Chemical composition and anti-inflammatory activity of the essential oil from the leaves of Limnocitrus littoralis (Miq.) Swingle from Vietnam
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The oil from the leaves of Limnocitrus littoralis (Miq.) Swingle was obtained by hydrodistillation and investigated by gas chromatography combined with mass spectrometry (GC/MS), the anti-inflammatory effect of the oil was examined on a LPS-induced RAW264.7 cells. An aggregate of forty components were identified, representing 93.0% of the oil. This oil was subjugated by monoterpene hydrocarbons (27.7%), sesquiterpene hydrocarbons (32.3%) and oxygenated sesquiterpenes (4.6%). The significant constituents of L. littoralis essential oil were determined as follows; myrcene (24.9%), γ–muurolene (11.0%), and oleic acid (10.3%). The essential oil of L. littoralis showed activity against the nitric oxide (NO) generation with the IC50 value to 12.50 ± 1.19 µg/L. The anti-inflammatory effect of essential oil from the leaves of L. littoralis is reported for the first time.