Article
Environmental Sciences
Yi Sun, Qingxiang Zhou, Xueying Sheng, Shuanying Li, Yayan Tong, Jinghan Guo, Boyao Zhou, Jingyi Zhao, Menghua Liu, Zhi Li, Yanhui Li, Tongxu Qu, Chunmao Chen
Summary: A fluorescent sensor was constructed using carbon quantum dots with high selectivity and sensitivity towards benzo[a]pyrene, showing great potential for practical application. The sensor exhibited excellent linearity and a low limit of detection, while also being simple, rapid, cost-effective, and stable.
Article
Environmental Sciences
Yongli Liu, Xiaoyan Su, Letian Chen, Huanjia Liu, Chunyuan Zhang, Jiali Liu, Jiayi Hao, Yu Shangguan, Guifen Zhu
Summary: A simple fluorescent sensor based on carbon dots was successfully designed for rapid detection of p-Aminoazobenzene (pAAB), showing good sensitivity and wide linearity range.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Applied
Ahmed Mohammed Ali Abdulkhaleq, Yixu Zhao, Kun Qian, Xueshi Wang, Zhongfu Zuo, Xibin Zhou
Summary: Researchers have developed a fluorescent probe based on carbon dots for the sensitive and selective detection and imaging of endogenous and exogenous peroxynitrite (ONOO-) in cells and animal models. The probe shows low cytotoxicity and has been successfully applied for imaging of exogenous and endogenous ONOO- in zebrafish and mice.
Article
Spectroscopy
Surisa Sa-nguanprang, Anukorn Phuruangrat, Opas Bunkoed
Summary: A hybrid fluorescent sensing probe was developed for the quantitative analysis of thiamphenicol, showing high sensitivity and selectivity. The accuracy of the optosensor was evaluated by analyzing spiked milk samples, which agreed well with HPLC analysis results, with recoveries in the range of 93.5 to 100.1% and good precision.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Spectroscopy
Mohamed A. Abdel-Lateef, Marzough Aziz Albalawi, Sameera N. Al-Ghamdi, Wael A. Mahdi, Sultan Alshehri, Mohamed A. El Hamd
Summary: In this study, a novel fluorescence probe was designed to detect the adulteration of curcumin by harmful artificial dye metanil yellow. The probe was synthesized from the conversion of Tannic acid-Eu3+ complex to Eu-carbon dots. The formed Eu-carbon dots exhibited unique fluorescence excitation and emission features, which can be successfully quenched by metanil yellow dye. The proposed method has a low detection limit and good recovery values.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Nanoscience & Nanotechnology
Kandasamy Sasikumar, Ramar Rajamanikandan, Heongkyu Ju
Summary: We developed a fluorescence sensor using carbon dots (CDs) to detect bilirubin in human urine. The CDs showed spherical shape with a mean particle size of 2.6 nm and emitted fluorescence at 511 nm when excited at 435 nm. A good spectral match between bilirubin absorbance and CDs excitation allowed the sensor to selectively detect bilirubin. The sensor displayed a linear response to bilirubin concentration in a wide range of 3.5-45.5 mM with a low limit of detection and high recovery rate in clinical specimens.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Spectroscopy
Furkan Burak Sen, Nilay Begic, Mustafa Bener, Resat Apak
Summary: In this study, a fluorescent polyethylenimine capped carbon quantum dots (PEI-C-dots) probe was synthesized and used to detect TNT residues. The synthesized PEI-C-dots exhibited high fluorescence quantum yield and low detection limit for TNT. The detection of TNT was not interfered by similar structured explosives, common soil ions, and camouflage agents.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Inorganic & Nuclear
Hema Sindhuja George, Hosimin Selvaraj, Andivelu Ilangovan, Karthikeyan Chandrasekaran, Velu Rajesh Kannan, Punniyakotti Parthipan, Bader O. Almutairi, Ranjith Balu
Summary: Heavy metal ions pose a serious threat to the environment and human health, making their detection and removal crucial. This study demonstrates the successful conversion of papaya seeds into water-soluble carbon dots, which show excellent sensitivity and detection capabilities for Fe3+ ions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Juan Yue, Qian Mei, Panyong Wang, Peng Miao, Wen-Fei Dong, Li Li
Summary: The yellow fluorescent carbon dots (CDs) for detecting GSSG through a fluorescence off-on process show linear correlation with GSSG concentration and a detection limit of 0.18mu M. Additionally, the CDs can also be used for fluorescence imaging in living cells and zebrafish.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Spectroscopy
