Consulta: subjectFacets:"Chemical variability"
Registros recuperados: 2
Data/hora: 09/06/2024 06:17:34

Chemical diversity of the volatiles of Lippia rotundifolia Cham. (Verbenaceae) in Minas Gerais, Brazil
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: MEIRA,MESSULAN R.; MARTINS,ERNANE R.; FONSECA,FRANCINE S.A. DA.
Lippia rotundifolia is an aromatic species, native and endemic to rocky fields, which are isolated by small mountains. It is little known about their chemical composition. Because of that we aimed to study the chemical diversity of volatiles released from rosemary leaves (Lippia rotundifolia Cham.) coming from 11 populations of the Minas Gerais, Brazil. The material for chemical analysis was obtained from the accessions in the active germplasm bank of the Instituto de Ciências agrárias of the Universidade Federal de Minas Gerais. A total of 67 compounds were detected by HS-CG-MS. Most volatiles were detected in the São Gonçalo do Rio das Pedras accession, with 40 compounds, whereas in the Santana do Riacho accession only 5 compounds were detected....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical variability; Medicinal plant; Rosemary; Static headspace.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100618

Semi-volatile compounds variation among Brazilian populations of Ilex paraguariensis St. Hil.
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Cansian,Rogério Luis; Mossi,Altemir José; Mazutti,Márcio; Oliveira,José Vladimir; Paroul,Natalia; Dariva,Cláudio; Echeverrigaray,Sérgio.
The use of compressed carbon towards extracting semi-volatile compounds present in maté leaves (Ilex paraguariensis St. Hil.) is due to the growing interest in mate constituents to develop new products in the cosmetic, pharmaceutical and food industries. The objective of this work was to assess the chemical distribution of semi-volatile compounds in 20 native populations of maté collected all over Brazil. The extracts of bulk samples (30 plants) of each population were obtained by the high-pressure carbon dioxide extraction technique, and analyzed by GC/MSD. The quantification of compounds (caffeine, theobromine, phytol, squalene, vitamin E, eicosane, pentatriacontane, and stigmasterol) showed significant variations within the different populations and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maté; Chemical variability; Brazilian native populations; Supercritical extraction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100021