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Biosensors 2023年第10期13卷 929-929页

作者： Chen, Hsiu-Mei Tsai, Yi-Hsuan Hsu, Chien-Yi Wang, Yong-Yi Hsieh, Cheng-En Chen, Jin-Hua Chang, Yu-Sheng Lin, Ching-Yu Department of Chemical Engineering National Taiwan University of Science and Technology Taipei10607 Taiwan Department of Family Medicine Wan Fang Hospital Taipei Medical University Taipei11696 Taiwan Division of Cardiology and Cardiovascular Research Center Department of Internal Medicine Taipei Medical University Hospital Taipei11031 Taiwan Division of Cardiology Department of Internal Medicine School of Medicine College of Medicine Taipei Medical University Taipei11031 Taiwan Taipei Heart Institute Taipei Medical University Taipei11031 Taiwan Graduate Institute of Data Science College of Management Taipei Medical University Taipei11031 Taiwan Office of Data Science Taipei Medical University Taipei11031 Taiwan Division of Allergy Immunology and Rheumatology Department of Internal Medicine Shuang Ho Hospital Taipei Medical University New Taipei City23561 Taiwan Division of Allergy Immunology and Rheumatology Department of Internal Medicine School of Medicine College of Medicine Taipei Medical University Taipei11031 Taiwan School of Medical Laboratory Science and Biotechnology College of Medical Science and Technology Taipei Medical University Taipei11031 Taiwan Ph.D. Program in Medical Biotechnology College of Medical Science and Technology Taipei Medical University Taipei11031 Taiwan

An effective early diagnosis is important for rheumatoid arthritis (RA) management. This study reveals a novel RA detection method using bacteriorhodopsin as a ph.toelectric transducer, a light-driven proton pump in purple membranes (PMs). It was devised by covalently conjugating a PM monolayer-coated electrode with a citrullinated-inter-alph.-trypsin inhibitor heavy chain 3 (ITIH3)542–556 peptide that recognizes the serum RA-associated autoantibodies. The direct serum coating decreased the ph.tocurrents in the biosensor, with the reduction in the ph.tocurrent caused by coating with an RA-patient serum that is significantly larger than that with a healthy-control serum (38.1% vs. 20.2%). The difference in the reduction in the ph.tocurrent between those two serum groups widened after the serum-coated biosensor was further labeled with gold nanoparticle (AuNP)-conjugated anti-IgA (anti-IgA-AuNP) (53.6% vs. 30.6%). Both atomic force microscopic (AFM) and Raman analyses confirmed the sequential peptide, serum, and anti-IgA-AuNP coatings on the PM-coated substrates. The reductions in the ph.tocurrent measured in both the serum and anti-IgA-AuNPs coating steps correlated well with the results using commercial enzyme-linked immunosorbent assay kits (Spearman rho = 0.805 and 0.787, respectively), with both a sensitivity and specificity close to 100% in both steps. It was shown that an RA diagnosis can be performed in either a single- or two-step mode using the developed biosensor. © 2023 by the authors.

关键词： Peptides

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Highly efficient capture of E. coli using amidoximated polyacrylonitrile nanofiber membrane immobilized with reactive green 19 dye/polyhexamethylene biguanide: Antibacterial and cytotoxicity studies

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Separation and Purification technology 2024年 338卷

作者： Quang-Vinh Le Bing-Lan Liu Penjit Srinoph.kun Jeng-Ywan Shih Chi-Yun Wang Chen‑Yaw Chiu Shen-Long Tsai Kuei-Hsiang Chen Yu-Kaung Chang Department of Chemical Engineering National Taiwan University of Science and Technology Taipei City 10607 Taiwan Department of Applied Chemistry Chaoyang University of Technology Taichung 413310 Taiwan Department of Chemical Engineering Kasetsart University 50 Ngamwongwan Road Chatuchak Bangkok 10900 Thailand Department of Chemical Engineering Ming Chi University of Technology New Taipei City 243303 Taiwan International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan Bone and Joint Research Centre Chang Gung Memorial Hospital Taoyuan City 333423 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Zhongli Dist. Taoyuan City 320315 Taiwan

