TWO DIMENSIONAL PHOTOLUMINESCENCE IMAGING OF FOOD FOR NON-DESTRUCTIVE QUALITY CONTROL

T. Katsumata, H. Aizawa, Y. Kakinuma, E. Matashige, S. Komuro, T. Morikawa

Abstract

Non-destructive evaluation technique of the foods including starches has been developed based on photoluminescence from starches in the foods. The visible PL with broad peak at wavelength of λ = 462 nm are observed from various foods including starches, such as polished rice, flour and corn starch, under illumination of ultra-violet (UV) light at λ = 365 nm. Peak intensity is found to vary with the source and the breed of the specimens. PL images from starches also reveal the uniformity of the food products. Two-dimensional images of PL, which revealed the uniformity of foods under UV irradiation, are potentially useful for the evaluation and the quality control of the foods and starchy products.

Keywords

photoluminescence imaging, non-destructive evaluation, food

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PWC-2006-TC13-027u.pdf

DOI

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IMEKO TC

TC13 - Measurements in Biology and Medicine

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