发光细菌传感器在纳米氧化物紫外屏蔽性能评估分析中的应用研究

本文发现发光细菌在紫外光照射下能够被杀死，其荧光强度相应地发生降低，而在纳米氧化物的保护下，细菌荧光强度的降低得到了抑制，因此发光细菌可以被用来分析和评价纳米氧化物的紫外屏蔽性能。青海弧菌Q67是发光细菌的一种，本文研究了不同浓度及不同种类的纳米氧化物对本发光细菌在分别受到UVA、UVB、UVC紫外光照射下的发光强度的影响，根据细菌发光强度降低的相对值建立了一种分析和评价纳米氧化物的紫外屏蔽性能的方法。该方法可以对纳米氧化物在UVA、UVB、UVC区的紫外屏蔽性能进行评价，同时也为化妆品等行业提供了一种对防晒剂紫外屏蔽性能评估的有效方法。

Study on the Application of Luminescent Bacteria to the Evaluation and Analysis of the UV-shielding Property of Nanooxide

In this paper, it was found that luminescent bacteria could be killed by UV light and the bioluminescence intensity would be decreased. With the protection of nanooxide, the decrease of the bioluminescence could be supressed, therefore luminescent bacteria could be utilized to analyze and evaluate the UV-shielding property of nanooxide. Vibrio-qinghaiensis Q67, a kind of luminescent bacteria, was used here to study the influence of different kinds and concentrations of nanooxide on the luminescence intensity of bacteria, which were illuminated by UVA, UVB or UVC light, respectively. A method was established according to the relative value of the decrease of the luminescence intensity, which can be used to analyze and evaluate the UV-shielding property of nanooxide against UVA, UVB or UVC light, respectively. It also provided an effective way to analyze and evaluate the UV-shielding property of sunscreen for cosmetic and other industries.