Seleção de microorganismos produtores de fosfolipase, otimização da produção e caracterização da enzima bruta

AUTOR(ES)
DATA DE PUBLICAÇÃO

2001

RESUMO

The screening of phospholipase producing filamentous fungi was performed including 600 strains of microorganisms which were isolated from samples of soil, fruits and industrial residues. They were tested for phospholipase activity using a method based on lecithin agar and Rhodamine B. 96 strains were selected and its enzyme production were done using medium containing 5% com steep liquor, 1% glucose, 0,51% NaNO3,0,1% KH2PO4, 0,025% MgSO4.7H20, 0,0046% CaCI2, 0,000632% FeSO4.7H20 e 0,0000234% CuSO4.5H20, pH 4,5 at 25 for 72 hours. Two strains (212 and 1068)showed high phospholipaseactivity. The effect of olive oil as carbon source were examined in the culture medium. The crude enzymes showed high activity at 45°C and pH 4,5. The enzymes required Ca+2for the activity.

ASSUNTO(S)

soja aspergilos lecitina fosfolipases

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