指示菌 meaning in English

indicator

Primary study on detecting residues of fungicides in food products with sensitive microorganisms as indicators
敏感指示菌用于农药残留检测初探
In the bioassay using saccharomyces cerevisiae as indicator , bl10 and bl19 were found unable to produce antibiotic fr - 008 while the other four had no detectable changes in productivity . obviously , the gene replacements happened in the 5 . 2kb + 7
在以啤酒酵母为指示菌的生物测定中，未观察到基因中断菌株bl14 、 bl15 、 bl16和bl17的产素表型的变化，而bl10 、 bl19以及所有的双交换菌株都丧失了产生fr - 008的能力。
The cultural conditions such as temperature , fermentation period and the compound of medium are studied . the result of test show that suitable factors for both bacterium to grow and active substance to produce are 28 , 200rpm and 72 hours . the bacterium is gotten through centrifuge with 8000rpm for 20min . then the bacteria is diluted and colophony named s - 8 is put into and used to absorbed active substance for 4 hours
对该菌株发酵条件的研究表明：该菌株用马铃薯葡萄糖液体培养基发酵培养， 28 ， 200rpm摇瓶中振荡培养72h可获得高活性的发酵产物，用苏云金芽孢杆菌hd - 1做指示菌，将发酵液稀释40倍生测仍可形成明显的抑菌圈。