Analytical Sciences最新文献

The impact of initial cooling rates on cell preservation in frozen water-dimethyl sulfoxide media: a morphological study. 初始冷却速率对冷冻水-二甲基亚砜介质中细胞保存的影响：形态学研究。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-04 DOI: 10.1007/s44211-025-00815-8

Rinko Sabanai, Yoshifumi Suzuki, Takafumi Mizushige, Nobuo Uehara, Arinori Inagawa

{"title":"The impact of initial cooling rates on cell preservation in frozen water-dimethyl sulfoxide media: a morphological study.","authors":"Rinko Sabanai, Yoshifumi Suzuki, Takafumi Mizushige, Nobuo Uehara, Arinori Inagawa","doi":"10.1007/s44211-025-00815-8","DOIUrl":"https://doi.org/10.1007/s44211-025-00815-8","url":null,"abstract":"We investigated the morphological features of a freeze-concentrated solution (FCS) formed in frozen aqueous dimethyl sulfoxide (DMSO) solutions for cell cryopreservation. Specifically, we investigated the effects of cooling rates and initial DMSO concentrations on FCS morphology. At a cooling rate of 1 ℃/min, relatively large FCS channels formed owing to the crystallization of the extracellular ice crystals, accommodating cells effectively. Conversely, rapid cooling rates resulted in fine ice crystals, leading to the formation of narrower FCS channels. Slow cooling promoted cell accommodation, attributed to ice crystal reorientation and larger FCS sizes, underscoring the impact of FCS width profiles on cell accumulation during freezing. The recovery of C2C12 myoblasts was also studied by altering the freezing rate. The cell recovery rate of C2C12 myoblasts demonstrated that slow cooling improved recovery, whereas rapid cooling decreased it. Medium cooling rates showed greater variability in recovery, suggesting reduced consistency in cryopreservation outcomes. While numerous factors determine cell viability during freezing processes, our findings highlight FCS morphology as a critical determinant in designing effective cryopreservation protocols.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 green and engineered magnetic ionic liquid system for selective extraction and trace determination of thorium in industrial and environmental samples. 用于工业和环境样品中钍的选择性提取和痕量测定的绿色工程磁性离子液体系统。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-02 DOI: 10.1007/s44211-025-00820-x

Mehdi Hosseini

引用次数: 0

High-throughput HPLC-SERS capable of generating a spectrum from individual eluent droplets based on a superhydrophobic SERS array. 基于超疏水SERS阵列的高通量HPLC-SERS能够从单个洗脱液液滴产生光谱。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-01 Epub Date: 2025-05-06 DOI: 10.1007/s44211-025-00761-5

Umi Yamaguchi, Hiroaki Honda, Shusuke Kumagai, Hiroyuki Takei

{"title":"High-throughput HPLC-SERS capable of generating a spectrum from individual eluent droplets based on a superhydrophobic SERS array.","authors":"Umi Yamaguchi, Hiroaki Honda, Shusuke Kumagai, Hiroyuki Takei","doi":"10.1007/s44211-025-00761-5","DOIUrl":"10.1007/s44211-025-00761-5","url":null,"abstract":"We have developed a protocol for a high-throughput high-performance liquid chromatography-surface enhanced Raman spectroscopy (HPLC-SERS), whereby a 15 μL eluent droplet was captured every second and a series of SERS spectra was obtained to show a time course in the chemical composition within the eluent. To accomplish this, we prepared arrays of SERS spots based on metal film on nanosphere (MFON). Fifty of these spots 3 mm in diameter were formed in a 5 by 10 array format on a special glass slide covered by a hydrophobic coating. In a second version, the SERS spot size was reduced to 1 mm, surrounded by a superhydrophobic area with a contact angle greater than 120 degrees. Here, 2 μL of the eluent droplet was placed on each spot. Heating of the array substrate allowed complete evaporation of the droplet under 3 min, without the adverse coffee ring effect. We demonstrated the utility of such a setup by injecting 1 mM adenine into a portable HPLC instrument and capturing the time course of SERS spectra. We characterize our MFON SERS spots in terms of its dependence on the concentration and incubation time as well as a two-dimensional SERS imaging showing the uniformity in the signal intensity.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":"1083-1088"},"PeriodicalIF":1.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143952746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Determination of volatile organic compounds released by Trichoderma species and plant endophytic fungi using a needle-type extraction device and gas chromatography-mass spectrometry. 针式萃取-气相色谱-质谱联用法测定木霉和植物内生真菌释放的挥发性有机物。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-01 Epub Date: 2025-04-30 DOI: 10.1007/s44211-025-00783-z

