Article
Chemistry, Analytical
Tasnima Alam Asa, Pradeep Kumar, Young Jun Seo
Summary: In this study, a Pradeep Kumar (PK)-probe was combined with a ligation-transcription-ramified RCA (LTR) dual-amplification system for the isothermal colorimetric detection of miRNA 25-3P. The detection system showed extraordinary sensitivity and high specificity, enabling simple naked-eye qualitative detection of miRNA.
Article
Chemistry, Analytical
Jialin Sai, Lu Zhou, Lin Jiang, Dongguo Xue, Renjun Pei, Aihua Liu, Lijun Xu
Summary: A novel dual signal amplification strategy was developed for the detection of HIV-1 DNA sequence. This approach combines urease catalysis with the release of Ag+ from silver nanoparticles, allowing for sensitive and economical quantification. The proposed method exhibits a low detection limit and a wide dynamic linear range.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Applied
Xiaojuan Niu, Huanhuan He, Hang Ran, Zhen Wu, Yue Tang, Yuangen Wu
Summary: Ag3PO4 nanoparticles were synthesized and exhibited excellent laccase-mimicking catalytic activity. Fumonisin B1 was found to inhibit the laccase-mimicking activity of Ag3PO4 nanoparticles. A novel colorimetric sensor for FB1 analysis in cereals was developed using the laccase-mimicking activity as a sensing signal, which allowed quantitative analysis of FB1 using a smartphone. The sensor showed a low limit of detection (LOD) of 1.73 μg/L, below the maximum residue limits (MRLs) set by regulatory authorities.
Article
Spectroscopy
Wannida Sapyen, Saowanee Toonchue, Narong Praphairaksit, Apichat Imyim
Summary: A colorimetric detection method using starch-stabilized silver nanoparticles (starch-AgNPs) was developed for the selective quantitation of Cr(VI). The method relies on the observation of color change and reduction in UV-Vis signal to detect Cr(VI). The method offers high sensitivity and simplicity, making it suitable for speciation analysis of chromium in real water samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Yaopeng Li, Yijing Li, Junling Duan, Juying Hou, Qin Hou, Yuechao Yang, Houshen Li, Shiyun Ai
Summary: A rapid, sensitive, and reliable colorimetric and SERS sensor method for detecting Hg2+ ions was developed using silver nanocrystals modified by Tris-base. The method achieved ultrasensitive detection in a wide concentration range, showing great potential for practical applications in environmental protection and food safety.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Raouia Attaallah, Aziz Amine
Summary: The article introduces a developed enzymic membrane for rapid detection of Cd2+ in water samples by inhibiting HRP. The advantages of using the enzymic membrane include no pretreatment required, and a developed electrochemical biosensor with a wide linear calibration range.
Article
Chemistry, Physical
Rungroj Chanajaree, Chalita Ratanatawanate, Songtham Ruangchaithaweesuk, Vannajan Sanghiran Lee, Kitiyaporn Wittayanarakul
Summary: The silver nanoparticles complexed with curcumin extracted from turmeric are effective for detecting lead ions, with high selectivity and rapid detection. Results can be observed naked-eye within 20 minutes and are in good agreement with experimental results.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Applied
Junjun Wang, Yue Tang, Jia Zheng, Zhengmin Xie, Jianli Zhou, Yuangen Wu
Summary: A colorimetric biosensor based on the enhancement of DNAzyme with peroxidase-mimic activity is established for histamine detection in meat. The biosensor demonstrates excellent sensitivity, selectivity, and recovery rate in actual meats.
Article
Chemistry, Analytical
Ravi Mani Tripathi, Sang J. Chung
Summary: A highly sensitive and selective colorimetric assay using biogenic palladium nanoparticles (Pd NPs) was developed for the detection of uric acid. The instrument-free detection had a limit of detection of 0.05 μM and a limit of quantification of 1.11 μM. The assay showed a linear response in the concentration range of 0.05 to 1 μM with a linear regression correlation coefficient of 0.99841. This colorimetric detection provides a rapid, cost-effective, and easy-to-use platform for the clinical diagnosis of uric acid biomarkers.
Article
Chemistry, Applied
Abhishek Mishra, Ekta Arjundas Kukreja, Ramesh Namdeo Pudake, Robin Kumar, Manoj Pratap Singh, Lalit Yadav, Ishan Pandey, Faheem A. Sheikh, Ravi Mani Tripathi
Summary: The overuse of antibiotics like ampicillin in developing and industrializing countries leads to the evolution of drug-resistant bacteria and adverse effects on health. To address this issue, a colorimetric assay using poly(vinyl alcohol)-capped silver nanoparticles was developed to detect ampicillin. The assay exhibited good selectivity and sensitivity, with a detection limit of 6.2 μM. This method provides a real-time and easy-to-use platform for detecting ampicillin in actual samples.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Analytical
A. Vinotha Alex, Tushar Deosarkar, N. Chandrasekaran, Amitava Mukherjee
Summary: In this study, a rapid and precise sensing strategy based on AChE inhibition was proposed for the detection of malathion using Ag-GO and ATCh. The nanocomposite of Ag-GO was successfully developed for the rapid and accurate detection of malathion, with good recovery rates in different samples.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Yanying Wang, Hui Zhang, Hao Hu, Xiaoming Jiang, Xinfeng Zhang, Peng Wu
Summary: Development of an important and easy analytical method for screening silver ore samples is crucial for resource exploration and mining. A selective Ag+-promoted photosensitization colorimetric assay was developed, which allowed highly sensitive colorimetric detection of Ag+ with a visual limit of quantification as low as 0.2 ng/mL. The accuracy of the method was verified through analyzing certified reference material and real ore samples, showing good agreement with the results obtained by electrothermal atomic absorption spectrometry (ET-AAS).
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Sushama Sahu, Kallol K. Ghosh
Summary: The interaction of biomolecules with metallic nanoparticles generates a biomolecular corona on the NP surface, with the amino acid corona being a relatively new research subject that shows potential for selective detection applications. Through spectroscopic and imaging techniques, the interaction mechanism and thermodynamic properties of the complex formed between glutathione-stabilized silver nanoparticles and tartaric acid have been explored.
ANALYTICAL METHODS
(2022)
Article
Green & Sustainable Science & Technology
Lijuan Feng, Hui Wang, Tingting Liu, Tiantian Feng, Meng Cao, Jiacheng Zhang, Tao Liu, Zhanhu Guo, Costas Galiotis, Yihui Yuan, Ning Wang
Summary: Strontium-90, a frequently released radioactive product in nuclear reactor waste, poses serious health hazards due to its long half-life and the ability to accumulate in the food chain and bones. However, its identification is challenging due to the absence of characteristic energy rays. In this study, the authors developed a biosensor that uses a fluorogenic dye, thioflavin T, to detect Sr2+ ions with high sensitivity and selectivity. This work provides a technological solution to monitor radioactive strontium pollution and contributes to the sustainability of nuclear power.
NATURE SUSTAINABILITY
(2023)
Article
Spectroscopy
Munazza Arain, Ayman Nafady, Muhammad Anwar Ul Haq, Hafiz Muhammad Asif, Hafiz Badaruddin Ahmad, Muhammad Ali Khan, Saghir Hussain
Summary: Pesticides and fungicides are important for protecting crops, but they pose potential health risks. This study synthesized silver nanoparticles that can be used to detect the concentration of a specific fungicide. The nanoparticles were characterized using various techniques and their high sensitivity and selectivity were confirmed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
