An important strategy to control hyperglycemia and diabetes is through the inhibition of key carbohydrates digesting enzymes such as α-amylase and α-glucosidase, which also play a vital role in preventing diabetic complications. The inhibitors of these enzymes delay the digestion of carbohydrates, therefore, reduce the rate of glucose absorption from the small intestinal tract, as well as reduce postprandial blood glucose level. Thus, inhibition of α-amylase and α-glucosidase is a key in the management and treatment of hyperglycemia and Diabetes.

Hope it is clear now and for more information you can check these articles:

Article In vitro α-amylase and α-glucosidase inhibitory effects and ...

Article In vitro evaluation of the α-glucosidase inhibitory potentia...

Dear Dr Binte Naeem,

The protocols found in this article (in attached) may also help you.

Best wishes,

Sabri

Check https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/s12906-016-1085-1

https://bmcchem.biomedcentral.com/articles/10.1186/s13065-018-0445-y

Also check https://www.mdpi.com/2076-3921/8/10/421/htm

https://www.sciencedirect.com/science/article/pii/S2225411017301268

Kindly check this paper

https://www.mdpi.com/1424-8247/15/1/65/pdf

https://doi.org/10.3390/biom9100551

https://journals.sagepub.com/doi/pdf/10.1177/1934578X1300800924

https://doi.org/10.5455/njppp.2017.7.1235104012017

https://www.academia.edu/9845942/A_review_on_medicinal_plants_with_antidiabetic_activity

Good luck.