Tea is the most widely consumed beverage in the world, so its safety is of particular importance. Bisphenol A (BPA) is a pollutant that has been identified in the environment. This systematic study was conducted with the focus on the amount of BPA in tea. Searching in databases was done with related keywords without limitation in time. In most studies, bisphenol A has been detected in tea samples. The range of bisphenol A in tea samples is between ND (not detected) and 219 ng/g. In about 28 % of the studies, the level of bisphenol ND has been reported. Conventional and new techniques for measuring bisphenol in tea are also discussed in this manuscript. The common methods are the use of SPE (Solid-Phase Extraction) and QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method. However, novel methods, including the use of covalent organic frameworks and Nano particles, are outstanding researches.
茶是世界上消费量最大的饮料，因此其安全性尤为重要。双酚 A（BPA）是一种已在环境中发现的污染物。本系统研究的重点是茶叶中的双酚 A 含量。在没有时间限制的情况下，使用相关关键词在数据库中进行了搜索。在大多数研究中，茶叶样本中都检测到了双酚 A。茶叶样本中双酚 A 的含量范围在 ND（未检出）和 219 纳克/克之间。约有 28% 的研究报告了双酚 ND 水平。本手稿还讨论了测量茶叶中双酚的传统技术和新技术。常用的方法有固相萃取法（SPE）和QuEChERS（快速、简便、廉价、有效、坚固和安全）法。然而，包括使用共价有机框架和纳米颗粒在内的新型方法也是一项杰出的研究。
{"title":"Common and novel methods for the identification of bisphenol A in tea samples: A systematic review study","authors":"Nader Akbari , Burhan Basaran , Mahmoud Ghazi-Khansari , Behrouz Akbari-Adergani , Alireza Bakhtiyari , Parisa Shavali-gilani , Parisa Sadighara","doi":"10.1016/j.microc.2024.111724","DOIUrl":"10.1016/j.microc.2024.111724","url":null,"abstract":"<div><div>Tea is the most widely consumed beverage in the world, so its safety is of particular importance. Bisphenol A (BPA) is a pollutant that has been identified in the environment. This systematic study was conducted with the focus on the amount of BPA in tea. Searching in databases was done with related keywords without limitation in time. In most studies, bisphenol A has been detected in tea samples. The range of bisphenol A in tea samples is between ND (not detected) and 219 ng/g. In about 28 % of the studies, the level of bisphenol ND has been reported. Conventional and new techniques for measuring bisphenol in tea are also discussed in this manuscript. The common methods are the use of SPE (Solid-Phase Extraction) and QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method. However, novel methods, including the use of covalent organic frameworks and Nano particles, are outstanding researches.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111724"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1016/j.microc.2024.111708
Lazo J. Mohammed , Khalid M. Omer
Aflatoxins are extremely harmful and cancer-causing substances generated by specific fungi that can contaminate various agricultural products, posing serious health risks to humans, food safety, and animals. Due to their high liposolubility, aflatoxins are readily absorbed into the bloodstream through the gastrointestinal and respiratory tracts. Given their resilience and widespread occurrence, aflatoxins continue to be a global concern, necessitating continuous monitoring and the development of innovative detection methods to protect public health and ensure food security. The emergence of carbon dots (CDs) presents a promising avenue for rapidly detecting aflatoxins. CDs offer numerous advantages, including negligible cytotoxicity, water solubility, biocompatibility, chemical stability, efficient light absorption, and exceptional photoinduced electron transfer. Despite these benefits the literature contains some novel reports on using CDs for aflatoxin detection, but lacks a review article. Therefore, this review article explores novel, and emerging detection methods for aflatoxins, such as colorimetric, fluorometric, electrochemical, and electrogenerated chemiluminescence techniques, focusing on the use of modified and unmodified CDs. It also demonstrates how multi-recognition elements are combined with CDs to improve selectivity, sensitivity, and stability for aflatoxin detection. Finally, challenges and limitations for future CDs implementation in real-world assays are discussed.
{"title":"Recent advances in detection of aflatoxins using carbon dots: A review","authors":"Lazo J. Mohammed , Khalid M. Omer","doi":"10.1016/j.microc.2024.111708","DOIUrl":"10.1016/j.microc.2024.111708","url":null,"abstract":"<div><div>Aflatoxins are extremely harmful and cancer-causing substances generated by specific fungi that can contaminate various agricultural products, posing serious health risks to humans, food safety, and animals. Due to their high liposolubility, aflatoxins are readily absorbed into the bloodstream through the gastrointestinal and respiratory tracts. Given their resilience and widespread occurrence, aflatoxins continue to be a global concern, necessitating continuous monitoring and the development of innovative detection methods to protect public health and ensure food security. The emergence of carbon dots (CDs) presents a promising avenue for rapidly detecting aflatoxins. CDs offer numerous advantages, including negligible cytotoxicity, water solubility, biocompatibility, chemical stability, efficient light absorption, and exceptional photoinduced electron transfer. Despite these benefits the literature contains some novel reports on using CDs for aflatoxin detection, but lacks a review article. Therefore, this review article explores novel, and emerging detection methods for aflatoxins, such as colorimetric, fluorometric, electrochemical, and electrogenerated chemiluminescence techniques, focusing on the use of modified and unmodified CDs. It also demonstrates how multi-recognition elements are combined with CDs to improve selectivity, sensitivity, and stability for aflatoxin detection. Finally, challenges and limitations for future CDs implementation in real-world assays are discussed.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111708"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1016/j.microc.2024.111667
Reham E. Kannouma , Amira H. Kamal , Mohamed A. Hammad , Fotouh R. Mansour
Carbon dots (CDs) have become widely recognized for their distinct attributes and possible uses in a variety of areas, leading to increased interest over the last few years. CDs are usually smaller than 10 nm in diameter and are composed of carbon atoms organized in either a crystalline or amorphous form. The synthesis of CDs can be achieved through various methods, including bottom-up and top-down approaches. The bottom-up approach includes hydrothermal, microwave, and pyrolysis synthesis, while the top-down approach includes electrochemical and laser ablation methods. These methods result in CDs with different sizes, surface functional groups, and optical properties. Techniques such as transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) are frequently employed to examine the morphology, structure, and chemical composition of CDs. Additionally, the primary problems and obstacles related to CDs are reviewed, along with efforts to advance the related research fields. CDs have demonstrated potential uses in areas including bioimaging, drug delivery, photocatalysis, and sensors. Their exceptional optical characteristics, compatibility with living organisms, and minimal harmful effects on health make them perfect candidates for utilization in biological and environmental applications. In summary, CDs have a broad scope of potential uses and are considered a versatile category of nanoparticles. More investigation is required to examine their characteristics and improve their production processes for particular applications.
{"title":"Tips and Tricks for Applying luminescent carbon dots in chemical Analysis: Recent Advancements, Obstacles, and future Outlook","authors":"Reham E. Kannouma , Amira H. Kamal , Mohamed A. Hammad , Fotouh R. Mansour","doi":"10.1016/j.microc.2024.111667","DOIUrl":"10.1016/j.microc.2024.111667","url":null,"abstract":"<div><div>Carbon dots (CDs) have become widely recognized for their distinct attributes and possible uses in a variety of areas, leading to increased interest over the last few years. CDs are usually smaller than 10 nm in diameter and are composed of carbon atoms organized in either a crystalline or amorphous form. The synthesis of CDs can be achieved through various methods, including bottom-up and top-down approaches. The bottom-up approach includes hydrothermal, microwave, and pyrolysis synthesis, while the top-down approach includes electrochemical and laser ablation methods. These methods result in CDs with different sizes, surface functional groups, and optical properties. Techniques such as transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) are frequently employed to examine the morphology, structure, and chemical composition of CDs. Additionally, the primary problems and obstacles related to CDs are reviewed, along with efforts to advance the related research fields. CDs have demonstrated potential uses in areas including bioimaging, drug delivery, photocatalysis, and sensors. Their exceptional optical characteristics, compatibility with living organisms, and minimal harmful effects on health make them perfect candidates for utilization in biological and environmental applications. In summary, CDs have a broad scope of potential uses and are considered a versatile category of nanoparticles. More investigation is required to examine their characteristics and improve their production processes for particular applications.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111667"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1016/j.microc.2024.111706
Sijie Shuai , Wending Nie , Ke Hu , Xiaolei Cui , Jing Wang , Dongdong Li , Tengfei Li
A headspace solid-phase microextraction (HS-SPME) method using Citrus reticulata peel carbon aerogel (CRPCA) combined with gas chromatography (GC) was developed for the detection of organochlorine pesticides (OCPs) in fruit and vegetable samples. CRPCA was synthesized by hydrothermal reaction and carbonization of Citrus reticulata peel. Characterization of CRPCA revealed that it possesses an open porous structure, high thermal stability, and abundant functional groups. Experimental parameters for the adsorption and desorption of OCPs using CRPCA-coated fiber were optimized. Under optimal conditions, the developed method showed good linearity in the range of 0.1 to 10ng/g (r2 ≥ 0.991), low detection limits (0.002–0.052ng/g), and high reusability (100 cycles). The HS-SPME-GC method using CRPCA-coated fiber was applied to real samples (Chinese cabbage, white radish, apple, peach, and pear). The established method enables the simple, environmentally friendly, and sensitive detection of trace OCPs in complex matrices.
