Qualidade do café de chao (Coffea arabica L.) com diferentes porcentagens de graos brocados

Fruits of Coffee (Coffea arabica L.) of the cultivar Mundo Novo were obtained from crops in the town of Cassia, state of Minas Gerais - Brazil. 600 liters collected from the ground of "sweeping" coffee samples which underwent drying on cement flat till the beans reached from 11 to 13 percent of moisture. Next, the processing and later separation of the beans both insect-damaged and normal was proceeded. The fruits which were then grouped in different percentages of the insect-damaged (Hypotenemus hampei), separated by weight, amounting to 6 treatments (percentage insect-damaged and percentage insect not damaged): 100/0; 80/20; 60/40; 50/50; 20/80 e 0/100. Were showed 3 replicates with 2.0 kg. For further chemical analyses, the physical-chemical ones being performed on whole beans with their respective percentages of insect-damaged and normal beans. Different behaviors in the analyzed parameters were found. Leaching of potassium ions, electrical conductivity and titrable acidity increased but the content of total phenolics, weight of 100 beans, caffeine and polyphenoloxidase activity decreased with increase in the percentage of insect-damaged beans with the normal ones, connoting quality loss. The grading by the cup test was 'hard beverage" from 0 to 50 percent of insect damaged beans with 80 to 100 percent being graded as 'riada beverage".