Ikuo Ueta, Suguru Masuda, Ryota Kataoka

{"title":"Determination of volatile organic compounds released by Trichoderma species and plant endophytic fungi using a needle-type extraction device and gas chromatography-mass spectrometry.","authors":"Ikuo Ueta, Suguru Masuda, Ryota Kataoka","doi":"10.1007/s44211-025-00783-z","DOIUrl":"10.1007/s44211-025-00783-z","url":null,"abstract":"This study proposes a method for the extraction of volatile organic compounds (VOCs) generated by Trichoderma species and plant endophytic fungi. In this method, generated VOCs are extracted using a needle-type extraction device and analyzed using gas chromatography-mass spectrometry. To extract VOCs generated by a single cultured fungi species, each fungi species was cultivated in a sealed 100 mL polypropylene bottle. Before cultivation, two silicone septa were attached to the bottle and cap. After the preparation of the culture media in the bottle, the bottle was autoclaved and the fungi were inoculated. The bottle was then sealed with a cap, and the air in the bottle was replaced with clean air. The surfaces of the extraction needle and a gas supply needle were sterilized with ethanol and inserted into the bottle via the two silicone septa. A gas sampling bag filled with pure air was connected to the gas supply needle, and clean air was continuously supplied to the bottle as the purge gas during the gas sampling. As the extraction needle, a double-bed-type adsorbent, Carbopack-X and a carbon molecular sieve, was used 3-Methyl butanol and 2-methyl butanol were detected for 41 species, and 2-pentylfran and 6-pentyl-2-pyrone were detected for 2 species among the 46 considered Trichoderma species. Monoterpenes and sesquiterpenes were detected for a single plant endophytic fungus species. The limit of detection of standard 3-methyl butanol and 2-methyl butanol in the proposed method was 0.5 ng mL-1. The performance of the proposed method was compared with that of the commercial MonoTrap method.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":"1097-1101"},"PeriodicalIF":1.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143952775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Solid-phase chromogenic method combining molecularly imprinted polymer and Simon reaction for discriminating between methamphetamine and structural analogs. 结合分子印迹聚合物和Simon反应的固相显色方法鉴别甲基苯丙胺和结构类似物。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-01 Epub Date: 2025-05-06 DOI: 10.1007/s44211-025-00782-0

Koichi Saito, Musashi Abe, Rie Ito, Hiroshi Akiyama

{"title":"Solid-phase chromogenic method combining molecularly imprinted polymer and Simon reaction for discriminating between methamphetamine and structural analogs.","authors":"Koichi Saito, Musashi Abe, Rie Ito, Hiroshi Akiyama","doi":"10.1007/s44211-025-00782-0","DOIUrl":"10.1007/s44211-025-00782-0","url":null,"abstract":"A systematic analytical method for discriminating methamphetamine (MA) from its structural analogs was developed by combining a solid-phase chromogenic method with the use of a molecularly imprinted polymer (MIP) and Simon reaction. L-proline (Pro), L-hydroxyproline (HYP), N-methylbenzylamine (NMe-BA), and N-isopropylbenzylamine (NIP-BA) were selected as false positives, while tert-butoxycarbonyl derivatized MA (t-Boc-MA) was selected as a false-negative substance. MA and the structural analogs were loaded into SupelMIP™ SPE-Amphetamines cartridges and Simon's reagent was added to the cartridge, then the coloration of the solid-phase gel was observed from outside the cartridge. After elution with a basic solution, Simon's reagent was added to the eluate (first-step eluate), and a change in color tone was observed. The MIP was then heated under acidic conditions, and the analytes were eluted (second-step eluate) with water, basified at pH 10, and the Simon reaction was repeated. Pro and HYP could be discriminated from MA by the color tone of the MIP solid-phase gel, whereas NMe-BA and NIP-BA could be discriminated from MA by the color tone of the first-step eluate. In addition, the color tone of the second-step eluate confirmed the presence of t-Boc-MA.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":"1089-1095"},"PeriodicalIF":1.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143959590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Highly sensitive electrochemical sensing of ascorbic acid (vitamin C) using Pd-doped MnO₂ supported on carbon quantum dots (Pd-MnO₂@CQD) in water and fruit juices. 在水和果汁中使用碳量子点（Pd-MnO2@CQD）负载pd掺杂MnO2对抗坏血酸（维生素C）的高灵敏度电化学传感。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-01 Epub Date: 2025-05-08 DOI: 10.1007/s44211-025-00787-9

Deepak Kumar, Daraksha Bano, Subhash Chandra, Bharat Kumar, Vivek Kumar, Pradeep Kumar Yadav, Syed Hadi Hasan

引用次数: 0

Advancement of microchip electrophoresis coupled with capacitively coupled contactless conductivity detection-from design to application (2018-2024). 微芯片电泳耦合电容耦合非接触电导率检测的进展-从设计到应用（2018-2024）。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-01 Epub Date: 2025-04-25 DOI: 10.1007/s44211-025-00771-3

Mingpeng Yang, Chaofan Wang, Jun Cai, Xiaochen Lai, Mingyi Cao, Xingqiang Zhao

{"title":"Advancement of microchip electrophoresis coupled with capacitively coupled contactless conductivity detection-from design to application (2018-2024).","authors":"Mingpeng Yang, Chaofan Wang, Jun Cai, Xiaochen Lai, Mingyi Cao, Xingqiang Zhao","doi":"10.1007/s44211-025-00771-3","DOIUrl":"10.1007/s44211-025-00771-3","url":null,"abstract":"Over the past three decades, microchip electrophoresis coupled with capacitively coupled contactless conductivity detection (ME-C4D) has garnered considerable interest due to its various merits, including minimal sample consumption, compact structure, immediate detection, and high analytical precision. Continuous technological innovation and improvement have significantly advanced ME-C4D in structural design, fabrication processes, and experimental methodologies. As a result, the application of this technology has expanded into a wider range of electrochemical analysis fields, including disease diagnosis, food safety assessment, environmental pollutant detection, and soil nutrient analysis. This review meticulously examines the forefront of ME-C4D over the last five years. It methodically categorizes and scrutinizes advancements from various dimensions, including newly emerged ME microchips, C4D electrodes, experimental protocols, and pioneering applications. Moreover, this paper critically summarizes these developments, identifying the prevailing limitations and challenges within ME-C4D. Ultimately, it projects potential future trajectories for innovation in the field of ME-C4D, suggesting pathways to overcome existing hurdles and hinting at the untapped possibilities that lie ahead.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":"903-921"},"PeriodicalIF":1.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143960292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Cobalt oxide modified screen-printed carbon electrode for electrochemical detection of high blood pressure treating drug: reserpine. 氧化钴修饰网印碳电极电化学检测高血压治疗药物利血平。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-01 Epub Date: 2025-05-06 DOI: 10.1007/s44211-025-00781-1

