The application note 'Direct, Rapid Analysis of Orange Peel using the ASAP Ion Source' from Agilent Technologies details analysis of contaminants from orange peel.
The 'Analysis of Nepetalactone in Catnip Leaf by ASAP' application note from M&M Mass Spec Consulting LLC shows how the ASAP® probe can be a useful tool to examine changes in biological samples.
Catnip leaves