Dharmadasa R.M.
Herbal Technology Section, Industrial Technology Institute, Bauddhaloka Mawatha, Colombo 7, Sri Lanka
Hettiarachchi P.L.
Department of Biological Sciences, Faculty of Applied Sciences, Rajarata University of Sri Lanka, Mihintale,Sri Lanka
Premakumara G.A.S.
Herbal Technology Section, Industrial Technology Institute, Bauddhaloka Mawatha, Colombo 7, Sri Lanka