title: Chemical composition and antibacterial activity of rhizome oils from five Hedychium species.
abstract: The essential oils from rhizomes of five Hedychium species, H. coronarium, H. neocarneum, H. flavescens, H. speciosum and H. stenopetalum (Zingiberaceae), were obtained by hydrodistillation and analyzed by capillary GC and GC/MS. Sixty components were identified and percentage oil yields from the fresh plants ranged from 0.06-0.17 % (v/w). All rhizome oils were rich in terpenes, especially monoterpenes (75.0-95.9 %). The most common compounds in the rhizome oils of Hedychium were beta-pinene, linalool and 1,8-cineole. The essential oils were tested against four bacterial strains. They showed moderate to weak activity against Gram-positive bacteria (inhibition zone 25-13 mm, MIC 0.3-8.3 mg/mL, MBC 0.6-8.3 mg/mL).
authors.affiliation: Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
authors.forename: Ratchuporn
authors.initials: R
authors.lastname: Suksathan
authors.forename: Siriwoot
authors.initials: S
authors.lastname: Sookkhee
authors.forename: Somboon
authors.initials: S
authors.lastname: Anuntalabhochai
authors.forename: Sunee
authors.initials: S
authors.lastname: Chansakaow
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D039821:Monoterpenes / Q000032:analysis; D009822:Oils, Volatile / Q000032:analysis / Q000494:pharmacology*; D027343:Rhizome / Q000737:chemistry*; D030521:Zingiberaceae / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D039821:Monoterpenes; D009822:Oils, Volatile