Visualization and quantification of content and hydrogen bonding state of water in apple and potato cells by confocal Raman microscopy: A comparison study DOI Creative Commons
Dongmei Li, Zhiwei Zhu, Da‐Wen Sun

et al.

Food Chemistry, Journal Year: 2022, Volume and Issue: 385, P. 132679 - 132679

Published: March 10, 2022

Water is the most abundant component in fresh fruit and vegetables its distribution hydrogen bonding state cells has a significant influence on food processing. In current study, an improved method based our earlier studies was developed to directly visualize spatial of content water apple potato for first time difference these compared. Additionally, images different regions tissues, total free contents, were quantified compared with those obtained by nuclear magnetic resonance Marinchik methods, demonstrating that could be successfully used quantifying vegetable cells.

Language: Английский

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates DOI Creative Commons
Chunchun Li, Yiming Huang, Xinyuan Li

et al.

Journal of Materials Chemistry C, Journal Year: 2021, Volume and Issue: 9(35), P. 11517 - 11552

Published: Jan. 1, 2021

Here, we review the state-of-the-art progress in construction of smart multifunctional enhancing substrates. These substrates hold key to achieving sustainability and widespread applications SERS.

Language: Английский

Citations

160
Ti3C2Tx MXenes loaded with Au nanoparticle dimers as a surface-enhanced Raman scattering aptasensor for AFB1 detection DOI Creative Commons
Zhihui Wu, Da‐Wen Sun, Hongbin Pu

et al.

Food Chemistry, Journal Year: 2021, Volume and Issue: 372, P. 131293 - 131293

Published: Oct. 2, 2021

Mycotoxin B1 (AFB1) contamination in agricultural products pose a deadlydangertoanimal and human health its rapid reliable detection is thus very important. Herein, ratiometric surface-enhanced Raman scattering (SERS) aptasensor for AFB1 was developed, which 1,2-bis(4-pyridyl) ethylene (BPE) used to trigger the assembly of Au nanoparticle dimers (AuNP dimers) form intensive SERS "hot spots", MXenes nanosheets could load aptamer-modified AuNP due hydrogen bonding chelation between phosphate groups aptamers Ti ion MXenes. With presence preferentially binding aptamer, were separated from nanosheets, leading decrease intensity. Regression analysis range 0.001 100 ng·mL-1 showed limit (LOD) being 0.6 pg·mL-1 standard solution, indicating that great prospects dimers/MXenes substrate detecting AFB1.

Language: Английский

Citations

147
Magnetic surface-enhanced Raman scattering (MagSERS) biosensors for microbial food safety: Fundamentals and applications DOI Creative Commons
Cuiyun Zhang, Lunjie Huang, Hongbin Pu

et al.

Trends in Food Science & Technology, Journal Year: 2021, Volume and Issue: 113, P. 366 - 381

Published: May 16, 2021

Microbiological safety of food is closely related to the activities foodborne microorganisms, which among critical issues in industry that require careful screening. A series analytical techniques have been employed for microbiological detection but renders either defects or practical limitations. With sensitive and fingerprint sensing ability surface-enhanced Raman scattering (SERS) technique easy operations magnetic entities (MEs), SERS-based platforms (MagSERS) emerge as a potent candidate analysis hazards. The current review focuses on fundamentals recent applications MagSERS food. In this review, design fabrication are introduced, comprises functionalized MEs plus noble-metal SERS substrates, nanocomposites principles illustrated detail, including combination capture, separation, enrichment targets (via recognition elements MEs) with well magnetism-mediated hotspot engineering substrates. addition, advances methods detecting bacteria, biological toxins, viruses summarized future perspectives also given. Key findings conclusions: As demonstrated by publications field, merges properties spectra can facilitate biohazards their excellent target separation (sampling), simplified assay procedures (assaying), optimized effect signal signalling. such, show promising prospect construction more simple, rapid, biosensors safety.

Language: Английский

Citations

110
A novel fluorescence biosensor based on CRISPR/Cas12a integrated MXenes for detecting Aflatoxin B1 DOI Creative Commons
Zhihui Wu, Da‐Wen Sun, Hongbin Pu

et al.

Talanta, Journal Year: 2022, Volume and Issue: 252, P. 123773 - 123773

Published: Aug. 6, 2022

Aflatoxin B1 (AFB1) contamination in food threatens global safety, and rapid quantitative detection of AFB1 remains a challenge. Herein, novel fluorescence biosensor was developed for based on CRISPR/Cas12a MXenes. Specifically, the well-designed activator locked by dual-AFB1 aptamers, Cas12a directly linked to crRNA form inactivated complexes, MXenes efficiently adsorbed FAM fluorophore-modified single-stranded DNA (ssDNA-FAM), quenching its fluorescence. In presence AFB1, released due preferential binding aptamer then activated trans-cleavage activity indiscriminately cleave ssDNA MXenes, leading recovery signal. The fluorescent had wide range from 0.001 80 ng mL-1, limit 0.92 pg ability detect within min. More importantly, platform demonstrates excellent performance real peanut samples.

