Potencial larvicida de extratos de plantas regionais no controle de larvas de Aedes aegypti

Dengue, amongst the virus illnesses one can get by vectorial transmission, is the one that causes more impact in the morbidity and mortality of world s population. The resistance to the insecticides has caused difficulties to control of vector insect (Aedes aegypti) and has stimulated a search for vegetables with larvicidal activity. The biodiversity of Caatinga is barely known and it is potential of use even less. Some plants of this biome are commercialized in free fairs northeast of Brazil, because of its phytotherapics properties. The vegetables in this study had been selected by means of a questionnaire applied between grass salesmen and natives of the Serido region from Rio Grande do Norte state; culicids eggs had been acquired with traps and placed in container with water for the larva birth. Thirty larvae had been used in each group (a group control and five experimental groups), with four repetitions four times. The vegetables had been submitted to the processes of decoction, infusion and maceration in the standard concentration of 100g of the vegetable of study in 1l of H2O and analyzed after ½, 1, 2, 4, 8, 12, 24 and 48 hours for verification of the average lethal dose (LD50) from the groups with thirty larva. The LD50 was analyzed in different concentrations (50g/l, 100g/l, 150g/l, 200g/l e 300g/l) of Aspidosperma pyrifolium Mart. 48 extracts of rind, leaf and stem of the seven vegetal species: Aspidosperma pyrifolium Mart., Mimosa verrucosa Benth, Mimosa hostilis (Mart.) Benth., Myracrodruon urundeuva Allemão, Ximenia americana L, Bumelia sartorum Mart Zizyphus joazeiro Mart, had been analyzed. The extracts proceeding from the three methods were submitted to the freezedrying, to evaluate and to quantify substances extracted in each process. The results had shown that Aspidosperma pyrifolium Mart. and Myracrodruon urundeuva Allemão are the species that are more distinguished as larvicidal after 24 hours of experiment, in all used processes of extraction in the assays. The Zizyphus joazeiro Mart species has not shown larvicidal activity in none of the assays. In relation to the extraction method, the decoction was the most efficient method in the mortality tax of the A. aegypti larvae

Desenvolvimento de microemulsões liofilizadas como um potencial sistema de liberação de fármacos usando planejamento experimental fatorial

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Anfotericina b pré-aquecida: um novo sistema terapêutico para infecções fúngicas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Obtenção e caracterização de complexos de inclusão binários e ternários com praziquantel

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Preparação e caracterização de complexos multicomponentes contendo ciclodextrinas com metotrexato

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Secagem do resíduo de acerola (Malphigia emarginata D.C.): estudo do processo e avaliação do impacto sobre o produto final

Brazil, one of the largest agricultural producers in the world, has managed in recent years to significantly improve its production. However, in response to this advance in the agro-industrial sector, the generation of agro-industrial residues has also increased. New technological alternatives have to be implemented in order to bring economic and rational use of this material and drying is one of the possible choices. Considering the great importance that bioactive compounds present for food science and technology, this research aims to evaluate the air-drying process of acerola residue in a tray convective drier under controlled temperature (60, 70 e 80ºC), air velocity (4.0, 5.0 e 6.0 m/s) and material width (0.5, 0.62 e 0.75 cm) by applying an experimental planning 23 + 3. Based on that, the impact on physical-chemical characteristics, color, bioactive compounds concentration and antioxidant activity of dried acerola waste was evaluated, having the in natura and freeze dried waste as control groups. Dried acerola residue presented natural pigments, mainly carotenoids (143.68 - 68.29 mg/g) and anthocyanins (290.92 - 90.11 mg/100 g), which explain the red and yellow instrumental color parameters observed. The acerola residue powder is also rich in phenolic compounds (3261.11 -2692.60 mgGAEeq/100g), proanthocyanidins (61.33-58.46 eq/100g), ascorbic acid (389.44 739.29 mg/100 g) and DPPH antioxidant activity (20.91 24.72 μg Trolox eq/g). Results show decreased concentration of phenolic compounds, anthocyanins, carotenoids, proanthocyanidins and ascorbic acid caused by the air-drying process. However, even after the observed drying losses, the acerola residue powder can be considered a high value food ingredient, considering the high bioactive compounds concentration found in the final product, as well as the colorimetric characterization and microbiological stability of the dried powder

Total polyphenols from Syzygium cumini (L.) Skeels fruit extract

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cyclodextrin glycosyltransferase production by new Bacillus sp. strains isolated from brazilian soil

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Effect of drying method on the adsorption isotherms and isosteric heat of passion fruit pulp powder

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Comparison between freeze and spray drying to obtain powder Rubrivivax gelatinosus biomass

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Desempenho e estabilidade de parâmetros bioquímicos em materiais de controle líquidos congelados e sólidos liofilizados

Pós-graduação em Biociências e Biotecnologia Aplicadas à Farmácia - FCFAR

Produção de glicerol quinase em Pichia pastoris

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Efeito das condições de congelamento sobre atributos de qualidade de fatias de abacaxi liofilizado

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Microencapsulação de oleoresina de cúrcuma (curcuma longa l.) em matrizes de gelatina, goma arábica e colágeno hidrolisado

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Microencapsulação de oleoresina de cúrcuma (curcuma longa l.) em misturas de goma arábica, maltodextrina e amido modificado

Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE