Free Access
Volume 52, Number 513-514, 1972
Page(s) 175 - 192
Lait 52 (1972) 175-192
DOI: 10.1051/lait:1972513-51410

Aptitude de l'espèce Penicillium caseicolum à la production d'enzymes lipolytiques


Laboratoire de Recherche de la Chaire de Technologie (I.N.R.A.). Ecole Nationale Supérieure Agronomique de Grignon (78)

(Reçu pour publication le 26 octobre 1971.)

Abstract - Aptitude of Penicillium caseicolum in production of lipolytic enzymes
The aptitude of Penicillium caseicolum lipases has been searched for in a collection of about 100 strains of various origins by cultivation in liquid medium. The lipasic activity has been tested on culture filtrates by measuring the pH variations in a slightly buffered emulsion of tributyrin. The strains of P. caseicolum show lipasic activities that may be quite different, the variations of these activities being possible between 1 and 10. The repartition of the strains, according to their activity, show the caracteristics of a bimodal type distribution, and two homogeneous under-groups can be distinguished. A positive correlation is shown between the extracellular lipasic and proteolytic activities.