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Food and Humanity 2024年 2卷

作者： Gupta, Achala Sanwal, Nikita Sharma, Nitya Sahu, Jatindra K. P, Hariprasad Kheto, Ankan Food Customization and Research Lab Centre for Rural Development and Technology Indian Institute of Technology Delhi Hauz Khas New Delhi 110 016 India Environmental Biotechnology Lab Centre for Rural Development and Technology Indian Institute of Technology Delhi New Delhi India Department of Food Process Engineering National Institute of Technology Odisha Rourkela 769008 India

Madhuca longifolia (mahua) flowers are abundantly rich in sugar, therefore, there exist a significant potential of utilizing mahua flowers for the production of alcoholic beverages. Hence, the present study was planned to investigate the dynamic changes in physicochemical, volatiles, and non-volatile compounds during fermentation of Madhuca longifolia flower juice (MFJ) using Saccharomyces cerevisiae at different time points. The highest ethanol concentration (74.56 ± 0.13 g/L) was observed at moderate agitation speed (150 rpm for 7 days). The sugar kinetic behavior revealed that the differential saccharification process followed a pseudo-second-order (PSO) model. The volatile metabolite profiling indicated the development of 12 alcohols, 4 terpenes, 6 esters, 4 acids, and 2 ethers. On the other hand, non-volatile compounds mainly comprised amino acids, flavonoids, polyphenols, organic acids, vitamins, and esters. Among 61 non-volatile compounds, the highest concentration of vitamins and phenolics was observed at 48 h. Interestingly, 11 new compounds developed, and 5 compounds remarkably reduced at 168 h. The phytochemical compounds were increased (TPC: 18.57–77.59 mg GAE/g d.m, TFC: 11.91–40.223 mg QE/g d.m and CTC: 3.2–6.66 mL Catechin/L). Consequently, DPPH and FRAP assay exhibited higher radical scavenging activity of IC₅₀: 57.57–12.9 µg/mL and 49.06–146.55 µM Fe(II)/g d.m for fermented MFJ samples. The sensory analysis revealed that fermented MFJ at 48 h had the highest overall acceptability with most acceptable aroma, color intensity and aftertaste. The results indicated that Saccharomyces cerevisiae improved the quality of mahua juice. The study will add valuable information for the large-scale production of commercial alcoholic beverages from mahua flowers. © 2024 Elsevier B.V.

关键词： Bioactive compounds Functional beverage Mahua flower Metabolomics Sugar kinetics Wine yeast

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Standalone polymer ‘litmus-paper’-like sensor for specific hydrogen detection: Integrating naked-eye and fluorescence techniques

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International Journal of Hydrogen Energy 2025年 137卷 397-405页

作者： Luzzatto, Yonatan Alatawna, Amr Sror, Gal Mendelson, Orit Pevzner, Svetlana Regev, Oren Department of Chemical Engineering Ben-Gurion University of the Negev Beer-Sheva8410500 Israel Department of Chemical Engineering and Blechner Center for Industrial Catalysis and Process Development Ben-Gurion University of the Negev Beer-Sheva8410500 Israel Department of Chemistry Nuclear Research Centre-Negev Beer-Sheva84190 Israel Ilse Katz Institute for Nanoscale Science and Technology Ben-Gurion University of the Negev Beer-Sheva8410500 Israel

Hydrogen is a promising renewable fuel with broad applications, but its flammability and tendency to leak through metals create safety challenges, necessitating reliable, standalone, and affordable sensing systems. Current hydrogen sensors are often costly, suffer from cross-sensitivity to gases, and are typically not standalone. Our sensing approach is based on the hydrogenation of the fluorophore 1,4-bisphenylethnylbenzene (PEB). This approach encompasses two levels of visual sensing: rapid detection via surface color change and quantitative "litmus paper"-like analysis and cross-section observation, which provides a hydrogen exposure history and other parameters such as hydrogen partial pressure and exposure time. The sensor detection limit is 1 mbar ( © 2025 Hydrogen Energy Publications LLC

关键词： Hydrogenolysis

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Recent advances of covalent organic frameworks-based photocatalysts:Principles,designs,and applications

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Chinese Journal of Catalysis 2025年第3期70卷 142-206页

