Method and apparatus for measuring ash content of food stuff

Details Method and apparatus for measuring ash content of food stuff Method and apparatus for measuring ash content of food stuff

G - Physics

01

N

G01N 33/02 (2006.01) G01N 21/27 (2006.01) G01N 21/33 (2006.01) G01N 21/35 (2006.01) G01N 37/00 (2006.01)

Patent

CA 2217182

A method for measuring the ash content of food stuff is carried out by 1) preparing, with respect to food stuff samples whose ash content values are known, a calibration curve by a non-linear analysis of absorbance values and the known ash content of each sample, the absorbance values being obtained by irradiating light on the sample having particular wavelengths containing at least an ultraviolet ray band wavelength, the particular wavelength being specific to organic ingredients well coupled to inorganic ingredients which result in the ash content, and 2) deriving, with respect to a sample whose ash content value is unknown, an ash content value of the sample from absorbance value obtained by irradiating, on the sample, light having the particular wavelengths containing at least the ultraviolet ray band wavelength and from the calibration curve prepared in advance by the non-linear analysis. An apparatus for carrying out the method includes a light source section, a photo detecting section, a storing section for storing them calibration curve, and a calculation section for calculating, with respect to a sample whose ash content value is unknown, the ash content value based on the absorbance values and the calibration curve stored in the storing section.

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