title: Compositional and Enantiomeric Analysis of the Essential Oil of Taxodium distichum from India.
abstract: The leaf essential oil composition of Taxodium distichum L., collected from the foothills of Uttarakhand, India was analyzed using gas chromatography-flame ionization detection (GC-FID) and gas chromatography-mass spectrometry (GC-MS) equipped with DB-5 (5% diphenyl-95% dimethyl polysiloxane) and β-cyclodextrin (6-tertiarybutyldimethylsiliyl-2,3-diethyl-β-cyclodextrin) capillary columns. Seventeen constituents, representing 90.3 to 99.4% of composition were identified in the essential oils from different seasons, viz. spring, summer, rainy, autumn and winter. The essential oil composition was mainly dominated by monoterpene hydrocarbons, represented mainly by α-pinene (81.9-94.3%). Other constituents of the oil were myrcene (0.5-4.7%), β-pinene (2.2-2.9%), limonene (0.5-1.5%), camphene (≤ 0.03-1.5%), and α-terpineol (upto 1.6%). Chiral analysis of T. distichum essential oil on an ethyl substituted β-cyclodextrin capillary column revealed the presence of a-pinene in racemic form, with an enantiomeric ratio of 49.3% for (1R)-(+)- and 50.7% for (1S)-(-)-α-pinene.
authors.forename: Rajendra C
authors.initials: RC
authors.lastname: Padalia
authors.forename: Ram S
authors.initials: RS
authors.lastname: Verma
authors.forename: Amit
authors.initials: A
authors.lastname: Chauhan
authors.forename: Prakash
authors.initials: P
authors.lastname: Goswami
authors.forename: Chandan S
authors.initials: CS
authors.lastname: Chanotiya
mesh_terms: D007194:India; D009822:Oils, Volatile / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D032489:Taxodium / Q000737:chemistry*
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils