Ellouz Y, Bayoudh A, Kammoun S, Gharsallah N, Nasri M. Production of protease by Bacillus subtilis grown on sardinelle heads and viscera flour.
Bioresour Technol 2001;
80:49-51. [PMID:
11554601 DOI:
10.1016/s0960-8524(01)00057-8]
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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.
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