GABA enzymatic assay kit

Area of Science:

• Biochemistry
• Enzymology
• Analytical Chemistry

Background:

• Quantification of 4-aminobutyric acid (GABA) is crucial for agricultural and food science.
• Existing methods for GABA measurement can be complex and time-consuming.

Purpose of the Study:

• To develop a simple and accurate enzymatic assay for quantifying GABA.
• To validate the assay's performance for on-site measurement in agricultural products.

Main Methods:

• A three-enzyme system was constructed, combining GABA aminotransferase, glutamate oxidase, and peroxidase.
• GABA-dependent dye formation was utilized for quantification.
• A pretreatment mixture was employed to remove inhibitory substances from samples.

Main Results:

• The assay accurately quantifies GABA in the range of 0.2 - 150 mg/L.
• Results obtained using the assay kit closely matched those from liquid chromatography-tandem mass spectrometry.
• The assay was successfully applied to measure GABA content in tomato samples.

Conclusions:

• The developed enzymatic assay provides an easy and accurate method for GABA quantification.
• The assay kit is a promising tool for on-site measurement of GABA in agricultural products.
• This method simplifies GABA analysis, facilitating broader application in food and agricultural research.