Navegando por Autor "Seraphin, José Carlos"
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Item Avaliação de cultivares de milho para o processamento de pamonha(João Batista Duarte, 2004-04) Alves, Sueli Martins de Freitas; Silva, Álvaro Eleutério da; Seraphin, José Carlos; Vera, Rosângela; Souza, Eli Regina Barbosa de; Rolim, Henriqueta Merçon Vieira; Ximenes, Paulo AlcanforThe objective of this study was to evaluate the potential of twenty maize cultivars in the industrial processing of grated corn for pamonha. Data were obtained for ear weight with husks, ear weight with no husks, grated maize weight, grated maize residue weight, husk weight, and kernel depth under three storage conditions (processed on the day of harvest or after seven days of storage, with and without refrigeration). The results showed that the AG 1051 hybrid can be recommended for the industrial production of pamonha. This hybrid showed high yield and ear weight, with and without husks, the greatest grated corn production and reduced grated corn residue weight.Item A comparative analysis of practical classes in cellular biology for undergraduate biological sciences students(2010) Rocha, Thiago Lopes; Oliveira, Mayara Lustosa de; Seraphin, José Carlos; Sabóia-Morais, Simone Maria Teixeira deThe purpose of this study is to perform a comparative analysis of the views of first year undergraduate students in Biological Sciences concerning practical classes in cellular biology. The results indicate that the subject is fundamental in the training of future biologists. Practical classes are the means to apply theory taught previously and may lead to alterations in views on relevant topics. Static viewing as well as equality noting between cell types are examples of conceptions modified due to the application of distinct methodological practices. The application of a questionnaire showed that views differed in bachelor of science (BS) Teacher Certification (TC) classes. The BS students preferred practical classes using the light microscope, while TC students preferred classes where visual devices such as movies and /or animation were used. We suggest that practical classes in cellular biology be prepared differently, according to each type of biology course.Item Correlação entre diversos parâmetros de qualidade do leite obtido na fonte de produção(Wilson Ferreira de Oliveira, 1988) Mesquita, Albenones José de; Seraphin, José Carlos; Ribeiro, José Leonides; Dias Filho, Francisco de CarvalhoWith this work we have in view to evaluate the hygienic conditions of raw milk, stored in milk cans at production sources. We extracted 63 milk samples irnrnediately after the morning milking (by machine or by hand) in cattle farms, located in the great region of Goiania city, State Goias, that we assorted at random from 33 fanns in 16 municipalities. It was determined the milk dirtiness rate with results in mg/1 and correlated with micro-organism enumerations as quality indicators. Also was made, between them, the correlation of micro-organism indicators.Item Dinâmica microbiana em contrafilés bovinos embalados a vácuo: sistemas de terminação e tempo de estocagem(Instituto Adolfo Lutz, 2011-12) Melo, Camila Silveira de; Mesquita, Albenones José de; Rezende, Cíntia Silva Minafra e; Seraphin, José Carlos; Oliveira, Marinna Barros de; Bueno, Cláudia PeixotoConsidering the importance of the quality of vacuum-packed meat for the trading of this product, this study aimed at evaluating the microbial dynamics of bovine meat cuts Longissimus dorsi, commercially known as striploin (boneless sirloin), which were vacuum-packed and stored at 0 ± 1 °C at the slaughterhouse for five periods of storage. The samples of meat cuts from females zebu cows, being 15 animals aged nearly 46 months old and feed in grazing system, and 15 aged nearly 12 months old which were fattened at a highperformance confinement. After being cooled and stored during 75 days, these chilled vacuum-packed meat samples were assessed on microbiological quality at 0, 30, 60, 45 e 75 shelf-life days. The microbiological quality was evaluated by detecting and count of the viable aerobic bacteria, Enterobacteriaceae, anaerobes and lactic acid bacteria, the most probable number determination (MPN) of coliforms, fecal coliforms and Escherichia coli; as well as the pH and temperature of meat cuts. The termination system has affected the microbial dynamics partially. The vacuum-packaged meat might contain deteriorative and pathogenic microorganisms arising from environmental or fecal contamination. The longer the meat cuts were storage, the higher was the microorganisms count.Item Enumeração de staphylococcus em leite cru(Wilson Ferreira de Oliveira, 1988-12) Mesquita, Albenones José de; Seraphin, José Carlos; Ribeiro, José Leonides; Dias Filho, Francisco CarvalhoThe present study checked the number of positive Stapbylococcus coagulase in raw milk in milk caos at the source of production. Sixty-three sarnples were collected, right after morning milking (both by hand and machine) on properties in the milk belt surrounding metropolitan Goiãnia-Go., this area is composed of 16 counties, and 33 milk farms were chosen at random. Stapbylococcus coagulase checked out positive in 45 samples (Jl,4%) and the enumerations varied between 1,9 X 101 UFC/ml and 8,9 X 104 UFC/ml. The average count was 5,3 X 103 UFC/ml.Item Estudo de alguns