Daqu category judgment model, construction method thereof and Daqu category judgment method

The invention provides a method for constructing a yeast category judgment model, which comprises the following steps: three groups of yeast powder samples to be detected are obtained, all yeast powder samples to be detected in each group of yeast powder samples to be detected belong to the same high-temperature yeast category, and the yeast categories of any two groups of yeast powder samples to be detected are different; detecting the moisture content in all the to-be-detected yeast powder samples; obtaining Maillard reaction information of all the to-be-detected yeast powder samples, wherein the Maillard reaction information comprises amino acid content information and flavor substance content information; the method comprises the following steps: respectively removing the moisture content in all to-be-detected yeast powder samples from the amino acid content information and flavor substance content information of the to-be-detected yeast powder samples to form a first data set, and carrying out orthogonal