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| Scapinello,Jaqueline; Oliveira,José V. de; Chiaradia,Luis A.; Tomazelli Junior,Osmar; Niero,Rivaldo; Dal Magro,Jacir. |
| This study evaluates the effects of supercritical carbon dioxide extracts obtained from the fruit of Melia azedarach L. (Meliaceae) on the development of Spodoptera frugiperda J.E. Smith, 1797 (Lepidoptera: Noctuidae), from the larval period until the insect adulthood. For this purpose, a laboratory-scale extraction unit was operated at 60 °C and 200 bar. Larval mortality increased by raising the extract concentration tested: the value of LC50 calculated by Probit analysis was 376.74 mg kg-1, and at a concentration of 5000 mg kg-1, the mortality was 100%. The extract exhibited insect growth inhibitory activity in the higher concentrations (500 mg kg-1, 1000 mg kg-1 and 5000 mg kg-1), due to antifeedant action, resulting in larvae and pupae with mass and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Supercritical extraction; Fall armyworm; Chinaberry. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000800014 |
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| 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 |
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| Scopel,Rodrigo; Góes Neto,Roberto; Falcão,Manuel Alves; Cassel,Eduardo; Vargas,Rubem Mário Figueiró. |
| This work investigates the antimicrobial activity of the Schinus molle L. leaves extracts obtained under supercritical conditions using carbon dioxide and co-solvents. Antimicrobial qualitative evaluation was carried out through the bioautography technique and the microorganisms studied were Staphylococcus aureus, Pseudomonas aeruginosas, Escherichia coli, Micrococcus luteus, and Salmonella choleraesuis. The supercritical fluid extraction was carried out in a pilot scale equipment using carbon dioxide modified by the addition of co-solvents, such as ethanol and water at 150 bar and 333 K. A mathematical modeling of the process was also performed. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Supercritical extraction; Co-solvents; Schinus molle L; Antimicrobial applications. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300020 |
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