Article
Agriculture, Multidisciplinary
Honghai Chen, Zenan Ding, Tao Dai, Jianzhong Lin, Dunming Xu, Feng Xia, Jianghua Feng, Guiping Shen
Summary: In this study, LF/HF-NMR technique was used to detect the components of Panax notoginseng contaminated with Caulis clematidis armandii, and pattern recognition was applied to discriminate the authenticity of P. notoginseng. The results showed that LF-NMR parameters changed linearly with the increase of adulteration ratio, and the authentic P. notoginseng powder could be classified with 100% accuracy when the adulteration ratio was greater than 30%.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Agriculture, Multidisciplinary
Chang-liang Yao, Jing Wang, Zhen-wei Li, Hua Qu, Hui-qin Pan, Jia-yuan Li, Wen-long Wei, Jian-qing Zhang, Qi-rui Bi, De-an Guo
Summary: This study identified a group of new malonyl ginsenosides found exclusively in Panax notoginseng leaves through various analytical techniques, and discovered new compounds that can be used as quality markers for fraud detection. Additionally, a novel detection method was developed to identify adulterated notoginseng products.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Agriculture, Multidisciplinary
Leandro Levate Macedo, Cintia da Silva Araujo, Wallaf Costa Vimercati, Paulo Ricardo Gherardi Hein, Carlos Jose Pimenta, Sergio Henriques Saraiva
Summary: This study used NIR technology combined with PLS regression to quickly estimate the chemical properties of green coffee, showing different predictive capabilities. The best model was obtained for predicting grain moisture, while the worst performance was observed for the soluble solids model.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Food Science & Technology
Yinghui Chai, Yue Yu, Hui Zhu, Zhanming Li, Hao Dong, Hongshun Yang
Summary: This article introduces a method based on NIRS and chemometrics for identifying the adulteration of common buckwheat flour in Tartary buckwheat flour. The results of the study show that this method has good predictive performance and applicability.
CURRENT RESEARCH IN FOOD SCIENCE
(2023)
Article
Chemistry, Analytical
Xi-Hui Bian, Rong-Ling Zhang, Jing Wang, Peng Liu, Li-Gang Lin, Xiao-Yao Tan
Summary: This study investigates a rapid quantitative analysis method for adulterated Panax notoginseng (PN) samples. The feasibility of UV-Vis diffuse reflectance spectroscopy combined with chemometrics is explored for the identification of PN and its adulterants. The results show that this method has good predictive performance and can serve as an economic alternative.
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
(2022)
Article
Automation & Control Systems
Lakshmi Alagappan, Jia En Chu, Joanna Huixin Chua, Jia Wen Ding, Ronghui Xiao, Zhe Yu, Kun Pan, Untzizu Elejalde, Kevin Junliang Lim, Limsoon Wong
Summary: In this study, a new classification and correction technique called CSCAC is proposed, which can simultaneously correct batch effects, perform multi-class classification, and detect new classes. The effectiveness of the method is demonstrated through classification experiments on different types of oils.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2023)
Review
Chemistry, Applied
Adriano de Araujo Gomes, Silvana M. Azcarate, Paulo Henrique Gonsalves Dias Diniz, David Douglas de Sousa Fernandes, Germano Veras
Summary: Food analysis is crucial for ensuring the quality and integrity of food products, and selecting effective variables is key to improving the accuracy and robustness of models. By discarding non-informative and redundant signals, more accurate and interpretable models can be established.
Article
Chemistry, Applied
Xiangru Meng, Chunling Yin, Libo Yuan, Yan Zhang, Ying Ju, Kehui Xin, Wenbo Chen, Kaidi Lv, Leqian Hu
Summary: A comparative study was conducted on FTIR, Vis-NIR, and EEMs combined with chemometrics for detecting olive oil adulteration with soybean oil. PCA/multi-way PCA analysis showed the feasibility of these spectral techniques. The accuracy of FTIR and Vis-NIR based on PLS-DA for adulterated olive oil was 100%, while EEMs had an accuracy of only 73%. FTIR and Vis-NIR are superior for detection due to their convenience in operation and modeling.
Article
Biochemical Research Methods
Bin Li, Hai Yin, A-kun Yang, Ai-guo Ouyang
Summary: The combined use of terahertz time-domain spectroscopy (THz-TDS) and chemometric technology was successfully applied to detect adulteration in Panax notoginseng powder. The study developed qualitative models using the UVE-BPNN and SPA-BPNN methods, achieving a classification accuracy of 95%. Quantitative analysis models using the LS-SVM and PLS algorithms showed good results, with a correlation coefficient (R-P) of 0.90 and 0.93 for zedoary turmeric powder and wheat flour, respectively, and an R-P of 0.94 for rice noodles. The study demonstrates the potential of THz-TDS and chemometric technology for rapid, accurate, and nondestructive detection of adulteration in Panax notoginseng powder.