In this study, we synthesized an amidoximated polyacrylonitrile nanofiber membrane (P-Oxime). Subsequently, we grafted reactive green 19 (RG19) dye onto its surface, resulting in the formation of the P-Oxime-RG19 membrane. Further enhancement was achieved by ph.sically attaching poly(hexamethylene biguanide) hydrochloride (ph.B) to the P-Oxime-RG19 membrane, leading to the formation of the P-Oxime-RG19-ph.B membrane. Extensive characterization of the nanofiber membranes was conducted, focusing on crucial ph.sical and mechanical properties such as functional group content, morph.logy, and thermostability. The optimization of various modification conditions, including initial dye and ph.B concentrations, duration, temperature, and nitrile group conversion to oxime concentrations, played a pivotal role in achieving superior antibacterial performance in P-Oxime-RG19-ph.B nanofiber membranes. In-depth analyses involved the application of kinetic and equilibrium thermodynamic models to unravel the modification processes of RG19 dye and ph.B in the nanofiber membranes. Under the carefully tuned optimal modification conditions, the P-Oxime-RG19-ph.B nanofiber membrane exhibited remarkable antibacterial efficacy, achieving nearly 100% disinfection of E. coli . In addition to exploring its antimicrobial capabilities, we thoroughly examined the repeatability and biocompatibility of the nanofiber membranes. The results indicated not only the P-Oxime-RG19-ph.B nanofiber membrane was a highly promising antibacterial material but also highlighted its potential for diverse applications, particularly in food and textile fabrication, owing to its exceptional performance and suitability.

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Retraction notice to "Organic composts as A vehicle for the entry of microplastics into the environment: A comprehensive review" [Sci. Total Environ. 892 (2023) 164758]

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The science of the total environment 2024年 957卷 177731页

作者： Van-Re Le Minh-Ky Nguyen Hoang-Lam Nguyen Chitsan Lin Md Refat Jahan Rakib Van-Anh Thai Van-Giang Le Guilherme Malafaia Abubakr M Idris Ho Chi Minh City University of Food Industry (HUFI) 140 Le Trong Tan Street Tan Phu District Ho Chi Minh City 700000 Viet Nam. Faculty of Environment and Natural Resources Nong Lam University of Ho Chi Minh City Hamlet 6 Linh Trung Ward Thu Duc City Ho Chi Minh City 700000 Viet Nam Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung 81157 Taiwan. Department of Civil Engineering McGill University Montreal Canada. Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung 81157 Taiwan Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung 81157 Taiwan. Department of Fisheries and Marine Science Faculty of Science Noakhali Science and Technology University Noakhali 3814 Bangladesh. Institute of Aquatic Science and Technology National Kaohsiung University of Science and Technology Kaohsiung City 81157 Taiwan. Central Institute for Natural Resources and Environmental Studies Vietnam National University Hanoi 111000 Viet Nam. Post-Graduation Program in Ecology Conservation and Biodiversity Federal University of Uberlândia Uberlândia MG Brazil Post-Graduation Program in Biotechnology and Biodiversity Federal University of Goiás Goiânia GO Brazil Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal Institute Urutaí GO Brazil. Department of Chemistry College of Science King Khalid University 61431 Abha Saudi Arabia Research Center for Advanced Materials Science (RCAMS) King Khalid University Abha 61421 Saudi Arabia.

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Time synchronization between parietal–frontocentral connectivity with MRCP and gait in post-stroke bipedal tasks

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Journal of Neuroengineering and Rehabilitation 2024年第1期21卷 101页

作者： ph.ng, Chun-Ren Su, Kai-Hsiang Cheng, Yuan-Yang Chen, Chia-Hsin Ko, Li-Wei International Ph.D. Program in Interdisciplinary Neuroscience (UST) College of Biological Science and Technology National Yang Ming Chiao Tung University Hsinchu Taiwan Center for Intelligent Drug Systems and Smart Bio-devices (IDS2B) College of Biological Science and Technology National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Biological Science and Technology College of Biological Science and Technology National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Physical Medicine and Rehabilitation Taichung Veterans General Hospital Taichung Taiwan Department of Post-Baccalaureate Medicine College of Medicine National Chung Hsing University Taichung Taiwan School of Medicine National Yang Ming Chiao Tung University Taipei Taiwan Department of Physical Medicine and Rehabilitation Kaohsiung Medical University Hospital Kaohsiung Taiwan School of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Regenerative Medicine and Cell Therapy Research Center Kaohsiung Medical University Kaohsiung Taiwan Institute of Electrical and Control Engineering National Yang Ming Chiao Tung University Hsinchu Taiwan Department of Biomedical Science and Environment Biology Kaohsiung Medical University Kaohsiung Taiwan Drug Development and Value Creation Research Center Kaohsiung Medical University Kaohsiung Taiwan

