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Updated: Apr 10, 2026

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Foodborne Pathogen Screening Using Magneto-fluorescent Nanosensor: Rapid Detection of E. Coli O157:H7
Published on: September 17, 2017
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Luminescent lanthanide graphene for detection of bacterial spores and cysteine
Yuzhen Wang1, Ying Li, Wenjin Qi
1Department of Nanomedicine, Houston, Methodist Hospital Research Institute, 6670 Bertner ave, Houston, Texas 77030, USA. ysong@houstonmethodist.org wenjincookie@163.com.
Abstract:
Here, we describe a new approach for preparation of luminescent lanthanide graphene in the presence of dipicolinic acid (DPA). Hg(2+) can competitively bind with DPA which greatly quenches the fluorescence and the resultant complex is able to selectively and sensitively detect cysteine with a detection limit of 5 nM.

