Houttuynia cordata Thunb.  decanal (3.4−8.9%), decanol (up to 7.0%), 2−undecanone (23.0−36.1%), decanoic acid (1.4−6.3%), dodecanal (up to 7.3%), and 2−tridecanone (2.6−5.6%)  Influenza type A (H1N1)  48  [54]