{"title":"Headspace solid-phase microextraction using a Citrus reticulata peel carbon aerogel for gas chromatography quantification of organochlorine pesticides in fruit and vegetable samples","authors":"Sijie Shuai , Wending Nie , Ke Hu , Xiaolei Cui , Jing Wang , Dongdong Li , Tengfei Li","doi":"10.1016/j.microc.2024.111706","DOIUrl":"10.1016/j.microc.2024.111706","url":null,"abstract":"<div><div>A headspace solid-phase microextraction (HS-SPME) method using <em>Citrus reticulata</em> peel carbon aerogel (CRPCA) combined with gas chromatography (GC) was developed for the detection of organochlorine pesticides (OCPs) in fruit and vegetable samples. CRPCA was synthesized by hydrothermal reaction and carbonization of <em>Citrus reticulata</em> peel. Characterization of CRPCA revealed that it possesses an open porous structure, high thermal stability, and abundant functional groups. Experimental parameters for the adsorption and desorption of OCPs using CRPCA-coated fiber were optimized. Under optimal conditions, the developed method showed good linearity in the range of 0.1 to 10ng/g (r<sup>2</sup> ≥ 0.991), low detection limits (0.002–0.052ng/g), and high reusability (100 cycles). The HS-SPME-GC method using CRPCA-coated fiber was applied to real samples (Chinese cabbage, white radish, apple, peach, and pear). The established method enables the simple, environmentally friendly, and sensitive detection of trace OCPs in complex matrices.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111706"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1016/j.microc.2024.111692
Danyi Huang , Haowei Ma , Jinli Wang , Yuxuan Du , Runhan Li
The issue of food safety, which is intricately related to the economic progress of the food industry and public health, has emerged as a significant global concern that is receiving increasing attention worldwide. The implementation of efficient detection technologies plays a vital role in ensuring the safety of food products. In recent years, there has been significant advancement in the progress of POCT (point-of-care testing) biosensors, driven by the increasing demand for rapid and home testing. Paper-based biosensors have emerged as a prominent category within the realm of POCT biosensors, primarily because of their cost-effectiveness, simplicity, and portability. In order to address the growing need for POCT in a variety of applications, there is a highly demanded for the functionalization of paper substrates. Metal-organic framework (MOF), a versatile porous nanomaterial, is presented in the fabrication of paper-derived platforms, meaningfully boosting the detecting feature and application potential. This study offers an overview of the latest developments and emerging trends in MOF-functionalized paper-based biosensors (MOF@paper), encompassing various kinds of substrates, construction techniques, diagnosis applications and mechanisms. Due to the superior performance and multifunctionality of MOF@paper biosensors, this area shows promising prospects in scientific research, food safety, and control applications.