Language: Английский

Citations

94
Surface-Enhanced Raman Spectroscopy Substrates for Food Safety and Quality Analysis DOI
Azadeh Nilghaz, Seyed Mahdi Mousavi, Amir Amiri

et al.

Journal of Agricultural and Food Chemistry, Journal Year: 2022, Volume and Issue: 70(18), P. 5463 - 5476

Published: April 26, 2022

Surface-enhanced Raman spectroscopy (SERS) has been identified as a fundamental surface-sensitive technique that boosts scattering by adsorbing target molecules on specific surfaces. The application of SERS highly relies the development smart substrates, and thus fabrication substrates constantly improved. Herein, we investigate impacts different technology including plasmonic metal nanoparticles, semiconductors, hybrid systems in quantitative food safety quality analysis. We first discuss fundamentals, substrate designs, applications SERS. then provide critical review recent progress its usage for screening detecting chemical biological contaminants fungicides, herbicides, insecticides, hazardous colorants, biohazards samples to assess analytical capabilities this technology. Finally, future trends practical techniques could be used fulfill requirements rapid analysis at low cost.

Language: Английский

Citations

93
State of the art in flexible SERS sensors toward label-free and onsite detection: from design to applications DOI

Liping Xie,

Hedele Zeng,

Jiaxin Zhu

et al.

Nano Research, Journal Year: 2022, Volume and Issue: 15(5), P. 4374 - 4394

Published: Jan. 6, 2022

Language: Английский

Citations

92
Advances in metal-organic framework-plasmonic metal composites based SERS platforms: Engineering strategies in chemical sensing, practical applications and future perspectives in food safety DOI
Kuan Chang, Zhefei Zhao, Minglin Wang

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 459, P. 141539 - 141539

Published: Jan. 23, 2023

Language: Английский

Citations

85
Flexible sensing enabled agri-food cold chain quality control: A review of mechanism analysis, emerging applications, and system integration DOI
Wentao Huang, Xuepei Wang, Jie Xia

et al.

Trends in Food Science & Technology, Journal Year: 2023, Volume and Issue: 133, P. 189 - 204

Published: Feb. 11, 2023

Language: Английский

Citations

82
Recent Trends in SERS-Based Plasmonic Sensors for Disease Diagnostics, Biomolecules Detection, and Machine Learning Techniques DOI Creative Commons
Reshma Beeram,

Kameswara Rao Vepa,

S. Venugopal Rao

et al.

Biosensors, Journal Year: 2023, Volume and Issue: 13(3), P. 328 - 328

Published: Feb. 27, 2023

Surface-enhanced Raman spectroscopy/scattering (SERS) has evolved into a popular tool for applications in biology and medicine owing to its ease-of-use, non-destructive, label-free approach. Advances plasmonics instrumentation have enabled the realization of SERS’s full potential trace detection biomolecules, disease diagnostics, monitoring. We provide brief review on recent developments SERS technique biosensing applications, with particular focus machine learning techniques used same. Initially, article discusses need plasmonic sensors advantage over existing techniques. In later sections, are organized as SERS-based diagnosis focusing cancer identification respiratory diseases, including SARS-CoV-2 detection. then discuss progress sensing microorganisms, such bacteria, detecting biohazardous materials view homeland security. At end article, we (a) identification, (b) classification, (c) quantification applications. The covers work from 2010 onwards, language is simplified suit needs interdisciplinary audience.

Language: Английский

Citations

81
Mesoporous silica coated core-shell nanoparticles substrate for size-selective SERS detection of chloramphenicol DOI Creative Commons
Heera Jayan, Da‐Wen Sun, Hongbin Pu

et al.

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2022, Volume and Issue: 284, P. 121817 - 121817

Published: Aug. 30, 2022

With the growing popularity of non-destructive technique, surface-enhanced Raman spectroscopy (SERS) demands a highly sensitive and reproducible plasmonic nanoparticles substrate. In this study, novel bimetallic core-shell (Au@Ag@mSiO2NP) substrate consisting gold core, silver shell, mesoporous silica coating was synthesized. The structure created by employing template molecules such as surfactant their subsequent removal allowing selective screening based on size analyte molecules. Results showed that could selectively enhance small preventing large macromolecules to reach exciting zone achieving detection chloramphenicol in milk samples with limit 6.68 × 10-8 M. Moreover, provided additional stability Au@Ag nanoparticles, leading reusability Thus, work offered simple smart Au@Ag@mSiO2NP for effective SERS analytes.

Language: Английский

Citations

78