Background: In post-stroke rehabilitation, functional connectivity (FC), motor-related cortical potential (MRCP), and gait activities are common measures related to recovery outcomes. However, the interrelationship between FC, MRCP, gait activities, and bipedal distinguishability have yet to be investigated. Methods: Ten participants were equipped with EEG devices and inertial measurement units (IMUs) while performing lower limb motor preparation (MP) and motor execution (ME) tasks. MRCP, FCs, and bipedal distinguishability were extracted from the EEG signals, while the change in knee degree during the ME ph.se was calculated from the gait data. FCs were analyzed with pairwise Pearson’s correlation, and the brain-wide FC was fed into support vector machine (SVM) for bipedal classification. Results: Parietal–frontocentral connectivity (PFCC) dysconnection and MRCP desynchronization were related to the MP and ME ph.ses, respectively. Hemiplegic limb movement exhibited higher PFCC strength than nonhemiplegic limb movement. Bipedal classification had a short-lived peak of 75.1% in the pre-movement ph.se. These results contribute to a better understanding of the neuroph.siological functions during motor tasks, with respect to localized MRCP and nonlocalized FC activities. The difference in PFCCs between both limbs could be a marker to understand the motor function of the brain of post-stroke patients. Conclusions: In this study, we discovered that PFCCs are temporally dependent on lower limb gait movement and MRCP. The PFCCs are also related to the lower limb motor performance of post-stroke patients. The detection of motor intentions allows the development of bipedal brain-controlled exoskeletons for lower limb active rehabilitation. © The Author(s) 2024.

关键词： Brain–computer interface Functional connectivity Motor execution Motor preparation Post-stroke

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Corrigendum to "development and functional evaluation of a hyaluronic acid coated nano-formulation with kaempferol as a novel intra-articular agent for knee osteoarthritis treatment"[ Biomed. ph.rmacother. 175(2024) 116717]

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Biomedicine & ph.rmacotherapy = Biomedecine & ph.rmacotherapie 2024年 177卷 116944页

作者： Ching-Yu Lee Yu-Chu Chang Kai-Chiang Yang Yung-Fang Lin Alexander T H Wu Ching-Li Tseng International Ph.D. Program in Cell Therapy and Regenerative Medicine College of Medicine Taipei Medical University Taipei 110301 Taiwan Department of Orthopedics Taipei Medical University Hospital Taipei 110301 Taiwan Department of Orthopaedics School of Medicine College of Medicine Taipei Medical University Taipei 110301 Taiwan Orthopedic Research Center Taipei Medical University Hospital Taipei 110301 Taiwan. Department of Biochemistry and Molecular Cell Biology School of Medicine College of Medicine Taipei Medical University Taipei 110301 Taiwan. School of Dental Technology College of Oral Medicine Taipei Medical University Taipei 110301 Taiwan. Graduate Institute of Biomedical Materials and Tissue Engineering College of Biomedical Engineering Taipei Medical University Taipei 110301 Taiwan International Ph.D. Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei 110301 Taiwan. The Ph.D. Program for Translational Medicine College of Medical Science and Technology Taipei Medical University Taipei 110301 Taiwan Clinical Research Center Taipei Medical University Hospital Taipei Medical University Taipei 110301 Taiwan. Electronic address: chaw1211@tmu.edu.tw. International Ph.D. Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei 110301 Taiwan. Electronic address: chingli@tmu.edu.tw.

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Ultrasensitive and selective electrochemical detection of hydroquinone using electropolymerized 7-amino ceph.losporanic acid modified GCE

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Surface and Coatings technology 2025年 512卷

作者： H. Sathya Pandiaraja Varatharajan M.A. Ashkar M. Chandhru Mani Govindasamy S. Kutti Rani N. Vasimalai Department of Chemistry B.S. Abdur Rahman Crescent Institute of Science and Technology Vandalur Chennai 600 048 India International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan Department of Physics B.S. Abdur Rahman Crescent Institute of Science and Technology Vandalur Chennai 600 048 India Centre for Applied Research Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences (SIMATS) Chennai 602105 Tamil Nadu India Research Center for Intelligent Medical Devices Ming Chi University of Technology New Taipei City 243303 Taiwan

