title: Production of protease by Bacillus subtilis grown on sardinelle heads and viscera flour.
abstract: Fish flours from Sardinelle (Sardinella aurita) were prepared and tested for protease production by Bacillus subtilis. Protease synthesis was strongly induced when cells were grown in media containing only a combined head and viscera preparation. Sardinelle heads and viscera flour enhanced protease production up to 100% more than commercial peptones. The enhancement could have been due to a high lipid content, which might have contained nutritional factors acting as inducers, since defatting fish meal led to a decrease in protease production.
authors.affiliation: Unité de Technologie Enzymatique et de Microbiologie, Ecole Nationale d'Ingénieurs de Sfax, BPW, Tunisia. yosra.ellouze@voila.fr
authors.forename: Y
authors.initials: Y
authors.lastname: Ellouz
authors.forename: A
authors.initials: A
authors.lastname: Bayoudh
authors.forename: S
authors.initials: S
authors.lastname: Kammoun
authors.forename: N
authors.initials: N
authors.lastname: Gharsallah
authors.forename: M
authors.initials: M
authors.lastname: Nasri
mesh_terms: D001412:Bacillus subtilis / Q000201:enzymology* / Q000254:growth & development; D010450:Endopeptidases / Q000096:biosynthesis*; D005396:Fish Products / Q000382:microbiology*; D006868:Hydrolysis
chemical_list: D010450:Endopeptidases