<b>Effects of nitrogen and potassium on the chemical composition of coffee beans and on beverage quality

  • Junia Maria Clemente Universidade Federal de Viçosa
  • Herminia Emilia Prieto Martinez UFV
  • Leonardo Corrêa Alves Universidade Federal de Viçosa
  • Fernando Luíz Finger Universidade Federal de Viçosa
  • Paulo Roberto Cecon Universidade Federal de Viçosa

Resumo

The ratio of nitrogen (N) to potassium (K) is important in the production of specialty coffees because the relative amounts of N and K can either suppress the formation or increase the concentration of compounds that are essential to the flavor and aroma of specialty coffees. The purpose of this study was to evaluate the effect of different N:K ratios (w/w) and K doses on the cup quality of coffee. The concentrations of chemical compounds essentials to achieve good flavor and aroma, the N and K contents, and the caffeine contents of coffee leaves and beans were evaluated in this study. The N:K ratio and the K dose were found to be important factors in cup quality, the best quality corresponding to an N:K ratio of 1:1.56. The best cup quality was obtained from beans with greater PPO activity, caffeine, color index, and sugars and lower total tritatable acidity, pH, electrical conductivity and leached potassium.

 

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Biografia do Autor

Junia Maria Clemente, Universidade Federal de Viçosa
Engenheira-agrônoma, estudante de doutorado do curso de pós-graduação em Fitotecnia da UFV.
Herminia Emilia Prieto Martinez, UFV
Engenheira-agrônoma, doutora em Solos e Nutrição de Plantas, Professora do Departamento de Fitotecnia da UFV.
Leonardo Corrêa Alves, Universidade Federal de Viçosa
Engenheiro-agrônomo, estudante de mestrado do curso de pós-graduação em Fitotecnia da UFV.
Fernando Luíz Finger, Universidade Federal de Viçosa
Engenheiro-agrônomo, doutor, Professor do Departamento de Fitotecnia da UFV.
Paulo Roberto Cecon, Universidade Federal de Viçosa
Engenheiro-agrônomo, doutor, Professor do Departamento de Informática da UFV.
Publicado
2015-08-03
Como Citar
Clemente, J. M., Martinez, H. E. P., Alves, L. C., Finger, F. L., & Cecon, P. R. (2015). <b&gt;Effects of nitrogen and potassium on the chemical composition of coffee beans and on beverage quality. Acta Scientiarum. Agronomy, 37(3), 297-305. https://doi.org/10.4025/actasciagron.v37i3.19063
Seção
Fitotecnia

 

2.0
2019CiteScore
 
 
60th percentile
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2.0
2019CiteScore
 
 
60th percentile
Powered by  Scopus