What is difference between lactic acid and lactose?

Answer 1

If we are talking about distinguishing between the two solutions then,

Carry out a Benedict's test on both solutions;

Results:

Lactose solution would give a brick-red/brown precipitate (positive test)

Sucrose solution would give negative test result while sucrose is a non-reducing sugar which does not react with Benedict's reagent.

Answer 2

Lactose and arctic acid are two quite different things.

Lactose is the sugar found in milk. Lactic acid is the result of bacteria breaking down and fermenting the lactose. As well as being found in yoghurt, it is also found in other foods such as bread and beer. Lactic acid is also an acid that builds up in the human body during times of strenuous activity.

If someone is lactose intolerant, the presence of lactic acid in food is unlikely to cause the same problems.

Answer 3

Lactose is a type of sugar found only in milk. Lactase is an enzyme found in the lining of the small intestine that allows the breakup of lactose into glucose and galactose.