How can we differentiate beta amylase from alpha amylase?

Sure, here are the steps to differentiate beta amylase from alpha amylase:

1. Source: Alpha amylase is mainly produced in the pancreas and salivary glands in humans, while beta amylase is found in bacteria, fungi, and plants, especially in the seeds.

2. Action: Alpha amylase breaks down starch into maltose and limit dextrin by cleaving the 1,4 glycosidic linkages. On the other hand, beta amylase acts on the non-reducing end of the polysaccharide chain, releasing maltose units.

3. Optimum pH: Alpha amylase works best at a neutral pH (around 7), while beta amylase has an optimum pH of 4-5, which is slightly acidic.

4. Temperature: Alpha amylase has an optimum temperature of 37 degrees Celsius, which is the human body temperature. Beta amylase works best at a temperature of 60-65 degrees Celsius.

5. Product: Alpha amylase produces maltose and limit dextrin, while beta amylase produces maltose only.

6. Inhibition: Alpha amylase is inhibited by heavy metals and inorganic phosphate. Beta amylase is inhibited by its product, maltose.

By comparing these characteristics, you can differentiate between alpha and beta amylase.