fatores relacionados com a qualidade microbiológica do leite cru obtido na fonte de produção(Wilson Ferreira de Oliveira, 1989-12) Mesquita, Albenones José de; Serafini, Álvaro Bisol; Seraphin, José Carlos; Ribeiro, José LeonidesThe aim of this work is the evaluaâon of some factors that contribute to the microbiological and hygienic quality of raw milk, obtained at production levei, placing emphasis to verify some important variables performance in raw production, like: spoil or free tail, pen floor types, strainers type utilized, etc, in relation to a group of present microrganisms; the counting of viables mophilic aerobes, therm.odurics and the most probable number of total coliforrn and tbe lactofiltration test.Item Influence of fruit biotypes on the chemical composition and antifungal activity of the essential oils of Eugenia uniflora leaves(2010-02) Costa, Deomar Plácido da; Alves Filho, Elenilson de Godoy; Silva, Lorena Mara Alexandre e; Santos, Suzana da Costa; Passos, Xisto Sena; Silva, Maria do Rosário Rodrigues; Seraphin, José Carlos; Ferri, Pedro HenriqueThe multivariate chemical analysis of essential oils of Eugenia uniflora leaves with different fruit colours indicated the presence of three oil clusters regarding sample biotypes. The first cluster included yellowish, dark red and purple fruits with high percentages of germacrene B (11.1-30.7%), germacrone (9.8-54%) and atractylone (0-19.9%). In cluster II, with bright red fruit samples, the major constituents were curzerene (42.0-43.2%), germacrene D (8.7-9.0%) and germacrene A (5.9-8.9%), whereas cluster III included red-orange fruit samples containing high contents of selina-1,3,7(11)-trien-8-one (40.3-55.4%) and selina-1,3,7(11)-trien-8-one epoxide (12.7-24.4%). The clustered oils were investigated against the systemic fungus Paracoccidioides brasiliensis via the broth macrodilution method. The oil from cluster II revealed the most significant result. The yeast form of P. brasiliensis was completely inhibited at a concentration of 62.5 mg mL-1.Item Percepção do estudante de graduação sobre o ambiente acadêmico da UFG: análise fatorial e de cluster(2015) Silveira, Everton Wirbitzki da; Verdu, Victor Souza Martins e; Castro, Rosangela Nunes Almeida de; Seraphin, José Carlos; Barros, Patrícia de SáThis paper presents the results of the use of factor analysis and cluster based on the perception of undergraduate students related to the academic environment of the Federal University of Goiás (UFG). The first method, namely factor analysis allows to identify five factors extracted from the 19 issues examined from a total of 26 questions once answered by students at the time of enrollment in the second half of 2013. Moreover the second method, cluster analysis, segmented eight groups for the 106 courses of UFG, allowing to note that in some areas there is a predominant groupings of health, information sciences and engineering, leading the conclusion that students have similar perceptions as their area of knowledge, even varying the campuses they have attend classes.Item Principal Response Curves analysis of polyphenol variation in resistant and susceptible cotton after infection by a root-knot nematode (RKN)(2016) Alves, Gleina Costa Silva; Ferri, Pedro Henrique; Seraphin, José Carlos; Fortes, Gilmara Aparecida Corrêa; Rocha, Mara Rúbia da; Santos, Suzana da CostaThe root-knot nematode (RKN), Meloidogyne incognita, attacks cotton root system. This study aimed to compare the induction of phenolic compounds over time in two cotton genotypes, resistant (TX-25) and susceptible (FM966), by RKN. Chemical profiles of cotton roots were obtained by HPLC, NMR, and colorimetric methods at four different time intervals. The Principal Response Curves analysis, a time-dependent, multivariate method, showed consistent variability over time in the profile of phenolic compounds between treatments for both genotypes. The variables that most contributed to the divergence between damaged and undamaged cotton roots were dimethoxylated and non-methoxylated gossypols, total flavonoids, and total phenols.Item Spatial chemometric analyses of essential oil variability in Eugenia dysenterica(2013-04) Vilela, Eliane da Costa; Duarte, Alessandra Rodrigues; Naves, Ronaldo V.; Santos, Suzana da Costa; Seraphin, José Carlos; Ferri, Pedro HenriqueChemovariations in essential oils were used for studying the spatial chemical structure of eight E. dysenterica populations in Central Brazilian Cerrado. Previously, multivariate Mantel autocorrelogram and chemical matrix variation partitioning, using the spatial and environmental data sets as predictors, have suggested a highly significant spatial variation in essential oils. In the present study, spatial chemometric methods using variograms and probability maps detected and characterized the spatial chemical structure among populations, as well as the environmental factors responsible for them. All these strategies indicated that the populations differ chemically whenever the geographical distance exceeds 120 km, an indicator of the minimal distance between samples required for conserving the genetic diversity of populations. Although being scarcely used with secondary metabolites, these methodologies may be used in a wide range of applications in species management and may lead to an effective integration of genetic, chemical and ecological perspectives.