using l1523 small fermentation tank fermentation of bacillus subtilis fermentation broth for the liquid beef extract peptone medium.
试验采用l1523小型发酵罐对枯草芽孢桿菌进行发酵生产,发酵液为液体牛肉膏蛋白胨培养基。
moreover, single use of beef extract peptone medium combined with spread plate count method to measure the quantity of aerobic bacteria could not reflect the real status of aerobic bacteria in pits.