Navegando por Autor "Simão, João Batista Pavesi"

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AVALIAÇÃO DE SUBSTRATOS E NÍVEIS DE SOMBREAMENTO NA FORMAÇÃO DE MUDAS DO CAFEEIRO ARÁBICA EM SACOLAS E TUBETES
(2009) Dardengo, Maria Christina Junger Delôgo; Azevedo, José Maria Gonçalves de; Reis, Edvaldo Fialho dos; Simão, João Batista Pavesi; Nery, Duilho Dalvi; Barboza, Rodolfo Brachini; Monteiro, Valdeberto de Castro; Embrapa - Café
Com objetivo de comparar o crescimento de mudas do cafeeiro arábica produzidas a pleno sol e sombreadas, utilizando-se diferentes recipientes e substratos, foi conduzido um experimento no período de maio a dezembro de 2008, no viveiro de produção de mudas do Campus de Alegre, Alegre-ES. O delineamento experimental adotado foi inteiramente casualizado, distribuído em esquema fatorial 5 x 2 x 2, com 2 repetições, sendo cada parcela constituída por sete plantas, totalizando-se 40 parcelas experimentais. Os fatores foram: dois tipos de recipientes (sacolas de polietileno e tubetes com capacidade de 120 mL), cinco tipos de substratos (S 1 - 70% de terra peneirada de subsolo + 30% de esterco de curral + químicos: calcário dolomítico, SS, KCl; S 2 - 70% de terra peneirada de subsolo + 30% de esterco de curral + químicos: calcário marinho, SS, KCl; S 3 - 70% de terra peneirada de subsolo + 30% de lodo de esgoto + químicos: calcário dolomítico, SS, KCl; S 4 - 70% de terra peneirada de subsolo + 30% de esterco de curral + químicos: Fosmag, SA, KCl, FTE-BR 12; S 5 - 75% de palha de café triturada + 25% de esterco de curral) e dois níveis de sombreamento (pleno sol e 50%). As mudas foram avaliadas seis meses após a semeadura, quando apresentavam o quarto par de folhas definitivas. Observou-se que o crescimento das plantas foi influenciado pelos diferentes substratos, níveis de sombreamento e recipientes. O maior crescimento em altura (13,71 cm), diâmetro do caule (2,86 mm) e matéria seca total (2,01 g) foi obtido em sacolas preenchidas com S 3 no nível de sombreamento de 50%.
CRESCIMENTO INICIAL DO CAFEEIRO CONILON FORMADO EM DOIS RECIPIENTES E DIFERENTES NÍVEIS DE SOMBREAMENTO, CONDUZIDO SEM IRRIGAÇÃO E IRRIGADO
(2011) Dardengo, Maria Christina Junger Delôgo; Sousa, Elias Fernandes de; Reis, Edvaldo Fialho dos; Simão, João Batista Pavesi; Azevedo, José Maria Gonçalves de; Embrapa - Café
Com objetivo de avaliar o crescimento inicial de plantas do cafeeiro conilon formadas em dois recipientes e diferentes níveis de sombreamento, conduzidas sem irrigação e irrigadas, foram instalados dois experimentos no setor de cafeicultura do IFES, Campus de Alegre, Alegre-ES, no período de abril de 2008 a abril de 2009. O delineamento experimental adotado foi em blocos casualizado, distribuído em esquema de parcelas subsubdivididas 2 x 4 x 7, utilizando-se três repetições para o sistema irrigado e não irrigado. Os recipientes usados foram sacolas de polietileno com aproximadamente 800 mL e tubetes de polietileno com capacidade de 120 mL. Os níveis de sombreamento usados foram 0% (Pleno Sol), 30%, 50% e 75%. As avaliações de crescimento foram realizadas a cada 60 dias e em sete épocas. O diâmetro da base do caule não foi influenciado pelo nível de sombreamento e sim a altura. O crescimento de plantas formadas em sacolas superou as de tubetes. Houve semelhança nas respostas das plantas irrigadas e não irrigadas com relação às variáveis climáticas de temperatura e precipitação. O período de crescimento vegetativo ativo coincidiu com temperaturas médias entre 21,2 e 26 0C e período de maior precipitação. Abaixo de 16,80C e acima de 29,30C o crescimento dos ramos diminuiu. O crescimento inicial do cafeeiro conilon irrigado foi superior ao conduzido sem irrigação.
