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Wang D, Zhang L, Zeng J, Wang S, Li W, Sun Y, Wu W, Tian ZQ, Zhang Z. A sensitive intelligent point-of-care test method for tert-butylhydroquinone in edible oil via a test strip with a smartphone. Food Chem 2024; 460:140625. [PMID: 39089030 DOI: 10.1016/j.foodchem.2024.140625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/22/2024] [Accepted: 07/23/2024] [Indexed: 08/03/2024]
Abstract
Tert-butylhydroquinone (TBHQ) is easily overused or illegally added to edible oil and attracts a growing concern because of its cytotoxic, liver-damaging, and carcinogenic effects. Thus, a sensitive and intelligent point-of-care testing (iPOCT) method is developed to fulfill the on-site monitoring. This iPOCT method depended on a fluorescent immunochromatographic assay within 15 min. Under optimization, the limit of quantification (LOQ) was calculated as 0.03 μg mL-1. The iPOCT method provided a low limit of detection (LOD) of 0.02 μg mL-1, a wide linear range of 0.03-100 μg mL-1, and great selectivity. Recoveries by the spiking experiments ranged from 97.4% to 103.5% with relative standard deviations (RSDs) of 2.4%-4.9% in soybean, peanut, rapeseed, and corn oil samples. The results showed that the iPOCT method is highly consistent with the high-performance liquid chromatography (HPLC) method.
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Affiliation(s)
- Dan Wang
- School of Bioengineering and Health, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, PR China; School of Ecology and Environmental, Tibet University, Lhasa 850000, PR China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Le Zhang
- School of Ecology and Environmental, Tibet University, Lhasa 850000, PR China
| | - Jing Zeng
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Hongshan Laboratory, Hubei, Wuhan, 430062, PR China
| | - Shenling Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Hongshan Laboratory, Hubei, Wuhan, 430062, PR China
| | - Wangwang Li
- School of Ecology and Environmental, Tibet University, Lhasa 850000, PR China
| | - Yuanlong Sun
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
| | - Wenqin Wu
- School of Bioengineering and Health, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, PR China.
| | - Zhi-Quan Tian
- School of Ecology and Environmental, Tibet University, Lhasa 850000, PR China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China.
| | - Zhaowei Zhang
- School of Bioengineering and Health, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, PR China; Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Hongshan Laboratory, Hubei, Wuhan, 430062, PR China.
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Li W, Chen Y, Li X, Zhong Y, Xu P, Teng Y. Ultrasensitive SERS quantitative detection of antioxidants via diazo derivatization reaction and deep learning for signal fluctuation mitigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 313:124086. [PMID: 38442618 DOI: 10.1016/j.saa.2024.124086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 01/20/2024] [Accepted: 02/24/2024] [Indexed: 03/07/2024]
Abstract
Synthetic antioxidants serve as essential protectors against oxidation and deterioration of edible oils, however, prudent evaluation is necessary regarding potential health risks associated with excessive intake. The direct adsorption of antioxidants onto conventional surface-enhanced Raman scattering (SERS) substrates is challenging due to the presence of phenolic hydroxyl groups in their molecular structures, resulting in weak Raman scattering signals and rendering direct SERS detection difficult. In this study, a diazo derivatization reaction was employed to enhance SERS signals by converting antioxidant molecules into azo derivatives, enabling the amplification of the weak Raman scattering signals through the strong vibrational modes induced by the N = N double bond. The resulting diazo derivatives were characterized using UV-visible absorption and infrared spectroscopy, confirming the occurrence of diazo derivatization of the antioxidants. The proposed method successfully achieved the rapid detection of three commonly used synthetic antioxidants, namely butylated hydroxyanisole (BHA), tert-butylhydroquinone (TBHQ), and propyl gallate (PG) on interfacial self-assembled gold nanoparticles. Furthermore, rapid predictions of BHA, PG, and TBHQ within the concentration range of 1 × 10-6 to 2 × 10-3 mol/L were achieved by integrating a convolutional neural network model. The predictive range of this model surpassed the traditional quantitative method of manually selecting characteristic peaks, with linear coefficients (R2) of 0.9992, 0.9997, and 0.9997, respectively. The recovery of antioxidants in real soybean oil samples ranged from 73.0 % to 126.4 %. Based on diazo derivatization, the proposed SERS method eliminates the need for complex substrates and enables the analysis and determination of synthetic antioxidants in edible oils within 20 min, providing a convenient analytical approach for quality control in the food industry.
