Unraveling the spatial chemical heterogeneity of Lentinula edodes: Integrative metabolomics and machine learning for cultivar and origin classification - Shenglong Lu; Chaoyi Shen; Ben Niu; Ruiling Liu; Huizhi Chen; Hangjun Chen; Xiangjun Fang; Lishu Wang; Ming Yin; Weijie Wu; Haiyan Gao (Food Chemistry, 2026)