Guiqiao Wang, Shurong Zhang, Jinzhi Cui, Wensu Gao, Xing Rong, Yaxin Lu, Canzhu Gao
Summary: A fluorescent signal-closing probe based on nitrogen-doped carbon quantum dots (NCQDs) was developed for quantitative detection of mercury ions (Hg2+). The NCQDs showed high selectivity and excellent anti-interference ability, and the detection system had a linear relationship between fluorescence quenching efficiency and Hg2+ concentration. The detection limit was 0.9 μM.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Alex Pascual-Esco, Julian Alonso-Chamarro, Mar Puyol
Summary: A warning microanalyzer using Carbon Dots as selective optical reagents for the rapid monitoring of different heavy metals in water is presented. The system combines microfluidics with selective fluorescence quenching by heavy metal ions, providing sensitivity, automation, and reproducibility. It can also be used as a toxicity control system by selectively measuring heavy metal ions.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Jinyan Du, Ying Yang, Taili Shao, Shuangqing Qi, Ping Zhang, Shujuan Zhuo, Changqing Zhu
Summary: A simple OFF-ON fluorescent system based on yellow emission carbon dots (y-CDs) was developed for the sensitive detection of Fe3+ and PPi in living cells. The system showed high selectivity and sensitivity, with the potential for environmental and biological applications. The y-CDs exhibited excitation-independent emission, making it a promising platform for monitoring Fe3+ and PPi variations in organisms.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Polymer Science
Faisal Kholiya, Smita Jauhari, Ramavatar Meena
Summary: This study demonstrates the successful synthesis of blue-emitting fluorescent carbon dots using seaweed-derived polysaccharide as a green precursor. The prepared carbon dots have a good quantum yield in aqueous solution and can selectively detect iron concentrations in water samples.
POLYMER INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Pooja Chauhan, Jasmine Saini, Savita Chaudhary, K. K. Bhasin
Summary: The successful synthesis of carbon dots (CDs) through one-step thermal treatment has resulted in CDs with high quantum yield and outstanding luminescent and physicochemical properties, suitable for biological component recognition. The developed CDs exhibit extraordinary sensitivity and selectivity towards i-aspartic acid, with potential for real sample recognition and a high recovery rate.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Spectroscopy
Mohamed Ahmed Abdel Hamid, Samar H. Elagamy, Aya Gamal, Fotouh R. Mansour
Summary: A simple and eco-friendly microwave method was used to prepare highly fluorescent nitrogen and sulfur co-doped carbon quantum dots (NS-CQDs) for the determination of ascorbic acid (ASC) in pharmaceutical dosage forms. The NS-CQDs were prepared within one minute using citric acid and L-cysteine. The fluorescence of NS-CQDs was quenched by ferric ions but could be restored by the addition of ASC due to its reducing properties.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Jose Pedro Silva, Patricia Gonzalez-Berdullas, Mariana Pereira, Diana Duarte, Jose E. Rodriguez-Borges, Nuno Vale, Joaquim C. G. Esteves da Silva, Luis Pinto da Silva
Summary: Chemiluminescence is a fascinating process that allows light emission without the need for photoexcitation. In this study, a halogenated Coelenterazine analog was synthesized, and its potential anticancer activity and chemiluminescence were characterized. The results showed that this analog exhibited enhanced emission in aqueous solution when triggered by superoxide anions and was compatible with human cell lines. The analysis also provided insights into the cytotoxicity and structural properties of brominated Coelenterazines, which have selective anticancer activity. Furthermore, the combination approach with a known chemotherapeutic agent improved its profile. These findings are valuable for future optimizations of halogenated Coelenterazine analogs.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
El Hadi Erbiai, Abdelfettah Maouni, Luis Pinto da Silva, Rabah Saidi, Mounir Legssyer, Zouhaire Lamrani, Joaquim C. G. Esteves da Silva
Summary: This study investigates the chemical compositions and antioxidant properties of two wild edible mushrooms in northern Morocco. The results show that both mushrooms contain various bioactive compounds with important biological activities, making them potentially valuable for the food and pharmaceutical industries.
