Effect of Combination of Lactiplantibacillus plantarum IMAUJBP3 and Limosilactobacillus reuteri IMAUJBR3 on the Quality and Peptide Antioxidant Capacity of Fermented Lamb Sausages

To investigate the effect of the combination of Lactiplantibacillus plantarum IMAUJBP3 and Limosilactobacillus reuteri IMAUJBR3 on the quality and peptide antioxidant capacity of fermented sausages, this study prepared fermented lamb sausages with a mixed culture of the two strains and evaluated it for quality indicators, flavor, peptide content, and antioxidant activity. The results indicated that the combination of lactic acid bacteria rapidly reduced the pH, water activity (aw), and moisture content of fermented sausages. A total of 24 substances with relative odor activity value (ROAV) > 1 such as ethyl butyrate, ethyl valerate, linalool, and trans-2-nonanal were found to play a dominant role in the flavor of fermented sausages. The combination of lactic acid bacteria significantly increased the peptide content and antioxidant activity of fermented sausages (P < 0.05). In summary, the combination of L. plantarum IMAUJBP3 and L. reuteri IMAUJBR3 can improve the quality, flavor, and peptide antioxidant activity of fermented lamb sausages to a certain extent.