Pesquisa Agropecuária Brasileira
URI permanente para esta coleçãohttps://thoth.dti.ufv.br/handle/123456789/9886
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Resultados da Pesquisa
Item Sensory profile of conilon coffee brews from the state of Espírito Santo, Brazil(Empresa Brasileira de Pesquisa Agropecuária - Embrapa, 2018-09) Mori, André Luiz Buzzo; Garcia, Aline de Oliveira; Ferrão, Maria Amélia Gava; Fonseca, Aymbiré Francisco Almeida da; Ferrão, Romário Gava; Benassi, Marta de ToledoThe objective of this work was to present a sensory description of conilon coffee (Coffea canephora) brews produced from genotypes developed for the state of Espírito Santo, Brazil. The genotypes 'Diamante ES8112', 'ES8122', and 'Centenária ES8132' were evaluated. Nine samples from three clones (genotypes) of each cultivar, from two different regions of the state, were analyzed. A panel of tasters for coffee sensory evaluation was trained to obtain a descriptive profile and to select terms. Beverages were described as showing a higher intensity of powder fragrance, characteristic aroma of coffee brew, body, characteristic flavor and aftertaste, and a lower intensity of bitterness, acidity, astringency, and defects. The terms bitterness, strong, body, astringency, and coffee aftertaste were the most relevant in the characterization of the beverages of the studied C. canephora cultivars. Acidity is the attribute with the greatest impact on the overall quality of C. canephora brew. The coffee brews of the clones of 'Diamante ES8112', 'ES8122', and 'Centenária ES8132' are classified as of traditional quality, but near the superior category.Item Qualidade da bebida de café de frutos cereja submetidos a diferentes manejos pós-colheita(Empresa Brasileira de Pesquisa Agropecuária - Embrapa, 2004-02) Favarin, José Laércio; Villela, André Luis Gnaccarini; Moraes, Maria Heloisa Duarte; Chamma, Helena Maria Carmignani Pescarin; Costa, José Dias; Dourado-Neto, DurvalResumo O objetivo deste trabalho foi avaliar a qualidade da bebida de café obtida de frutos cereja submetidos a diferentes práticas de manejo pós-colheita, considerando-se infecções iniciadas na planta e persistentes durante o tempo de exposição às fontes infectantes. Admitiu-se que os grãos de cereja recolhidos na planta têm máximo potencial de qualidade da bebida, avaliada por meio de testes rápidos e análise sensorial. Foram adotados oito tratamentos, formados pela combinação de quatro manejos pós-colheita e frutos de café com e sem desinfec- ção por cloreto de benzalcônio. A qualidade da bebida de grãos de frutos cereja não foi prejudicada pelo manejo pós-colheita, mesmo sob exposição às infecções por até 12 horas após a derriça. Os testes rápidos não se correlacionaram com a análise sensorial da bebida, e o teste da condutividade elétrica foi mais sensível que o da lixiviação de potássio. Ambos indicaram alterações nos grãos de frutos expostos às infecções após seis horas da colheita. A desinfecção superficial dos frutos foi eficiente até a primeira hora após a imersão, diminuindo o número de frutos infectados por Cladosporium sp., Penicillum sp. e Alternaria sp.Item Production, chemical composition, and quality of Arabic coffee subjected to copper doses(Empresa Brasileira de Pesquisa Agropecuária - Embrapa, 2018-04) Martinez, Herminia Emilia Prieto; Lacerda, José Soares de; Clemente, Junia Maria; Silva Filho, Jaime Barros da; Pedrosa, Adriene Woods; Santos, Ricardo Henrique Silva; Cecon, Paulo RobertoThe objective of this work was to evaluate the effect of copper on the chemical composition of coffee beans and on the quality of the beverage, relating both of them to the Cu leaf contents in coffee (Coffea arabica) plants. Coffee plants were grown in a hydroponic system containing 0.2, 0.4, 0.8, 1.6, and 3.2 μmol L -1 Cu until fruit setting. Coffee bean production was evaluated, and, after the cherries were dried, the following characteristics were determined: leaf Cu content; total titratable acidity; color index; electrical conductivity; leached K; polyphenol oxidase (PPO) activity; concentrations of caffeine, trigonelline, organic acids, total phenols, chlorogenic acids (3-CQA, 4-CQA, and 5-CQA), sucrose, glucose, arabinose, mannose, and galactose; and sensory quality of roasted beans. Cu increased bean yield, PPO activity, and the concentrations of organic acids, 3-CQA, sucrose, and arabinose. Total titratable acidity, total phenols, 4-CQA, and 5-CQA were reduced with increasing Cu doses. Leaf contents related to the maximum and minimum values of desirable and undesirable quality attributes ranged from 5.6 to 11.4 mg kg -1 Cu, respectively. Copper affects the production and chemical composition of coffee beans, and the attributes related to quality are maximized in plants with low leaf contents of the nutrient.