Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy最新文献_第8页

High sensitive and selective multivariate detection of Hg2+ and Ag+ in real food samples via Ca, N-co-doped carbon dots based dual-mode platform 基于Ca， n共掺杂碳点的双模平台对真实食品样品中Hg2+和Ag+的高灵敏度和选择性多元检测

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-04 DOI: 10.1016/j.saa.2025.126536

Zhuoying Li , Linan Zhou , Fang Zhang , Huiyi Yang , Lihua Guo , Fang Chai

{"title":"High sensitive and selective multivariate detection of Hg2+ and Ag+ in real food samples via Ca, N-co-doped carbon dots based dual-mode platform","authors":"Zhuoying Li , Linan Zhou , Fang Zhang , Huiyi Yang , Lihua Guo , Fang Chai","doi":"10.1016/j.saa.2025.126536","DOIUrl":"10.1016/j.saa.2025.126536","url":null,"abstract":"<div><div>Heavy metals adversely affect the environment, ecosystems, and human health. The effective detection and treatment of heavy metals has become a major global concern. Herein, calcium and nitrogen co-doped carbon dots (E-CDs) were developed using cheap kitchen waste eggshells as precursors, and utilized as dual-mode fluorimetric/colorimetric sensor for the multivariate detection of Hg<sup>2+</sup> and Ag<sup>+</sup>. The E-CDs exhibited yellow emission at 420 nm excited at 567 nm, with a quantum yield of 15.49% and lifetime of 12.92 μs. The multivariate detection of Hg<sup>2+</sup> and Ag<sup>+</sup> can be achieved selectively by distinguishing via dual-mode respectively. The limit of detection (LOD) for Hg<sup>2+</sup> reached 11.28 nM, while the Ag<sup>+</sup> can be determined by fluorimetric/colorimetric dual-mode with LODs of 128.23 nM and 1.02 μM, respectively. Remarkably, the E-CDs integrated with a smartphone-based paper sensor supported by RGB analysis achieved the detection of Hg<sup>2+</sup> and Ag<sup>+</sup> with LODs of 56.2 nM and 90.96 nM, respectively. Notably, the recoveries in real samples attained 96.3–105.7% with excellent environmental tolerance. Furthermore, a logic gate circuit was developed to support the potential practical intelligent application. This work highlighted a cost-effective, multi-functional sensing strategy with significant potential for monitoring heavy metal contaminants in environmental and food safety applications.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126536"},"PeriodicalIF":4.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144221962","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}

引用次数: 0

A composite optical filter greenly fabricated for living algae detection 绿色制备的用于检测活藻的复合滤光片

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-04 DOI: 10.1016/j.saa.2025.126533

Wenshuai Tian , Xiaoshi Han , Zhiqian Li , Zhenhao Cao , Yongxin Song

{"title":"A composite optical filter greenly fabricated for living algae detection","authors":"Wenshuai Tian , Xiaoshi Han , Zhiqian Li , Zhenhao Cao , Yongxin Song","doi":"10.1016/j.saa.2025.126533","DOIUrl":"10.1016/j.saa.2025.126533","url":null,"abstract":"<div><div>The integration of optical filtration functionality into a lens and a microfluidic chip represents a promising approach for reducing the size of a microfluidic device. Greenly fabricating a composite polydimethylsiloxane (PDMS) filter (C-filter) with optical amplification function for chlorophyll fluorescence detection was proposed in this work. The core idea is to make the PDMS microfluidic chip as one sub-filter (S-filter) and enable another sub-filter amplification function (F-lens). The S-filter was prepared by soaking a PDMS microfluidic chip into Sudan II dye solved with ethanol. The F-lens is manufactured by sequentially mixing ethanol-solved crystal violet and the dimethyl-methylhydrogenosiloxane and dimethyl-methylvinylsiloxane for lens molding. Experimental results show that ethanol can serve as an effective and green substitute for phenol and toluene for dye dissolving. The dimethyl-methylhydrogenosiloxane can well dissolve crystal violet. The S-filter can filter light within the wavelength range of 400–500 nm, while the F-lens can filter light in the wavelength range of 500–650 nm. The C-filter shows a transmittance of 99.33 % in the wave length range of 650–710 nm, which is superior to the 96.72 % transmittance of commercial filters and is well-suited for living algae detection.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126533"},"PeriodicalIF":4.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230018","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}