Article
Environmental Sciences
Hamza El Azhari, El Khalil Cherif, Otmane Sarti, El Mustapha Azzirgue, Houria Dakak, Hasna Yachou, Joaquim C. G. Esteves da Silva, Farida Salmoun
Summary: The study aimed to improve the assessment of surface water quality and geochemical analysis in the Oued Laou watershed, Northern Morocco, in order to evaluate the impact of anthropogenic activities on surface water quality. By using emerging techniques such as multivariate statistical approaches, water quality indices, irrigation water quality indices, and Geographic Information System, the study found that most parameters had concentrations below World Health Organization (WHO) limits, except for bicarbonate ions (HCO3-) and biochemical oxygen demand for five days (BOD5). It was also found that the Oued Laou river was exposed to contamination from both anthropogenic activities and water-sediment interaction. The combination of water quality indices, principal component analysis, irrigation water quality index, and Geographic Information System proved to be effective in assessing the suitability of surface water for drinking and supporting decision-making.
Article
Materials Science, Biomaterials
Diana Crista, Manuel Algarra, Maria Valle Martinez de Yuso, Joaquim C. G. Esteves da Silva, Luis Pinto da Silva
Summary: This study reports the synthesis of N-doped carbon dots obtained from the dry heating of solid mixtures of glucose and urea. The optical properties and composition of the carbon dots were investigated, and two types of carbon dots were found, one soluble in water and the other only soluble at basic pH.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Oncology
Amina El Mihyaoui, Saoulajan Charfi, El Hadi Erbiai, Mariana Pereira, Diana Duarte, Nuno Vale, Maria Emilia Candela Castillo, Alain Badoc, Ahmed Lamarti, Joaquim C. G. Esteves da Silva, Marino B. Arnao
Summary: Cancer is a major health concern worldwide, and phytochemicals are considered interesting molecules for the development of anticancer drugs. This study investigated the effects of extracts from the plant Cladanthus mixtus on human tumor cells. The extracts showed significant antiproliferative activity against cancer cell lines and a non-tumoral cell line. The aim was to identify bioactive compounds and evaluate the anticancer activity of the extracts.
Article
Biochemistry & Molecular Biology
Amina El Mihyaoui, El Hadi Erbiai, Saoulajan Charfi, Eugenia Pinto, Maria Emilia Candela Castillo, Josefa Hernandez-Ruiz, Antonio Cano, Alain Badoc, Ahmed Lamarti, Joaquim C. G. Esteves da Silva, Marino B. B. Arnao
Summary: The study investigated the chemical composition and bioactivity of methanolic extracts from Cladanthus mixtus in northern Morocco for the first time. Phenolic and flavonoid contents were determined and the composition of the extracts was analyzed by GC-MS. The extracts showed antioxidant and antimicrobial activities, with higher phenolic and flavonoid contents in flower extracts. The extracts were most effective against Staphylococcus aureus and Trichophyton rubrum.
Article
Environmental Sciences
El Mustapha Azzirgue, El Khalil Cherif, Hamza El Azhari, Houria Dakak, Hasna Yachou, Ahmed Ghanimi, Nordine Nouayti, Joaquim Esteves da Silva, Farida Salmoun
Summary: This study investigated the pollution caused by the discharges from TAC's wastewater treatment plant on the Jouamaa Hakama groundwater and Ouljat Echatt river. The interactions between surface water and groundwater were examined through sampling and analysis of water samples. The results showed a significant relationship between river water and shallow groundwater, with different ion concentrations observed in both water sources.
Review
Chemistry, Multidisciplinary
Ines M. F. Cardoso, Luis Pinto da Silva, Joaquim C. G. Esteves da Silva
Summary: This review focuses on the critical analysis of nanocatalysts for advanced reductive processes (ARPs) and oxidation processes (AOPs) designed for the degradation of poly/perfluoroalkyl substances (PFAS) in water. The basic treatment technologies include ozone, ultraviolet, and photocatalyzed ARPs and/or AOPs. In addition to reviewing nanomaterials with great potential as catalysts for advanced PFAS processes in water, the perspectives for their future development considering sustainability are discussed. Moreover, a brief analysis of the current state of the art of ARPs and AOPs for PFAS treatment in water is presented.