{"title":"Mof-mediated paper-based (bio)sensors for detecting of food and environmental pollutants: Preparation strategies and emerging applications","authors":"Danyi Huang , Haowei Ma , Jinli Wang , Yuxuan Du , Runhan Li","doi":"10.1016/j.microc.2024.111692","DOIUrl":"10.1016/j.microc.2024.111692","url":null,"abstract":"<div><div>The issue of food safety, which is intricately related to the economic progress of the food industry and public health, has emerged as a significant global concern that is receiving increasing attention worldwide. The implementation of efficient detection technologies plays a vital role in ensuring the safety of food products. In recent years, there has been significant advancement in the progress of POCT (point-of-care testing) biosensors, driven by the increasing demand for rapid and home testing. Paper-based biosensors have emerged as a prominent category within the realm of POCT biosensors, primarily because of their cost-effectiveness, simplicity, and portability. In order to address the growing need for POCT in a variety of applications, there is a highly demanded for the functionalization of paper substrates. Metal-organic framework (MOF), a versatile porous nanomaterial, is presented in the fabrication of paper-derived platforms, meaningfully boosting the detecting feature and application potential. This study offers an overview of the latest developments and emerging trends in MOF-functionalized paper-based biosensors (MOF@paper), encompassing various kinds of substrates, construction techniques, diagnosis applications and mechanisms. Due to the superior performance and multifunctionality of MOF@paper biosensors, this area shows promising prospects in scientific research, food safety, and control applications.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111692"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1016/j.microc.2024.111705
Ying Shen, Shichao Zhao, Yanfei Lv, Fei Chen, Li Fu
This review comprehensively examines the role of electrochemical sensors in the determination of acid red dyes, addressing the growing concerns over their potential health and environmental impacts. The paper explores the chemical properties, classification, and regulatory aspects of acid red dyes, highlighting the need for sensitive and selective detection methods. Electrochemical sensing techniques, including voltammetry, amperometry, and potentiometry, are discussed in detail, with a focus on various electrode materials and modification strategies. Recent advancements in nanomaterials, conductive polymers, and molecularly imprinted polymers have significantly enhanced sensor performance, enabling detection limits in the nanomolar range and wide linear dynamic ranges. The review critically evaluates the challenges faced in real-world applications, such as matrix effects and multiplexed detection, and provides insights into future research directions. Emphasis is placed on the potential for commercial applications, particularly in food safety, environmental monitoring, and industrial quality control. The paper concludes by highlighting the need for continued innovation in electrode design, signal processing, and sensor integration to meet the evolving demands of acid red dye analysis.
{"title":"Acid red dyes and the role of electrochemical sensors in their determination","authors":"Ying Shen, Shichao Zhao, Yanfei Lv, Fei Chen, Li Fu","doi":"10.1016/j.microc.2024.111705","DOIUrl":"10.1016/j.microc.2024.111705","url":null,"abstract":"<div><div>This review comprehensively examines the role of electrochemical sensors in the determination of acid red dyes, addressing the growing concerns over their potential health and environmental impacts. The paper explores the chemical properties, classification, and regulatory aspects of acid red dyes, highlighting the need for sensitive and selective detection methods. Electrochemical sensing techniques, including voltammetry, amperometry, and potentiometry, are discussed in detail, with a focus on various electrode materials and modification strategies. Recent advancements in nanomaterials, conductive polymers, and molecularly imprinted polymers have significantly enhanced sensor performance, enabling detection limits in the nanomolar range and wide linear dynamic ranges. The review critically evaluates the challenges faced in real-world applications, such as matrix effects and multiplexed detection, and provides insights into future research directions. Emphasis is placed on the potential for commercial applications, particularly in food safety, environmental monitoring, and industrial quality control. The paper concludes by highlighting the need for continued innovation in electrode design, signal processing, and sensor integration to meet the evolving demands of acid red dye analysis.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111705"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1016/j.microc.2024.111725
Qian-Wei Yin , Ji Wang , Jin-Zhou Liu , Jing-Tao Huang , Cheng-Kang Yang , Rong-Sheng Li , Jian Ling , Qiue Cao
Fluorescence resonance energy transfer (FRET) from fluorescent nanoparticles to small molecules is an attractive approach for bioanalysis. It remains challenging to reversibly regulate the FRET, let alone use reversible FRET to detect ions or molecules. Here we demonstrate an aggregation/disaggregation strategy for reversible regulation of FRET based on metal–ligand coordination chemistry and redox reactions. An amino-functionalized red fluorescent (∼668 nm) perovskite nanocrystals (PNCs) was prepared as the energy donor. Fe3+ can coordinate with the amino groups on PNCs, resulting in the aggregation of PNCs and enhanced absorption from 600 to 700 nm on the surface of PNCs. Aggregation can reduce the distance between PNCs and Fe3+–amino complexes, as well as restrict rotational and translational diffusion of PNCs or Fe3+–amino complexes, consequently enhancing the FRET between PNCs and Fe3+–amino complexes. Interestingly, reductive ascorbic acid can reduce Fe3+ to Fe2+ in the complexes, leading to a weakening of absorption at 668 nm and dispersion of PNCs, resulting in the disappearance of the FRET process involved in PNCs. Based on the FRET switch, we have realized consecutive quantitative analysis of Fe3+ and ascorbic acid in real samples. We expect that reversible FRET process can be regulated by aggregation-disaggregation instructed by coordination and redox reactions, and that the regulation strategy could significantly expand the application scope of PNCs in fluorescence detection.
