JOURNAL 1325
Records of Natural Products
Year: 2020 Issue: 3 May-June
p.201 - 206
Viewed 1904 times.
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Pham H Ban
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Le Thi Huong
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Tran M Hoi
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Nguyen H Hung
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Le D Linh
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Do Ngoc Dai
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Isiaka Ajani Ogunwande
GRAPHICAL ABSTRACT
ABSTRACT
Herein, we report the results of our investigation on essential oils obtained by hydrodistilation of the leaves and fruits of Manglietia dandyi (Gagnep.) Dandy. The constituents of the oils were analyzed by gas chromatography-flame ionization detector (GC-FID) and gas chromatography-mass spectrometry (GC-MS). The yields of the oils were 0.25% and 0.21% (v/w, leaf and fruit respectively), calculated on a dry weight basis. The main constituents of the leaf oils were (E)-nerolidol (18.4%) and α-selinene (11.0%) while the fruit oils contained abundance of β-caryophylene (27.7%), d-cadinene (13.7%), α-humulene (13.2%) and α-copaene (11.6%). The results indicated that M. dandyi leaf oil exhibited 96% and 100% mortality towards the fourth-instant larvae of Aedes albopictus at 24 h at tested concentrations of 50 µg/mL and 100 µg/mL. The oil only displayed 100% mortality at concentrations of 50 and 100 µg/mL and under 48 h. The minimum lethal concentrations, LC50, were 29.57 mg/mL (24 h) and 29.02 mg/mL (48 h); while the LC90 values of 46.21 mg/mL and 42.29 mg/mL were obtained respectively at 24 h and 48 h mg/mL. The chemical constituents and larvicidal action of M. dandyi essential oils are being reported for the first time.
KEYWORDS- Manglietia dandyi
- essential oil
- sesquiterpenes
- larvicidal activity
- Aedes albopictus
