Ultra-weak bioluminescence and vigour of irradiated rice

Detection of the irradiation dose and the vigour of irradiated rice based on the ultra-weak luminescent analysis is one of the promising analytical detection methods. Rough rice and head rice flour were used in this research for ultra-weak luminescent analysis. The bioluminescence intensity of the rough rice was different at varying irradiation doses and storage time. The trend of the differences was consistent with the germination rates of the irradiated rough rice. The changes of the bioluminescence intensity and the germination rate of the irradiated rough rice at diverse irradiation doses and storage time were due to the damage to the rice embryo caused by irradiation and the self-repair function of the embryo during storage. As a result, the ultra-weak luminescent analysis cannot detect the dose of the irradiation treatment on rice, but it can be used to detect the vigour of the irradiated rice. Experimental results show that the irradiation dose has a highly significant effect on the bioluminescence intensity of the rough rice flour when sucrose was added.