COFFEE BEAN CRACKING OCCURRENCE SCHEDULE PREDICTION METHOD, COFFEE BEAN CRACKING OCCURRENCE SCHEDULE PREDICTION DEVICE, COFFEE BEAN CRACKING DETECTION METHOD, COFFEE BEAN CRACKING DETECTION DEVICE, AND ROASTED COFFEE BEAN PRODUCTION METHOD

摘要

Provided is a method for easily and accurately detecting or predicting cracking occurrence when roasting coffee beans. A coffee bean cracking detection method according to the present invention comprises: a sound measurement step for temporally measuring sound generated from coffee beans that are being roasted; and a cracking detection step for detecting cracking of the coffee beans on the basis of sound pressure having a frequency in a range included within the range of 5-80 kHz in the sound. The sound measurement step is preferably started two minutes after the start of roasting. Preferably, the method further comprises an initial carbon monoxide level measurement step for measuring the level of carbon monoxide generated from coffee beans that are being roasted, at least until two minutes elapses from the start of the roasting.