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Affiliation(s)
- Wenhui Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yingxin Chen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Xin Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yi Zhong
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Pei Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Yuanjie Teng
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
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Kong J, Zhou F. Preparation and Application of Carbon Dots Nanozymes. Antioxidants (Basel) 2024; 13:535. [PMID: 38790640 PMCID: PMC11117996 DOI: 10.3390/antiox13050535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/18/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024] Open
Abstract
Carbon dot (CD) nanozymes have enzyme-like activity. Compared with natural enzymes, CD nanozymes offer several advantages, including simple preparation, easy preservation, good stability and recycling, which has made them a popular research topic in various fields. In recent years, researchers have prepared a variety of CD nanozymes for biosensing detection, medicine and tumor therapy, and many of them are based on oxidative stress regulation and reactive oxygen species clearance. Particularly to expand their potential applications, elemental doping has been utilized to enhance the catalytic capabilities and other properties of CD nanozymes. This review discusses the prevalent techniques utilized in the synthesis of CD nanozymes and presents the diverse applications of CD nanozymes based on their doping characteristics. Finally, the challenges encountered in the current utilization of CD nanozymes are presented. The latest research progress of synthesis, application and the challenges outlined in the review can help and encourage the researchers for the future research on preparation, application and other related researches of CD nanozymes.
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Yin Q, Yang X, Yang L, Yang D, Yang Y, Zhu Y. Cu, I-doped carbon dots as simulated nanozymes for the colorimetric detection of morphine in biological samples. Anal Biochem 2023; 680:115313. [PMID: 37678583 DOI: 10.1016/j.ab.2023.115313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/24/2023] [Accepted: 09/03/2023] [Indexed: 09/09/2023]
Abstract
As newly developed synthetic enzymes with exceptional catalytic capabilities and outstanding stability, nanozymes have drawn considerable interest in the realm of sensing. Using a simple hydrothermal process, iodine and copper-doped carbon dots (Cu,I-CDs) with simulated enzymes were fabricated in the current investigation. Cu,I-CDs demonstrate peroxidase-mimicking function together with high catalytic effectiveness due to aforementioned features. This led to generation of a colorimetric sensor for quick and accurate quantitative assessment of morphine (MOR). The outcomes showed the method's usefulness for the colorimetric detection of MOR. The linear range for MOR detection is 0.25-25 μg/mL having a reduced detection limit of 64 ng/mL. This sensor's successful use in the analysis of MOR in biological material is more noteworthy.
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Affiliation(s)
- Qinhong Yin
- Key Laboratory of Smart Drugs Control, Ministry of Education, Kunming, 650223, China; Yunnan Key Laboratory of Smart Drugs Control, Kunming, 650223, China; Yunnan Police College, Kunming, 650223, China
| | - Xiaolan Yang
- Key Laboratory of Natural Products Synthetic Biology of Ethnic Medicina Endophytes, Yunnan Minzu University, Kunming, 650500, China
| | - Lihua Yang
- Key Laboratory of Smart Drugs Control, Ministry of Education, Kunming, 650223, China; Yunnan Key Laboratory of Smart Drugs Control, Kunming, 650223, China; Yunnan Police College, Kunming, 650223, China
| | - Dezhi Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Yaling Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
| | - Yanqin Zhu
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, China.
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Wang M, Liu H, Fan K. Signal Amplification Strategy Design in Nanozyme-Based Biosensors for Highly Sensitive Detection of Trace Biomarkers. SMALL METHODS 2023; 7:e2301049. [PMID: 37817364 DOI: 10.1002/smtd.202301049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/12/2023] [Indexed: 10/12/2023]
Abstract
Nanozymes show great promise in enhancing disease biomarker sensing by leveraging their physicochemical properties and enzymatic activities. These qualities facilitate signal amplification and matrix effects reduction, thus boosting biomarker sensing performance. In this review, recent studies from the last five years, concentrating on disease biomarker detection improvement through nanozyme-based biosensing are examined. This enhancement primarily involves the modulations of the size, morphology, doping, modification, electromagnetic mechanisms, electron conduction efficiency, and surface plasmon resonance effects of nanozymes for increased sensitivity. In addition, a comprehensive description of the synthesis and tuning strategies employed for nanozymes has been provided. This includes a detailed elucidation of their catalytic mechanisms in alignment with the fundamental principles of enhanced sensing technology, accompanied by the presentation of quantitatively analyzed results. Moreover, the diverse applications of nanozymes in strip sensing, colorimetric sensing, electrochemical sensing, and surface-enhanced Raman scattering have been outlined. Additionally, the limitations, challenges, and corresponding recommendations concerning the application of nanozymes in biosensing have been summarized. Furthermore, insights have been offered into the future development and outlook of nanozymes for biosensing. This review aims to serve not only as a reference for enhancing the sensitivity of nanozyme-based biosensors but also as a catalyst for exploring nanozyme properties and their broader applications in biosensing.
