signal probe
Recently Published Documents


TOTAL DOCUMENTS

84
(FIVE YEARS 30)

H-INDEX

18
(FIVE YEARS 7)

The Analyst ◽  
2022 ◽  
Author(s):  
Niu Li ◽  
Xiaoxue Xi ◽  
Junlun Zhu ◽  
Xiaowei Wu ◽  
Xiuhua Zhang ◽  
...  

Nanozyme is a kind of nanomaterial with enzymatic activity, which has attracted wide attention in signal probe fields owing to its good catalytic activity and stability. Herein, we designed gold@platinum...


Sensors ◽  
2021 ◽  
Vol 22 (1) ◽  
pp. 8
Author(s):  
Xufang Huang ◽  
Wei Sheng ◽  
Haonan Chen ◽  
Biao Zhang ◽  
Na Huang ◽  
...  

A competitive fluorescence immunoassay for the quantitative detection of 2-amino-3-methylimidazo [4, 5-f] quinoline (IQ) in pan-fried meat patties was developed, using magnetic nanoparticles coupled with coating antigen as the capture probe and anti-IQ antibody coupled with NaYF4: Yb, Er upconversion nanoparticles as the signal probe. Under optimal conditionals, the wide detection range for IQ in phosphate buffer saline is from 0.01 to 100 μg·L−1 (R2 = 0.991) with a detection limit of 0.007 μg·L−1. This proposed method has been applied to detect IQ in two different types of pan-fried meat patties at varying frying times, and the IQ content in chicken patties and fish patties are 2.11–3.47 μg·kg−1 and 1.35–2.85 μg·kg−1, respectively. These results are consistent with that of the ultraperformance liquid chromatography-tandem mass spectrometry. In summary, this method can serve as a sensitive and specific test tool for the determination of IQ in processed meat.


Talanta ◽  
2021 ◽  
pp. 123151
Author(s):  
Wenting Cheng ◽  
Jiehua Ma ◽  
Qinfang Tao ◽  
Khan Adeel ◽  
Liangliang Xiang ◽  
...  

2021 ◽  
Vol 341 ◽  
pp. 130032
Author(s):  
Xiao Wang ◽  
Xiaochen Liao ◽  
Lisha Mei ◽  
Mengmeng Zhang ◽  
Siyu Chen ◽  
...  

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2243
Author(s):  
Xiaoyan Wen ◽  
Qingwen Huang ◽  
Dongxia Nie ◽  
Xiuying Zhao ◽  
Haojie Cao ◽  
...  

Deoxynivalenol (DON) is one of the most common mycotoxins in grains, causing gastrointestinal inflammation, neurotoxicity, hepatotoxicity and embryotoxicity, even at a low quantity. In this study, a facile electrochemical aptasensor was established for the rapid and sensitive determination of DON based on a multifunctional N-doped Cu-metallic organic framework (N–Cu–MOF) nanomaterial. The N–Cu–MOF, with a large specific surface area and good electrical conductivity, served not only as an optimal electrical signal probe but also as an effective supporting substrate for stabilizing aptamers through the interactions of amino (-NH2) and copper. Under the optimal conditions, the proposed sensor provided a wide linear concentration range of 0.02–20 ng mL−1 (R2 = 0.994), showing high sensitivity, with a lower detection limit of 0.008 ng mL−1, and good selectivity. The sensor’s effectiveness was also verified in real spiked wheat samples with satisfactory recoveries of 95.6–105.9%. The current work provides a flexible approach for the rapid and sensitive analysis of highly toxic DON in food samples and may also be easily extended to detect other hazardous substances with alternative target-recognition aptamers.


2021 ◽  
Author(s):  
Xuelian Xiang ◽  
Yanlin Wang ◽  
Yanhui Zhang ◽  
Ruo Yuan ◽  
Shangping Wei

Herein, bismuth oxyiodide (Bi5O7I) was used as a signal probe to construct an effective sensitization structure with methylene blue (MB), combined with protein conversion strategy, and a photoelectrochemical (PEC) biosensor was constructed...


Sign in / Sign up

Export Citation Format

Share Document