Coffee Science
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3355
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Item Efect of lnf (cna - cnb) enzyme complex in the drying process and the coffee quality(Editora UFLA, 2020) Santos, Douglas Freitas; Franco Junior, Kleso Silva; Silva, Carlos Henrique da; Silva Neto, José Francisco da; Paiva, Leandro Carlos; Brigante, Giselle PradoThe world demand for quality coffee is growing and the market is increasingly demanding for sustainable practices, leading coffee growers to search for new coffee processing processes always aiming for maximum quality. The objective of this work was to verify the benefits of using the LNF CNA – CNB enzyme complex in the postharvest process, in order to compare the results of drying time and the final beverage quality of the product. The research was carried out at Fazenda Iracema, municipality of Machado - Minas Gerais, with mechanically harvested coffees from the cultivar Mundo Novo, with 80% maturation, and the treatments were: natural and washed coffee, with and without application of enzymatic complex and drying in suspended, concrete and mixed courtyards (initially in the yard and finished in rotary dryers), the enzyme complex dosage was 1 ml CNB + 2.5 ml CNA per liter of water, applied to 60 liters of coffee. The experimental design was in randomized blocks, in a 2 x 2 x 3 factorial scheme (2- types of “washed or natural” processing; 2- with and without enzymatic application; 3 - “suspended, concrete and drying” drying forms), with 4 repetitions per treatment, totaling 48 experimental plots. The coffees were dried to 11.5% humidity and evaluated by the SCAA. It was concluded that the use of LNF (CNA - CNB) enzymatic complex in the coffee drying process did not influence the final drying time results, nor did it influence the coffee beverage aroma attributes. The drying forms directly influence the drying time.Item Sensory quality of roasted coffee beans under different storage conditions(Editora UFLA, 2019-10) Nadaleti, Denis Henrique Silva; Rocha, Hully Alves; Mendonça, Luciana Maria Vieira Lopes; Mendonça, José Marcos Angélico de; Reis, Iêda Bruna dos; Evaristo, Carlos Henrique; Terra, Sávia Del ValeRoasted coffee is subject to loss of quality due to aging, and the intensity of these losses is influenced by packaging. The objective in this study was to evaluate the possible losses in the sensory quality of a specialty roasted coffee, stored in beans for 150 days in different packages and storage temperatures. The experiment was carried out in the Coffee Classification and Industrialization Laboratories of IFSULDEMINAS Campus Muzambinho. The coffee was roasted and after 48 hours it was packed in three different packages and kept stored at room temperature and refrigerated at 18ºC ± 1ºC for 150 days, with evaluations every 50 days, starting from zero time. The experimental design used was entirely randomized with 3 repetitions. Sensory evaluation was performed by three Q-Grader judges, according to the SCAA protocol. The data were evaluated using the SISVAR software, and when significance between treatments was detected, the regression and Scott-Knott tests were applied at the 5% probability level. The packaging used for storage did not interfere in the quality of the coffee. There was an interaction between temperature and storage time for the sensory attribute “body”. The quality decreased linearly with the storage time, from 86 to 80 points, to 84 days of storage.Item Effect of induced biological fermentations on coffee sensory quality(Editora UFLA, 2019-10) Cândido, Talita Amparo Tranches; Sepini, Pedro Pereira; Abrão, Polyana de Faria Cardoso; Oliveira, Reginaldo de; Campos, Kátia Alves; Paiva, Leandro CarlosQuality coffee consumption has been gradually increasing and having an impact on coffee prices not only for domestic but also for the foreign market. Different processing (preparation) methods of coffee will directly influence the quality of the final product. Taking this into consideration, this study aimed at evaluating sensory attributes of coffee submitted to biological fermentation. The experiment was carried out in a block design with 4 x 4 +1 factorial scheme. We evaluated the sensory attributes of coffee submitted to different fermentation treatments and times (8, 16, 24, 32 hours submerged in water, water + Saccharomyces cerevisiae, water + Saccharomyces bayanus, and water + Lactococcus lactis).