METHOD FOR ROASTING COFFEE BEAN AND METHOD FOR PRODUCING COFFEE EXTRACT SOLUTION FROM THE ROASTED COFFEE BEAN

摘要

PURPOSE: To readily provide a coffee having the original flavor and taste of the coffee to the utmost by roasting coffee beans in the contact state of the coffee beans with amorphous beads, grinding the roasted mixture and subsequently extracting the ground mixture. ;CONSTITUTION: Rigid glass beads each having a diameter of 1.3mm are charged in a 5l rotary oven, rotated at 25r.p.m, and simultaneously heated at 220°C. Coffee beans are charged into the rotary oven, rotate together with the glass beans at 220°C, and simultaneously roasted. The roasted coffee beans are frozen at -90°C in a freezing machine, and subsequently ground with a grinding machine into 20-28 mesh. The ground coffee beans are extracted with 90°C hot water to provide a coffee having the original flavor and taste of the coffee beans to the utmost.;COPYRIGHT: (C)1994,JPO&Japio