bacteria. The probes are composed of a bright phenoxy‐dioxetane luminophore masked by triggering group, which is activated by a specific bacterial enzyme, and could detect their corresponding bacteria with an LOD value of about 600‐fold lower than that of fluorescent probes. Moreover, we were able to detect a minimum of 10 Salmonella cells within 6 h incubation. The assay allows for bacterial enrichment
用当前的诊断方法检测食品样品中的沙门氏菌和单核细胞增生李斯特菌需要相对较长的时间(2-6天)。此外,由于需要实验室设施,在工厂现场对这些病原体进行环境监测的能力受到限制。在这里,我们报告了新的
化学发光探针,用于活病原体细菌的超灵敏直接检测。探针由被触发基团掩盖的明亮的苯氧基-二氧杂
环丁烷发光体组成,该发光体被特定的细菌酶激活,可以检测其相应的细菌,其LOD值比荧光探针低约600倍。此外,我们能够检测到至少10株沙门氏菌细胞在6小时内孵育。该测定法无需进一步制备样品即可在一个试管中进行细菌富集和检测。我们预计,该设计策略将用于为与特定细菌检测和即时诊断相关的其他酶制备类似的
化学发光探针。