作者： Hongjun Dong Chunhong Qu Chunmei Li Bo Hu Xin Li Guijie Liang Jizhou Jiang Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province Institute of Green Chemistry and Chemical TechnologySchool of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013JiangsuChina Baicheng Normal University Baicheng 137000JilinChina Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and Utilization of Ministry of Agriculture and Rural AffairsKey Laboratory for Biobased Materials and Energy of Ministry of EducationCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina School of Environmental Ecology and Biological Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205HubeiChina Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053HubeiChina

Covalent organic frameworks(COFs)semiconductor materials have garnered significant attention in solar to chemical energy conversion owing to their unique properties,including structural tunability,pre-design capability,large surface area,abundant pore structures,high crystallinity,excellent chemical stability,suitable energy-band structure,fast charge carrier transfer and so *** intrinsic features endow COFs with the remarkable candidates for various photocatalytic applications including photocatalytic H_(2) generation from water reduction,CO_(2) reduction,degradation of organic pollutants,N_(2) fixation,H_(2)O_(2) evolution,and even organic ***,this review comprehensively summarizes the recent advancements in COF-based materials for the above photocatalytic reactions,including the historic overview of the COF in the photocatalysis field,the fundamentals and design philosophy of COF-based photocatalysts,the advances of synthesis strategies,the structural characteristics and diversities,the practical applications in various photocatalytic fields as well as the challenges and future development direction in terms of COFs material and application *** sincerely hope this review can offer symbolic guidelines for future development COF semiconductor materials in this promising field.

关键词： Covalent organic framework Photocatalysis Structural feature Energy conversion Environmental purification

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A PV Fed Grid Connected SEPIC-ZETA Converter Along with High Frequency Isolation Fly Back Converter for Multiport EV Applications

A PV Fed Grid Connected SEPIC-ZETA Converter Along with High...

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Computer, Communication and Control (IC4), International Conference on

作者： Suresh Vendoti T. Amar Kiran T. J. Thomas Thangam R. Siva Nagini K. S. Kavin Blessy A Rahiman Department of Electrical and Electronics Engineering Godavari Institute of Engineering and Technology (A) Affiliated to JNTUK Kakinada India Department of Electrical and Electronics Engineering Godavari Institute of Engineering and Technology (A) Rajahmundry A.P India Department of Process Engineering International Maritime College Oman National University of Science and Technology Sohar Sultanate of Oman Department of Electrical and Electronics Engineering Senior Research and Development Engineer AB Technologies Nagercoil Department of Electrical and Electronics Engineering Government College of Engineering Tirunelveli Tamilnadu India Department of Electrical and Electronics Engineering Karunya Institute of Technology and Sciences Coimbatore India

Due to the increased pollution rate and poor fuel economy, there is high acceleration in the growth of Electric vehicles (EVs). In general, grid based power supply is connected to the EVs and in order to provide uninterruptible power supply, renewable energy sources (RES) based power is introduced in Electric Vehicles. Renewable energy sources (RES) have many benefits compared to conventional sources such as reduction of overload at local grids and also extends the grid flexibility. However, the PV suffers from voltage fluctuations due to frequent changes in irradiation of Sun. Therefore, for boosting the yield of the PV system, a novel DC TO DC SEPIC-ZETA converter is proposed in this paper. The PV organisation’s maximum operating point is monitored using the Perturb & Observe (P&O) MPPT algorithm. The output of DC to DC converter is given to a high frequency isolated Fly back converter, in which the DC supply is transformed into high frequency AC supply. Further, the AC output is sub-divided into five portions and through individual rectifiers; the AC is converted into DC supply and fed to multiple battery ports. Next, a Recurrent Neural Network (RNN) is used to keep the batteries’ State of Charge (SOC) stable. The use of high frequency fly back converter reduces the number of sources used and also assists in supplying power to multiple batteries of EVs. Also, the MATLAB/Simulink stage is recycled to implement the proposed task in order to investigate performance.

