Ultrasensitive molecularly imprinted electrochemical sensor for in situ determination of serine in plants
文献类型： 外文期刊
作者： Wang, Yueyue 1 ; Hou, Peichen 1 ; Dong, Shaohua 1 ; Yu, Wenxin 1 ; Liu, Tianyang 1 ; Luo, Bin 1 ; Li, Aixue 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Intelligent Equipment Res Ctr, Beijing 100097, Peoples R China
关键词： Molecularly imprinted polymer; Serine; In situ; Electrochemical sensor
期刊名称：TALANTA （ 影响因子：6.1； 五年影响因子：5.5 ）
ISSN： 0039-9140
年卷期： 2025 年 295 卷
页码：
收录情况： SCI
摘要： Serine (SER) is a functional amino acid that promotes plant growth and development, and plays an important role in plant stress response. In this paper, an ultrasensitive electrochemical sensor based on molecularly imprinted method (MIP) has been constructed to detect SER in plants in situ and in vivo. Composite material of titanium carbide (MXene), zeolitic imidazolate frameworks (ZIF-8) and thionin (Thi) was used to improve the conductivity and electroactive area of the sensor. Dopamine (DA) was used as the functional monomer to form the MIP. The prepared MIP/Thi-ZIF-8-MXene/SPE sensor showed an ultra-sensitive SER detection response with a detection range of 1 nM-4 mM (R2 = 0.995) and a detection limit of 0.69 nM (S/N = 3). It was also used to detect free SER in lettuce leaves under salt stress, which verified the practicality of the sensor. The MIP-based SER sensor has important application prospects for detecting the physiological status of plants in situ.
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