Jiaxing Chen, Xiaoping Ji

(College of Chemistry and Chemical Engineering, Guangzhou University)

Abstract：

L-cysteine (L-Cys) is one of the small sulfhydryl-containing amino acids that plays a key role in many physiological and pathological processes, which is essential on monitoring L-Cys levels for clinical diagnosis and understanding of physiological processes in the human body. Therefore, the development of accurate, simple, and rapid L-Cys assays has received a lot of attention from researchers. This paper introduces the application of optical sensors in the detection of L-Cys in recent years, focusing on L-Cys colorimetric sensors constructed by different kinds of nanomaterials and L-Cys fluorescent sensors constructed by different molecular probes, and comparison with the detection performance of different colorimetric sensors and different fluorescent sensors.

Key Words：

L-cysteine; colorimetric sensors; fluorescent sensors; nanomaterials; molecular probes; applications