JOURNAL OF SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Jie Mei, Yang Huang, Jacques Crommen, Dingsheng Zha, Zhengjin Jiang, Tingting Zhang
Summary: In this study, an efficient SFC-MS method combined with CPR was developed for the quality evaluation of P. notoginseng. Optimal SFC-MS conditions were obtained using DoE, and several CPR methods were employed to establish a classification model. PLS-DA was proven to be a satisfactory method for accurate discrimination of selected samples. The developed method using SFC-MS and PLS-DA showed great potential for the quality assessment of P. notoginseng.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2022)
Article
Nutrition & Dietetics
Mengyuan Gao, Xiunan Cao, Shujie Wei, Xuhua Huang, Huizi Ouyang, Yanxu Chang, Rui Shi, Jun He
Summary: This study used a non-targeted metabolomics approach to investigate the chemical profiles of different parts of Panax notoginseng. The results revealed that roots and stems mainly consist of protopanaxatriol-type saponins, while protopanaxadiol-type saponins are primarily present in the leaves. Furthermore, geographical origin significantly affects the quality of stems and leaves of P. notoginseng, and 52 constituents were identified as potential markers for distinguishing between different parts of the plant.
FRONTIERS IN NUTRITION
(2022)
Article
Food Science & Technology
Sijun Wu, Long Wang, Guoming Zhou, Chao Liu, Zhongrui Ji, Zheng Li, Wenlong Li
Summary: A method combining a hand-held near-infrared spectrometer with ensemble preprocessing was proposed for the rapid determination of capsaicin content and adulteration detection of pepper powder. Selective ensemble preprocessing achieved the best prediction results for capsaicin in the peppers. The potential of GWO-SVM for detecting adulterated pepper powder was also investigated, showing high classification accuracy for Yanjiao peppers.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Chemistry, Medicinal
Zhao-Xi Liu, Shu-Hua Tang, Ying Wang, Jin Tan, Zi-Tao Jiang
Summary: Front-face synchronous fluorescence spectroscopy (FFSFS) can be used for fast and non-invasive authentication of Panax notoginseng powder (PP) adulterated with other substances. Prediction models based on unfolded total synchronous fluorescence spectra and partial least square (PLS) regression were constructed and validated. The models successfully predicted the contents of multiple adulterants in PP with high accuracy.
Article
Chemistry, Multidisciplinary
Cheng Guo, Jin Zhang, Wensheng Cai, Xueguang Shao
Summary: This study investigates the transferability of NIR models between different fruits using two case studies. A model for predicting strawberry soluble solids content (SSC) was established with acceptable accuracy, but directly applying this model to grape and apple spectra led to degraded performance. Spectral preprocessing improved predictions, but bias remained. Calibration transfer using SS-PFCE and PLS correction was found to effectively improve the prediction of grape and apple spectra. Therefore, calibration transfer may be a feasible way to improve the transferability of NIR models for multiple fruits.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Applied
Songguang Zhao, Selorm Yao-Say Solomon Adade, Zhen Wang, Jizhong Wu, Tianhui Jiao, Huanhuan Li, Quansheng Chen
Summary: In this study, near-infrared (NIR) spectroscopy combined with partial least squares (PLS), backpropagation neural network (BPANN), and their combination (PLS-BPANN) were used to monitor the total sugar content of kombucha. A total of 16 mathematical models were constructed and evaluated. The results showed that the PLS-BPANN model outperformed others, with a determination coefficient (R2p) of 0.9437 and a root mean square error of prediction (RMSEP) of 0.8600 g/L, indicating good verification results. The findings suggest that NIR coupled with PLS-BPANN can be a nondestructive and online technique for monitoring total sugar changes.
