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URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3352
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Item Alterações na qualidade do café submetido a diferentes formas de processamento e secagem(Revista Engenharia na Agricultura, 2013-10-09) Malta, Marcelo Ribeiro; Rosa, Sttela Dellyzete Veiga Franco da; Lima, Priscilla Magalhães; Fassio, Larissa de Oliveira; Santos, Juliano BatistaPesquisas recentes têm indicado várias alterações nos grãos de café decorrentes do processamento e secagem. Assim, neste trabalho objetivou-se verificar a influência da secagem lenta e secagem rápida sobre alguns parâmetros bioquímicos e fisiológicos de grãos de café e sobre a qualidade da bebida. Cafés da cultivar Catuaí Vermelho IAC 144 foram colhidos e submetidos a três formas de processamento, café natural, desmucilado e despolpado, e dois métodos de secagem, lenta à sombra em telados suspensos e secagem rápida em secadores de camada fixa a 35 ºC. Após secagem, os cafés foram submetidos às seguintes avaliações: análise sensorial, condutividade elétrica, lixiviação de potássio, atividade enzimática da polifenoloxidase, acidez total titulável e análises fisiológicas. Há interação entre métodos de processamento e de secagem sobre a qualidade sensorial do café, sendo mais evidentes os efeitos da secagem. Os cafés obtidos por via úmida tem maior tolerância à secagem do que os processados por via seca. Melhor qualidade sensorial é obtida nos cafés submetidos à secagem lenta, independentemente da forma de processamento utilizada. Cafés de melhor qualidade sensorial apresentam melhor qualidade fisiológica.Item Composição bromatológica e fatores antinutricionais de silagens produzidas com subprodutos do processamento do café(Revista Brasileira de Agropecuária Sustentável, 2013-12-30) Malta, Marcelo Ribeiro; Fassio, Larissa de Oliveira; Silva, Marina de Mesquita; Lima, Priscilla Magalhães de; Chagas, Rafael Matioli Rezende; Barcelos, Adauto FerreiraA escassez de forragens em algumas regiões do Brasil tem sido responsabilizada pela baixa produtividadedos bovinos. Visando amenizar esse problema, diversas alternativas têm sido propostas, como o aproveitamentode resíduos da agroindústria, a exemplo da casca de café. Este trabalho teve como objetivo avaliar a composiçãoquímica e fatores antinutricionais de silagens produzidas com subprodutos do processamento do café. Foramavaliados 13 tratamentos (T) com a utilização da casca de café úmida (CCU), casca de café seca (CCS), comou sem a utilização de melaço a 5% (M) e com ou sem a utilização de inoculante Lactobacillus plantarum(I), a saber: T1 (100% CCU); T2 (90% CCU + 10% CCS); T3 (80% CCU + 20% CCS); T4 (60% CCU + 40%CCS); T5 (85% CCU + 10% CCS + 5% M); T6 (90% CCU + 10% CCS + I); T7 (75% CCU + 20% CCS +5% M); T8 (80% CCU + 20% CCS + I); T9 (55% CCU + 40% CCS + 5% M); T10 (60% CCU + 40% CCS+ I); T11 (85% CCU + 10% CCS + 5% M+ I) + T12 (75% CCU + 20% CCS + 5% M + I); T13 (55% CCU+ 40% CCS + 5% M + I). Uma vez preparados os tratamentos, estes foram acondicionados em protótiposde silos confeccionados em PVC medindo 250 mm de diâmetro e 750 mm de altura durante um período de60 dias. Foram realizadas análises da composição bromatológica e dos fatores antinutricionais nas silagensobtidas. Diante dos resultados, conclui-se que as silagens oriundas da casca de café apresentam potencial paraa alimentação de ruminantes. Entretanto, a presença de alguns compostos químicos afetam negativamenteo valor nutritivo da casca de café sendo que a sua inclusão na dieta de ruminantes deve ser realizada comcautela.Item Sensory profile of arabica coffee accesses of the germplasm collection of Minas Gerais – Brazil(Editora UFLA, 2019-07) Fassio, Larissa de Oliveira; Pereira, Rosemary Gualberto Fonseca Alvarenga; Malta, Marcelo Ribeiro; Liska, Gilberto Rodrigues; Sousa, Maísa Mancini Matioli; Carvalho, Gladyston Rodrigues; Pereira, Antônio AlvesThis study was developed to determine the beverage quality and the sensory profile of Coffea arabica accesses of the Germplasm Collection of Minas Gerais State in two consecutive harvests. Mature coffee fruits from 49 accesses were selectively harvested in the 2015 and 2016 harvests, and after processing and drying they were sensorially evaluated by a team of trained judges in accordance to the protocols of the Specialty Coffee Association. The data were analyzed by Principal Component Analysis, Cluster Hierarchical Analysis, and Content Analysis. The year of harvest influences the scores of the sensory attributes of the beverage of some coffee accesses. The access 27 (Pacamara) stood out with the highest sensory score seen in the first year of harvest. The accesses 36 (Timor Hybrid UFV376-52) and 43 (BE5 WushWush) stood out for the final sensory score in the two years of evaluation. All accesses belonging to the Timor Hybrid