Color sorter for sorting out moldy pulse

摘要

A pulse color sorter which permits removal of internally and externally moldy pulse having afuratoxine as decomposition product is disclosed. The pulse color sorter comprises a first detector (20) which provides a first (S1) and a second detection signal (S2) according to dispersed and transmitted light having two different wavelengths (for instance 700 and 1,100 nm) with different contents of information due to the separation of wavelengths, a second detector (30) which provides a third detection signal (S3) according to reflected light, and a controller (50) which calculates division of the first and second detection signals from the first detector, compares the resultant value calculated to a first predetermined threshold value while also compares the third signal from the second detector to a second threshold value, and outputs an eject signal if either of the compared signals is beyond the corresponding threshold value. According to the eject signal, corresponding defective pulse is forcibly ejected. Since the judgment as to moldy pulse is done on the basis of the division of the first and second detection signals, accurate judgment is obtainable irrespective of the sizes of individual pieces of pulse. IMAGE