Soil Neutral Protease Activity Assay kit

Soil protease is involved in the conversion of amino acids, proteins and other organic compounds containing protein nitrogen in the soil, and its hydrolysate is one of the nitrogen sources of higher plants. S-NPT catalyzes protein hydrolysis in a neutral environment, which is related to the content of soil organic matter, nitrogen and other soil properties.

S-NPT can hydrolyze casein to produce tyrosine under neutral conditions; under alkaline conditions, tyrosine reduces phosphomolybdic acid compounds to produce tungsten blue; there is a characteristic absorption peak at 680nm.