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Chemical compositions and bioefficacy against Spodoptera litura of essential oil and ethyl acetate fraction from Myoporum bontioides leaves
Author(s) -
Minh Tran Thi,
Ngoan Tran Thi,
Thuong Nguyen Thi Minh,
Toan Ho Khanh,
Truong Nguyen Xuan,
Huong Tran Thu,
Ly Giang Thi Phuong,
Ai Doan Thi Thuy,
Khanh Nguyen Duc
Publication year - 2020
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201900086
Subject(s) - spodoptera litura , ethyl acetate , chemistry , fraction (chemistry) , essential oil , bioassay , chromatography , food science , botany , biology , lepidoptera genitalia , genetics
Essential oil of fresh leaves from Myoporum bontioides A. Gray was analyzed by GC–MS. A total of nine components were identified in this volatile oil with epingaione (81.52 %) as a main constituent. Three flavonoids named isorhamnetin ( 1 ), 3,4’‐dimethoxy‐3’,5,7‐trihydroxyflavone ( 2 ) and luteolin ( 3 ) were isolated from the ethyl acetate fraction of Myoporum bontioides A. Gray leaves. Their structures were elucidated on the basis of spectroscopic data and by comparison with their spectral data reported in literature. The essential oil and ethyl acetate fraction from the leaves of this species expressed the toxicity to Spodoptera litura. In the antifeedant bioassay more than 50 % insects were killed after 48 h at 1.6 % and 4.0 % concentrations of the essential oil and ethyl acetate fraction, respectively.