Coffee Science
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3355
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Resultados da Pesquisa
Item Fermented natural coffee followed by pulping: Analysis of the initial sensory quality and after six months of storage(Universidade Federal de Lavras, 2023-09-01) Salvio, Luís Gustavo Amaral; Cirillo, Marcelo Ângelo; Borém, Flávio Meira; Alves, Ana Paula de Carvalho; Palumbo, Juliana Maria Campos; Santos, Cláudia Mendes dos; Haeberlin, Luana; Schwan, Rosane Freitas; Nakajima, Makoto; Sugino, RyosukeIn recent years, different methods of fermentation have emerged for coffee, with the intention of adding complexity to its flavor. To be able to clearly identify the information from sensory analysis, tools capable of detecting small differences are needed. One such tool is multiple factor analysis (MFA). Thus, the objective of this experiment was to evaluate the effects of fermentation time and storage on the quality of sensory attributes using MFA. The coffee (Coffea arabica L.) samples collected for the study were from the Serra da Mantiqueira region – Brazil. In the present study, two natural coffee fermentation methods were evaluated, one using natural coffee microbiota (NF) and the other using a starter culture (Y), along with different times of anaerobic fermentation (0, 24, 48, 72, and 96h), followed by the pulping of the samples without the use of water. Sensory analysis of fermented coffee samples was performed immediately after drying and after six months of storage in permeable packaging in a refrigerated environment. Thus, the experiment was conducted in an intirely randomized design with a 2 x 5 x 2 factorial scheme (2 fermentation treatments; 5 fermentation times; 2 storage times). The highest scores and the attributes described in higher quality coffees, such as sweetness, acidity, and aftertaste, were attributed to coffees fermented for 96 hours. Results indicated that inoculation of the yeast Saccharomyces cerevisiae CCMA 0543 was responsible for maintaining the sensory qualities of the coffee fermented for 96 hours after 6 months of storage.Item Quality of specialty natural coffee stored in different packages in Brazil and abroad(Editora UFLA, 2019-10) Borém, Flavio Meira; Andrade, Fabrício Teixeira; Santos, Cláudia Mendes dos; Alves, Ana Paula de Carvalho; Matias, Gabriel Carvalho; Teixeira, Daniela Edel; Ossani, Paulo César; Cirillo, Marcelo ÂngeloA challenge in the packaging and export of specialty coffees is to avoid green coffee bean storage and transport conditions that negatively affect the sensory quality of the roasted beans. The present study evaluated green beans of specialty coffees in eight types of packaging stored in a warehouse in the municipality of Poços de Caldas, Minas Gerais State, Brazil, for 18 months (Brazilian phase). This coffees were also subjected to sea transport and subsequent storage at a specialty coffee import company (export phase) in the United States, where it remained stored for 14 months. Physical, chemical, and sensory analyses of the beans were performed in the Brazilian phase and export phase. Green coffee beans stored in high-barrier packages had the best conserved quality. Packages with little or no barrier were not adequate for packaging or exporting specialty coffees. Beans in high-barrier packaging maintained their quality for long periods, which are therefore recommended for specialty coffee storage and export.Item Qualidade do café secado em terreiros com diferentes pavimentações e espessuras de camada(Editora UFLA, 2012-09) Reinato, Carlos Henrique Rodrigues; Borem, Flávio Meira; Cirillo, Marcelo Ângelo; Oliveira, Eduardo CarvalhoObjetivou-se, neste trabalho, avaliar a qualidade do café submetido à secagem em terreiros, com diferentes pavimentações e espessuras de camadas de secagem de grãos. O delineamento experimental constituiu-se em um DIC, com os tratamentos dispostos em esquema fatorial 4x3x2 sendo quatro as formas de processamento do café (roça, cereja descascado, cereja + verde e bóia),em três tipos de terreiro (terreiro de terra, concreto e lama asfáltica) e duas espessuras de camada de secagem do café (fina e grossa), totalizando 24 tratamentos. Foram utilizadas duas repetições para cada tratamento, totalizando 48 unidades experimentais. Cerca de 15000 litros de café foram colhidos sobre pano e secados nos diferentes terreiros. Desse total, 2400 litros foram levados diretamente aos terreiros para secagem (café roça). Cerca de 4800 litros foram lavados e separados por diferença de densidade. A porção bóia e a porção cereja e verde foram secadas separadamente nos terreiros. Finalmente, 9600 litros de café foram lavados, descascados e secados nos terreiros.Aí, os cafés foram revolvidos 16 vezes ao dia. Após a secagem, amostras de café foram beneficiadas e submetidas à avaliação da qualidade por meio das seguintes análises: sensorial, compostos fenólicos, acidez titulável total, sólidos solúveis, condutividade elétrica, lixiviação de potássio e açúcares totais, redutores e não redutores. Os resultados indicam que o tipo de café, o tipo de terreiro e a espessura da camada de secagem exercem forte influência nas características químicas, físico-químicas e sensoriais do café. A secagem do café cereja descascado em camada fina, tanto em terreiro de concreto como de lama asfáltica, proporciona melhor qualidade de bebida que os demais tratamentos .