Cinnamomum osmophloeum ct. linalool is one of the chemotypes of the indigenous cinnamon in Taiwan. In this study, hydrodistillation was used for extracting the essential oils (EOs) of
C. osmophloeum ct. linalool leaves collected from various plants
and seasons,
and GC-MS
and GC-FID were used to examine variations
and contents of the chemical composition in EOs. Moreover, the absolute configuration of the main constituent
and its EO content were illustrated by GC-FID with a chiral column. In addition, we also investigated the effect of the extraction time (1, 2, 6,
and 10 h) on the yield of EO
and the contents of the main constituents. Results from this study revealed that the average EO yield of 12 plants was 3.7%,
and linalool accounted for more than 90%. The linalool in the EO was proved to be pure
S-(+)-linalool,
and its content in the leaves ranged from 28.8 卤 0.3 to 35.1 卤 0.2 mg/g. Furthermore, there were no obvious differences in EO yield
and S-(+)-linalool content from various plants
and seasons. On the other h
and, we also demonstrated that EO
and S-(+)-linalool from
C. osmophloeum ct. linalool leaves can be completely extracted out by 1 h of hydrodistillation.
Keywords:
Cinnamomum osmophloeum ct. linalool;
leaf;
essential oil;
GC-MS;
GC-FID;
absolute configuration;
S-(+)-linalool