Abstract
Experimental studies were made on various media for the detection and counting of lactic bacteria in fermented milk and acid milk drink. The results obtained are summarized as follows.
follows. 1) Tomato juice agar, lactic agar, and plate count agar had excellent qualities for the detection and counting of lactic bacteria.When materials contained bacilli and cocci, it was difficult to make differential count macroscopically.
2) Lactic streptococci developed selectively on Delta's fuchsin lactose agar.The growth of lactic bacilli and other bacteria was controlled on this medium.
In conclusion, it is recommended that tomato juice agar, lactic agar, and plate count agar be used for counting total lactic bacteria and that Delta's fuchsin lactose agar be employed to distinguish bacilli from cocci
