Brilliant Green Bile for Coli‐Aerogenes Group Determinations

Current Research in Water Bacteriology

“…The use of brilliant green bile as a primary enrichment medium (3,4) is so well established that a discussion of its merits is unnecessary. Now that the mathematicians are appeased, there is nothing to prevent its continued use, provided the possible inhibitory action is recognized.…”

Relative Value of 2 Per Cent and 5 Per Cent Brilliant Green Bile Confirmatory Media

“…Dunham, McCrady, and Jordan (3) used 5 per cent B.G.B. as a confirmatory medium and found that: (1) its use eliminated the large number of Endo plates on which growth did not occur; (2) spore-forming organisms were eliminated; and (3) the per cent of brilliant green cultures to lactose broth cultures was 99.5 per cent. With the use of filtered water, filtered water after chlorination, and tap water, they noticed that the B.G.B.…”

Suggested Procedures for the Presumptive Test in the Determination of the Coli-Aerogenes Group

“…A parallel planting procedure designed to combine the advantages of the productivity of standard lactose broth with the restrictive qualities of brilliant green bile, by providing for the inoculation of tubes of each medium in parallel with duplicate portions of a sample, was suggested by Jordan.5 This procedure has been amplified by Jordan 6,7 in subsequent papers, and an interpretation of the sanitary significance of the results obtained based on a special arrangement of the coli-aerogenes group was suggested.…”