| 摘要 |
<p>PURPOSE:To obtain a measured taste value accurately, by analyzing a component affecting taste of rice based on the quantity of reflected and transmission light from a sample when irradiated with near infrared rays to add a taste decision factor to the results. CONSTITUTION:Rice is crushed into fine particles passing through rollers 20-23 and a sample in a sample container 33 is irradiated with near infrared rays from a reflection mirror 5 after irradiation light from a light source 4 passes through a filter 6. The quantity of transmission light is detected with a quantity of transmission light detector 9C which the quantity of light reflected on an integrating sphere 7 from the sample is detected with quantity of reflected light detectors 9A and 9B and detection values thereof are fed to a controller 59. At the same time, the filter 6 is turned sequentially with the operation of a motor 10 to obtain characteristic of a near infrared ray wavelength area in a wavelength range of 1,200nm-2,400nm. The temperature of a sample within a sample container 33 is detected with a temperature detector 65 to be fed to the controller 59. An arithmetic unit 60 of the controller 59 determines content of magnesium or potassium as main component affecting taste of rice from the detection values to compute a measured taste value from a component analysis factor, a temperature correction value and a taste decision factor.</p> |