引用次数: 0

A novel bioluminescent probe for detecting newly synthesized phosphatidylcholine 一种用于检测新合成的磷脂酰胆碱的新型生物发光探针

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-04 DOI: 10.1016/j.saa.2025.126485

Liya Ai , Yingzhuang Song , Shudi Liu , Zhijing Xu , Jinyu Sun

{"title":"A novel bioluminescent probe for detecting newly synthesized phosphatidylcholine","authors":"Liya Ai , Yingzhuang Song , Shudi Liu , Zhijing Xu , Jinyu Sun","doi":"10.1016/j.saa.2025.126485","DOIUrl":"10.1016/j.saa.2025.126485","url":null,"abstract":"<div><div>Phosphatidylcholine (PC), the most abundant phospholipid in eukaryotic membranes, plays critical roles in maintaining membrane integrity and mediating cellular signaling pathways. However, the absence of tools for spatiotemporal tracking and quantitative analysis of phospholipid dynamics poses a significant technical challenge. Herein, we present a bioorthogonal bioluminescence imaging system that combines metabolic labeling with caged chemistry for phospholipid detection. The methodology employs an aryl azide-derived choline analog (<strong>N-Cho</strong>) that incorporates into nascent PC through endogenous biosynthesis pathways. A caged luciferin derivative (<strong>TL-PDC</strong>), synthesized via diphenylphosphophenylacetic acid protection of D-luciferin’s phenolic hydroxyl group, undergoes Staudinger ligation with membrane-embedded <strong>N-Cho</strong>, triggering site-specific release of active D-luciferin. This initiates luciferase-catalyzed bioluminescence reactions that produce intense luminescent signal. Systematic validation confirmed <strong>TL-PDC</strong>’s exclusive molecular specificity and sensitivity towards N-Cho-labeled phospholipids, this methodology demonstrates significant potential for advancing biological studies requiring phospholipid detection and analysis.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126485"},"PeriodicalIF":4.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255470","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}

引用次数: 0

Study on real time response of live cells to lentivirus infection monitored by Raman spectroscopy 用拉曼光谱监测活细胞对慢病毒感染的实时反应研究

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-03 DOI: 10.1016/j.saa.2025.126535

Rheta Elkhaira, Keita Iwasaki, Hidetoshi Sato

{"title":"Study on real time response of live cells to lentivirus infection monitored by Raman spectroscopy","authors":"Rheta Elkhaira, Keita Iwasaki, Hidetoshi Sato","doi":"10.1016/j.saa.2025.126535","DOIUrl":"10.1016/j.saa.2025.126535","url":null,"abstract":"<div><div>The purpose of the present study is to investigate real time responses of live cells to　virus invasion. We employ recombinant lentivirus (rLV) and HEK293 cell for a model virus and a model cell, respectively. The rLV is not able to propagate in the cell but integrates its gene, green fluorescence protein (GFP) in the present case, into the genome of the host cell. Molecular compositional changes in the cells have been monitored during the viral invasion activity using Raman spectroscopy and principal components analysis (PCA). The cell with virus infection showed molecular changes which mostly attributed to protein at only 2 h post infection. It suggests that the molecular changes represent a very early cellular reaction against the viral invasion, because the changes have taken place too early to activate the reactions induced by the virus. We have successfully detected the molecular changes of the live cells also when they met the second viral infection. The results strongly suggest that the cell has a mechanism to detect the viral invasion into its body and initiates a quick reaction against the invasion.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126535"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242095","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}

