*2.2. Leaf Samples*

Fresh green leafy vegetable samples, *Cassia auriculata* L. ('Ranawara'), *Olax Zeylanica* ('mella'), *Centella asiatica* ('gotukola'), *Gymnema lactiferum* ('kuringan'-Ceylon cow tree), *Sesbania grandiflora* ('kathurumurunga') and *Passiflora edulis* ('passion fruit') were collected locally from the Negombo and Makandura areas of Sri Lanka, and they were cleaned and subjected to cooking treatments. Voucher plant specimens from each leafy vegetable collected were deposited in a herbarium.
