IMPACT OF DRYING METHODS OVER THE GERMINATIVE POTENTIAL OF CONILON COFFEE OF LATE MATURATION
DOI:
https://doi.org/10.25186/cs.v14i4.1624Keywords:
Coffea canephora, Germination, Propagation, Seeds, Storage, Water contentAbstract
This study aimed to evaluate the effect of different drying methods (regarding temperature and drying time) over the seed moisture and germination of seeds of Coffea canephora, harvested from genotypes of late maturation. For this end, seeds from selected genotypes were harvested and dried using two different methods: drying at 25 ˚C with natural circulation of air and drying at 35 ˚C with artificial circulation of air. The seeds were evaluated to quantify the loss of moisture content, and their germinative potential was assessed by parameters of germination speed, and the proportion of seedlings with healthy germination originated from them. The results show it is possible to apply different drying methods; using different systems, temperatures and times of exposure; to decrease the moisture content of seeds of C. canephora, from 50% (freshly harvested seeds from genotypes of late maturation, in July) to under 18% (dried seeds). Even if the initial stages of the drying process, while the seeds still present high moisture content, are similar for both methods, the method with artificial circulation of air at 35 ˚C promotes the drying speed and is able to achieve the lower levels of seed moisture using less than half of the time required by method with natural circulation of air at 25 ˚C. This faster moisture removal, however, has negative impacts over the germinative potential of the seeds, which are not observed for seeds subjected to the slow natural drying.
References
ALVES, G. E. et al. Qualidade fisiológica e sensorial do café arábica submetido a diferentes temperaturas e fluxos de ar de secagem. Acta Scientiarum. Agronomy, Maringá, v. 39, n. 2, p. 225-233, 2017.
BORÉM, F. M. et al. Avaliação sensorial do café cereja descascado, armazenado sob atmosfera artificial e convencional. Ciência e Agrotecnologia, Lavras, v. 32, n. 6, p. 1724-1729, 2008.
BRAGANÇA, S. M. et al. Variedades clonais de café Conilon para o Estado do Espirito Santo. Pesquisa Agropecuaria Brasileira, Brasília, v. 36, n. 5, p. 765-770, 2001.
BRASIL. Regras para análise de sementes. Brasília: Ministério da Agricultura, Pecuária e Abastecimento. Secretaria de Defesa Agropecuária, 2009. 399p.
CONAB – COMPANHIA NACIONLA DE ABASTECIMENTO. Acompanhamento da safra brasileira: café. Brasília: Conab, 2019. 61p.
CORADI, P. C.; BORÉM, F. M.; REINATO, C. H. Coffee cherries drying process and the influence of environment relative humidity in the mathematical modeling, moisture content, and enthalpy of vaporization. Revista Energia na Agricultura, Botucatú, v. 29, n. 2, p. 148-157, 2014.
CORADI, P. C. et al. Effect of drying and storage conditions on the quality of natural and washed coffee. Coffee Science, Lavras, v. 2, n. 1, p. 38-47, 2007.
CORRÊA, P. C. et al. Modelagem matemática e determinação das propriedades termodinâmicas do café (Coffea arabica L.) durante o processo de secagem. Revista Ceres, Viçosa, v. 57, n. 5, p. 595-601, (2010).
CORRÊA, P. C.; RESENDE, O.; RIBEIRO, D. M. Drying characteristics and kinetics of coffee berry. Revista Brasileira de Produtos Agroindustriais, Campina Grande, v. 8, n. 1, p. 1-10, 2006.
CRUZ, C. D. Genes – software para análise de dados em estatística experimental e em genética quantitativa. Acta Scientiarum. Agronomy, Maringá, v. 35, n. 3, p. 271-276, 2013.
DÍAZ-DE-CERIO, E. et al. Analytical approaches in coffee quality control. In: GRUMEZESCU, A.; HOLBAN, A. M. Caffeinated and cocoa based beverages. Cambridge: Elsevier/Woodhead, 2019. p. 285-336.
FERRÃO, R. G. et al. Conilon coffee. 3. ed. Vitória: Incaper, 2019. 974p.
FLAMBEAU, K. J.; YOON, J. Characterization of raw and roasted fully washed specialty Bourbon cultivar of Coffea arabica from major coffee growing areas in Rwanda. Food Engineering Progress, Gyeonggi, v. 22, n. 2, p. 89-99, 2018.
HAMEED, A. et al. Farm to consumer: factors affecting the organoleptic characteristics of coffee. II: postharvest processing factors. Comprehensive Reviews in Food Science and Food Safety, Chicago, v. 17, n. 5, p. 1184-1237, 2018.
KOTTEK, M. World map of the Köppen-Geiger climate classification updated. Meteorologische Zeitschrift, Stuttgart, v. 15, n. 3, p. 259-263, 2006.
LASHERMES, P. et al. Inheritance and genetic mapping of self-incompatibility in Coffea canephora Pierre. Theoretical and Applied Genetics, Stuttgart, v. 93, n. 3, p. 458-462, 1996.
MAGUIRE, J. D. Speed of germination-aid in selection and evaluation for seedling emergence and vigor. Crop Science, v. 2, n. 1, p. 176-177, 1962.
PIMENTA, C. J.; ANGÉLICO, C. L.; CHALFOUN, S. M. Challengs in coffee quality: cultural, chemical and microbiological aspects. Ciencia e Agrotecnologia, Lavras, v. 42, n. 4, p. 337-349, 2018.
REIS, P. R.; CUNHA, R. L.; CARVALHO, G. R. Café arábica: da pós-colheita ao consumo. Lavras: Epamig, 2011. 734p.
RESENDE, O. Cinética da secagem de clones de café (Coffea canephora Pierre) em terreiro de chão batido. Acta Amazonica, Manaus, v. 40, n. 2, p. 247-255, 2010.
SAATH, R. Alterações na composição química e sensorial de café (Coffea arabica L.) nos processos pós-colheita. Revista Energia na Agricultura, Botucatú, v. 27, n. 2, p. 96-112, 2012.
SIQUEIRA, V. C. et al. Drying kinetics of processed natural coffee with high moisture content. Coffee Science, Lavras, v. 12, n. 3, p. 400-409, 2017.
SIQUEIRA, V. C. et al. Drying of hulled naturally processed coffee with high moisture content and its impacts on quality. African Journal of Agricultural Research, Sapele, v. 11, n. 31, p. 2903-2911, 2016.
TAVEIRA, J. H. S. et al. Perfis proteicos e desempenho fisiológico de sementes de café submetidas a diferentes métodos de processamento e secagem. Pesquisa Agropecuaria Brasileira, Brasília, v. 47, n. 10, p. 1511-1517, 2012.
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