Article
Chemistry, Multidisciplinary
El Hadi Erbiai, Patricia Gonzalez-Berdullas, Joaquim C. G. Esteves da Silva, Luis Pinto da Silva
Summary: In this study, the chemiluminescent properties of Coelenterazine and its two halogenated analogs were investigated. It was found that they exhibited a significant enhancement of light emission in aqueous solution, but almost no emission in aprotic solvents. Interestingly, Coelenterazine showed stronger light emission in aprotic solvents, while the chemiluminescence of the analogs was significantly quenched in water compared to methanol and aprotic solvents. These findings suggest that the observed quenching effect in water is attributed to Coelenterazine, rather than intrinsic enhanced emission of the analogs. Overall, we present Coelenterazine analogs that could be used for enhanced sensing of superoxide anion, providing valuable insights into this chemiluminescent system.
APPLIED SCIENCES-BASEL
(2023)
Article
Biology
El Hadi Erbiai, Benoutman Amina, Abbassi Kaoutar, Rabah Saidi, Zouhaire Lamrani, Eugenia Pinto, Joaquim C. G. Esteves da Silva, Abdelfettah Maouni, Luis Pinto da Silva
Summary: This study investigated the chemical characterization and antimicrobial properties of Ganoderma lucidum. The results showed that the methanolic extract of G. lucidum contained abundant phenolic and flavonoid compounds, exhibiting strong antioxidant and antimicrobial activities. These findings highlight the nutritional and medicinal significance of G. lucidum.
Article
Biochemistry & Molecular Biology
Carla M. Magalhaes, Tanja Ducic, Renato B. Pereira, Patricia Gonzalez-Berdullas, Jose E. Rodriguez-Borges, David M. Pereira, Joaquim C. G. Esteves da da Silva, Manuel Algarra, Luis Pinto da Silva
Summary: The mode of action of brominated Coelenteramine towards gastric cancer cells was investigated using synchrotron radiation-based FTIR spectroscopy. This method revealed that the anticancer activity of the compound is closely related to cellular lipids, impacting their organization and composition. Increased oxidative stress led to changes in membrane polarity, lipid chain packing, and lipid composition, which were not observed in noncancer cells, explaining its selectivity profile. Therefore, synchrotron radiation-based FTIR proved to be a powerful technique for studying the mechanism of anticancer drugs.
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Gabriela Rodriguez-Carballo, Ramon Moreno-Tost, Sonia Fernandes, Joaquim C. G. Esteves da Silva, Luis Pinto da Silva, Eulogio Castro Galiano, Manuel Algarra
Summary: The effectiveness of different transition metal phosphate-based acid catalysts in the hydrothermal synthesis of carbon dots was evaluated. The existence of nanoparticles was confirmed regardless of the carbohydrate source. N-doped CDs with increased fluorescence were also synthesized and their photocatalytic activity was investigated. A Life Cycle Assessment revealed that the nature of the carbon precursor plays a decisive role in the environmental impact of the synthesis process.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Infectious Diseases
Hajar Ettakifi, Kaoutar Abbassi, Safae Maouni, El Hadi Erbiai, Abderrahmane Rahmouni, Mounir Legssyer, Rabah Saidi, Zouhaire Lamrani, Joaquim C. G. Esteves da Silva, Eugenia Pinto, Abdelfettah Maouni
Summary: This study aimed to investigate the chemical composition of the essential oil and crude extracts of Tanacetum annuum and evaluate their antioxidant and antifungal activities. The results showed that Tanacetum annuum contained important phenolic compounds and demonstrated strong antioxidant and antifungal abilities.
