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Fermentative recovery of lipids and proteins from freshwater fish head waste with reference to antimicrobial and antioxidant properties of protein hydrolysate.

Ms., Ruthu and Pushpa, S. Murthy and Amit Kumar, Rai and Bhaskar, N. (2014) Fermentative recovery of lipids and proteins from freshwater fish head waste with reference to antimicrobial and antioxidant properties of protein hydrolysate. Journal of Food Science and Technology, 51 (9). pp. 1884-1892. ISSN 0022-1155

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Abstract

Effectiveness of fermentation using lactic acid bacteria (LAB) for recovering lipids and proteins simultaneously from freshwater fish head (FWH) was evaluated. Three different proteolytic LAB (Pediococcus acidilactici NCIM5368, Enterococcus faecium NCIM5335 and Pediococcus acidilactici FD3) isolated from fish processing wastes were employed in the fermentation process. The fermentation conditions involved 10 % (w/w) glucose, 2 % (w/w) NaCl and 10 % (v/w) LAB cultures at 37 °C. The process resulted in 38.4 % of degree of hydrolysis (in case proteins) and a recovery of 63.6 % of the oil present in the material. The fermentation process did not affect the fatty acid profile of lipids. The hydrolyzed protein rich fermentation liquor exhibited DPPH radical scavenging activity (EC50 – 5.1 mg protein) as well as antagonistic properties towards several bacterial and fungal pathogens. The minimum inhibitory concentrations (MIC) of fermentated liquor (with E. faecium NCIM5335 as starter) were 10 and 12 mg/ ml for Listeria monocytogenes and Salmonella itridicus, respectively. A higher MIC (60 and 96 mg/ml for Aspergillus ochraceus and Penicillium chrysogenum, respectively) was observed in case of fungal pathogens. Both the oil and protein hydrolysate rich liquor from fish head can be used as biofunctional ingredients in both human food as well as livestock feed formulations.

Item Type: Article
Uncontrolled Keywords: Fish head Lactic acid bacteria Lipids Protein Antioxidant Antimicrobial
Subjects: 500 Natural Sciences and Mathematics > 07 Life Sciences > 03 Biochemistry & Molecular Biology > 11 Lipid Biochemistry
600 Technology > 08 Food technology > 28 Meat, Fish & Poultry > Fish
Divisions: Meat Fish and Poultry Technology
Plantation Products Spices and Flavour Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 26 Sep 2014 07:55
Last Modified: 26 Sep 2014 07:55
URI: http://ir.cftri.com/id/eprint/11643

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