Inhibition of Starter Culture on Nitrite and Biogenic Amines in Fermented Duck Sausage

In order to explore the inhibition of starter on nitrite and biogenic amines in duck fermented sausage, and provide a theoretical basis for the development and safety control of fermented sausage products. Lactobacillus fermentum RA₃ and Lactobacillus plantarum RC₄ were inoculated into duck fermented sausage with single or compound strains, and compared with the natural fermentation group, the nitrite, biogenic amines and other physicochemical indexes of the sausage were determined. The results showed that during the processing and storage of sausage, the total number of bacterial colony and the content of biogenic amines in the experimental group increased first and then decreased. While the content of volatile basic nitrogen (TVB-N) and biogenic amine in natural group increased gradually. The content of nitrite showed a downward trend. In addition, the pH, TVB-N and nitrite content were always lower than those in the natural group. On the 28th day, the nitrite content of the RF group was 1.33 mg/kg lower than that of the natural group. From the day 21 to 28, the total number of colonies in the experimental group was significantly lower than that in natural group (P<0.05). In conclusion, inoculating starter could effectively reduce the total number of colonies to a certain extent, while the formation of nitrite and biogenic amines was significantly inhibited (P<0.05), thereby improving the safety of sausage.