Industrial wastewater pollution harms ecosystems and hinders sustainable development growth. Particularly, hydroquinone (HQ) has transitioned from a commercial chemical to an environmental hazard because of its extensive use in beauty products, ph.rmaceuticals, chemicals, and food industries. Therefore, developing electrochemical sensors for the detection of HQ is very important for environmental safety. Herein, the 7-ACA monomer was electropolymerized on the glassy carbon electrode (GCE) surface to examine the electrochemical oxidation of HQ utilizing CV (cyclic voltammetry) and dPV (differential pulse voltammetry) techniques. Scanning electron microscopy (SEM) characterization verified the deposition of the p-7-ACA on the glassy carbon electrode (GCE) surface. The designed p-7-ACA@GCE sensor exhibited better electrocatalytic properties. The acquired dPV observations for the p-7-ACA@GCE demonstrated excellent limit of detection (LOd) 8.86 nmol L −1 and broad linear range (0.33 μM to 955 μM) for the detection of HQ. The developed sensor exhibits excellent repeatability, reproducibility, selectivity and better cyclic stability. In addition, the fabricated p-7-ACA@GCE was used to determine the HQ in a different environmental water sample.

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Gene set correlation enrichment analysis for interpreting and annotating gene expression profiles

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Nucleic Acids Research 2024年第3期52卷 E17页

作者： Chang, Lan-Yun Lee, Meng-Zhan Wu, Yujia Lee, Wen-Kai Ma, Chia-Liang Chang, Jun-Mao Chen, Ciao-Wen Huang, Tzu-Chun Lee, Chia-Hwa Lee, Jih-Chin Tseng, Yu-Yao Lin, Chun-Yu Institute of Bioinformatics and Systems Biology National Yang Ming Chiao Tung University Hsinchu 300 Taiwan School of Medical Laboratory Science and Biotechnology College of Medical Science and Technology Taipei Medical University New Taipei City 235 Taiwan Center for Intelligent Drug Systems and Smart Bio-devices (IDS2B) National Yang Ming Chiao Tung University Hsinchu 300 Taiwan TMU Research Center of Cancer Translational Medicine Taipei Medical University Taipei 110 Taiwan Ph.D. Program in Medical Biotechnology College of Medical Science and Technology Taipei Medical University New Taipei City 235 Taiwan Department of Otolaryngology-Head and Neck Surgery Tri-Service General Hospital National Defense Medical Center Taipei 110 Taiwan Department of Food Science Nutrition and Nutraceutical Biotechnology Shih Chien University Taipei 104 Taiwan Department of Biological Science and Technology National Yang Ming Chiao Tung University Hsinchu 300 Taiwan Cancer and Immunology Research Center National Yang Ming Chiao Tung University Taipei 112 Taiwan Institute of Data Science and Engineering National Yang Ming Chiao Tung University Hsinchu 300 Taiwan School of Dentistry Kaohsiung Medical University Kaohsiung 807 Taiwan

Pathway analysis, including nontopology-based (non-TB) and topology-based (TB) methods, is widely used to interpret the biological ph.nomena underlying differences in expression data between two ph.notypes. By considering dependencies and interactions between genes, TB methods usually perform better than non-TB methods in identifying pathways that include closely relevant or directly causative genes for a given ph.notype. However, most TB methods may be limited by incomplete pathway data used as the reference network or by difficulties in selecting appropriate reference networks for different research topics. Here, we propose a gene set correlation enrichment analysis method, Gscore, based on an expression dataset-derived coexpression network to examine whether a differentially expressed gene (dEG) list (or each of its dEGs) is associated with a known gene set. Gscore is better able to identify target pathways in 89 human disease expression datasets than eight other state-of-the-art methods and offers insight into how disease-wide and pathway-wide associations reflect clinical outcomes. When applied to RNA-seq data from COVId-19-related cells and patient samples, Gscore provided a means for studying how dEGs are implicated in COVId-19-related pathways. In summary, Gscore offers a powerful analytical approach for annotating individual dEGs, dEG lists, and genome-wide expression profiles based on existing biological knowledge. © 2024 Oxford University Press. All rights reserved.