Germplasm stood out in the beverage quality in the second year of harvest. A total of 139 sensory attribute descriptors were identified, and the content analysis showed different levels for the frequency of terms in each access group formed as a function of quality. The Germplasm Collection of Minas Gerais has a wide variability for the production of superior quality coffees, and the year of harvest influences to a greater or lesser degree the potential of quality of the accesses.Item Arbuscular mycorrhizal fungus on the initial growth and nutrition of Coffea arabica L. genotypes(Editora UFLA, 2019-08) Fonseca, Arley José; Freitas, Ana Flávia de; Carvalho, Gladyston Rodrigues; Carneiro, Marco Aurélio Carbone; Vilela, Diego Júnior Martins; Fassio, Larissa de OliveiraThe benefits of mycorrhization occur with the growth of hyphae in colonized roots by promoting an increase of the contact surface which improves the initial growth due to a better absorption of water and nutrients. The objective was to evaluate the effect of arbuscular mycorrhizal fungus Rhizophagus clarus inoculation over the initial development and nutritional response of six genotypes of Coffea arabica L. Six genotypes of Coffea arabica L. were used (MGS Aranas, H29-1-8-5, Red Catuai IAC 144, IPR 100, Catigua MG2, Paraíso H 419-1) and with arbuscular mycorrhizal fungus - AMF: Rhizophagus clarus and without the application of the fungus. For the production of coffee seedlings, seeds were placed to germinate in plastic trays with sterile sand. After germination, 10 seedlings of each genotype were transferred to 0.120 dm 3 polyethylene tubes with substrate. Then the inoculation of five seedlings of each genotype with the AMF R. Clarus was performed. When the seedlings with and without inoculation with the AMF presented six pairs of leaves they were transplanted to 13-liter pots containing soil (Dystrophic red-yellow latosol). The inoculation favored the initial growth of the coffee plants and its intensity varied according to the genotypes. The genotypes H 29-1-8-5, Red Catuai IAC 144 and Catigua MG 2 were the ones that presented higher shoot dry mass, root dry mass, total dry mass and accumulation of P, in relation to MGS aranãs, Paraiso H 419-1 and IPR 100, so they are the most promising to be inoculated with the arbuscular mycorrhizal fungus.Item Morphoagronomic and sensory performance of coffee cultivars in initial stage of development in cerrado mineiro(Editora UFLA, 2019-04) Pereira, Dyanna Rangel; Aguiar, João Augusto Rodrigues de; Nadaleti, Denis Henrique Silva; Fassio, Larissa de Oliveira; Carvalho, João Paulo Felicori; Carvalho, Samuel Pereira de; Carvalho, Gladyston RodriguesQuality, in a condition of typical cultivation of the Cerrado. The trial was carried out in the municipality of Monte Carmelo - MG, in randomized block design, with four replicates. Morphoagronomic characteristics were evaluated 15 months after the implantation of the crop. The productivity and, subsequently, the quality of the beans, were evaluated at 18 months. Statistical analyzes were performed using the Genes software. The data were submitted to analysis of variance. The F test was used to determine the significance of treatments. The means were grouped by the Scott-Knott test (1974) at 5% probability and the experimental precision was verified by the estimation of the experimental variation coefficient (CV) and the selective accuracy. The sensory attributes were evaluated in a radar diagram, called “Sensogram”. Genetic variability was observed among cultivars for the vegetative characters. The cultivars Catuaí Vermelho IAC 144 and MGS Aranãs stood out as more productive, with a high percentage of sieve 16 and above and low percentage of grain type mocha. All the cultivars stood out as special, with emphasis on the cultivar Bourbon Amarelo IAC J10 in the wet processing and Catuaí Vermelho IAC 144 in the natural processing.Item Mathematical models applied to the optimisation of mixtures in the production of silage from coffee by-products(Universidade Federal do Ceará, 2017-04) Malta, Marcelo Ribeiro; Cirillo, Marcelo Ângelo; Fassio, Larissa de Oliveira; Barcelos, Adauto Ferreira; Lima, Priscilla Magalhães deThe aim of this work was to propose a mathematical model to determine the best combination of the by- products of coffee processing in the production of silage. To this end, 13 treatments were evaluated, resulting from the combination of wet coffee husks (WCH) and dried coffee husks (DCH), both with and without the use of molasses (M) and with or without the use of the inoculant Lactobacillus plantarum (I). From these components, various mixtures were proposed and evaluated, using the technique of simultaneous optimisation of multiple response variables. Silages with the best characteristics were obtained from the use of 76.40% WCH, 18.77% DCH, 4.83% of M and 0.0001% I.