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Evaluation of the bitter taste in organic coffee (Coffea arabica L.) beverage using time-intensity analysis

Nowadays consumers are concerned with purchasing products which are environmentally - friendly and socially - oriented and, consequently, healthy. Thus, the commercialization of organic products has expanded worldwide. Coffee is traditionally cultivated in Brazil and widely accepted (70% of the population drink coffee daily). It is also organically cultivated. This work aimed to evaluate the temporal characteristics of the bitter taste in organic coffee drink. Four organic coffee brands (ORG-1, ORG-2, ORG-3 and ORG-4) and one conventional (CON) brand were evaluated by Time-Intensity Analysis. Seven selected and trained tasters evaluated the coffee samples using the program "Sistema de Coleta de Dados Tempo-Intensidade-SCDTI" (TIME-INTENSITY DATA COLLECTION SYSTEM-TIDCS) for Windows. The results were statistically analyzed by Analysis of Variance (ANOVA), Duncan's tests and Principal Component Analysis (PCA). The ORG-3 brand showed higher maximum intensity (Imax), presenting a significant difference (p<0.05), compared to the other samples. No significant differences were found for ORG-1, ORG-2, ORG-4 and CON (p>0.05) regarding the six appraised parameters.

coffee; organic; time-intensity analysis; sensory analysis


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