keyword
https://read.qxmd.com/read/38533623/enzymatic-synthesis-of-furan-based-copolymers-material-characterization-and-potential-for-biomedical-applications
#21
JOURNAL ARTICLE
Martyna Sokołowska, Moein Zarei, Mirosława El Fray
BACKGROUND: Today's growing demand for advanced and sustainable polyester materials is driven by an increasing awareness of the environmental impact of traditional materials, emphasizing the need for eco-friendly alternatives. Sustainability has become central in materials development, including the biomedical area, where biobased and environmentally friendly solutions are a rapidly growing field. OBJECTIVES: This research aims to comprehensively evaluate a new enzymatically catalyzed furan-based copolymer, poly(decamethylene furanoate)-co-(dilinoleic furanoate) (PDF-DLF), with a 70-30 wt% hard-to-soft segment ratio...
March 27, 2024: Polimery W Medycynie
https://read.qxmd.com/read/38533376/the-application-of-small-intestinal-submucosa-in-tissue-regeneration
#22
REVIEW
Yifan Zhao, Hongyi Peng, Lingxiang Sun, Jiahui Tong, Chenying Cui, Ziyang Bai, Jingyu Yan, Danlei Qin, Yingyu Liu, Jue Wang, Xiuping Wu, Bing Li
The distinctive three-dimensional architecture, biological functionality, minimal immunogenicity, and inherent biodegradability of small intestinal submucosa extracellular matrix materials have attracted considerable interest and found wide-ranging applications in the domain of tissue regeneration engineering. This article presents a comprehensive examination of the structure and role of small intestinal submucosa, delving into diverse preparation techniques and classifications. Additionally, it proposes approaches for evaluating and modifying SIS scaffolds...
June 2024: Materials today. Bio
https://read.qxmd.com/read/38533082/waste-natural-fibers-for-polymer-toughening-and-biodegradability-of-epoxy-based-polymer-composite-through-toughness-and-thermal-analysis
#23
JOURNAL ARTICLE
Mohammad Salman Haque, M A Islam
Polymeric materials are being increasingly used to replace many metallic components due to their beneficial properties such as higher strength-to-weight ratio and corrosion resistance. However, the widespread use of polymers poses a risk to the environment as they are not biodegradable. The addition of the waste jute fiber and sawdust fiber as reinforcement to the epoxy resin improved its toughness and induced the biodegradability of the polymer. To examine the effect of the jute fiber and sawdust fiber on biodegradability, the composites were then kept in the drainage system for one year, and the impact energy and fracture morphology of the as-cast and weathered samples were examined using a drop ball impact test and a Charpy impact test...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38532766/comparison-of-time-zero-primary-stability-between-a-biodegradable-magnesium-bone-staple-and-metal-bone-staples-for-knee-ligament-fixation-a-biomechanical-study-in-a-porcine-model
#24
JOURNAL ARTICLE
Adrian Deichsel, Johannes Glasbrenner, Michael J Raschke, Matthias Klimek, Christian Peez, Thorben Briese, Elmar Herbst, Christoph Kittl
BACKGROUND: Bone staples have been shown previously to be a viable modality for cortical tendon graft fixation in ligament knee surgery. However, soft tissue reactions have been reported, making implant removal necessary. Magnesium alloys are a promising material for biodegradable orthopaedic implants, with mechanical properties closely resembling those of human bone. PURPOSE: To compare the primary stability of a biodegradable bone staple prototype made from magnesium to bone staples made from metal in the cortical fixation of tendon grafts during knee surgery...
March 2024: Orthopaedic Journal of Sports Medicine
https://read.qxmd.com/read/38531891/biodegradable-poly-ethylene-glycol-glycerol-itaconate-sebacate-copolyester-elastomer-with-significantly-reinforced-mechanical-properties-by-in-situ-construction-of-bacterial-cellulose-interpenetrating-network
#25
JOURNAL ARTICLE
Lisheng Tang, Yuanyuan Jin, Xiaoyan He, Ran Huang
To address the concern that biodegradable elastomers are environmental-friendly but usually associated with poor properties for practical utilization, we report a star-crosslinked poly(ethylene glycol-glycerol-itaconate-sebacate) (PEGIS) elastomer synthesized by esterification, polycondensation and UV curing, and reinforced by bacterial cellulose (BC). The interpenetrating network of primary BC backbone and vulcanized elastomer is achieved by the "in-situ secondary network construction" strategy. With the well dispersion of BC without agglomeration, the mechanical properties of PEGIS are significantly enhanced in tensile strength, Young's modulus and elongation at break...
March 26, 2024: Scientific Reports
https://read.qxmd.com/read/38531850/treeline-displacement-may-affect-lake-dissolved-organic-matter-processing-at-high-latitudes-and-altitudes
#26
JOURNAL ARTICLE
Núria Catalán, Carina Rofner, Charles Verpoorter, María Teresa Pérez, Thorsten Dittmar, Lars Tranvik, Ruben Sommaruga, Hannes Peter
Climate change induced shifts in treeline position, both towards higher altitudes and latitudes induce changes in soil organic matter. Eventually, soil organic matter is transported to alpine and subarctic lakes with yet unknown consequences for dissolved organic matter (DOM) diversity and processing. Here, we experimentally investigate the consequences of treeline shifts by amending subarctic and temperate alpine lake water with soil-derived DOM from above and below the treeline. We use ultra-high resolution mass spectrometry (FT-ICR MS) to track molecular DOM diversity (i...
March 26, 2024: Nature Communications
https://read.qxmd.com/read/38531522/chitosan-thermogelation-and-cascade-mineralization-via-sequential-caco-3-incorporations-for-wound-care
#27
JOURNAL ARTICLE
Chengkun Liu, Menghan Li, Zhiyuan Liu, Zhuang Shi, Xiaoqiang Wang, Fang Huang
Physically crosslinked hydrogels have shown great potential as excellent and eco-friendly matrices for wound management. Herein, we demonstrate the development of a thermosensitive chitosan hydrogel system using CaCO3 as a gelling agent, followed by CaCO3 mineralization to fine-tune its properties. The chitosan hydrogel effectively gelled at 37 °C and above after an incubation period of at least 2 h, facilitated by the CaCO3 -mediated slow deprotonation of primary amine groups on chitosan polymers...
March 24, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38531457/study-of-sequential-abiotic-and-biotic-degradation-of-styrene-butadiene-rubber
#28
JOURNAL ARTICLE
Laurie Calarnou, Mounir Traïkia, Martin Leremboure, Sandrine Therias, Jean-Luc Gardette, Pierre-Olivier Bussière, Lucie Malosse, Séverin Dronet, Pascale Besse-Hoggan, Boris Eyheraguibel
Styrene butadiene rubber is one of the main constituents of tire tread. During tire life, the tread material undergoes different stresses that impact its structure and chemical composition. Wear particles are then released into the environment as weathered material. To understand their fate, it is important to start with a better characterization of abiotic and biotic degradation of the elastomer material. A multi-disciplinary approach was implemented to study the photo- and thermo- degradation of non-vulcanized SBR films containing 15 w% styrene as well as their potential biodegradation by Rhodoccocus ruber and Gordonia polyisoprenivorans bacterial strains...
March 24, 2024: Science of the Total Environment
https://read.qxmd.com/read/38531439/a-review-of-the-occurrence-and-microbial-transformation-of-per-and-polyfluoroalkyl-substances-pfas-in-aqueous-film-forming-foams-afffs-impacted-environments
#29
REVIEW
Peng-Fei Yan, Sheng Dong, Kurt D Pennell, Natalie L Cápiro
Aqueous film-forming foams (AFFFs) have been extensively used for extinguishing hydrocarbon-fuel fires at military sites, airports, and fire-training areas. Despite being a significant source of per- and polyfluoroalkyl substances (PFAS), our understanding of PFAS occurrence in AFFF formulations and AFFF-impacted environments is limited, as is the impact of microbial transformation on the environment fate of AFFF-derived PFAS. This literature review compiles PFAS concentrations in electrochemical fluorination (ECF)- and fluorotelomer (FT)-based AFFFs and provides an overview of PFAS occurrence in AFFF-impacted environments...
March 24, 2024: Science of the Total Environment
https://read.qxmd.com/read/38531380/acetylene-tunes-microbial-growth-during-aerobic-cometabolism-of-trichloroethene
#30
JOURNAL ARTICLE
Justin P Skinner, Skye Palar, Channing Allen, Alia Raderstorf, Presley Blake, Arantza Morán Reyes, Riley N Berg, Christopher Muse, Aide Robles, Nasser Hamdan, Min-Ying Chu, Anca G Delgado
Microbial aerobic cometabolism is a possible treatment approach for large, dilute trichloroethene (TCE) plumes at groundwater contaminated sites. Rapid microbial growth and bioclogging pose a persistent problem in bioremediation schemes. Bioclogging reduces soil porosity and permeability, which negatively affects substrate distribution and contaminant treatment efficacy while also increasing the operation and maintenance costs of bioremediation. In this study, we evaluated the ability of acetylene, an oxygenase enzyme-specific inhibitor, to decrease biomass production while maintaining aerobic TCE cometabolism capacity upon removal of acetylene...
March 26, 2024: Environmental Science & Technology
https://read.qxmd.com/read/38531257/antibacterial-and-self-healing-sepiolite-based-hybrid-hydrogel-for-hemostasis-and-wound-healing
#31
JOURNAL ARTICLE
Yizhi Jiang, Li Wang, Wangdan Qi, Peisheng Yin, Xiang Liao, Yuze Luo, Yanhuai Ding
The process of wound healing necessitates a specific environment, thus prompting extensive research into the utilization of hydrogels for this purpose. While numerous hydrogel structures have been investigated, the discovery of a self-healing hydrogel possessing favorable biocompatibility, exceptional mechanical properties, and effective hemostatic and antibacterial performance remains uncommon. In this work, a polyvinyl alcohol (PVA) hybrid hydrogel was meticulously designed through a simple reaction, wherein Cux O anchored sepiolite was incorporated into the hydrogel...
March 23, 2024: Biomater Adv
https://read.qxmd.com/read/38531133/biotransformation-characteristics-of-tetracycline-by-strain-serratia-marcescens-msm2304-and-its-mechanism-evaluation-based-on-products-analysis-and-genomics
#32
JOURNAL ARTICLE
Siyu Wang, Jie Han, Ziyi Ge, Xu Su, Yixuan Chen, Jun Meng
Microbial biotransformation is a recommended and reliable method in face of formidable tetracycline (TC) with broad-spectrum antibacterial activity. Herein, comprehensive characteristics of a newfound strain and its molecular mechanism in process of TC bioremediation were involved in this study. Specifically, Serratia marcescens MSM2304 isolated from pig manure sludge grew well in presence of TC and achieved optimal removal efficiency of 61% under conditions of initial TC concentration of 10 mg/L, pH of 7...
March 25, 2024: Journal of Environmental Management
https://read.qxmd.com/read/38531043/microrna-200c-release-from-gelatin-coated-3d-printed-pcl-scaffolds-enhances-bone-regeneration
#33
JOURNAL ARTICLE
Matthew T Remy, Chawin Upara, Qiong J Ding, Jacob M Miszuk, Hongli Sun, Liu Hong
The fabrication of clinically relevant synthetic bone grafts relies on combining multiple biodegradable biomaterials to create a structure that supports the regeneration of defects while delivering osteogenic biomolecules that enhance regeneration. MicroRNA-200c ( miR-200c ) functions as a potent osteoinductive biomolecule to enhance osteogenic differentiation and bone formation; however, synthetic tissue-engineered bone grafts that sustain the delivery of miR-200c for bone regeneration have not yet been evaluated...
March 26, 2024: ACS Biomaterials Science & Engineering
https://read.qxmd.com/read/38530548/progress-in-polystyrene-biodegradation-by-insect-gut-microbiota
#34
REVIEW
Luhui Xu, Zelin Li, Liuwei Wang, Zihang Xu, Shulin Zhang, Qinghua Zhang
Polystyrene (PS) is frequently used in the plastics industry. However, its structural stability and difficulty to break down lead to an abundance of plastic waste in the environment, resulting in micro-nano plastics (MNPs). As MNPs are severe hazards to both human and environmental health, it is crucial to develop innovative treatment technologies to degrade plastic waste. The biodegradation of plastics by insect gut microorganisms has gained attention as it is environmentally friendly, efficient, and safe...
March 26, 2024: World Journal of Microbiology & Biotechnology
https://read.qxmd.com/read/38530489/phenol-biodegradation-using-bio-filter-tower-packed-column-with-immobilized-bacterial-consortium-a-batch-test-study
#35
JOURNAL ARTICLE
Preeti Sachan, Athar Hussain, Sangeeta Madan, Utkarsh Singh, Manjeeta Priyadarshi
The effluents from pulp and paper manufacturing industries contain high concentrations of phenol, which when discharged directly into surface water streams, increases the biological oxygen demand (BOD) and chemical oxygen demand (COD). In this study, two dominant bacteria SP-4 and SP-8 were isolated from the effluent emanating with a pulp and paper industry. The selected phenol-degrading isolates were identified as Staphylococcus sp. and Staphylococcus sciuri respectively by using nucleotide sequence alignment and phylogenetic analysis of 16 S rRNA regions of the genome...
March 26, 2024: Biodegradation
https://read.qxmd.com/read/38530488/isolation-identification-and-transcriptome-analysis-of-triadimefon-degrading-strain-enterobacter-hormaechei-ty18
#36
JOURNAL ARTICLE
Yan Wang, Qi Guan, Wenhui Jiao, Jiangbo Li, Rui Zhao, Xiqian Zhang, Weixin Fan, Chunwei Wang
Triadimefon, a type of triazole systemic fungicide, has been extensively used to control various fungal diseases. However, triadimefon could lead to severe environmental pollution, and even threatens human health. To eliminate triadimefon residues, a triadimefon-degrading bacterial strain TY18 was isolated from a long-term polluted site and was identified as Enterobacter hormaechei. Strain TY18 could grow well in a carbon salt medium with triadimefon as the sole nitrogen source, and could efficiently degrade triadimefon...
March 26, 2024: Biodegradation
https://read.qxmd.com/read/38530479/biodeterioration-of-polyethylene-by-bacillus-cereus-and-rhodococcus-equi-isolated-from-soil
#37
JOURNAL ARTICLE
Xinbei Liu, Xusheng Dong, Dandan Wang, Zhihong Xie
Polyethylene (PE), a non-biodegradable plastic, is widely used in agriculture as a mulch material, which causes serious plastic pollution when it is discarded. Recent studies have described the biodeterioration of PE by bacteria, but it is difficult for a single bacterial species to effectively degrade PE plastic. We isolated two strains with PE-degrading ability, Bacillus cereus (E1) and Rhodococcus equi (E3), from the soil attached to plastic waste on the south side of Mount Tai, China, using a medium with PE plastic as the only carbon source...
March 26, 2024: International Microbiology: the Official Journal of the Spanish Society for Microbiology
https://read.qxmd.com/read/38530065/biodegradable-strong-and-hydrophobic-regenerated-cellulose-films-enriched-with-esterified-lignin-nanoparticles
#38
JOURNAL ARTICLE
Rui Tian, Chao Wang, Weikun Jiang, Srinivas Janaswamy, Guihua Yang, Xingxiang Ji, Gaojin Lyu
The scientific community is pursuing significant efforts worldwide to develop environmentally viable film materials from biomass, particularly transparent, high-performance regenerated cellulose (RC) films, to replace traditional plastics. However, the inferior mechanical performance and hydrophilic nature of RC films are generally not suitable for use as a substitute for plastics in practical applications. Herein, lignin homogenization is used to synthesize high-performance composite films. The esterified lignin nanoparticles (ELNPs) with dispersible and binding advantages are prepared through esterification and nanometrization...
March 26, 2024: Small
https://read.qxmd.com/read/38529812/protein-integrated-hydrogen-bonded-organic-frameworks-chemistry-and-biomedical-applications
#39
JOURNAL ARTICLE
Lijuan Li, Tianyu Ma, Ming Wang
Hydrogen-bonded organic frameworks (HOFs) are porous nanomaterials that offer exceptional biocompatibility and versatility for integrating proteins for biomedical applications. This minireview concisely discusses recent advancements in the chemistry and functionality of protein-HOF interfaces. It particularly focuses on strategic methodologies, such as the careful selection of building blocks and the genetic engineering of proteins, to facilitate protein-HOF interactions. We examine the role of enzyme encapsulation within HOFs, highlighting its capability to preserve enzyme function, a crucial aspect for applications in biosensing and disease diagnosis...
March 26, 2024: Angewandte Chemie
https://read.qxmd.com/read/38529805/tannic-acid-modified-decellularized-tendon-scaffold-with-antioxidant-and-anti-inflammatory-activities-for-tendon-regeneration
#40
JOURNAL ARTICLE
Lei-Lei Zhao, Jia-Jiao Luo, Jing Cui, Xuan Li, Ruo-Nan Hu, Xin-Yue Xie, Yan-Jing Zhang, Wei Ding, Liang-Ju Ning, Jing-Cong Luo, Ting-Wu Qin
Tendon regeneration is greatly influenced by the oxidant and the inflammatory microenvironment. Persistent inflammation during the tendon repair can cause matrix degradation, tendon adhesion, and excessive accumulation of reactive oxygen species (ROS), while excessive ROS affect extracellular matrix remodeling and tendon integration. Herein, we used tannic acid (TA) to modify a decellularized tendon slice (DTS) to fabricate a functional scaffold (DTS-TA) with antioxidant and anti-inflammatory properties for tendon repair...
March 26, 2024: ACS Applied Materials & Interfaces
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