Method for rapidly detecting content of water-soluble protein peptide

The invention relates to the field of rapid food detection, in particular to a method for rapidly detecting the content of water-soluble protein peptide, which comprises the following steps: step 1, measuring the diopter of a sample with known water-soluble protein peptide content, and establishing a diopter-water-soluble protein peptide content standard curve; 2, detecting the diopter of the substance to be detected; and 3, substituting the diopter into the standard curve obtained in the step 1 to obtain the content of the water-soluble protein peptide in the substance to be detected. According to the method for rapidly detecting the water-soluble protein peptide provided by the invention, the diopter obtained by adopting the refractometer is associated with the content of the water-soluble protein peptide, the operation is simple, the waiting time is short, the result can be obtained by only 10 seconds to 5 minutes, and a support is provided for rapidly obtaining the content of the water-soluble protein pep