Jiaqi Tian, Qiancheng Tu, Miaoyun Li, Lijun Zhao, Yaodi Zhu, Jong-Hoon Lee, Zhengyan Gai, Gaiming Zhao, Yangyang Ma
Foodborne spores are ubiquitous with extremely strong resistance, and pose a serious threat to food safety and human health. Therefore, rapid, sensitive, and selective detection of spores are crucial. In this study, a fluorescent probe was developed based on lanthanide ion (Eu3+ )-labeled nano-silver-modified graphene oxide (GO-AgNPs-Eu3+ ) for the detection of 2,6-dipicolinic acid (DPA), a biomarker unique to spores, to allow quantitative spores detection. The GO-AgNPs-Eu3+ nano-fluorescent probe was loaded onto a polyvinylidene fluoride microfiltration membrane, and a smartphone-assisted portable GO-AgNPs-Eu3+ nanoparticles-based paper visual sensor was designed for rapid on-site quantitative and real-time online detection of spores...
March 30, 2024: Food chemistry: X