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CCL5 Protects Cortical Neuron Function by Regulating M2 Microglia Activation After Mild Traumatic Brain Injury

SSRN

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SSRN 2022年

作者： Tsai, Yih-Jeng Ho, Man-Hau Yen, Chia-Hung Wang, Jia-Yi Burnouf, Thierry Chen, Chia-Yen Wang, Yun Chiang, Yung-Hsiao Hoffer, Barry J. Chou, Szu-Yi Department of Otolaryngology Head and Neck Surgery Shin Kong Wu HoSu Memorial Hospital Taipei Taiwan School of Medicine Fu Jen Catholic University New Taipei City Taiwan Ph.D. Program in Medical Neuroscience College of Medical Science and Technology Taipei Medical University National Health Research Institute Taiwan Graduate Institute of Neural Regenerative Medicine College of Medical Science and Technology Taipei Medical University Taipei Taiwan Department of Biological Science and Technology National Pingtung University of Science and Technology Neipu Pingtung91201 Taiwan Graduate Institute of Medical Sciences College of Medicine Taipei Medical University Taipei11031 Taiwan Department of Neurosurgery Taipei Medical University Hospital Taipei11031 Taiwan Neuroscience Research Center Taipei Medical University Taipei11031 Taiwan International PhD Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei Taiwan Graduate Institute of Biomedical Materials and Tissue Engineering College of Biomedical Engineering Taipei Medical University Taipei Taiwan NeuroTMULille International Laboratory Taipei Medical University Taipei Taiwan International PhD Program in Cell Therapy and Regeneration Medicine College of Medicine Taipei Medical University Taipei Taiwan Brain and Consciousness Research Centre TMU Shuang Ho Hospital New Taipei City Taiwan Center for Neuropsychiatric Research National Health Research Institutes Zhunan Miaoli County Taiwan Department of Surgery School of Medicine College of Medicine Taipei Medical University 11031 Taiwan Department of Neurosurgery Case Western Reserve University School of Medicine ClevelandOH United States Scientist Emeritus National Institutes of Health United States International Master Program in Medical Neuroscience College of Medical Science and Technology Taipei Medical University Taipei Taiwan

Cytokines and chemokines play important roles in inflammation and repair following brain injury. M1 microglia are pro-inflammatory which produce cytokines and lead to neural injury;in contrast, M2 microglia are anti-inflammatory, release neurotroph.c factors, and promote neural repair processes. Chemokine CCL5, increased after TBI, shows a neuroprotective function by reducing oxidative stress. CCL5 may contribute to the balance between oxidative stress and immune responses after brain injury. Herein, we investigated the role of CCL5 in microglial polarization after mild traumatic brain injury, focusing on the cerebral cortex.C57BL/6 and CCL5 knockout (CCL5-KO) mice were given a mild traumatic brain injury (TBI) using weight-drop. Neurological parameters such as motor and sensory functions were analyzed by mNSS score, accelerating rotarod, beam walking, and adhesive removal tests. Oxidative stress and neuron damage were measured by NAdph.oxidase activity, hypoxyloprobe staining and FJC. Performance of motor and sensory functions in both WT and CCL5-KO mice were impaired after brain injury which recovered after 7 days-post-injury (dpi) in the WT group but only after 14 days in the CCL5-KO mouse group. RT-qPCR analysis revealed that pro-inflammation cytokines - IL-1β, TNF-α, and IL-6 were higher in CCL5-KO mice compared to WT mice at 4 and 14 dpi. In contrast, M2-like microglia markers - IL-10 and Agr-1 were increased in WT mouse cortical tissue at 4 dpi. Oxidative stress increased both M1 and M2- related cytokine expression in BV2 cells treated with H 2 O 2;CCL5 treatment increased M2- but suppressed M1- related cytokine gene activation. Intranasal delivery of CCL5 reduced neuronal oxidative stress, increased IL-10 expression and improved motor and sensory functions in CCL5-KO mice after brain *** summary, CCL5, which alters immune responses and protects neurons from TBI damage, has an important function in regulating M2-like microglial polarization during post-

关键词： Polarization

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Spatiotemporal variation and clustered routes of atmosph.ric speciated mercury transported from the East and West Channels of Taiwan Island to South China Sea

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Atmosph.ric Research 2025年 325卷

作者： Mei-Yun Xiao Wen-Hsi Cheng Yu-Lun Tseng Po-Hsuan Yen Chung-Shin Yuan Jia-Yi Zhao Ming-Shiou Jeng Institute of Environmental Engineering National Sun Yat-sen University Taiwan ROC Ph.D. Program in Maritime Science and Technology College of Maritime National Kaohsiung University of Science and Technology Kaohsiung City Taiwan ROC Net Zero Emissions and Resource Recycling Technology Research Center National Sun Yat-Sen University Kaohsiung Taiwan ROC Biodiversity Research Center Academia Sinica Nangang Taipei City Taiwan ROC Green Island Marine Research Station Biodiversity Research Center Academia Sinica Green Island Taitung County Taiwan ROC

