Elucidating the metabolic dynamics and aroma formation mechanisms of sun-exposed versus rain-soaked fresh tea leaves during Wuyi rock tea processing via GC–MS and LC-MS-based untargeted metabolomics - Jianfeng Huang; Xiaoyan Lu; Haoran Chen; Qinghua Yao; Hang Wei; Shaoxiao Zeng; Hui Xu (Food Chemistry, 2026)