Article
Engineering, Chemical
Feng Song, Shujuan Zhuang, Xiaoyao Tan, Shaomin Liu
Article
Engineering, Chemical
Jian Gao, Yutai Lun, Ning Han, Xiaoyao Tan, Chunyan Fan, Shaomin Liu
SEPARATION AND PURIFICATION TECHNOLOGY
(2019)
Article
Engineering, Chemical
Mingming Wang, Yalin Zhou, Xiaoyao Tan, Jun Gao, Shaomin Liu
JOURNAL OF MEMBRANE SCIENCE
(2019)
Article
Engineering, Chemical
Mingming Wang, Xiaoyao Tan, Julius Motuzas, Jiaquan Li, Shaomin Liu
Summary: The study produced metallic nickel hollow fiber membranes with a dense skin layer and porous nickel substrate for hydrogen production from methane steam reforming. The membranes showed high efficiency and stability, making them a promising option for cost-effective hydrogen production at high temperatures.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Mingming Wang, Zhigang Wang, Xiaoyao Tan, Shaomin Liu
Summary: Highly-asymmetric metallic Ni hollow fiber membranes were fabricated using a modified phase inversion and sintering technique. By adjusting spinning conditions and sintering parameters, a hollow fiber with optimized microstructure and significantly increased hydrogen flux was achieved, demonstrating great potential for application in gas separation processes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Di Wang, Heyao Wu, Yanyang Xu, Tianjia Chen, Yongfeng Zhang, Zhifei Hu, Zhigang Wang, Xiaoyao Tan, Shaomin Liu
Summary: In this study, nickel hollow fiber membranes were successfully fabricated and used as membrane reactors for toluene steam reforming and H2 separation. The results showed that the membrane reactor achieved stable and efficient performance in toluene conversion and H2 production under suitable conditions.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Hongyong Zhao, Ting Song, Xiaoli Ding, Ruyi Cai, Xiaoyao Tan, Yuzhong Zhang
Summary: Membrane technology is widely used for O2/N2 separation in industries, and cobalt-based compounds are known for their affinity for O2, which improves O2/N2 selectivity. A study successfully developed PIM-1 mixed matrix membranes containing cobalt-based ionic liquid, resulting in higher O2/N2 selectivity and lower O2 permeability. The application of a magnetic field further enhanced the O2/N2 selectivity of the membranes. These findings highlight the potential of these membranes for air separation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Gonghe Tong, Yanbin Li, Zhigang Wang, Xiaoyao Tan
Summary: Micro-tubular protonic ceramic fuel cells (MT-PCFCs) have advantages in terms of intermediate operating temperature, large volumetric power density, and low sealing requirements. This study successfully fabricates high-performance MT-PCFCs using a one-step fabrication method, achieving a peak power density of 601.2 mW cm-2 for a single cell and a power output of 2.5 W for a cell stack.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Jie Wang, Baolei Shao, Claudia Li, Jian Song, Bo Meng, Xiuxia Meng, Naitao Yang, Sibudjing Kawi, Jaka Sunarso, Xiaoyao Tan, Shaomin Liu
Summary: In this study, a ceramic hydrogen permeable membrane reactor was developed for the simultaneous reaction and separation process, allowing the production of synthesis gas and pure hydrogen while reducing greenhouse gas emissions.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Xihui Bian, Zizhen Zhao, Jianwen Liu, Peng Liu, Huibing Shi, Xiaoyao Tan
Summary: A novel method combining the discretized butterfly optimization algorithm-partial least squares (BOA-PLS) and near-infrared (NIR) spectroscopy is proposed for the rapid determination of blood cholesterol concentration. The results show that the improved V-shaped (I-V) function is the best transfer function for discretization. Preprocessing and variable selection methods based on BOA can improve the prediction performance of PLS. The MSC-MMS can further enhance the predictive accuracy of I-V-BOA-PLS.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Multidisciplinary
Yun Jin, Bo Gao, Chao Bian, Xiuxia Meng, Bo Meng, Shao Ing Wong, Naitao Yang, Jaka Sunarso, Xiaoyao Tan, Shaomin Liu
Summary: A novel composite membrane has been developed for efficient hydrogen separation at lower temperatures, with good thermal stability and oxidative resistance.
Article
Chemistry, Analytical
Kaiyi Wang, Xihui Bian, Xiaoyao Tan, Haitao Wang, Yankun Li
Summary: A new ensemble modeling strategy named MC-LASSO-PLS is proposed for NIR spectral multivariate calibration, which ensures model diversity through generating training subsets by sampling from both samples and variables. The final prediction is produced by simple average of the predictions from N sub-models, showing superior prediction ability compared to other models in NIR spectral analysis.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Multidisciplinary
Hussein Rasool Abid, Zana Hassan Rada, Yuan Li, Hussein A. Mohammed, Yuan Wang, Shaobin Wang, Hamidreza Arandiyan, Xiaoyao Tan, Shaomin Liu
Article
Chemistry, Multidisciplinary
Mingming Wang, Xiaoyao Tan, Xiaobin Wang, Bo Meng, Shaomin Liu
CHEMICAL COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Peng Liu, Yafei Duan, Xihui Bian, Xiaoyao Tan
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)