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Fish processing generates large amounts of solid and liquid wastes. Many different by-products have been produced from fish
processing wastes. Studies on solubilization of Bolti fish (Tilapia nilotica) viscera by endogenous enzymes at different pHs are described. Hydrolysis reactions were conducted with freshly thawed viscera
utilizing an initial temperature gradient and terminated at various time points by heat inactivation of the enzymes. Various
peptones obtained from hydrolysed visceral homogenates of Bolti fish residues showed their suitability for promoting the growth
of lactic acid bacteria (mainly Lactobacillus sake Lb 706), microorganisms with particularly complex nutritional requirements especially peptidic sources. The assay of several
treatments with L. sakei Lb 706, producer of the bacteriocin sakacin A, demonstrated that optimum conditions for biomass and bacteriocin production
only imply a brief autohydrolysis at room temperature. The results showed that the Bolti fish hydrolysates gave remarkable
results to those found in costly commercial media, specifically recommended for culturing and large-scale production of lactic
acid bacteria. 相似文献
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