“RAPID INVESTIGATION OF THE METABOLITE CONTENT IN HIBISCUS SABDARIFFA var. UKMR-2 CULTIVATED UNDER THE INFLUENCE OF ELEVATED CO2 USING TRI-STEP FT-IR SPECTROSCOPY ” (2020) Jurnal Teknologi, 83(1), pp. 75–83. doi:10.11113/jurnalteknologi.v83.14825.