Our experimental work indicates that the best combination of mediums and methods so far developed for routine practice include lactose broth for the presumptive test, eosin methylene blue for the ...

In the presumptive test, 9 different tubes of lactose broth with 10 fold variations of the water sample are inoculated. If any lactose-fermenting bacteria grow and produce gas, the medium will turn ...

Note - broth tubes can be made containing sugars other than glucose (e.g. lactose and mannitol). Because the same pH indicator (phenol red) is also used in these fermentation tubes, the same results ...

Don’t use them for more than one hour in broth. With broths made and leaves falling, soup season is here, and these 12 dairy-free soup recipes are perfect for autumn and winter. All the recipes ...