Figure 1From: 2,2-Diphenyl-1-picrylhydrazyl as a screening tool for recombinant monoterpene biosynthesisThe DPPH reaction and monoterpene compounds examined in this study. DPPH exhibits strong absorbance at 517 nm (purple) which decreases proportionately with the loss of its radical (A). The chemical structures of monoterpene compounds (+)-limonene (B), γ-terpinene (C), myrcene (D), and β-pinene (E) are shown.Back to article page