| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a method and an apparatus in which the sugar content in the central part of an equatorial part can be measured by applying a specific expression to the total sugar content in the lower part of the equatorial part of a fruit or a vegetable and to a quadratic differential absorbance. SOLUTION: Light from a lamp 4 is transmitted through an object 1 to be inspected, transmitted light is radiated from an opening part 10 in a light shielding bucket 2 so as to be received by a sensor 12, the absorption spectrum of the transmitted light is measured, and the total sugar content in the lower part of an equatorial part on the object 1 to be inspected can be detected. In addition, the quadratic differential absorbance of the absorption spectrum of the transmitted light is computed in a computing part. In addition, it is empirically clear that an irregularity in the color of sarcocarp corresponds to an irregularity in the sugar content at the inside of the sarcocarp. A linear relationship exists between the difference between the sugar content in the central part of the equatorial part and the total sugar content in the lower part of the equatorial part and the quadratic differential absorbance. As a result, when the quadratic differential absorbance is taken into account, a specific expression of the sugar content in the central part of the equatorial part = the total sugrar content in the lower part of the equatorial part + (C1×the quadratic differential absorbance×C2 ) is established, where C1 and C2 represent respective constants. As a result, when the expression is applied to the total sugrar content in the lower part of the equatorial part and to the quadratic differential absorbance, the sugar content in the central part of the equatorial part can be found with good accuracy.</p> |