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Affiliation(s)
- Mengting Wang
- Guangdong Provincial Key Laboratory of Urology, Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou Institute of Urology, Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Hongxing Liu
- Guangdong Provincial Key Laboratory of Urology, Guangdong Engineering Research Center of Urinary Minimally Invasive Surgery Robot and Intelligent Equipment, Guangzhou Institute of Urology, Department of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Kelong Fan
- CAS Engineering Laboratory for Nanozyme, Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
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Ma T, Huang K, Cheng N. Recent Advances in Nanozyme-Mediated Strategies for Pathogen Detection and Control. Int J Mol Sci 2023; 24:13342. [PMID: 37686145 PMCID: PMC10487713 DOI: 10.3390/ijms241713342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/13/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
Pathogen detection and control have long presented formidable challenges in the domains of medicine and public health. This review paper underscores the potential of nanozymes as emerging bio-mimetic enzymes that hold promise in effectively tackling these challenges. The key features and advantages of nanozymes are introduced, encompassing their comparable catalytic activity to natural enzymes, enhanced stability and reliability, cost effectiveness, and straightforward preparation methods. Subsequently, the paper delves into the detailed utilization of nanozymes for pathogen detection. This includes their application as biosensors, facilitating rapid and sensitive identification of diverse pathogens, including bacteria, viruses, and plasmodium. Furthermore, the paper explores strategies employing nanozymes for pathogen control, such as the regulation of reactive oxygen species (ROS), HOBr/Cl regulation, and clearance of extracellular DNA to impede pathogen growth and transmission. The review underscores the vast potential of nanozymes in pathogen detection and control through numerous specific examples and case studies. The authors highlight the efficiency, rapidity, and specificity of pathogen detection achieved with nanozymes, employing various strategies. They also demonstrate the feasibility of nanozymes in hindering pathogen growth and transmission. These innovative approaches employing nanozymes are projected to provide novel options for early disease diagnoses, treatment, and prevention. Through a comprehensive discourse on the characteristics and advantages of nanozymes, as well as diverse application approaches, this paper serves as a crucial reference and guide for further research and development in nanozyme technology. The expectation is that such advancements will significantly contribute to enhancing disease control measures and improving public health outcomes.
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Affiliation(s)
- Tianyi Ma
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.M.); (K.H.)
| | - Kunlun Huang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.M.); (K.H.)
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture, Beijing 100083, China
| | - Nan Cheng
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (T.M.); (K.H.)
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture, Beijing 100083, China
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Li Q, Li H, Li K, Gu Y, Wang Y, Yang D, Yang Y, Gao L. Specific colorimetric detection of methylmercury based on peroxidase-like activity regulation of carbon dots/Au NPs nanozyme. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129919. [PMID: 36099738 DOI: 10.1016/j.jhazmat.2022.129919] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/23/2022] [Accepted: 09/03/2022] [Indexed: 06/15/2023]
Abstract
Methylmercury (MeHg+) is one of the common organic species of mercury, and has much higher toxicity than inorganic mercury. Based on the selective enhancement of the activity of nanozyme (NA-CDs/AuNPs) by MeHg+, a novel colorimetric nanoprobe for MeHg+ assay is proposed. The noradrenaline-based carbon dots (NA-CDs) as the reducing agent was applied to prepare the NA-CDs/AuNPs. The formation of gold amalgamation (Au@HgNPs) between nanozyme and MeHg+ allows to simultaneously accelerate the electron transfer from Au and Hg to NA-CDs and the generation of radicals (i.e. ∙OH, ∙O2- and ∙CH3). The NA-CDs/AuNPs has an outstanding anti-interference performance even in the presence of different mercury. Further density functionality theory (DFT) calculations revealed that the formation of Au@HgNPs via MeHg+ contributes to the significantly lowered activation energy, resulting in the peroxidase-like activity generation and acceleration. This leads to rapid (10 min) and specific colorimetric detection of MeHg+ with the detection limit of 0.06 μg L-1. This introduces a novel method for simple and sensitive detection of MeHg+, giving a new horizon for the assay of organometallic compounds.
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Affiliation(s)
- Qiulan Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Hong Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; Institute of Agro-Products Processing, Yunnan Academy of Agricultural Sciences, Kunming 650093, Yunnan, China
| | - Kexiang Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Yi Gu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Yijie Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Dezhi Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization/Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China.
| | - Yaling Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
| | - Lei Gao
- Faculty of Science, Kunming University of Science and Technology, Kunming 650500, Yunan, China
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