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Efficient removal of tetracycline and norfloxacin contaminants in wastewater onto N-dopped Cu/Al@Biochar as low-cost sorbent: kinetic and adsorption mechanism investigation

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Environmental Science and Pollution research 2025年 1-20页

作者： Tchuifon Tchuifon, Donald Raoul Fotsop, Cyrille Ghislain Kenda, Georges Teikam Feudjio, Frank Dorinel Solefack Mafo, Sandrale Grace Mokue Dongmo, Dave Sanchez Mouafo Anagho, Solomon Gabche Hosseini-Bandegharaei, Ahmad Laboratory of Chemical Engineering and Industrial Bio-Processes Department of Process Engineering National Higher Polytechnic School of Douala University of Douala PO Box 2701 Douala Cameroon Faculty of Process and Systems Engineering Institute of Chemistry Universität Platz 2 Magdeburg39106 Germany Research Unit of Noxious Chemistry and Environmental Engineering Department of Chemistry Faculty of Science University of Dschang PO Box 67 Dschang Cameroon Laboratory of Applied Physical and Analytical Chemistry Department of Inorganic Chemistry Faculty of Science University of Yaoundé1 PO Box 812 Yaoundé Cameroon Faculty of Chemistry Semnan University Semnan Iran Department of Sustainable Engineering Saveetha School of Engineering SIMATS Tamil Nadu Chennai602105 India Centre of Research Impact and Outcome Chitkara University Punjab Rajpura140417 India University Centre for Research & Development Chandigarh University Punjab Mohali140413 India

In the present study, an adsorbent material (N-dopped Cu/Al@Biochar) was synthesized by integrating N, Cu, and Al atoms into the structure of a biochar. This material was characterized by several physicochemical methods, then applied to the elimination of tetracycline (TC) and norfloxacin (NC). The results obtained showed that the modification method used, although significantly altering the mesoporous structure of the original biochar, generates several functional groups on the surface of the material, giving it excellent adsorption properties. These properties were evaluated by studying the influence of various experimental parameters such as the pH of the solution, the mass of doped biochar, and the contact time on the amount of antibiotic adsorbed. Adsorption studies revealed maximum amounts of TC and NC adsorbed of 65 and 96 mg/g at pH = 8 and 6 respectively with 50 mg of adsorbent for an equilibrium time of 90 min for TC and 60 min for NC at a concentration of 15 mg/L for both antibiotics. This adsorption capacity led to the removal percentages of up to 90 and 82% for TC and NC, respectively. After five cycles of use, a decrease in adsorption efficiency of 9% for TC and 11% for NC was observed, demonstrating the impressive stability of the synthesized material. Kinetic studies revealed that the Elovich and pseudo nth order models are the most appropriate to describe the adsorption kinetics of TC and NC respectively. In addition, the two- and three-parameter isotherm models used in this study revealed multilayer adsorption processes, based on both π-π, n-π, van der Waals bond formation and hydrogen bonds. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

关键词： Semiconductor doping

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Extreme Halophilic Archaea: Halobacterium Salinarum Carotenoids Characterization and Antioxidant Properties

SSRN

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SSRN 2024年

作者： Ben Hamad Bouhamed, Sana Chaari, Marwa Baati, Houda Zouari, Sami Ammar, Emna Research Group of Agri-Food Processing Engineering Laboratory of Applied Fluids Mechanics Process Engineering and Environment National Engineering School of Sfax University of Sfax Tunisia Engineering Preparatory Studies Institute of Sfax University of Sfax Laboratory of Environment Sciences and Sustainable Development B.P. Sfax1173 - 3038 Tunisia High Institute of Biotechnology of Sfax University of Sfax Laboratory of Medicinal and Environmental Chemistry Sfax Tunisia National Engineering School of Sfax University of Sfax Tunisia

Important marine microorganisms are resources of renewable energy that may face global population growth and needs. Their biomass metabolites application, such as carotenoids and their derivatives, may solve some agro-food health problems. In this study, a novel carotenoid-producing halophilic Archaea Halobacterium salinarum was isolated from Sfax solar saltern (Tunisia). The isolate genome was analyzed and the carotenoid pigments were identified using high performance liquid chromatography-tandem mass spectrometry. The C-50 carotenoids, bacterioruberin and its derivatives, were found to be the predominant pigments produced by this Halobacterium and the carotenoids production was found to be of 21.51 mg/mL. Moreover, the results showed that the carotenoids extract presented a very high antioxidant activities based on four assays. The present results suggested that carotenoids extracted from halophilic Archaea are attractive sources of natural antioxidants and promising biotechnological candidates for future innovative applications in agro-food, cosmetic and health fields. © 2024, The Authors. All rights reserved.

