Firstly, I think you phrased this question wrong because lactose is a substrate. It is the job of lactase (and enzyme) to break down lactose. Some people are lactose intolerant because their bodies do not have enough lactase enzymes to break down lactose.
to differentiate between the lactose fermented bacteria or non- lactose fermented bacteria
No Proteus Vulgaris does not ferment lactose
Lactase is an enzyme, it wraps around the lactose (the part that wraps around the lactose is known as the active site) substrate and cuts it up into smaller pieces galactose and glucose
these are those bacteria which are not able to ferment lactose sugar hence are called non lactose fermenting or negative lactose fermenting organisms.
If there is no way that lactose can be omitted from your diet the only other solution is to pair your lactose intake with a lactose additives, which can be purchased at most drug stores.
LACTOSE sugar
lactose
Cola is lactose free it has no lactose it has glucose in it !
to differentiate between the lactose fermented bacteria or non- lactose fermented bacteria
Lactose intolerant individuals can consume lactose, but it must be consumed in moderation.
Lactase is the enzyme that breaks down lactose.
No Proteus Vulgaris does not ferment lactose
No, Lactose consists of sugars.
Lactose is a type of sugar.
lactose
Lactose is also called "milk sugar" because it comes from milk. Think LACTose, like in lactate, lactation, etc.
Milk naturally contains the sugar lactose. Lactose-free milk is made by 'pre-digesting' the lactose in the milk. This is done by adding the enzyme lactase to the milk. The enzyme breaks down the lactose and people who can't digest lactose properly (lactose intolerance) can drink the milk without side-effects.