Coffee Science
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3355
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Resultados da Pesquisa
Item Denomination of origin ‘Café del Huila’ and dynamics of coffee growing in Colombia(Editora UFLA, 2021) Trujillo, Heiber Andres; Mitidieri, Francisco José; Hashimoto, Elizabeth MieThe state of Huila in Colombia has a Geographical Indication –IG through the denomination of origin - DO ‘Café del Huila’. Although these protection strategies have been promoted, no concrete studies have been reported on aspects of their implementation in the coffee agribusiness. The main goal of this research was to study the coffee with the denomination of origin ‘Café del Huila’ from 2010 to the present, through economic and performance indicators, seeking to identify the main impacts in this sector of agriculture. The research was carried out in two stages: In stage I - an analysis of the area indicators and coffee production in Colombia and an analysis of the performance of coffee growing in the state of Huila related to; municipalities, producers, farms and area. In stage II - the characterization of the denomination of origin was carried out in accordance with the methodology proposed by Food and Agriculture Organization of the United Nations - FAO (2018) and analysis of its implementation. The coffee agribusiness in Colombia showed variable dynamics in the different regions of the country, with a tendency to decrease the planted area and variability of production. The state of Huila showed significant growth both in the area planted and in production, which place it as one of the main coffee producers in the country. However, this sector presents few indicators of impact on the implementation of the geographical indication through the appellation of origin.Item Factors related to coffee quality, based on the “Cup of Excellence” contest in Mexico(Editora UFLA, 2021) Gumecindo-Alejo, Ana Laura; Sánchez-Landero, Luz Amelia; Ortiz-Ceballos, Gustavo Celestino; Cerdán-Cabrera, Carlos Roberto; Alvarado-Castillo, GerardoCoffee farming in Mexico is an activity of great economic, social, cultural, and environmental importance. One of the strategies for obtaining better prices is so-called “specialty coffees”, whose quality is evaluated through the “cup of excellence” contest. The aim of this work was to identify if there are factors related to the quality of coffee, based on the data provided by this contest. Information was obtained for the period 2012 to 2019 (since the event was suspended in 2020), but given the heterogeneity in the data, exclusion, and inclusion criteria were applied, examining only the years 2017 to 2019. Descriptive analyses show that, in Mexico, the coffee producing states of Veracruz and Chiapas predominate the highest scores, possibly because they are regions with the highest presence of biodiversity, which favors the quality of the coffee. A simple linear regression model also noted that quantitative variables (altitude, temperature, and precipitation) do not affect cup quality. Finally, a square chi analysis showed that the factors that affect the score are the process and mixing of varieties, which establish differences in the sensory characteristics of coffee, observing dependence between the two. It is concluded that the latter influence the score, where the washing process is best suited for coffees with an extraordinary quality profile, as well as the use of one or three varieties (particularly Arabica type) and that environmental and site components do not have a decisive effect on coffee cup quality.Item Functional diversity of microbial communities associated with fermentation processes in coffee (Coffea arabica L.)(Editora UFLA, 2021) Peñuela-Martínez, Aida Esther; Romero-Tabarez, Magally; Zapata-Zapata, Arley DavidMucilage fermentation conducted to degrade and remove coffee mucilage, is an important stage to also define coffee quality, but each microorganism’s contribution to the final quality is not yet known. Therefore, tools are needed to easily identify this relationship in order to be used to enhance coffee quality. The present manuscript describes the behavior of the microbial communities present in fermentations conducted under various conditions, which produced differences in the sensory quality of the coffee as assessed by the community-level catabolic profile approach. The coffee samples came from six different fermentation processes that produced coffee in two quality classifications according to the Specialty Coffee Association (SCA) protocol: very good and excellent. Functional diversity of the microbial communities and substrate consumption were compared through analysis of variance. The multidimensional scaling analysis was used to identify the similarities or differences between treatments. The indices of functional diversity revealed significant differences and direct proportionality with the quality rating. Diversity index (H) was between 2.09 and 2.71 and Evenness was between 1.75 and 2.21. The consumption of groups of substrates was different between fermentations, especially in carbohydrates and carboxylic acids, and the greatest consumption of these was found in the excellent-quality coffee. The different fermentative processes evaluated by this technique showed a high metabolic activity related to the great diversity of substrates given to the microbial communities and microorganisms involved, causing reactions that had influence on the final quality of the product.Item Physicochemical, microbiological, and sensory analysis of fermented coffee from Sierra Nevada of Santa Marta, Colombia(Editora UFLA, 2020) Cruz-O’Byrne, Rosmery; Piraneque-Gambasica, Nelson; Aguirre-Forero, SoniaThe evaluation of the physicochemical (pH, degrees Brix, and temperature), microbiological (fungi, yeasts, and bacteria), and sensory characteristics (sensory attributes, score, and quality classification) of coffee wet fermentation in the Sierra Nevada of Santa Marta (SNSM), Colombia, was carried out to understand its dynamics and the correlation that exists between them. The fermentation process lasted 36 hours and samples were taken every six hours. The pH and degrees Brix gradually decreased in the fermentation time and showed a high dependence on each other. In 36 hours, the pH went from 5.37 to 3.96 and the degrees Brix from 6.53 to 4.30 °Bx. Fungi had the most abundant population throughout the fermentation process compared to bacteria and yeasts. The beverages obtained showed a high quality where the classification of excellent specialty coffees prevailed. The highest beverage quality was characterized by its sweetness, high acidity, floral notes flavored with lemongrass and cardamom, it was obtained at 18 hours of fermentation related to the highest fungi (6.92 log CFU.g-1) and yeast population (6.01 log CFU.g-1) and the lowest bacteria population (3.85 log CFU.g-1). Evaluating the physicochemical, microbiological, and sensory characteristics of fermented coffee in the SNSM is important in generating specific knowledge related to the fermentation process and coffee quality in the region and constitutes a tool for future research.Item Sensory quality prediction of coffee assessed by physicochemical parameters and Multivariate model(Editora UFLA, 2020) Domingues, Laricia Oliveira Cardoso; Garcia, Aline de Oliveira; Ferreira, Marcia Miguel Castro; Morgano, Marcelo AntônioBeverages from roasted coffee can be classified according to their sensory quality into Gourmet, Superior, Traditional, and not recommended for supply coffees. However, the sensory evaluation of coffee has been questioned as it can induce a subjective bias, since the assessors may be influenced by psychological, physiological, and/or emotional factors. Therefore, the aim of this study was to develop multivariate models for predicting the overall quality of Gourmet, Superior, and Traditional coffees, based on the physical and physicochemical parameters. One hundred and eight ground roasted coffee samples were evaluated for particle size, degree of roasting, histological identification, moisture, ash, aqueous extract, soluble solids (Brix), pH, and sensory profiling. All categories presented fine grinding. No significant differences were observed in the moisture content and soluble solids (Brix) of Gourmet, Superior, Traditional, not recommended for supply coffee samples. The Traditional and not recommended for supply presented higher levels of aqueous extract, ash, and pH. Light degree of roast and higher acidity values were observed with the increase in coffee quality grades. The results of the physical and physicochemical parameters and the principal component analysis allowed the separation of coffees into only two classes: high-quality (Gourmet and Superior) and low-quality (Traditional and not recommended). Furthermore, the one-class classification (OCC) method showed good sensitivity and was able to satisfactorily distinguish the Gourmet coffee samples from the other samples, in this way, this model can be used to corroborate but not replace the sensory analysis.