas mobilis CP4 na concentração de 2 mg/mL. Após a fermentação de 18 horas, a maior produção obtida de asparaginase foi de 9,75 U/L em extrato de levedura em 5,5 g/L e asparagina em 1,0 g/L. Palavras-chave: Garapa, Zymomonas mobilis, asparaginase, fermentação AbstractSugar cane juice and yeast extract have been used for asparaginase production by Z. mobilis CP4. A complete factorial design of two variables (yeast extract and asparagin) at three levels (1.0; 5.5 and 10.0 g/L) with one replication at the central point was used. Batch fermentation utilised sugar cane juice diluted at 8 % (W/V) of Total Sugars and an inoculum of 2 mg of cells/mL. After fermentation time of 18 hours, the highest production of asparaginase was 9.75 U/L using both yeast extract (5.5 g/L) and asparagin (1.0 g/l).
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