FIG. 1.

Representative structural formulae of the monoterpenoids used. 1, (R)-(+)-limonene; 2, (+)-limonene oxide; 3, (+)-α-pinene oxide; 4, α-pinene; 5, (−)-β-pinene; 6, γ-terpinene; 7, α-terpinene; 8, α-terpineol; 9, β-myrcene; 10, linalool.