Chenxi Wu, Shengzhou Qiu, Sima Akter, Shaoli Hong, Huihong Liu, Sakil Mahmud

引用次数: 0

Development of a frontal analysis capillary electrophoresis coupled with time-of-flight mass spectrometry for determining the equilibrium dissociation constant between cyclophilin A and cyclosporin A. 毛细管电泳-飞行时间质谱联用测定亲环素a和环孢素a平衡解离常数的研究进展。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-01 Epub Date: 2025-05-19 DOI: 10.1007/s44211-025-00790-0

Jia Tang, Fan Shui, Li Deng, Yujie Zhang, Qibing Mei, Min Wang, Jing Zeng

{"title":"Development of a frontal analysis capillary electrophoresis coupled with time-of-flight mass spectrometry for determining the equilibrium dissociation constant between cyclophilin A and cyclosporin A.","authors":"Jia Tang, Fan Shui, Li Deng, Yujie Zhang, Qibing Mei, Min Wang, Jing Zeng","doi":"10.1007/s44211-025-00790-0","DOIUrl":"10.1007/s44211-025-00790-0","url":null,"abstract":"Exploring the interactions between ligands and proteins in vitro and in vivo is of irreplaceable significance for disease prevention, diagnosis, therapeutic development, and drug discovery. Herein, we have developed a novel method for determining the equilibrium dissociation constant (Kd) using frontal analysis capillary electrophoresis coupled with time-of-flight mass spectrometry (FACE-TOF-MS). This method enables the rapid determination of the Kd value for the interaction between cyclophilin A and cyclosporin A. Furthermore, the reliability of this method was validated by comparing it with bio-layer interferometry (BLI). The Kd values determined by FACE-TOF-MS and BLI were 3.32 μM and 0.60 μM, respectively, which fall within an acceptable range when considering previous reports using various methods. This study introduces a novel approach for analyzing molecular interactions, offering potential specificity for simultaneously determining the Kd values of multiple ligands in complex samples, particularly in the areas of biomarker discovery, high-throughput lead compound screening, and therapeutic target validation.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":"1061-1072"},"PeriodicalIF":1.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144101323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Breath biomarkers for esophageal cancer: identification, quantification, and diagnostic modeling. 食管癌的呼吸生物标志物：鉴定、量化和诊断模型。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-07-01 Epub Date: 2025-04-15 DOI: 10.1007/s44211-025-00769-x

Yuke Ren, Fei Wang, Ziyi Zhu, Raojun Luo, Guojun Lv, Haibin Cui

{"title":"Breath biomarkers for esophageal cancer: identification, quantification, and diagnostic modeling.","authors":"Yuke Ren, Fei Wang, Ziyi Zhu, Raojun Luo, Guojun Lv, Haibin Cui","doi":"10.1007/s44211-025-00769-x","DOIUrl":"10.1007/s44211-025-00769-x","url":null,"abstract":"Esophageal cancer is a major global health issue with a high mortality rate. Early diagnosis is crucial for improving patient outcomes, but traditional diagnostic methods are often invasive and costly. This study explores the potential of exhaled volatile organic compounds (VOCs) as a non-invasive diagnostic tool for esophageal cancer. Using gas chromatography-mass spectrometry (GC-MS), we analyzed the breath samples of 80 esophageal cancer patients and 60 healthy controls, identifying and quantifying over 100 VOCs. The results revealed significant differences in the concentrations of VOCs such as acetone, ethanol, and isoprene between the two groups. A multi-parameter regression diagnostic model based on a neural network algorithm achieved an accuracy of 90.3% in distinguishing esophageal cancer patients from healthy individuals. Further optimization incorporating physiological factors, including smoking, drinking, and dietary habits, improved the model's accuracy to 92.4%, with a specificity of 93.1%, representing a significant improvement over previous studies. These results suggest that VOCs analysis in exhaled breath holds great promise as a non-invasive, cost-effective, and accurate method for early detection of esophageal cancer.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":"965-976"},"PeriodicalIF":1.8,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143971487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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