This study investigated the spatiotemporal variation and long-range transport characteristics of atmosph.ric speciated mercury (ASM) along the West and East Channels surrounding Taiwan Island toward the South China Sea (SCS) in East Asia. Field sampling was conducted at three remote island sites, and potential sources of ASM were examined using backward trajectory clustering and regional fire maps. Seasonally, ASM concentrations followed the order: spring > winter > fall > summer, with higher ASM levels observed in the western waters of Taiwan Island than those in the eastern waters. Among the mercury species, gaseous elemental mercury (GEM) was predominant, and followed by particulate-bound mercury (PBM) and gaseous oxidized mercury (GOM), with total gaseous mercury (TGM = GEM+GOM) accounting for 92.1–98.4 % of ASM. Clustered trajectory analysis indicated that Asian Northeastern Monsoons (ANMs) may transport ASMs originating from continental sources in North and East Asia to the island sites via long-range transport. Slash-and-burn activities in the Indochina Peninsula and mainland China during spring and winter contributed to elevated ASM levels. The West Channel exhibited a pronounced “channel effect,” amplifying industrial emissions across the Taiwan Strait and resulting in higher ASM levels at the Penghu Islands. Conversely, the East Channel received diluted air masses through long-range transport from the Korean Peninsula and North China via Green Island and the Bashi Channel, leading to relatively lower ASM levels at the dongsha Island. Overall, this study highlights the importance of seasonal circulation patterns and regional combustion sources in shaping mercury distribution in the marine boundary layer of East Asia.

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Agar-altered foaming bacterial cellulose with carvacrol for active food packaging applications

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Food Packaging and Shelf Life 2024年 42卷

作者： Kusuma, Anita Chandra Chou, Yu-Chieh Hsieh, Chen-Che Santoso, Shella Permatasari Go, Alchris Woo Lin, Hong-Ting Victor Hsiao, I.-Lun Lin, Shin-Ping Master Program in Food Safety Taipei Medical University 250 Wu-Hsing Street Taipei 11031 Taiwan Ph.D. Program in Drug Discovery and Development Industry Taipei Medical University 250 Wu-Hsing Street Taipei 11031 Taiwan Institute of Biotechnology National Taiwan University 1 Roosevelt Rd. Section 4 Taipei 10617 Taiwan Department of Chemical Engineering Widya Mandala Surabaya Catholic University Kalijudan 37 Surabaya 60114 Indonesia Department of Chemical Engineering National Taiwan University of Science and Technology 43 Keelung Road Section 4 Taipei 10607 Taiwan Department of Food Science National Taiwan Ocean University No. 2 Pei-Ning Road Keelung 20224 Taiwan School of Food Safety Taipei Medical University 250 Wu-Hsing Street Taipei 11031 Taiwan TMU Research Center for Digestive Medicine Taipei Medical University 250 Wu-Hsing Street Taipei 11031 Taiwan Research Center of Biomedical Device Taipei Medical University 250 Wu-Hsing Street Taipei 11031 Taiwan

Bacterial cellulose (BC) is a biodegradable nanoscale film produced by microorganisms, which possesses great mechanical properties and biocompatibility. In this study, we produced foaming BC (FBC) utilizing foam medium with different concentrations of agar. In addition, carvacrol was loaded into the agar/FBC to establish active packaging material. Evaluation by characterization tests indicated that agar/FBC provided lower crystallinity (59.8%∼71.4%) and a high swelling ability (94.7%∼97.9%) compared to BC (92.2% and 96.1%). The 1.5% agar/FBC with carvacrol group exhibited the significantly highest antimicrobial properties against Escherichia coli and Staph.lococcus aureus. Moreover, release measurements showed that greater agar addition contributed to higher protein and carvacrol release extents out of the film. Finally, a sea bass packaging test indicated that carvacrol with 1.5% agar/FBC presented a higher antimicrobial ability against Shewanella putrefaciens, great inhibition of lipid oxidation (67.5%), and a slower spoilage degree (49.8%) which suggested that agar/FBC with carvacrol has potential for active food packaging. © 2024 Elsevier Ltd

关键词： Agar Bacterial cellulose Carvacrol Foaming bacterial cellulose Food packaging Sea bass

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