263 resultados para PREDATORY ODOR


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As estruturas da derme como os folículos pilosos e os ductos das glândulas sudoríparas e de óleo, proporcionam uma via de passagem por onde os micro-organismos atingem os tecidos mais profundos da pele. A transpiração fornece umidade e alguns nutrientes para o crescimento microbiano (TORTORA, 2012). Dentre os vários gêneros de bactérias que constituem a microbiota residente das axilas, encontram-se o Staphylococcus e o Micrococcus, responsáveis pelo odor do ácido isovalérico, o odor caracterísitico das axilas. Estão presentes também bactérias do gênero Corynebacterium, responsáveis pelo odor axilar pungente dos esteróides androgênicos (JACKMAN & NOBLE, 1983). O método mais eficaz de inibir a produção de exoenzimas bacterianas responsáveis pelo mau odor axiliar são as composições desodorantes. O método consiste em produzir um veículo cosmético (emulsão, suspensão em gás, composição hidroalcoólica, entre outros) e adicionar um ativo desodorante dissolvido ou em suspensão, que tem como propriedade a inibição da produção das exoenzimas bacterianas que levam à produção dos cheiros desagradáveis. (EIGEN & FROEBE, 1997). Neste trabalho testamos a suscetibilidade de três espécies de bactérias semelhantes às que compõem a microbiota permanente das axilas (Staphylococcus aureus ATCC 6538, Staphylococcus epidermidis ATCC 12228 e Corynebacterium xerosis ATCC 373), frente a três formulações cosméticas hidroalcoólicas de desodorantes em spray contendo ativos desodorantes. Utilizamos também a linhagem Escherichia coli ATCC 8739, pois esta enterobactéria pode estar presente nas axilas principalmente pelo contato destas com as mãos (BORICK & SARRA, 1960). A metodologia utilizada para os testes foi baseada na norma M7-A7 (CLSI, 2006), que trata dos testes de sensibilidade a agentes antimicrobianos por diluição para bactérias de crescimento aeróbico. A fórmula desodorante que teve melhor desempenho sobre...

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With the constant increase in the municipal solid waste (MSW) generation, mainly due to the high consumption patterns, it becomes difficult to manage correctly the solid waste and thus minimize their impact on the environment. One of the most problems of the large amount of waste generated is the liquid originated from physical, chemical and biological decomposition process of organic wastes, with dark color and bad smell, called leachate: it can reach the soil, polluting the groundwater and the surface water. Therefore, this study aimed to investigate the process of coagulation/flocculation/sedimentation applied in the treatment of the leachate generated in the not controlled landfill of Presidente Prudente, Sao Paulo... (Complete abstract click electronic access below)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Insects of the suborder Heteroptera are known for their odor, for being pests, or for being disease carriers. To gain better insight into the cytogenetic characteristics of heteropterans, 18 species of terrestrial Heteroptera belonging to eight families were studied. The presence of heteropycnotic corpuscles during prophase I, terminal or interstitial chiasmas, telomeric associations between chromosomes, ring disposals of autosomes during metaphase, and late migrations of the sex chromosomes during anaphase were analyzed. These features showed identical patterns to other species of Heteroptera previously described in the literature. Another studied characteristic was chromosome complements. The male chromosome complements observed were 2n = 12 chromosomes [10A + XY, Galgupha sidae (Amyot & Serville) (Corimelaenidae) and Pachycoris torridus (Scopoli) (Scutelleridae)]; 2n = 13 [10A + 2m + X0, Harmostes serratus (Fabricius), Harmostes apicatus (Stål), Jadera haematoloma (Herrich-Schaeffer), Jadera sanguinolenta (Fabricius), Jadera sp. (Rhopalidae)], and Neomegalotomus parvus (Westwood) (Alydidae); 2n = 13 [12A + X0, Stenocoris furcifera (Westwood) (Alydidae); 2n = 14 [12A + XY, Dictyla monotropidia (Stål) (Tingidae)]; 2n = 19 [18A + X0, Acanonicus hahni (Stål) (Coreidae)]; 2n = 21 [18A + 2m + X0, Acanthocephala sp. (Dallas) (Coreidae)]; 2n = 27 [24A + 2m + X0, Anisoscelis foliacea marginella (Dallas) (Coreidae)]; 2n = 18 [16A + XY, Oncopeltus fasciatus (Dallas) (Lygaeidae)]; 2n = 17 [14A + X1X2Y, Oxycarenus hyalinipennis (Costa) (Lygaeidae)]; 2n = 16 [12A + 2m + XY, Pachybrachius bilobatus (Say) (Lygaeidae)]; 2n = 26 [24A + XY, Atopozelus opsinus (Elkins) (Reduviidae)]; and 2n = 27 [24A + X1X2Y, Doldina carinulata (Stål) (Reduviidae)]. The diversity of the cytogenetic characteristics of Heteroptera was reflected in the 18 studied species. Thus, this study extends the knowledge of these characteristics, such as the variations related to chromosome complements, sex chromosome systems, and meiotic behavior.