Article
Green & Sustainable Science & Technology
Ricardo M. S. Sendao, Manuel Algarra, Eduarda Ribeiro, Mariana Pereira, Antonio Gil, Nuno Vale, Joaquim C. G. Esteves da Silva, Luis Pinto da Silva
Summary: In this study, the conjugation of carbon dots (CDs) with TiO2 nanoparticles was reported to prepare a photocatalytic nanocomposite for enhanced visible-light-driven photodegradation. The addition of CDs led to an increase in visible-light absorption and hindered the recombination of photogenerated charge carriers, resulting in a significant improvement in the catalytic performance of TiO2. The nanocomposites exhibited a different active species profile compared to bare TiO2, with superoxide radicals and hydroxyl radicals being the main active species. Additionally, a life cycle assessment showed that the nanocomposites had lower relative environmental impacts and the safety of the produced CDs was confirmed by in vitro assays. This study provides an important step towards the sustainable rational design of active visible-light-driven photocatalysts.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Abhishek Kumar, Diana M. A. Crista, Ara Nunez-Montenegro, Joaquim C. G. Esteves da Silva, Santosh Kumar Verma
Summary: In this study, Eu2+/Dy3+ ions doped/co-doped into SrAl2O4 microparticles were synthesized through solid-state synthesis and ball milling. These particles exhibited a broad and long-persistent afterglow at the wavelength of 528 nm under broad excitation at around 400 nm. The luminescence intensity was optimized by selecting different annealing temperatures. Various characterization techniques were used to evaluate the preparation and application potential of these particles in latent fingermark detection. The persistence and stability of the particles were measured using a digital lux meter.
Article
Chemistry, Analytical
Yujia Ying, Huilin Li
Summary: Enzymes play a crucial role as biological catalysts in accelerating biochemical reactions in living organisms. This study proposes a convenient method for monitoring enzymatic catalytic processes using native top-down mass spectrometry. By exploring the heterogeneity of the chymotrypsin sample and using tandem mass spectrometry, the researchers were able to monitor covalent and noncovalent enzymatic complexes, substrates, and products during catalysis. The results demonstrate that this method has the potential to be a promising tool for characterizing biocatalysts.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Kang Yang, Shuaibo Shi, Jinyu Wu, Shaolong Han, Shengdi Tai, Shishen Zhang, Kun Zhang
Summary: H2O and D2O are important analogues closely related to various industries and monitoring fields. This study successfully distinguishes and detects H2O and D2O by designing a novel eu(III)-macrocycle with dual emitters, Eu-2a, and conducting fluorescence titration experiments.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Julia Kuligowski, Alvaro Perez-Rubio, Marta Moreno-Torres, Polina Soluyanova, Judith Perez-Rojas, Ivan Rienda, David Perez-Guaita, Eugenia Pareja, Ramon Trullenque-Juan, Jose Castell, Marcha Verheijen, Florian Caiment, Ramiro Jover, Guillermo Quintas
Summary: This study introduces a novel variable selection approach called cluster PLS (c-PLS) to assess the joint impact of variable groups selected based on biological characteristics on the predictive performance of a multivariate model. The usefulness of c-PLS is shown using miRNomic and metabolomic datasets obtained from the analysis of liver tissue biopsies.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Meixue Lai, Lijie Zhong, Siyi Liu, Yitian Tang, Tingting Han, Huali Deng, Yu Bao, Yingming Ma, Wei Wang, Li Niu, Shiyu Gan
Summary: This study presents a method for constructing wearable sweat electrolyte sensors using carbon fiber-based solid-contact ion-selective electrodes (SC-ISEs). By using carbon fibers extracted from commercial cloth as electrode material, the cost and reproducibility issues of flexible SC-ISEs were addressed. The results showed that the carbon fiber-based SC-ISEs exhibited reversible voltammetric and stable impedance performances, and had high reproducibility of standard potentials between normal and bending states.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Yang, Ying Liu, Min Deng, Peipei Wang, Dan Cheng, Songjiao Li, Longwei He
Summary: A near-infrared fluorescent probe has been developed to accurately measure the levels of peroxynitrite (ONOO-) in the endoplasmic reticulum (ER) in acute lung injury (ALI). The probe demonstrated rapid response, high selectivity, good sensitivity, and enhanced fluorescence intensity in response to ONOO-. It was successfully used to detect changes in ONOO- levels and showed significant increases in an ALI cell model and an ALI mouse model.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yanping Wang, Yuemei Chen, Kejun Li, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang
Summary: In this work, a portable analytical system based on point discharge chemical vapor generation atomic emission spectrometry (PD-CVG-AES) coupling with gold filament enrichment was designed. The highly sensitive analysis of Hg2+ indirectly realized the detection of ascorbic acid (AA). The measurement is based on the fact that Ag+ can decrease the concentration of Hg2+ by forming Ag-Hg amalgam in the presence of the reductant SnCl2, while AA can pre-reduce Ag+ to Ag0, leading to the generation of silver nanoparticles (Ag NPs). The developed novel analytical strategy broadens the application of microplasma-based AES and offers a higher level of sensitivity compared to current AA detection techniques.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yundi Huang, Bo Song, Kaiwen Chen, Deshu Kong, Jingli Yuan
Summary: This study developed two lysosome-targetable background-free TGL probes for efficient and accurate detection of 1O2, which can be used for monitoring endogenous 1O2 concentrations in lysosomes and discriminating variability induced by different photosensitizers. Furthermore, a smart luminescent sensor film was successfully prepared for on-site 1O2 production detection during PDT processes, offering a promising clinical monitoring tool for skin diseases.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Wei Lang, Jia-Mei Qin, Qian-Yong Cao
Summary: A novel polymer-based probe P1 was successfully synthesized for fluorescently ratiometric sensing of H2S with high selectivity and sensitivity. A smartphone sensing platform was constructed to conduct visual quantitative detection of H2S. P1 can be employed in evaluating the level fluctuations of H2S in living cells, testing water samples/wine samples, and monitoring food freshness.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yuanyuan Qin, Shuda Liu, Shuyun Meng, Dong Liu, Tianyan You
Summary: The study developed a split aptamer-based sandwich-type ratiometric biosensor for the detection of 17 beta-estradiol (E2) using photoelectrochemical and electrochemical assays. The biosensor utilized split aptamer fragments to recognize E2 and trigger a hybridization chain reaction, resulting in the production of double-stranded DNA labeled with CdTe quantum dots. This DNA complex was able to sensitize CdTe quantum dots and generate response signals for E2 detection. The developed biosensor demonstrated high sensitivity and accuracy with two linear ranges and low detection limits.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Siriwan Teepoo, Jongjit Jantra, Khaunnapa Panapong, David Taiwo Ajayi
Summary: A novel immunochromatographic assay based on hyperbranched Au plasmonic blackbodies with a smartphone readout was developed for rapid and sensitive detection of leucomalachite green residues in fish and shrimp products.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Andrea L. Larraga-Urdaz, Borja Moreira-Alvarez, Jorge Ruiz Encinar, Jose M. Costa-Fernandez, Maria Luisa Fernandez-Sanchez
Summary: A major challenge in the 21st century is the development of point-of-care diagnostic tools. In this study, a highly sensitive and simple bioassay using AuNPs and MNAzymes was developed for rapid detection and quantification of miRNA-4739. The proposed strategy shows potential for breast cancer diagnosis.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Xiaohan Zhao, Anyu Wang, Lingzi Zhai, Jiuhe Gao, Sizhe Lyu, Yingshan Jiang, Tian Zhong, Ying Xiao, Xi Yu
Summary: A novel method using polystyrene-coated magnetic nanoparticles for extracting monohydroxy polycyclic aromatic hydrocarbons from urine samples was investigated. The proposed method is simple, sensitive, and efficient, with desirable sensitivity for analyzing low-abundance metabolites in large volumes of complex urine samples.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Quan, Yuqing Zeng, Wenke Zhang, Fengfeng Li, Mengjiao Li, Zhihe Qing, Linlin Wu
Summary: In this study, a visual and reusable biosensor was developed for detecting substrates that are closely associated with human physiological health. The immobilized oxidase showed higher stability and sensitivity under harsh conditions, enabling reliable detection of substrates in complex fluids.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Dongjuan Wang, Xiuqian Ding, Jinling Xie, Juan Wang, Guanhao Li, Xin Zhou
Summary: In this study, a three-in-one sensor was developed for real-time detection of biogenic amines (BAs) with high sensitivity and selectivity. The sensor showed multimodal responses and could be used to fabricate portable devices for on-site non-destructive assessment of food spoilage indicators.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Jinting Meng, Zihao Xu, Shasha Zheng, Hongqun Yang, Tianfu Wang, Hong Wang, Yingwei Zhang
Summary: This study demonstrates the development of a cascade signal amplification system using a multi-pedal DNA walker and strand displacement reactions for the electrochemical detection of miRNA-155. The biosensor exhibited high sensitivity, selectivity, and the potential for clinical applications.
ANALYTICA CHIMICA ACTA
(2024)