关键词： Carotenoids

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Isotherm Model Discrimination for Multimodal Chromatography Using Mechanistic Models Derived from High-Throughput Batch Isotherm Data: (Ii) Multimodal Anion-Exchange

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SSRN 2023年

作者： Altern, Scott Howard Welsh, John P. Kocot, Andrew J. Lyall, Jessica Yang Burgess, Sean Kumar, Vijesh Williams, Chris Lenhoff, Abraham M. Cramer, Steven M. Department of Chemical and Biological Engineering Rensselaer Polytechnic Institute TroyNY United States Biologics Process Research and Development Merck & Co. Inc. RahwayNJ United States Purification Development Genentech South San FranciscoCA United States Department of Chemical and Biomolecular Engineering University of Delaware NewarkDE United States

While column modeling has been long studied for single-mode chromatographic systems, its application for multimodal systems has been limited. Although a range of isotherm formalisms have been applied to multimodal chromatography, no direct comparisons of their efficacies have been performed. This results in a lack of clarity with respect to which isotherm models should be employed and is a clear obstacle in modeling of multimodal chromatography. In this paper, a set of isotherm formalisms with ranging complexities, accounting for electrostatic interactions, hydrophobic interactions, and thermodynamic activities, were examined for their efficacy in fitting batch isotherm data as well as predicting column elution behavior. Batch isotherm data was generated for an array of salt conditions for Capto Adhere, a multimodal anion-exchange resin, using a mAb. Subsets of the batch data were then created, corresponding to the nonlinear region of the isotherm and the full range of protein loadings. Each set of batch data was fit twenty times with each isotherm formalism, which resulted in a distribution of isotherm parameter values. The models were next investigated for their accuracy in predicting changes in peak shape and protein recovery losses in linear salt gradients with respect to gradient slope. A scoring metric was then employed to evaluate the fitting and predictive efficacies for each isotherm formalism. In addition, the Akaike information criteria was used to aid in model selection by accounting for their predictive abilities and relative complexities. Sensitivity analyses were subsequently conducted to determine the contributions of individual isotherm parameters to the outputs of column predictions and batch data fits. A key finding of this investigation was the importance of the salt-protein activity coefficient parameter which dramatically affected the batch isotherm fits and column elution profiles. Parametric studies then demonstrated that this parameter singl

关键词： Monoclonal antibodies

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Microcrack Detection and Localization in Laminated Packaging Structures Using Superlets and Lamb Wave Static Components

Microcrack Detection and Localization in Laminated Packaging...

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Electronics Packaging Technology Conference (EPTC)

作者： Xu Long Yaxi Li Jishuo Wang Liang Zhao Weifeng Yuan Tang Gu Science and Engineering Southwest University of Science and Technology Mianyang China Research & Development Institute of Northwestern Poly technical University in Shenzhen Shenzhen China School of Mechanics Civil Engineering and Architecture Northwestern Polytechnical University Xi'an China Key Laboratory of Testing Technology for Manufacturing Process Ministry of Education School of Manufacturing Institute of Polytechnic Science and Aeronautics (IPSA) Ivry-Sur-Seine France

ISBN: (数字)9798331522001

ISBN: (纸本)9798331522018

In electronic packaging, early micro crack detection is crucial for maintaining the long-term reliability of devices. This study specifically addresses the detection of microcracks in laminated die-attachment regions, considering the impact of crack orientation on detection efficacy. This study introduces a two-step approach for detecting and localizing microcracks in thin laminated packaging structures. The first step involves the application of Superlets technology to transform time-frequency data into high-resolution images that reveal fault characteristics. The second step utilizes the static component of Lamb waves for accurate crack localization. A theoretical model is developed to analyze the interaction between microcracks and Lamb waves, shedding light on the critical role of the static component in localization. Finite element simulations, combined with advanced signal processing techniques, validate the effectiveness of this approach. Additionally, ultrasonic experiments on typical packaging structures, confirm the practical applicability of Superlets for detecting damage in practice. The integration of Superlets technology with Lamb wave analysis, as demonstrated through our finite element model, not only shows significant potential for improving microcrack detection and localization but also serves as a case study for the application of this technology in practical scenarios.