Influence of flowering and additional fertilization on physical and sensory aspects of arabica coffee
(Universidade Federal Rural de Pernambuco, 2019) Rocha, Richardson Sales; Simão, João Batista Pavesi; Peluzio, João Batista Esteves; Ferrari, Jeferson Luiz; Gravina, Geraldo de Amaral
In Caparaó region, Brazil, in areas above 1000 m high, a second flowering (called late or from March) is common to take place, causing changes in the crop management for those intending to produce specialty coffees. The objective of this study was to evaluate physical and sensory aspects of arabica coffee from the Caparaó region, produced in traditional and late plantations in the same fields, using two fertilization regimes, one recommended by specific literature and another with the addition of extra fertilizers (33%), respecting the proportions amid them. The employed factorial analysis allowed identifying the interaction between the two levels of nutrition and the two harvests, for the analyzed attributes. The extra addition of fertilizers provided a reduction in the mean score of the fragrance/aroma and overall sensory attributes in the traditional harvest; and in the late harvest, it alone was responsible for raising the scores of the following sensory attributes: flavor, aftertaste, acidity, balance and total. The added extra amount of fertilizer, unassisted, altered the coffee physical aspects, reducing their defects/imperfections.
Into the minds of coffee consumers: perception, preference, and impact of information in the sensory analysis of specialty coffee
(Sociedade Brasileira de Ciência e Tecnologia de Alimentos, 2021) Bressani, Ana Paula Pereira; Martinez, Silvia Juliana; Batista, Nádia Nara; Simão, João Batista Pavesi; Schwan, Rosane Freitas
This study aimed to analyze the knowledge, perspectives, and preferences of consumers about specialty coffees and to investigate how information can influence the perception of taste and the sensory characteristics of consumers. A descriptive-analytic survey was conducted through a questionnaire in a digital format with 1005 respondents. Four trained Q-Grader tasters evaluated a sample of cherry coffee fermented. The Specialty Coffee Association developed the cupping protocol used. According to the perceived descriptors, a sensory analysis was performed with the same coffee with 101 consumers to evaluate the influence of information received before the analysis. The chocolate flavor is the most expected in coffee. However, the participants are willing to try different specialty coffees. The coffee has been considered excellent (85.15 points) by Q-Grader tasters and widely accepted by consumers. Check-all-that-Apply (CATA) test showed that consumers could be influenced by information. When the coffee has been presented without information, the consumers noticed a more caramel flavor. However, when the information has been added to the same coffee, the citric flavor was more noticeable. In conclusion, information on specialty coffees should be more widespread. Consumer’s expectations can be influenced by information, which in turn can modify their sensory perception.
Into the minds of coffee consumers: perception, preference, and impact of information in the sensory analysis of specialty coffee
(Sociedade Brasileira de Ciência e Tecnologia de Alimentos, 2021-02-22) Bressani, Ana Paula Pereira; Martinez, Silvia Juliana; Batista, Nádia Nara; Simão, João Batista Pavesi; Schwan, Rosane Freitas
This study aimed to analyze the knowledge, perspectives, and preferences of consumers about specialty coffees and to investigate how information can influence the perception of taste and the sensory characteristics of consumers. A descriptive-analytic survey was conducted through a questionnaire in a digital format with 1005 respondents. Four trained Q-Grader tasters evaluated a sample of cherry coffee fermented. The Specialty Coffee Association developed the cupping protocol used. According to the perceived descriptors, a sensory analysis was performed with the same coffee with 101 consumers to evaluate the influence of information received before the analysis. The chocolate flavor is the most expected in coffee. However, the participants are willing to try different specialty coffees. The coffee has been considered excellent (85.15 points) by Q-Grader tasters and widely accepted by consumers. Check-all-that-Apply (CATA) test showed that consumers could be influenced by information. When the coffee has been presented without information, the consumers noticed a more caramel flavor. However, when the information has been added to the same coffee, the citric flavor was more noticeable. In conclusion, information on specialty coffees should be more widespread. Consumer's expectations can be influenced by information, which in turn can modify their sensory perception.
