Tracing the geographical origin of tiger nut (Cyperus esculentus L) in China based on stable isotopes and mineral elements combined with multi-modal recognition

Key Points

• Geographical origin of tiger nut is determined through stable isotopes and mineral elements, providing insights into its origins.
• The study indicates distinct isotopic signatures associated with different growth regions of Cyperus esculentus.
• Analysis utilized multi-modal recognition methods to enhance the reliability of origin tracing in agricultural settings.
• Results support improved agricultural practices and biodiversity conservation of tiger nut cultivation.