title: Volatile constituents of Festuca nigrescens, Phleum alpinum and Poa alpina from N. W. Italian Alpine pastures.
abstract: The composition of the volatile fractions of three important grasses from sub-alpine N.W. Italian pastures, namely Festuca nigrescens Lam. non Gaudin (chewing fescue), Phleum alpinum L. (alpine timothy) and Poa alpina L. (alpine bluegrass) was investigated. The fresh aerial parts were collected at the flowering stage during the summer season. The volatile oils obtained from green tissues by steam distillation in a Clevenger-type apparatus, were analyzed by GC/FID and GC/MS. The oil yield was 0.04 +/- 0.01% weight/fresh weight bases for each of the investigated species. Several classes of compounds were found in the volatile fractions, including aldehydes, alcohols, acids, hydrocarbons, esters, ketones, terpenes, and phenolics. Qualitative and quantitative differences were observed.
authors.affiliation: CRA-FLC Centro di Ricerca per le Produzioni Foraggere e Lattiero Casearie, viale Piacenza 29, 26900 Lodi, Italy. aldo.tava@entecra.it
authors.forename: Aldo
authors.initials: A
authors.lastname: Tava
authors.forename: Roberto
authors.initials: R
authors.lastname: Cecotti
authors.forename: Maris
authors.initials: M
authors.lastname: Grecchi
authors.forename: Luca
authors.initials: L
authors.lastname: Falchero
authors.forename: Mauro
authors.initials: M
authors.lastname: Coppa
authors.forename: Giampiero
authors.initials: G
authors.lastname: Lombardi
mesh_terms: D031751:Festuca / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D009822:Oils, Volatile / Q000032:analysis*; D031784:Phleum / Q000737:chemistry*; D031785:Poa / Q000737:chemistry*
chemical_list: D009822:Oils, Volatile