Both food poisoning and lactose intolerance can cause stomach pain So how do you find out the exact cause Here’s what an ...

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 ...

coconut milk can replace broth. It adds a rich, slightly sweet flavor, particularly suitable for curries and certain soups. Coconut milk also provides a dairy-free alternative for those with ...

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 ...