Microbial communities and biochemical compounds involved in coffee fermentation from different altitudes of the Caparaó region
(Universidade Federal de Lavras, 2021-06-15) Martinez Gelvez, Silvia Juliana; Schwan, Rosane Freitas; Simão, João Batista Pavesi; Pylro, Victor Satler
Minas Gerais is the most coffee producing state of Brazil, mainly of Catuaí variety. After this state comes Espirito Santo, containing the Caparaó region known for its specialty coffees harvested in mountains located at altitudes from 700 to 1,400 m. The differences perceived in coffee during tasting derived from pre-and post-harvest factors. Among those factors are the producing regions, coffee variety, temperature, altitude, processing methods, and type of fermentation. As a result, those factors change either the fruits or beans chemical characteristics together with their microbiota. In this sense, the first article aimed to characterize microbiologically (target NGS) and chemically fermented coffees from different altitudes processed via natural. Altitude was an important variable that caused shifts in the microbial community and biochemical compounds content. Also, coffees from a lower altitude contained a high bacterial richness and volatile alcohols contents. While high altitude coffees contained high esters, aldehydes, and phenolics contents. The second article aimed to study the dominant communities and evaluate the effect of altitude in those communities and on the biochemical profile from fermented coffees processed via pulped natural. Low altitude coffees favored the richness of bacteria and fungi. The pulped natural process presented dominance of citric acid, volatile alcohols, and caffeine.
Specialty coffees fermented at different altitudes: Influence of yeast co-inoculation on chemical and sensory composition
(Universidade Federal de Lavras, 2021-04-26) Bressani, Ana Paula Pereira; Schwan, Rosane Freitas; Simão, João Batista Pavesi; Batista, Nádia Nara
Specialty coffees are gaining more space in the Brazilian market, and the changes in production, processing, marketing, and consumer culture are noticeable. Unquestionably, the use of selected starter cultures in the fermentation process improves the coffee quality. However, the microorganisms' behavior can be different depending on the variety, processing method, and altitude. Thus, this paper aims to (i) use metabolomics, chemical, and sensory methodologies to evaluate the quality of fermented coffees of the cultivar Catuaí vermelho IAC-44 at different altitudes (600 and 1,200 m) located in the Caparaó region. (ii) analyze consumers’ knowledge and perspectives on coffees and investigate how information can influence consumers’ sensory experience. For this, the coffee cherries were harvested manually and separated into batches of 20 kg, representing seven treatments plus control at each altitude. The starter cultures - Saccharomyces cerevisiae CCMA 0543, Candida parapsilosis CCMA 0544, and Torulospora delbrueckii CCMA 0684 - were inoculated, isolated, and in co-inoculation. The control was performed without inoculation. Fermentation of whole fruits lasted 72 h in closed bioreactors. Then, the coffees were transferred to the suspended terraces until 11- 12% moisture. Samples were collected and frozen for chemical analysis. We studied the improving coffee beverage quality cultivated at low altitudes through inoculation of yeast during fermentation in dry processing. The analyzes were performed using liquid and gas chromatography, Fourier transforms infrared spectroscopy (FTIR), and cup testing. Differences in chemical compounds were observed between the inoculated coffees and the control, both for green and roasted beans. Fermentation improved the quality of low-altitude coffees, and the co-inoculation of non-Saccharomyces yeasts (C. parapsilosis CCMA 0544 and T. delbrueckii CCMA 0684) had the highest sensory score (85), being the most suitable for this process. The second topic addressed in this work was the influence of fermentation with starter cultures concerning the bioactive, chemical, and sensory compounds of coffee produced at high altitudes. The content of total polyphenols and antioxidants is strongly correlated with the end of fermentation in a closed bioreactor and after roasting. The trigonelline content has a moderate and negative correlation with fermentation and roasting. Fruity, citric, and wine notes were found only in inoculated treatments. The co-inoculated with the three yeasts showed the highest sensory score (86.9). The third aspect addressed was understanding the perspectives and desires of coffee consumers through a questionnaire in a digital format with 1,005 participants. The chocolate flavor is still the most expected in specialty coffee. The Check-all-that-Apply (CATA) test was carried out with 101 consumers using the same coffee (without and with information). Sensory analysis showed that consumers could be influenced by information. Therefore, co-inoculation of yeasts in coffee fermentation is a promising alternative for low and high-altitude coffee. Also, specialty fermented coffees should be made more widely available to consumers.