{"title":"Aggregation-disaggregation regulated fluorescence resonance energy transfer of perovskite nanocrystals for the detection of ascorbic acid","authors":"Qian-Wei Yin , Ji Wang , Jin-Zhou Liu , Jing-Tao Huang , Cheng-Kang Yang , Rong-Sheng Li , Jian Ling , Qiue Cao","doi":"10.1016/j.microc.2024.111725","DOIUrl":"10.1016/j.microc.2024.111725","url":null,"abstract":"<div><div>Fluorescence resonance energy transfer (FRET) from fluorescent nanoparticles to small molecules is an attractive approach for bioanalysis. It remains challenging to reversibly regulate the FRET, let alone use reversible FRET to detect ions or molecules. Here we demonstrate an aggregation/disaggregation strategy for reversible regulation of FRET based on metal–ligand coordination chemistry and redox reactions. An amino-functionalized red fluorescent (∼668 nm) perovskite nanocrystals (PNCs) was prepared as the energy donor. Fe<sup>3+</sup> can coordinate with the amino groups on PNCs, resulting in the aggregation of PNCs and enhanced absorption from 600 to 700 nm on the surface of PNCs. Aggregation can reduce the distance between PNCs and Fe<sup>3+</sup>–amino complexes, as well as restrict rotational and translational diffusion of PNCs or Fe<sup>3+</sup>–amino complexes, consequently enhancing the FRET between PNCs and Fe<sup>3+</sup>–amino complexes. Interestingly, reductive ascorbic acid can reduce Fe<sup>3+</sup> to Fe<sup>2+</sup> in the complexes, leading to a weakening of absorption at 668 nm and dispersion of PNCs, resulting in the disappearance of the FRET process involved in PNCs. Based on the FRET switch, we have realized consecutive quantitative analysis of Fe<sup>3+</sup> and ascorbic acid in real samples. We expect that reversible FRET process can be regulated by aggregation-disaggregation instructed by coordination and redox reactions, and that the regulation strategy could significantly expand the application scope of PNCs in fluorescence detection.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111725"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1016/j.microc.2024.111702
Shayesteh Bazsefidpar , Clara Saweres-Argüelles , Gemma Gutiérrez , Maria Matos , Victor Calero , Esther Serrano-Pertierra , Pilar García , María del Carmen Blanco-López
Biofilms are communities of microorganisms that attach to biotic and abiotic surfaces. They cause infections and industrial contaminations that carry along serious health issues and great economic loss. The secreted extracellular polymeric substances enhance biofilm tolerance to antibiotics, biocides and host defenses. Therefore, there is an urgent need to develop new strategies for detecting and monitoring microbial biofilms in the early stages of formation. Biosensor technology can provide rapid detection, high selectivity and sensitivity using small, portable, simple, and low-cost devices. The selection of an appropriate molecular target involved in a regulatory network during different stages of biofilm formation determines the type of information the biosensor provides. This comprehensive review discusses the biomolecules that contribute to the formation of biofilms, with a particular emphasis on those involved in the initial stages, and their potential as specific targets for the early detection of these microbial structures. Additionally, we provide a critical analysis of the current state of biosensors for detecting biofilms, including recent work with rapid test based on lateral flow immunoassays (LFIA). The information analyzed in this review could guide the development of innovative biosensors or chemical sensors to detect the early formation of biofilms, contributing to the fight against antimicrobial resistance.
