Rapid geographical origin identification and functional compound content prediction of Chrysanthemum (“Gongju”) using excitation–emission matrix fluorescence spectroscopy coupled with chemometrics - Xue Guo; Youyou Wang; Ruibin Bai; Yao Chen; Siman Wang; Hui Wang; Yutong Hua; Tong Wang; Jian Yang (Food Chemistry, 2025)