Table 1.

The names of three plant extracts and other research references, therapeutic use in Thai traditional medicine screened in this study

Species [Voucher number]	Family (Common name English/Thai)	Reported major constituents	Therapeutic use in Thai traditional medicine	Edible part	Ref.
Syzygium gratum (Wight) S.N. Mitra var. Gratum [Ch. Laongpol 6]a,c	Myrtaceae (Eugenia/Phak Mek, Samet chun)	Not yet clearly determined in chemical structure but proved to be strong in antioxidants and the prevention of oxidative and nitrosative stresses	Treatment of dyspepsia and indigestion	Leaves	22,23
Justicia gangetica L. [TK-PSKKU-0066]b	Acanthaceae (Chinese violet, tropical primrose/Accepted name: Asystasia gangetica )	5,11-epoxymegastigmane glucoside (asysgangoside), salidroside, benzyl β-d-glucopyranoside, (6S,9R)-roseoside, ajugol, apigenin 7-O-β-d-glucopyranoside, apigenin 7-O-neohesperidoside, and apigenin 7-O-β-d-glucopyranosyl (1→6)-β-d-glucopyranoside	Treatment of stomach pain, stomach worms, anti-asthma	Leaves	24,25
Limnocharis flava L. Buchenau [Patt. 173]c	Limnocharitaceae (yellow velvetleaf, yellow burr head/Talabhat reusi)	Undetermined	Appetizer	Stem	26

^aVoucher specimens deposited at the Forest Herbarium (BKF), Department of National Park, Wildlife and Plant Conservation, Ministry of Natural Resource, ^bthe Herbarium of the Faculty of Pharmaceutical Sciences, Khon Kaen University and ^cthe Prince of Songkla University herbarium (PSU), Department of Biology, Faculty of Science, Prince of Songkla University, Thailand.