{"title":"Biomolecules for early detection of biofilms through point-of-use devices","authors":"Shayesteh Bazsefidpar , Clara Saweres-Argüelles , Gemma Gutiérrez , Maria Matos , Victor Calero , Esther Serrano-Pertierra , Pilar García , María del Carmen Blanco-López","doi":"10.1016/j.microc.2024.111702","DOIUrl":"10.1016/j.microc.2024.111702","url":null,"abstract":"<div><div>Biofilms are communities of microorganisms that attach to biotic and abiotic surfaces. They cause infections and industrial contaminations that carry along serious health issues and great economic loss. The secreted extracellular polymeric substances enhance biofilm tolerance to antibiotics, biocides and host defenses. Therefore, there is an urgent need to develop new strategies for detecting and monitoring microbial biofilms in the early stages of formation. Biosensor technology can provide rapid detection, high selectivity and sensitivity using small, portable, simple, and low-cost devices. The selection of an appropriate molecular target involved in a regulatory network during different stages of biofilm formation determines the type of information the biosensor provides. This comprehensive review discusses the biomolecules that contribute to the formation of biofilms, with a particular emphasis on those involved in the initial stages, and their potential as specific targets for the early detection of these microbial structures. Additionally, we provide a critical analysis of the current state of biosensors for detecting biofilms, including recent work with rapid test based on lateral flow immunoassays (LFIA). The information analyzed in this review could guide the development of innovative biosensors or chemical sensors to detect the early formation of biofilms, contributing to the fight against antimicrobial resistance.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111702"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1016/j.microc.2024.111700
Yao Jin, Xiangwei Yuan, Junchun Guo, Li Xu, Qian Wang, Xiaoli Xiong
Dopamine (DA) is a central neurotransmitter that plays a crucial role in human metabolism. Its precise detection is of great importance in disease diagnosis. Compared with single-signal detection methods, colorimetric and electrochemical dual-signal outputs can self-validate the measured data and counteract interference effects, which is expected to provide more reliable detection results. In this paper, carbon nanofiber-supported 3D bristlegrass-like π-conjugated conducting metal–organic frameworks (cMOF) Cu3(HHTP)2 nanorod arrays (Cu3(HHTP)2 NRAs/CNF) catalyst with core–shell structure are synthesized by electrospinning and solvothermal reaction. The obtained catalyst possesses remarkable peroxidase-like activity which can catalyze the colorless 3,3′,5,5′ −tetramethylbenzidine (TMB) to blue oxTMB. The mechanism study showes that ·OH radicals are the main active substances. Meanwhile, the core–shell structure between π-conjugated cMOF and CNF can effectively inhibit the aggregation of Cu3(HHTP)2 nanorods and generate more catalytic active sites, resulting in strong electrocatalytic activity of Cu3(HHTP)2 NRAs/CNF. As a result, a novel dual-mode sensor based on colorimetric and electrochemical are constructed for detecting dopamine (DA) with a good linear relationship ranging from 2.5-60 μM and 0.1–106 μM, and the limit of detection (LOD) are 0.27 μM and 10.1 nM (S/N=3), respectively. This study opens up a new idea for the application of cMOF peroxidase-like enzyme in sensing field.
{"title":"Core-shell structured carbon nanofiber-supported bristlegrass-like conductive metal‐organic framework Cu3(HHTP)2 nanorod arrays for electrochemical and colorimetric dual-mode detection of dopamine in serum","authors":"Yao Jin, Xiangwei Yuan, Junchun Guo, Li Xu, Qian Wang, Xiaoli Xiong","doi":"10.1016/j.microc.2024.111700","DOIUrl":"10.1016/j.microc.2024.111700","url":null,"abstract":"<div><div>Dopamine (DA) is a central neurotransmitter that plays a crucial role in human metabolism. Its precise detection is of great importance in disease diagnosis. Compared with single-signal detection methods, colorimetric and electrochemical dual-signal outputs can self-validate the measured data and counteract interference effects, which is expected to provide more reliable detection results. In this paper, carbon nanofiber-supported 3D bristlegrass-like π-conjugated conducting metal–organic frameworks (<em>c</em>MOF) Cu<sub>3</sub>(HHTP)<sub>2</sub> nanorod arrays (Cu<sub>3</sub>(HHTP)<sub>2</sub> NRAs/CNF) catalyst with core–shell structure are synthesized by electrospinning and solvothermal reaction. The obtained catalyst possesses remarkable peroxidase-like activity which can catalyze the