引用次数: 0

A rhodamine 6G derivative for turn-on detection of Fe3+ and Cr3+: Cell imaging studies 一种罗丹明6G衍生物，用于Fe3+和Cr3+的开启检测：细胞成像研究

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-03 DOI: 10.1016/j.saa.2025.126532

Sneha Ghosh , Bhaskar Mallick , Bibhas Guha , Partha Roy

{"title":"A rhodamine 6G derivative for turn-on detection of Fe3+ and Cr3+: Cell imaging studies","authors":"Sneha Ghosh , Bhaskar Mallick , Bibhas Guha , Partha Roy","doi":"10.1016/j.saa.2025.126532","DOIUrl":"10.1016/j.saa.2025.126532","url":null,"abstract":"<div><div>Fluorescent chemosensors that were reported for the recognition of metal cations like Cr<sup>3+</sup> and Fe<sup>3+</sup> usually resulted in the fluorescence quenching on interaction with the cations. Herein we report a rhodamine based compound (L-Bz) that produces pink coloration and strong fluorescence increment in the occurrence of Cr<sup>3+</sup> and Fe<sup>3+</sup> in acetonitrile/water (HEPES buffer, <em>p</em>H 7.4, 99.5:0.5, v/v). It was synthesized by a reaction between N-(rhodamine-6G)lactam-ethylenediamine (L1) and 4-benzyloxy 2-hydroxybenzaldehyde (L2) in ethanol. Its absorption intensity enhanced at 530 nm significantly and fluorescence intensity was amplified at 550 nm by 281- and 130-fold in the presence of Cr<sup>3+</sup> and Fe<sup>3+</sup>, respectively. In the occurrence of these metal ions, spirolactam ring on L-Bz opens up to result the spectral changes. LOD values for Cr<sup>3+</sup> and Fe<sup>3+</sup> were determined in <em>n</em>M unit. Quantum yield and lifetime of L-Bz augmented in the presence of the cations. The rhodamine dye was utilized to sense the cations in HeLa cells.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126532"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255473","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}

引用次数: 0

Detection of microplastics in sea salt using hyperspectral imaging and machine learning methods: Pollution control in the Mediterranean sea as a case study 使用高光谱成像和机器学习方法检测海盐中的微塑料：以地中海污染控制为例研究

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-03 DOI: 10.1016/j.saa.2025.126528

Miriam Medina–García , Miguel A. Martínez-Domingo , Eva M. Valero , Luis Cuadros-Rodríguez , Ana M. Jiménez–Carvelo

{"title":"Detection of microplastics in sea salt using hyperspectral imaging and machine learning methods: Pollution control in the Mediterranean sea as a case study","authors":"Miriam Medina–García , Miguel A. Martínez-Domingo , Eva M. Valero , Luis Cuadros-Rodríguez , Ana M. Jiménez–Carvelo","doi":"10.1016/j.saa.2025.126528","DOIUrl":"10.1016/j.saa.2025.126528","url":null,"abstract":"<div><div>Microplastics represent 80% of the marine waste, becoming one of the main problems worldwide today, one of the reasons they have been categorised as the 10th greatest threat in the World Economic Forum’s Global Risks Report 2024. To address this issue, many recognised organisations have developed action plans for monitorization, mitigation and prevention of microplastic contamination. This includes the development of analytical methods for the detection, characterisation and quantification of these contaminants. In this regard, this work presents a novel approach for the direct detection and analytical evaluation of microplastics in sea salt sampled from solar sea saltworks. These factories act as a natural ’pre-concentrator’ of solid pollutants, and sea salt is thus a good indicator of their presence in the marine environment.</div><div>The developed methodology is based on the application of hyperspectral imaging a non-destructive/non-invasive analytical technique, in combination with machine learning methods, to detect five of the most common microplastics (PE, PET, PS, PP, PVC) in natural sea salt samples collected directly from a solar saltworks located on the Mediterranean coast of southern Spain. For this purpose, some key features were assessed to develop the methodology, including sample bank generation, particle size determination, imaging conditions, and others. Finally, once the HSI analyses were performed directly on the solid salt samples, partial least square-discriminant analysis was applied to develop a classification model capable of identifying salt-containing pixels and thus detecting µP pollution.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126528"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144221960","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}

