sp. G6 isolated from goose intestine as starter culture for degrading nitrite and improving quality in Chinese pickle fermentation.

UNLABELLED

Animal intestines is considered as a source of lactic acid bacteria (LAB) that have potential to decrease the nitrite level during fermentation of food such as pickles. It was hypothesized that optimized level of LAB has a high capacity to degrade nitrite during Chinese pickle fermentation and benefit a higher acceptability of the Chinese pickle product. This study aims to investigate the performance of a goose intestine-isolated LAB strain G6 under the species as a starter culture of Chinese pickles. The results showed that sp. G6 had a nitrite degradation rate close to 100% under the MRS broth condition of 25 °C, 2% inoculum volume and pH at 5. As a starter culture for Chinese pickle, this strain was able to achieve a higher LABs amount, lower nitrite residue after fermentation, compared with the group without the starter, which implicates its feasibility of applying on fermented food for reducing nitrite level.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s10068-023-01433-8.