Thành phần hóa học tinh dầu và hoạt tinhd kháng muỗi của tinh dầu từ lá của loài Litsea umbellata và Litsea iteodaphne
Tác giả: Do N. Dai, Nguyen D. Hung, Nguyen T. Chung, Le T. Huong, Nguyen H. Hung, Isiaka A. Ogunwande
Tạp chí tinh dầu thực vật
Quyển: 23:6 Trang: 1334-1344
Năm xuất bản: 1/2021
Tóm tắt
The chemical constituents of hydrodistilled essential oils from the leaves of Litsea umbellata
(Lour.) Merr. and Litsea iteodaphne (Ness) Hook. f. growing wild in central Vietnam and mosquito larvicidal
activity of these oils against laboratory-reared larvae of Culex quinquefasciatus and Aedes albopictus were investigated. The major constituents mostly terpenes (percentage abundance, respectively) of the oils were β-
pinene (18.8 % and 6.6 %), β-caryophyllene (16.2 % and 21.4 %), α-pinene (10.4 % and 8.7 %) and germacrene
D (9.1 % and 15.5 %). The oil of L. umbellata displayed larvicidal activity against Cx. quinquefasciatus with
LC
50 of 36.19 μg/mL at both 24 h and 48 h, while LC50of 40.09 μg/mL and 27.33 μg/mL at 24 h and 48 h respectively, were exhibited towards Ae. albopictus. Also, an LC90 value of 54.17 μg/mL was obtained against Cx.
quinquefasciatus at both 24 h and 48 h, while values of 68.79 and 60.49 μg/mL respectively, were recorded
against Ae. albopictus at 24 h and 48 h. Moreover, the oil of L. iteodaphne exhibited activity against Cx.
quinquefasciatus with LC50of 37.20 μg/mL (24 h) and 20.21 μg/mL (48 h) while LC90 values were 39.27 μg/mL (24
h) and 23.78 μg/mL (48 h). Furthermore, L. iteodaphne oil displayed larvicidal activity against Ae. albopictus
with LC
50 values of 40.04 μg/mL (24 h) and 16.63 μg/mL (48 h) as well as LC90values of 42.40μg/mL (24 h) and
23.64 μg/mL (48 h). This is the first report on the chemical composition and larvicidal activity of L. umbellata
and L. iteodaphne essential oils.
Từ khóa
Litsea umbellata, Litsea iteodaphne, essential oil composition, terpene, larvicidal activity