| Resumen: | In order to select marine bacteria with the ability to produce extracellular enzymes (EEC), samples from Argopecten purpuratus and Crassostrea gigas in cultivation as well as from other intertidal and benhic invertebrates were analyzed. The selection of producer EEC strains was carried out in Marine Agar (MA) with addition of the relevant substratum (starch, casein, tween-80, lecithine, DNA and gelatine). The EEC producer strains evaluation was carried out on 102 isolates. The resultats show that bacteria associater to A. purpuratus and C. gigas have the best multienzymatic activities; however, Semimytilus algosus, Tetrapigus niger and Tahis chocolata are also important sources of bacteria producers of EEC. The qualitative multinzymatic activity in MA (clear or opaque zones around the colonies in mm of diameter) varied from 6to > 16 mm. The frecuency of multinzymatic production was caseinase 62,74 for one hundred, tween-esterase 57,84 for one hundred, amylase 52,94 for one hundred, gelatinaes 38,23 por ciento, DNAse 33,3 for one hundred, agarase 5,43 for one hundred and lecithinase 90,0 for one hundred. The results suggest the possibility of using native strains for biotechnologycal purposes. (AU)^ien.
|