引用次数: 0

Ultrafast spectral analysis on the spin relaxation dynamics in strongly confined CsPbBr3 nanocrystals 强约束CsPbBr3纳米晶体自旋弛豫动力学的超快光谱分析

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-03 DOI: 10.1016/j.saa.2025.126534

Zixiang Zhou , Rongxin Zhang , Lei Wang, Xin Zhang, Meihua Chen, Zixi Yin, Ying Liang, Guijie Liang

{"title":"Ultrafast spectral analysis on the spin relaxation dynamics in strongly confined CsPbBr3 nanocrystals","authors":"Zixiang Zhou , Rongxin Zhang , Lei Wang, Xin Zhang, Meihua Chen, Zixi Yin, Ying Liang, Guijie Liang","doi":"10.1016/j.saa.2025.126534","DOIUrl":"10.1016/j.saa.2025.126534","url":null,"abstract":"<div><div>Owing to the facile optical orientation of spin-polarized states in lead halide perovskites (LHPs), extensive efforts have been devoted to their efficient spin detection and manipulation for applications of spintronics or quantum information science. Among usual characterization methods for exploring the exciton spin dynamics, the circularly polarized transient absorption (CPTA) spectroscopy is an important one. Herein, three small-sized CsPbBr<sub>3</sub> nanocrystals (NCs) (3.2–4.3 nm) are synthesized and their spin relaxation dynamics are analyzed by employing CPTA spectroscopy. The results reveal that for CsPbBr<sub>3</sub> NCs with strong quantum confinement, expecially for the 3.2 nm CsPbBr<sub>3</sub>, the spin relaxation time derived from the second photo-induced absorption (PA2) kinetics at larger wavelength is much longer than those from the first exciton bleach (XB) and the first photo-induced absorption (PA1). In other words, the PA2 kinetics can reflect more accurate spin relaxation process in strongly confined NCs. This phenomenen can be attributed to the dominant Coulomb interaction between the band edge excitons for PA2 kinetics, while the other two kinetics of XB and PA1 are more sensitive to hot exciton relaxation. Considering the common issues that inhomogeneity generally exists in small-sized NCs due to difficult synthesis, this study could provide further insight for exploring the spin relaxation dynamics by CPTA spectroscopy in strongly confined LHPs NCs and benefit related applications in spintronics or quantum information science.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126534"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144221963","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}

引用次数: 0

Kinetic analysis of thermally induced polymorphic transition in HMX using terahertz spectroscopy HMX中热致多晶转变的太赫兹光谱动力学分析

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-03 DOI: 10.1016/j.saa.2025.126515

Quancheng Liu , Hang Su , Xiaoxia Li , Zhengwen Zhang , Lingdi Li , Qi Zhang

{"title":"Kinetic analysis of thermally induced polymorphic transition in HMX using terahertz spectroscopy","authors":"Quancheng Liu , Hang Su , Xiaoxia Li , Zhengwen Zhang , Lingdi Li , Qi Zhang","doi":"10.1016/j.saa.2025.126515","DOIUrl":"10.1016/j.saa.2025.126515","url":null,"abstract":"<div><div>Understanding the kinetics of polymorphic transitions is critical for predicting and controlling phase behavior in functional materials. Although terahertz spectroscopy has been established as a reliable technique for identifying polymorphic forms, its application in analyzing transition kinetics remains underexplored. In this study, terahertz time-domain spectroscopy (THz-TDS) was employed to monitor the thermally induced β-to-δ polymorphic transition in HMX. Principal component analysis enabled segmentation of the spectral evolution, allowing precise identification of intermediate transformation stages. Density functional theory calculations, combined with analysis of thermally activated anharmonic vibrational modes, revealed that nitro-group motion facilitates the transition by lowering activation barriers. A logistic relationship between absorption intensity and transformation time was observed, consistent with a cooperative nucleation-and-growth mechanism governed by thermal input. These results demonstrate the capacity of THz spectroscopy to dynamically monitor polymorphic transition kinetics at the molecular level.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126515"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230017","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}

