Consulta: creatorFacets:"Rossato,Marcelo"
Registros recuperados: 6
Data/hora: 09/06/2024 11:46:07

Caracterização cariológica de palmeiras do gênero Butia (Arecaceae)
Provedor de dados: 94
Autores: Corrêa,Lauís Brisolara; Barbieri,Rosa Lía; Rossato,Marcelo; Büttow,Miriam Valli; Heiden,Gustavo.
O butiá é um fruto nativo muito consumido no Sul do País, sendo comum encontrá-lo como frutífera cultivada. no Rio Grande do Sul, ocorrem cinco espécies de palmeiras deste gênero. o número cromossômico de Butia eriospatha e de B. odorata é descrito pela primeira vez. B. capitata e B. yatay tiveram seu número cromossômico descrito anteriormente, apesar de seu cariótipo nunca ter sido reportado antes, e B. paraguayensis não concordou com a contagem anterior. Este trabalho teve como objetivo analisar as características cromossômicas dentro e entre cinco espécies deste gênero, sendo nove exemplares de B. capitata, três de B. eriospatha, três de B. odorata, dois de B. paraguayensis e dois de B. yatay. Foram coletados frutos de populações naturais, cujas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cariótipo; Número cromossômico; Palmae; Butiá.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452009000400026

Extraction of essential oils from lime (Citrus latifolia Tanaka) by hydrodistillation and supercritical carbon dioxide
Provedor de dados: 52
Autores: Atti-Santos,Ana Cristina; Rossato,Marcelo; Serafini,Luciana Atti; Cassel,Eduardo; Moyna,Patrick.
In this work lime essential oils were extracted by hydrodistillation and supercritical carbon dioxide. In the case of hydrodistillation, the parameters evaluated were extraction time and characteristics of the plant material. In supercritical extraction, the parameters evaluated were temperature, pressure, CO2 flow, extraction time and material characteristics. Considering citral content, the best results for hydrodistillation were obtained with a distillation time of 3 hours using whole peels. The best results for supercritical extraction were found using 60ºC, 90 bar, at a CO2 flow rate of 1 mL/ min for 30 minutes using milled peels. The best yields of lime oil were obtained by hydrodistillation (5.45% w/w) and supercritical extraction (7.93% w/w) for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus latifolia; Lime; D-limonene; Supercritical carbon dioxide; Hydrodistillation.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100020

Characterization of Nomuraea rileyi strains using polymorphic DNA, virulence and enzyme activity
Provedor de dados: 52
Autores: Vargas,Lúcia Rosane Bertholdo; Rossato,Marcelo; Ribeiro,Rute Terezinha da Silva; Barros,Neiva Monteiro de.
The characterization of entomopathogenic microorganisms is important for the selection of more effective strains for use in integrated pest-control programs. Five Nomuraea rileyi strains (SA86101, GU87401, SR86151, CG128 and VA9101) were characterized using random amplified polymorphic DNA (RAPD) analysis, virulence studies and assessment of chitinolytic and proteolytic activity. RAPD analysis divided the strains into two groups with a similarity coefficient of 0,76%, group 1 consisting of strains SA86101, GU87401 and SR86151 and group 2 of strains CG128 and VA9101. The LT50 varied from 165h with strain VA9101 to 246h with strain GU87401. Chitinolytic and proteolytic activity of the fungi after 144h growth in minimal medium were tested using colloidal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nomuraea rileyi; Anticarsia gemmatalis; Chitinase; Protease; RAPD; Virulence.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000100003

Essential oil yield and composition of Lamiaceae species growing in southern Brazil
Provedor de dados: 52
Autores: Agostini,Fabiana; Santos,Ana Cristina Atti dos; Rossato,Marcelo; Pansera,Márcia Regina; Santos,Paula Luciana dos; Serafini,Luciana Atti; Molon,Rosângela; Moyna,Patrick.
The Lamiaceae family has been described to be rich in essential oil. The aim of the present work was to identify the native species of Rio Grande do Sul with potential use as the aromatic plants. Seven species of the family were collected in the different localities of the state. The essential oils were obtained by 1h hydrodistillation in a Clevenger apparatus. The constituents were identified by comparing their GC Kovats retention indices (RI), determined with reference to a homologous series of n-alkanes and by comparing their mass spectral fragmentation patterns with literature data. Cunila incisa and Mentha aquatica resulted in the higher esssential oil yields (1.94% v/w and 0.93% v/w, respectively. The composition of M. aquatica was 80% methone, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lamiaceae species; Essential oil composition; Southern Brazil; Hydrodistillation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200026

Physico-chemical evaluation of Rosmarinus officinalis L. essential oils
Provedor de dados: 52
Autores: Atti-Santos,Ana Cristina; Rossato,Marcelo; Pauletti,Gabriel Fernandes; Rota,Luciana Duarte; Rech,Juarez Ciro; Pansera,Marcia Regina; Agostini,Fabiana; Serafini,Luciana Atti; Moyna,Patrick.
Nineteen samples of Rosmarinus officinalis were extracted by steam distillation in a pilot plant and evaluated in terms of chemical compositions and physico-chemical characteristics. The volatile oil yields ranged from 0.37% (1999 harvest) to 0.49% (1998 harvest). Twenty components were identified in the oils. The major components were alpha-pinene (40.55 to 45.10%), 1,8-cineole (17.40 to 19.35%), camphene (4.73 to 6.06%) and verbenone (2.32 to 3.86%). The physico-chemical parameters averaged 0.8887 g/cm³ for specific gravity, 1.4689 for refractive index, and +11.82° for optical rotation, and there were no significant variations in either the chemical or physico-chemical data in the different years.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rosmarinus officinalis rosemary essential oil composition alpha-pinene 1; 8-cineole physico-chemical parameters.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800020

Extraction of tannin by Acacia mearnsii with supercritical fluids
Provedor de dados: 52
Autores: Pansera,Marcia Regina; Iob,Gelson Antonio; Atti-Santos,Ana Cristina; Rossato,Marcelo; Atti-Serafini,Luciana; Cassel,Eduardo.
Studies were carried out on solvent and supercritical extraction to obtain natural tannins. The results showed that the best co-solvent to extract tannin with CO2 supercritical was water with a concentration of 5.0% and the best trap rinse solvent was methanol.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Co-solvents; Tannin; CO2 supercritical.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000600019