title: Phytochemical investigation and antifeedant activity of Premna latifolia leaves.
abstract: The essential oil of Premna latifolia Roxb. was obtained by hydrodistillation of fresh leaves of the plant having an oil yield of 0.05%, both non-polar and essential oil were analysed by GC and GC-MS. Hexane fraction of the leaves of P. latifolia was transesterified and analysed by GC and GC-MS, 40 non-polar components were identified comprising 89.3%. The most abundant fatty acid constituents were hexadecanoic acid (25.04%), 8,11,14-docosatrienoic acid (13.62%), octadecanoic acid (6.82%), 9,12-octadecadienoic acid (4.19%) and 29 components were investigated in the essential oil which comprises 78.1%. The most abundant oil constituents were 1-octen-3-ol (35.69%), terpendiol II (7.19%), δ-guaiene (7.49%) 2-undecanone (4.80%) and α-pinene (3.27%). Different extracts were also tested against polyphagous crop pest Spodoptera litura for antifeedant activity. Essential oil showed maximum growth reduction of 56.83% followed by chloroform extract of 43.93%.
authors.affiliation: Department of Chemistry , HNB Garhwal University, PO Box 75, Srinagar (Garhwal) 246174, Uttarakhand, India.
authors.forename: Ashok
authors.initials: A
authors.lastname: Kumar
authors.forename: Mahendra
authors.initials: M
authors.lastname: Lal Tamta
authors.forename: Nisha
authors.initials: N
authors.lastname: Negi
authors.forename: K
authors.initials: K
authors.lastname: Chandrasekhar
authors.forename: Devendra
authors.initials: D
authors.lastname: Singh Negi
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D005227:Fatty Acids / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D006586:Hexanes; D007194:India; D007814:Larva / Q000187:drug effects / Q000254:growth & development; D009822:Oils, Volatile / Q000032:analysis* / Q000494:pharmacology; D019308:Palmitic Acid / Q000032:analysis / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry*; D018411:Spodoptera / Q000187:drug effects / Q000254:growth & development; D013229:Stearic Acids / Q000032:analysis / Q000302:isolation & purification; D029648:Verbenaceae / Q000737:chemistry*
chemical_list: D005227:Fatty Acids; D006586:Hexanes; D009822:Oils, Volatile; D013229:Stearic Acids; D019308:Palmitic Acid; C031183:stearic acid