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Frying is a widely used method of preparing food, because it is a very fast and convenient process, and because it provides specific characteristics of color, flavor, odor, and texture, besides having great consumer acceptance. Therefore, the interest in the physiological effects that oils heated at high temperatures can cause to the human body arises. The aim of this work was to analyze the levels of frying used oil alteration in different kinds of foods served at the university restaurant at “Instituto de Biociências, Letras e Ciências Exatas” (IBILCE), in São José do Rio Preto-SP. In addition, it aims to make the restaurant aware of the good ways to fry and the commitment of providing good quality food to students and professionals of the Institute. With this purpose, determination of total polar compounds, conjugated dienoic acids, peroxide value, and fatty acid profile were analyzed. Two rapid tests were also used: 3M Fat Monitor and Oil Test kit. The results were compared with limits recommended for the disposal of oils and fats used in frying by the Brazilian Health Surveillance Agency (ANVISA), by other countries, and by other researches. Thus, it was concluded that the university restaurant provides the consumers with fried food of good quality, since none of the analyses showed results above recommended, although there is a need of improvement in the quality control of the oil used, in order to avoid unnecessary costs to the university restaurant.

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Brazilian wines are appreciated by consumers for having fruity odor and taste which are typical from Vitis labrusca cultivars. The rusticity of these cultivars, the winemaking and the physicochemical properties are some of the key factors to obtain a quality beverage. In this context, the aim of this article was to analyze the quality of three white wines from wineries located in northwest region of São Paulo state by determining physicochemical properties and sensory profile. Data were analyzed by statistical tests and by Principal Component Analysis (PCA). It was possible to observe statistical differences (P<0,05) in most physicochemical properties. Furthermore, the PCA showed that the attributes body and color significantly explained the variance of the first and second component, respectively, higlighting the Vitis vinifera wine. Thus the connection between the physicochemical and sensory properties of white wines was important for characterization of these beverages produced in the northwest of São Paulo.

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Brazilian red wines are very appreciated by consumers from tropical regions, because they typically have aromatic and fruity taste. Thus, the aim of this article is to verify the quality of red wines from wineries located in Northwest region of São Paulo, based on the relationship between physicochemical properties and sensory attributes. Three red wines from this region was evaluated by sensory and analytical methods and it was possible to observe significant differences in the fixed acidity, alcoholic content, total phenolic content and total dry extract. Multidimensional Scaling showed relationship between total phenolic content and astringency, total dry extract and body and the relationship of volatile acidity in the assessment of odor samples. It was possible to see the physicochemical influence in sensory evaluation, indicating the importance of the chemical profile in the elucidation of possible sensory alterations in red wines.

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Despite the Amazon Forest being the largest tropical forest in the world, and cradle of rubber trees (Hevea brasiliensis), no studies have aimed to report the occurrence of mites associated with native trees from this ecosystem. Our survey investigates the phytoseiid mites associated with five species of native rubber trees from nine sites of the Amazon Forest, and also presents a major review of phytoseiid species from natural vegetation in Brazil. We found a total of 1305 mites, belonging to 30 species, of which seven were new to science, Amblydromalus akiri sp. nov., Amblyseius chicomendesi sp. nov., Amblyseius duckei sp. nov., Amblyseius manauara sp. nov., Iphiseiodes katukina sp. nov., Iphiseiodes raucuara sp. nov. and Typhlodromips igapo sp. nov.; beyond two new records for Brazil, Iphiseiodes kamahorae and Amblyseius martus. Our results emphasize the importance of Amazon native trees as an unexplored source of predator mites, which in turn may be further studied as biological control agents of pest mites on rubber trees. The impressive diversity, endemism and rate of new species found highlight the importance of studies on arthropod communities associated with the Amazon vegetation.

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Pós-graduação em Agronomia (Ciência do Solo) - FCAV

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

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Biociências - FCLAS

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Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE

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Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV