Objective To understand the effect of sodium diacetate on the growth and toxin production of Burkholderia gladioli in fresh wet rice noodles medium. Methods A total of 10 Burkholderia gladioli strains isolated from wet rice noodles samples and rice raw materials and purchased by the strain preservation center were used as research objects. The strains were inoculated into the medium supplemented with different proportions of sodium diacetate to study the growth and toxin production of the strains in the medium. Results The growth of 10 strains of Burkholderia gladioli in BHI broth was consistent. Sodium diacetate had consistent inhibitory effects on different bacterial strains. When the addition of sodium diacetate in BHI broth was more than 0.1%, the growth of 10 strains of Burkholderia gladioli was significantly inhibited, and there was no bacterial growth when the addition reached 0.2%. In BHI semi-solid medium and wet rice noodles medium, when sodium diacetate was added more than 0.1%, the growth of Burkholderia gladioli was significantly weakened or even completely inhibited, and the production of bongkrekic acid was also greatly reduced. Conclusions Sodium diacetate can effectively inhibit the growth of Burkholderia gladioli and reduce the production of bongkrekic acid. It is expected to become a safe and effective preservative or compound preservative that can act on Burkholderia gladioli, reducing the risk of contamination by Burkholderia gladioli at a more affordable cost in the industry.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |