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Hydrolysis of myofibrillar proteins by protease AprA secreted from Pseudomonas fragi: Preference for degrading Ala-linked peptide bonds.
Food Chem
March 2025
State Key Laboratory of Meat Quality Control and Cultured Meat Development, Nanjing Agricultural University, Nanjing 210095, PR China. Electronic address:
Extracellular proteases of bacteria have attracted attention in recent years. Alkaline protease AprA secreted from Pseudomonas fragi has been shown to cause spoilage in chilled meat and to degrade myofibrillar proteins (MPs), but the spoilage mechanism was unknown. AprA possessed a high affinity for substrate proteins (K = 1.
View Article and Find Full Text PDFA comparison of bulk inorganic constituents and trace pollutant concentration in leachates by landfill type.
Waste Manag Res
March 2025
Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL, USA.
Landfill leachate characteristics vary depending on the type of waste facilities accept, such as municipal solid waste (MSW), construction and demolition debris (CDD) and MSW incineration (MSWI) ash. Optimizing disposal and treatment practices requires a thorough understanding of the behaviour of leachates from different classifications of refuse. This study provides a critical analysis of variation in leachate quality among over 80 sites based on landfill category: MSW, bulky debris, MSWI ash and MSW-MSWI ash co-disposal.
View Article and Find Full Text PDFModulating the electronic structure of NiFe layered double hydroxide via anion engineering for enhanced oxygen evolution.
J Colloid Interface Sci
March 2025
College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121 Zhejiang, PR China. Electronic address:
Alkaline water electrolysis is emerging as a promising technology for large-scale hydrogen production. However, NiFe layered double hydroxide (NiFe LDH), one of the leading-edge oxygen evolution reaction (OER) electrocatalysts in alkaline water electrolysis, still faces challenges in effectively modulating highly active species to enhance its advanced performance, which is crucial for promoting industrial development. Herein, we report a facile anion engineering strategy to construct a novel NiFe LDH as an efficient anode electrocatalyst.
View Article and Find Full Text PDFBoosting Alkaline Hydrogen Evolution by Creating Atomic-Scale Pair Cocatalytic Sites in Single-Phase Single-Atom-Ruthenium-Incorporated Cobalt Oxide.
ACS Nano
March 2025
Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia.
Compared with acidic environments, promoting the water dissociation process is crucial for speeding up hydrogen evolution reaction (HER) kinetics in alkaline electrolyte. Although the construction of heterostructured electrocatalysts by hybridizing noble metals with metal (hydr)oxides has been reported as a feasible approach to achieve high performance, the high cost, complicated fabrication process, and unsatisfactory mass activity limit their large-scale applications. Herein, we report a single-phase HER electrocatalyst composed of single-atom ruthenium (Ru) incorporated into a cobalt oxide spine structure (denoted as Ru SA/CoO), which possesses exceptional HER performance in alkaline media via unusual atomic-scale Ru-Co pair sites.
View Article and Find Full Text PDFEngineering TM-N@CNSH-Based Covalent-Organic Frameworks for Enhanced Water-Splitting and Oxygen Reduction Reactions: A Constant Potential and Feature Coevaluation Approach.
Langmuir
March 2025
School of Materials Science and Engineering, North Minzu University, Yinchuan 750021, People's Republic of China.
The development of highly active metal-based single-atom catalysts (SACs) is crucial for energy conversion and storage, offering optimized atom utilization and high catalytic activity, with bifunctional SACs for hydrogen evolution (HER) and oxygen evolution/reduction (OER/ORR) reactions providing greater efficiency and cost-effectiveness than monofunctional catalysts, making them scientifically and economically valuable. By integrating density functional theory and machine learning methods, we systematically evaluated the potential of TM-N@CNSH monolayers as efficient HER/OER/ORR catalysts, revealing that 27 TM atoms remain stable on N@CNSH with a TM-N coordination environment. Rh-N@CNSH outperforms Pt in HER, while Rh-N@CNSH drives both HER and OER, while Ni-N@CNSH catalyzes OER and ORR, making them bifunctional catalysts.
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