关键词： Location awareness Time-frequency analysis Analytical models Accuracy Transforms Acoustics Stability analysis Finite element analysis Reliability Electronics packaging

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Improving stability of MXenes

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Nano research 2022年第7期15卷 6551-6567页

作者： Jizhou Jiang Saishuai Bai Jing Zou Song Liu Jyh-Ping Hsu Neng Li Guoyin Zhu Zechao Zhuang Qi Kang Yizhou Zhang School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Institute of Chemical Biology and Nanomedicine(ICBN) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyHunan UniversityChangsha 410082China Department of Chemical Engineering “National Taiwan University”Taipei 10617TaiwanChina State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Institute of Advanced Materials and Flexible Electronics(IAMFE) School of Chemistry and Materials ScienceNanjing University of Information Science&TechnologyNanjing 210044China Department of Chemistry Tsinghua UniversityBeijing 100084China Department of Polymer Science and Engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgeingShanghai Jiao Tong UniversityShanghai 200240China

Due to their superior hydrophilicity and conductivity,ultra-high volumetric capacitance,and rich surface-chemistry properties,MXenes exhibit unique and excellent performance in catalysis,energy storage,electromagnetic shielding,and life *** they are derived from ceramics(MAX phase)through etching,one of the challenges in MXenes preparation is the inevitable exposure of metal atoms on their surface and embedding of anions and *** the as-obtained MXenes are always in a thermodynamically metastable state,they tend to react with trace oxygen or oxygen-containing groups to form metal oxides or degrade,leading to sharply declined activity and impaired ***,improving the stability of MXenesbased materials is of practical significance in relevant ***,there lacks a comprehensive review in the literature on relevant *** help promote the wide applications of MXenes,we review from the following aspects:(i)insights into the factors affecting the stability of MXenes-based materials,including oxidation of MXenes flakes,stability of MXenes colloidal solutions,and swelling and degradation of MXenes thin-film,(ii)strategies for enhancing the stability of MXenes-based materials by optimizing MAX phase synthesis and modifying the MXenes preparation,and(iii)techniques for further increasing the stability of freshly prepared MXenes-based materials via controlling the storage conditions,and forming shielding on the surface and/or edge of MXenes ***,some outlooks are proposed on the future developments and challenges of highly active and stable *** aim to provide guidance for the design,preparation,and applications of MXenes-based materials with excellent stability and activity.

关键词： MXenes stability oxidation swelling and degradation shielding strategies

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Insights of Cu2o/Zn5(Oh)8cl2 Photocathode Architecture for an Efficient Photoelectrochemical Co2 Reduction to Multi-Carbon Products

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SSRN 2025年

作者： Nawaz, Nbila Perveen, Saira Bienkowski, Krzysztof Wrobel, Piotr Pisarek, Marcin Prabhakaran, Shanker Szwacki, Nevill Gonzalez Pitchaimuthu, Sudhagar Solarska, Renata Ramalingam, Karthick Laboratory of Molecular Research for Solar Energy Innovations Center of New Tech-Nologies University of Warsaw Poland Division of Condensed Matter Structure Department of Physics University of Warsaw Poland Research and Development Division KGisl Institute of Technology Tamil Nadu Coimbatore India Department of Physics University of Warsaw Poland Laboratory of Surface Analysisi Institute of Physical Chemistry Polish Academy of Sciences Poland School of Engineering And Physical Sciences Institute of Mechanical Process and Energy Engineering Heriot-Watt University United Kingdom

Photoelectrochemical (PEC) CO₂ reduction is a critical and sustainable method for significantly reducing greenhouse gas emissions while producing renewable fuels and chemicals. Copper(I) oxide (Cu₂O) is a significant photocathode material for CO₂ reduction;however, poor stability and low catalytic efficiency hinder its practical implementation. In this groundbreaking study, we introduce and rigorously investigate a novel photocathode architecture comprising Cu₂O and Zn₅(OH)₈Cl₂ (ZHC) that enhances the efficiency of PEC CO₂ reduction. The integration of ZHC effectively functions as a selectivity layer for CO* adsorption, driving the transformation into multi-carbon products, including methanol, ethanol, propylene, and butadiene. This transformation occurs at a compelling potential of 0.4 V vs. RHE, achieving a current density of approximately -1.2 mA/cm². Furthermore, first-principles density functional theory (DFT) calculations are employed to investigate CO₂ reduction on Cu₂O(100), ZHC, and the Cu₂O/ZHC (CZHC) heterostructure. This heterojunction architecture demonstrates enhanced CO₂ adsorption due to orbital delocalization, which significantly improves the adsorption energy and promotes the formation of C₂ products. Our research decisively contributes valuable insights into the design of highly efficient copper-based photoelectrodes, ensuring improved selectivity in photoelectrochemical CO₂ reduction and ultimately producing high-value carbon products. © 2025, The Authors. All rights reserved.

关键词： Photocathodes

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