Which option is NOT a method of amylase determination?

• A. Turbidimetric
• B. Amyloclastic
• C. Saccharogenic
• D. Chromogenic

Answer: (A)

Amylase activity is measured by signals that directly reflect starch breakdown or its products. Amyloclastic methods track the decrease of the starch-iodine complex as starch is hydrolyzed. Saccharogenic methods quantify the reducing sugars produced by amylase action on starch. Chromogenic methods use a substrate that releases a colored product when cleaved by amylase. Turbidimetric approaches, while possible in theory, are not standard for amylase determination because changes in turbidity can arise from many nonenzymatic factors in a sample and don’t give a specific, reliable readout of starch digestion. Therefore, the turbidity-based method isn’t used as a routine amylase assay.