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Abstract
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Article Information:
Proteolytic Characterization of Trimmed Beef Fermented Sausages Inoculated by Indonesian Probiotics: Lactobacillus plantarum IIA-2C12 and Lactobacillus acidophilus IIA-2B4
Dyah Nurul Afiyah, Irma Isnafia Arief and Cahyo Budiman
Corresponding Author: Irma Isnafia Arief
Submitted: October 05, 2014
Accepted: November 3, 2014
Published: May 05, 2015 |
Abstract:
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Proteolysis is one of the most important biochemical changes affecting proteins during the ripening and preservation of fermented beef sausages. In this study, proteolytic activities of two Indonesian probiotics, Lactobacillus plantarum IIA-2C12 and Lactobacillus acidophilus IIA-2B4 used as starters in trimmed beef are investigated. IIA-2B4 used as starters in trimmed beef are investigated. L. plantarum IIA-2C12 and L. acidophilus displayed remarkable proteolytic activities against milk casein substrate, in which the activity of L. plantarum IIA-2C12 is higher than that of L. acidophilus IIA-2B4. Similar evidences were observed when proteolytic activities of both strains were visualized by using SDS-Page against meat sarcoplasmic proteins. The differences in the number of proteases encoded by the genomes of both starters might account for these differences. The activities of both strains were slightly reduced upon storage at room temperature for 28 days due to decreasing of the amount of substrate and or stability of proteases. In addition, we found also that the sausage inoculated by L. acidophilus IIA-2B4 tends to produce more aromatic amino acids than that of L. plantarum IIA-2C12. This might differently contribute to flavor (especially aroma) of both sausages. Altogether, this is, to our knowledge, first evidences for the proteolytic activity of L. acidophilus strain towards muscle proteins during sausage fermentation.
Key words: Lactobacillus acidophilus IIA-2B4, Lactobacillus plantarum IIA-2C12, meat sarcoplasmic protein, proteolysis, trimmed beef sausage, ,
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Cite this Reference:
Dyah Nurul Afiyah, Irma Isnafia Arief and Cahyo Budiman, . Proteolytic Characterization of Trimmed Beef Fermented Sausages Inoculated by Indonesian Probiotics: Lactobacillus plantarum IIA-2C12 and Lactobacillus acidophilus IIA-2B4. Advance Journal of Food Science and Technology, (1): 27-35.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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