Research Article

Chemical Composition, Antibacterial, and Anti-Inflammatory Activities of Essential Oils from Flower, Leaf, and Stem of Rhynchanthus beesianus

Table 1

Chemical composition of R. beesianus F-EO, L-EO, and S-EO.

CompoundsaRIbRIc% areaIdentificationd
F-EOL-EOS-EO

Octane8008000.1tre0.1MS, RI
cis-3-Hexen-1-ol8578500.5MS, RI
Ethylbenzene855863treMS, RI
m-Xylene8668710.1MS, RI
o-Xylene8879000.1MS, RI
Tricyclene9259260.10.2treMS, RI
α-Thujene9299280.1treMS, RI
α-Pinene9379373.14.30.6MS, RI
Camphene9529524.57.80.8MS, RI
Sabinene9749760.40.20.2MS, RI
β-Pinene9799822.00.90.4MS, RI
β-Myrcene9919915.40.70.4MS, RI
α-Phellandrene100510080.20.1treMS, RI
α-Terpinene101710200.1treMS, RI
p-Cymene102310270.10.10.1MS, RI
Limonene103010314.72.81.7MS, RI
1,8-Cineole1032103521.612.121.3MS, RI
cis-Ocimene103810370.3MS, RI
α-Ocimene104710472.0tre0.1MS, RI
γ-Terpinene106010610.10.10.1MS, RI
cis-4-Thujanol107010690.1tre0.2MS, RI
cis-Linalool oxide107410740.0MS, RI
Terpinolene108810920.1tretreMS, RI
Linalool109911013.41.02.4MS, RI
trans-Verbenol114411480.1MS, RI
Camphor114511490.30.60.1MS, RI
Camphene hydrate114811530.1MS, RI
Borneol116711719.713.222.5MS, RI
Terpinen-4-ol117711810.30.30.3MS, RI
α-Terpineol119011941.50.91.9MS, RI
Bornyl formate1226123421.733.911.6MS, RI
Isobornyl formate12321240tre0.1treMS, RI
Carvone12421248treMS, RI
Isopentyl hexanoate125212500.10.0MS, RI
Bornyl acetate128412902.36.23.9MS, RI
γ-Pyronene133813420.10.1MS, RI
Daucene13811385treMS, RI
β-Elemen139413950.1tre0.1MS, RI
Methyleugenol140214077.78.014.6MS, RI
α-Gurjunene14091417tre0.1MS, RI
Caryophyllene141914271.50.30.8MS, RI
Aromandendrene144014560.1MS, RI
cis-β-Farnesene144514590.1MS, RI
Humulene145414610.20.1MS, RI
epi-β-Caryophyllene146614690.10.10.1MS, RI
α-Curcumene148314870.30.20.6MS, RI
Methylisoeugenol149214991.11.12.0MS, RI
Bicyclogermacrene149915040.61.00.7MS, RI
β-Bisabolene150915130.10.10.2MS, RI
Sesquicineole15161519treMS, RI
δ-Cadinene152415290.20.20.5MS, RI
2-(4-Ethenyl-4-methyl-3-prop-1-en-2-ylcyclohexyl)propan-2-ol154915550.1MS, RI
Nerolidol156415670.1tre0.1MS, RI
Palustrol15681577treMS, RI
Germacren D-4-ol157415830.2MS, RI
Spathulenol157615860.30.91.1MS, RI
Caryophyllene oxide158115920.70.30.4MS, RI
Ledol160716120.1MS, RI
Isospathulenol163816460.2MS, RI
β-Eudesmol164916600.1MS, RI
α-Cadinol165316630.10.1MS, RI
Ambrial180918150.70.10.5MS, RI
Hexahydrofarnesyl acetone18441850treMS, RI
Isophytol194819530.1MS, RI
Pimaradiene199619900.20.11.0MS, RI
(E)-15,16-Dinorlabda-8 (17),11-dien-13-one199420091.6MS, RI
Geranyl linallol203420390.2MS, RI
Abietatriene205420860.1MS, RI
Phytol211421220.5MS, RI
Coronarin E213621590.3MS, RI
Tricosane230022990.4MS, RI
Pentacosane250024980.1MS, RI
Total98.698.796.0

aCompounds were listed in the order of their elution on the HP-5MS column. bRetention index (RI) on the HP-5MS column, using a homologous series of n-alkanes (C8–C30) as references. cRI in Wiley 275 and NIST 17 mass spectral libraries. dIdentification: MS by comparison with Wiley 275 and NIST 17 mass spectrum libraries; RI by comparison of retention index with those reported in NIST 17 and Wiley 275 libraries. -: not detected. etr: trace ().