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Purification and characterization of β-Fructosidase with inulinase activity from Aspergillus niger - 245 BABT
Cruz,Vinícius D'Arcadia; Belote,Juliana Gisele; Dorta,Claudia; Santos,Luíza Helena Oliveira dos; Andriolo,Cláudia Regina; Khenayfes,Marcelo de Oliveira; Cruz,Rubens.
Aspergillus niger - 245, a strain isolated from soil samples showed good β-fructosidase activity when inoculated in medium formulated with dahlia extract tubers. The enzyme was purified by precipitation in ammonium sulphate and percolated in DEAE-Sephadex A-50 and CM-cellulose columns, witch showed a single peack in all the purification steps, maintaining the I/S ratio between 0.32 to, 0.39. Optimum pH for inulinase activity (I) was between 4.0 - 4.5 and for invertase activity (S) between 2.5 and 5.0. The optimum temperature was 60O.C for both activities and no loss in activity was observed when it was maintained at this temperature for 30 min. The Km value was 1.44 and 5.0, respectively, for I and S and Vm value 10.48 and 30.55, respectively. The I...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Inulinase; Invertase; Β-fructosidase; Inulin; Fructose syrup; Aspergillus niger.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000300003
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