2003 Volume 52 Issue 1 Pages 34-41
In order to the practical use of radicidation of beet red, natural food colorant with low heat stability and high possibility of microbe contamination, we studied on the energy dependency and dose rate effect for the influence on functional properties of the beet red colorant.
For the elucidation of energy dependency, the γ-ray (1.33 MeV) and electron beams with different accelerating voltages (0.75, 1, 2.5, 5 and 10 MeV) were used. The dose rate effect was studied under the different dose rate by using γ-ray (0.723, 1.91 and 4.55 kGy/h) and electron beams with accelerating voltage of 10 MeV (1.0×103, 2.6×103, 7.0×103, 2.0×104 and 5.0×104kGy/h) .
The results obtained in this study showed that regardness of these energy and dose rate, the functional properties o f the beet red colorant were little affected by irradiation less than 25 kGy of ionizing radiations.