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QuantiChrom™ α-Amylase Assay Kit


  • For quantitative determination of α-amylase activity in biological samples

Key Features

  • Safe. Non-radioactive assay.
  • Sensitive and accurate. Linear detection range of 0.2 – 100 U/L α-amylase in a 96-well plate assay.
  • Convenient and high-throughput. Homogeneous “mix-incubate-measure” type assay. Can be readily automated to assay thousands of samples per day.


  • OD405nm


  • Biological samples


  • All


  • 20 min


  • 100 tests in 96-well plate

Detection Limit

  • 0.2 U/L

Shelf Life

  • 6 months

More Details

α-AMYLASE (EC belongs to the family of glycoside hydrolase enzymes that break down starch into glucose molecules by acting on α-1,4-glycosidic bonds. The α-amylases cleave at random locations on the starch chain, ultimately yielding maltotriose and maltose, as well as glucose and “limit dextrin” from amylose and amylopectin. In mammals, α-amylase is a major digestive enzyme. Increased α-amylase levels in humans are associated with salivary trauma, mumps due to inflammation of the salivary glands, pancreatitis and renal failure. Simple, direct and automation-ready procedures for measuring amylase activity are very desirable. BioAssay Systems’ QuantiChrom™ α-Amylase Assay Kit provides a convenient colorimetric method to measure α-amylase activity in biological samples. In this assay, α-amylase hydrolyzes a synthetic substrate to release 2-chloro-4-nitrophenol. The rate of formation of the 2-chloro-4-nitrophenol, measured at 405 nm, is directly proportional to the enzyme activity.

Does this kit come with α-amylase?

This kit does not come with α-amylase. Instead, the customer will need to purchase their own enzyme if desired. The following protocol is optimized for porcine α-amylase from Calzyme (Cat #146A0100).

How is the standard curve used to quantify α-amylase in the sample?

The mechanism of this kit is based on the reaction of α-amylase with a synthetic substrate to yield a 2-chloro-4-nitrophenol product that is measurable at OD405nm. The nitrophenol standard is measured similarly to the product of the reaction and is therefore proportional to the concentration of product released.

I know that α-amylase and α-glucosidase are both necessary to digest starch and other carbohydrates into glucose. Does this kit require the use of α-glucosidase when reacting with the synthetic substrate?

The synthetic substrate is specific to α-amylase and should not require the use of α-glucosidase nor see interference from it.

For more detailed product information and questions, please feel free to email or call us at 1-510-782-9988 x 2. For more general information regarding our assays, please refer to Technical Support.

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If you or your labs do not have the equipment or scientists necessary to run this assay, BioAssay Systems can perform the service for you.

– Fast turnaround
– Quality data
– Low cost

Please email or call 1-510-782-9988 x 2 to discuss your projects.

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For bulk quote or custom reagents, please email or call 1-510-782-9988 x 1.

Orders are shipped the same day if placed by 2pm PST
Shipping: RT
Delivery: 2-6 days (US), 6-15 days (intl)
Storage: -20°C upon receipt.

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