Production of protease by Bacillus subtilis grown on sardinelle heads and viscera flour
2001
Ellouz, Y. | Bayoudh, A. | Kammoun, S. | Gharsallah, N. | Nasri, M.
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.
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