引用次数: 0

Metabolic fingerprinting of human plasma in dementia: A pilot study of metabolome decomposition 痴呆患者血浆代谢指纹图谱：代谢组分解的初步研究

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-02 DOI: 10.1016/j.saa.2025.126507

Kambiz Gilany , Akram Tayanloo-Beik , Moloud Payab , Naser Jafarzadeh , B. Fatemeh Nobakht , Mahbube Ebrahimpur , Mitra Moodi , Masoumeh Khorashadizadeh , Hossein Fakhrzadeh , Babak Arjmand , Farshad Sharifi

{"title":"Metabolic fingerprinting of human plasma in dementia: A pilot study of metabolome decomposition","authors":"Kambiz Gilany , Akram Tayanloo-Beik , Moloud Payab , Naser Jafarzadeh , B. Fatemeh Nobakht , Mahbube Ebrahimpur , Mitra Moodi , Masoumeh Khorashadizadeh , Hossein Fakhrzadeh , Babak Arjmand , Farshad Sharifi","doi":"10.1016/j.saa.2025.126507","DOIUrl":"10.1016/j.saa.2025.126507","url":null,"abstract":"<div><h3>Background</h3><div>As the number of people with dementia grows, it becomes even more important to improve how it is diagnosed and treated. Metabolomics, the study of small molecule metabolites in biological systems, helps us learn a lot about dementia by revealing changes in the brain’s systems through blood plasma research.</div></div><div><h3>Objective</h3><div>The objective of this study is to clarify the changes in metabolism that are linked to dementia. This will be achieved by using metabolic fingerprinting techniques on human plasma to differentiate between patients with dementia and individuals who have normal cognitive function.</div></div><div><h3>Methods</h3><div>This study used data from the Birjand Longitudinal Aging Study and high-tech Raman Spectroscopy, as well as multivariate statistical methods such as PCA and OPLS-DA. The study looked at 34 people with dementia and 34 people who did not have any cognitive damage.</div></div><div><h3>Results</h3><div>Metabolic fingerprints distinguished two groups with extremely distinct metabolic characteristics. Main findings demonstrate that oxidative stress and energy metabolism metabolites have changed significantly. OPLS-DA distinguished healthy and dementia samples with high accuracy and sensitivity. Both the expected high model accuracy and the clear score plot split confirmed this.</div></div><div><h3>Conclusion</h3><div>The metabolic deviations detected offer a deeper understanding of the biochemical processes associated with dementia. These results enhance our understanding of dementia-related biochemical changes and underscore the exploratory potential of Raman-based metabolomic fingerprinting as a complementary, non-invasive approach for identifying broader functional group-level alterations.</div></div>","PeriodicalId":433,"journal":{"name":"Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy","volume":"343 ","pages":"Article 126507"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205683","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}

引用次数: 0

A unified model of the intensity equations in Angle-Resolved Polarized Raman Spectroscopy 角分辨偏振拉曼光谱强度方程的统一模型

IF 4.3 2区化学

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-06-02 DOI: 10.1016/j.saa.2025.126365

Hongjin Xiong , Weirui Yu , Jieli Liu , Zhiwei Chen , Yuanqiang He , Chao Wang , Yikun Su , Jinlai Zhao

引用次数: 0