colorless 3,3′,5,5′ −tetramethylbenzidine (TMB) to blue oxTMB. The mechanism study showes that ·OH radicals are the main active substances. Meanwhile, the core–shell structure between π-conjugated cMOF and CNF can effectively inhibit the aggregation of Cu<sub>3</sub>(HHTP)<sub>2</sub> nanorods and generate more catalytic active sites, resulting in strong electrocatalytic activity of Cu<sub>3</sub>(HHTP)<sub>2</sub> NRAs/CNF. As a result, a novel dual-mode sensor based on colorimetric and electrochemical are constructed for detecting dopamine (DA) with a good linear relationship ranging from 2.5-60 μM and 0.1–106 μM, and the limit of detection (LOD) are 0.27 μM and 10.1 nM (S/N=3), respectively. This study opens up a new idea for the application of <em>c</em>MOF peroxidase-like enzyme in sensing field.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111700"},"PeriodicalIF":4.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-18DOI: 10.1016/j.microc.2024.111697
Muhammad Imran , Amir Muhammad Afzal , Muhammad Waqas Iqbal , Ahmed M. Fouda , H.H. Hegazy , Sohail Mumtaz
Researchers are developing innovative electrode materials with high energy and power densities worldwide for effectual energy storage systems. The intriguing physical and chemical features of two dimensional (2D) metal organic frameworks (MOFs), transition metal dichalcogenides (TMDs) and their composites have gained much attention in energy storage devices. The 2D MOFs/TMDs are notable owing to their high electrical conductivity, wide surface area, and varying oxidation states. In light of these characteristics, 2D MOFs/TMDs are the best choice for implementing hybrid charge storage systems for storing electrical energy. This review discusses the recent developments in using 2D MOFs/TMDs as anode materials for energy storage devices. First, a summary of the distinctive characteristics of the category of 2D MOFs/TMDs materials is presented, emphasising the most recent design and application innovations in the disciplines of energy storage. Methodological and electrochemical presentations of all effective 2D MOFs/TMDs-based electrode materials are elucidated in detail. This paper aims to present a concise overview of 2D MOFs/TMDs materials’ structural and electrochemical characteristics. Newly constructed symmetric and asymmetric supercapacitors (ASCs) based on 2D MOFs/TMDs have also been reported. Our studies pave the way for further in-depth research into composite materials doped with 2D MOFs/TMDs as systematic energy-generating devices of the future.
{"title":"Two-dimensional MOFs@TMDs composites as a Striking electrode material for next generation energy storage electrochemical Devices: Recent development and future directions","authors":"Muhammad Imran , Amir Muhammad Afzal , Muhammad Waqas Iqbal , Ahmed M. Fouda , H.H. Hegazy , Sohail Mumtaz","doi":"10.1016/j.microc.2024.111697","DOIUrl":"10.1016/j.microc.2024.111697","url":null,"abstract":"<div><div>Researchers are developing innovative electrode materials with high energy and power densities worldwide for effectual energy storage systems. The intriguing physical and chemical features of two dimensional (2D) metal organic frameworks (MOFs), transition metal dichalcogenides (TMDs) and their composites have gained much attention in energy storage devices. The 2D MOFs/TMDs are notable owing to their high electrical conductivity, wide surface area, and varying oxidation states. In light of these characteristics, 2D MOFs/TMDs are the best choice for implementing hybrid charge storage systems for storing electrical energy. This review discusses the recent developments in using 2D MOFs/TMDs as anode materials for energy storage devices. First, a summary of the distinctive characteristics of the category of 2D MOFs/TMDs materials is presented, emphasising the most recent design and application innovations in the disciplines of energy storage. Methodological and electrochemical presentations of all effective 2D MOFs/TMDs-based electrode materials are elucidated in detail. This paper aims to present a concise overview of 2D MOFs/TMDs materials’ structural and electrochemical characteristics. Newly constructed symmetric and asymmetric supercapacitors (ASCs) based on 2D MOFs/TMDs have also been reported. Our studies pave the way for further in-depth research into composite materials doped with 2D MOFs/TMDs as systematic energy-generating devices of the future.</div></div>","PeriodicalId":391,"journal":{"name":"Microchemical Journal","volume":"207 ","pages":"Article 111697"},"PeriodicalIF":4.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142317835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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