Navegando por Assunto "baru"
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Item Avaliação cinética de comportamento de componentes do baru (Dipteryx alata Vog.) para estudo da vida de prateleira da polpa do fruto(Universidade Federal de Goiás, 2008-08-15) MENDONÇA, Aline Luiz de; CALIARI, Márcio; http://lattes.cnpq.br/3558164788327179; SANTIAGO, Raquel de Andrade Cardoso; http://lattes.cnpq.br/0424807117498265The work aimed to achieve the kinetic study of the physical and chemical characteristics of the pulp baru, through physical and chemical analyses, with focus on tannins, for 6 months of storage. We used two treatments, washing fruits of barus with and without sanitation, both stored in plastic boxes with circulating air, clean and a place under the sun and at room temperature. The proximate composition of the pulp baru occurred in two stages: beginning and end of the study. There was fortnightly analyses in the first 45 days and then of forty-five to forty-five days, for 6 months. It was evaluated in the pulp content of tannins, total and reducing sugars, color and proof of rancidity, and the whole fruit weight and size; addition to microbiological analyses of pulp at each time of storage. There was also a sensory analysis of acceptance of dry biscuit, with and without the replacement of 25% for wheat flour by pulp baru, three times of storage. The results were analyzed using analysis of variance (ANAVA) and Tukey's test (P<0.05). In compositions centesimals observed that the levels of moisture and fibre increased significantly (P<0.05) at the end of the study, while the level of lipids decreased significantly (P<0.05) and the content of protein has remained equal. The levels of reducing sugars and totals have increased over the period of storage. To this total sugar content increased from 22.70% to 47.02% and 23.18% to 48.18% for pulp washing with and without sanitation, respectively. We have increased significantly reducing sugars (P<0.05) over the storage more than 2.5 times for the two parameters evaluated. The content of tannins decreased until the third time, since there is more of that component to the 46 days of storage. It was found that the stage of hygiene caused a decrease in the level of tannins, giving the fruit pulp with hygiene always a lower value for this compound, conversely to what happened with the color of the raw material. The physical parameters of fruit showed no significant differences (P>0.05) to the end of the study. The survey showed that store barus in hygienic conditions increases the shelf life of the flesh of the fruit.Item CARACTERIZAÇÃO FÍSICO-QUÍMICA, MICROBIOLÓGICA E SENSORIAL DE PÃES DE FORMA ELABORADOS COM SUBPRODUTOS DE BARU (Dipteryx alata Vog.)(Universidade Federal de Goiás, 2008-01-28) ROCHA, Lorena Santana; SANTIAGO, Raquel de Andrade Cardoso; http://lattes.cnpq.br/0424807117498265The objective of this work was to investigate the feasibility of the pell and flesh of the baru, while ingredient in the development of bread-form. From the formulation of a bread standard were developed four types of breads so using to peel and flesh of baru in different proportions (PCB25 - 25.00%, PCB50 - 50.00%, PCB75-75, 00% and PCB100 - 100.00%) to replace the farelo of wheat. The peel and flesh of baru were analyzed for microbiological quality, levels of moisture, protein, lipids, carbohydrates, fiber, ash, pH, content of soluble solids. With the exception of the last two analisys, the others have been held for breads, even to the sensory analysis, specific volume and density. The results were analyzed by the coefficient of variation, analysis of variance, test Tukey (p <0.05) and correlation of Pearson. The analysis of the composition centesimal of the peel and flesh of the baru revealed a high content of carbohydrates (65.00%) and fiber (4.00%), a low concentration of protein and lipid (4.00% and 3.00%, respectively). The peel and flesh of baru presented concentration of soluble solids with a value of 5.00 ° Brix and pH equal to 5.40. The breads have developed an average 34.00% moisture, 2.00% ash, 2.00% of lipids, 13.00% of protein, 42.00% of carbohydrates and 6.00% of total fiber food. There was an increase in up to 58.20% in the content of FAT with increasing proportion of the peel and flesh of the baru. All samples were accepted on the attributes appearance, texture and flavor, and is considered low in total fat, not showing significant difference between them on the content of protein and moisture. The results of microbiological analysis was favorable. The survey showed that the peel and flesh of baru are feasible for implementing technological ingredient in breads, giving improves the nutritional characteristics and sensory attributes.Item ESTRUTURA GENÉTICA POPULACIONAL E FLUXO GÊNICO EM Dipteryx alata VOGEL (FABACEAE) NO CERRADO(Universidade Federal de Goiás, 2009-01-22) SOARES, Thannya Nascimento; TELLES, Mariana Pires de Campos; http://lattes.cnpq.br/4648436798023532; CHAVES, Lázaro José; http://lattes.cnpq.br/9990967290797379The goal of this study was to evaluate the genetic structure and the spatial pattern of intra and interpopulational gene flow of Dipteryx alata Vogel, based on nuclear and chloroplastidial microsatellite markers. Primers were developed based on sequencing of random fragments from a shotgun genomic library for detection of microsatellite regions. 12 microsatellites regions were obtained from 688 sequences, which allowed the construction of pairs of primers. These regions are composed of motifs with two to six nucleotides, ranging from 136 to 380 base pairs. This shows that the random sequencing strategy from shotgun libraries is interesting because it allows the achievement of primers for repetitive regions with different motifs. Two of these loci (Da_E06 e Da_E12) were polymorphic with three alleles each. He estimation for these loci showed satisfactory values (0.2946 and 0.2879, respectively), considering the number of alleles. Also, we used a transferred primer from the species Phaseolus vulgaris (BM164) for D. alata. Moreover, other two chloroplastidials microsatellite primers were used for molecular analyses of georeferenced subpopulations, totalizing 775 plants distributed over the natural occurrence area of Cerrado. 210 of these plants were collected and georeferenced one by one along the margins of the Araguaia River in the states of Mato-Grosso (RAMT) and Goiás (RAGO) for spatial distribution of genetic variability in local scale analysis. The relationship between estimations of genetic diversity parameters with patterns of potential distribution of species was evaluated. This was used to test the hypothesis that the genetic variability of D. alata populations is distributed according to the central-periphery model. D. alata subpopulations showed considerable high levels of genetic variability that was significantly structured among subpopulations and well structured in space, both for nuclear and chloroplastidial data. The estimation of the apparent cross-fertilization rate (ta = 1.0575) indicates that the species is allogamous. Estimations of migration rates by pollen and by seeds were lower than one, indicating that seed dispersal contributes more effectively for total gene flow. Estimates of the genetic diversity parameters from the Araguaia River population showed similar values between both margins. The estimation of the apparent cross-fertilization rate (0.9434) indicated that the Araguaia River is not a physical barrier to effective gene flow. The effective size of the neighborhood, i.e., the mean number of individuals in an area where panmixia occurs was 85.64 and 22.99 for nuclear and chloroplastidial data, respectively, indicating that seed dispersal is more restricted. The correlogram generated with chloroplastidial data presented a cline pattern of variance more evident than with nuclear data, suggesting that the presence of spatial genetic structure is being more influenced by seed dispersal. We observed that the genetic parameters do not follow a classical central-periphery model, because peripheral population (according to geographical distribution of sampling locations) tended to demonstrate higher values for these estimations, mainly the South and Western subpopulations. The relationship found between the fixation index (f) with human impact indicated that the subpopulations evaluated can be affected by fragmentation process and land use, probably caused by the recent human colonization in Cerrado biome.