Abstract:

This work presents a comparative analysis of the volatile components in the leaves of Dysosma versipellis from
Yaorenshan and Maolan nature reserve in Guizhou province of China. The volatile components were extracted from the
leaves of D. versipellis by headspace solid phase microextraction, identified by GC-MS and quantified by the peak area
normalization method. The results showed that 39 compounds were extracted from the leaves of D. versipellis grown in
Yaorenshan, among which 31 compounds were identified, together accounting for 91.22% of the total volatile components,
and the predominant components included espatulenol (22.34%), β-terpinene (20.59%), limonene (10.47%), (1S)-α-pinene
(6.56%), (+)-ledene (4.52%), γ-muurolene (4.11%) and caryophyllene (3.22%). A total of 25 compounds were extracted
from D. versipellis in Maolan reserve, among which, 23 were identified and their relative contents accounted for 87.77%
of the total volatile components. The most abundant volatile components included dodecanal (15.58%), espatulenol
(13.63%), p-cymene (6.95%), γ-muurolene (4.89%), decanal (4.67%), undecanal (4.14%), d-cadinene (3.97%), α-cubebene
(3.91%), β-eudesmol (3.40%) and γ-elemene (3.24%). Eight compounds were common to both habitats, but there were large
differences in their relative contents. The differences in volatile components of D. versipellis may be closely associated with
producing area and growing environment.

Key words: Dysosma versipellis (Hance) M. Cheng ex Ying, volatile constituents, HS-SPME, GC-MS