Thai Species: Antioxidant and Bioactive Compounds.

For the functional food applications, antioxidant properties and the bioactive compounds of the 23 species commercially cultivated in Thailand were studied. Total phenolic content and DPPH radical scavenging activity were determined. The concentrations of eight bioactive compounds, including curcumin (), demethoxycurcumin (), bisdemethoxycurcumin (), 1,7-diphenyl-(4,6)-4,6-heptadien-3-ol (), germacrone (), furanodienone (), zederone (), and -turmerone (), were determined from the by HPLC.