This study aimed to authenticate the production season of Xinyang Maojian green tea, and screen and identify its characteristic components through non-targeted metabonomics methods based on two-dimensional fingerprints combined with chemometric analysis. Firstly, two-dimensional fingerprints of spring and autumn teas were obtained through HPLC-DAD analysis to form a three-dimensional array (retention time × absorption wavelength × sample). Subsequently, the multiple co-elution peaks and spectral profiles in two-dimensional HPLC-DAD fingerprin...
