Journal of Leather Science and Engineering最新文献_第9页

Functional non-glutaraldehyde treated porcine pericardium for anti-coagulation, anti-calcification, and endothelial proliferation bioprosthetic heart valves 功能性非戊二醛处理的猪心包用于抗凝血、抗钙化和内皮细胞增殖生物人工心脏瓣膜

Journal of Leather Science and Engineering Pub Date : 2022-08-20 DOI: 10.1186/s42825-022-00098-z

Xiaotong Chen, Tao Yu, Qunshou Kong, Dajun Kuang, Hong Xu, Zhiyu Zhao, Li Yang, Gaocan Li, Haojun Fan, Yunbing Wang

{"title":"Functional non-glutaraldehyde treated porcine pericardium for anti-coagulation, anti-calcification, and endothelial proliferation bioprosthetic heart valves","authors":"Xiaotong Chen, Tao Yu, Qunshou Kong, Dajun Kuang, Hong Xu, Zhiyu Zhao, Li Yang, Gaocan Li, Haojun Fan, Yunbing Wang","doi":"10.1186/s42825-022-00098-z","DOIUrl":"10.1186/s42825-022-00098-z","url":null,"abstract":"<div><p>In the last decade, the number of transcatheter heart valve replacement for severe heart valve disease has increased exponentially. Although the bioprosthetic artificial heart valve (BHV) has similar fluid dynamics performance to the original heart valve compared with mechanical heart valve so that there is no need to take long-term anticoagulant drugs to prevent thromboembolism, transcatheter BHV replacement are still at risk for thrombosis during the first few months according to the clinical data. However, the use of antithrombotic drugs can also increase the risk of bleeding. Therefore, it is particularly important to improve the anticoagulant properties for the BHV itself. In this work, a kind of non-glutaraldehyde cross-linked BHV material with excellent antithrombotic ability has been prepared from carboxylated oxazolidine treated porcine pericardium (consisting of collagen, elastin and glycoprotein) with the further graft of the anticoagulant heparin sodium via hydrophilic modified chitosan. Along with the similar mechanical properties and collagen stability comparable to the glutaraldehyde cross-linked porcine pericardium (PP), these functional non-glutaraldehyde cross-linked PPs exhibit better biocompatibility, promoted endothelial proliferation and superior anti-calcification ability. More importantly, excellent anticoagulant activity can be observed in the hematological experiments in vivo and in vitro. In summary, these excellent performances make these functional non-glutaraldehyde cross-linked PPs great potentialities in the BHV applications.</p><h3>Graphical abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-022-00098-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76812321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

An exploration of enhancing thermal stability of leather by hydrophilicity regulation: effect of hydrophilicity of phenolic syntan 通过亲水性调节提高皮革热稳定性的探索:酚类化合物亲水性的影响

Journal of Leather Science and Engineering Pub Date : 2022-08-15 DOI: 10.1186/s42825-022-00096-1

Qingyong Sun, Yunhang Zeng, Yue Yu, Ya-nan Wang, Bi Shi

{"title":"An exploration of enhancing thermal stability of leather by hydrophilicity regulation: effect of hydrophilicity of phenolic syntan","authors":"Qingyong Sun, Yunhang Zeng, Yue Yu, Ya-nan Wang, Bi Shi","doi":"10.1186/s42825-022-00096-1","DOIUrl":"10.1186/s42825-022-00096-1","url":null,"abstract":"<div><p>Effect of retanning on the thermal stability of leather is eliciting increasing attention. However, the relationship between the hydrophilicity of retanning agents and the heat resistance of leather and the corresponding mechanism remain unclear. Herein, phenolic formaldehyde syntans (PFSs) were selected as models to explore the effect of the hydrophilicity of retanning agents on the thermal stability of retanned leather. The thermal stability of leather was closely correlated to the hydrophilic group content (sulfonation degree) of PFSs. As the sulfonation degree increased, the water absorption rate of PFSs and their retanned leathers decreased, whereas the thermal stability of leather increased. Molecular dynamics simulation results proved that the introduction of PFSs could reduce the binding ability of collagen molecules with water and thus decreased the water molecules around the PFS-treated collagen. These results may provide guidance for the tanners to select retanning agents reasonably to improve the thermal stability of leather.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-022-00096-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75197949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Technical and technological constraints facing Tanzania leather value chain: a snapshot of intervention measures 坦桑尼亚皮革价值链面临的技术和技术限制:干预措施的快照

Journal of Leather Science and Engineering Pub Date : 2022-08-10 DOI: 10.1186/s42825-022-00095-2

Cecilia Rolence China, Rahel Elibariki, Jamal Msami, Stephen Mwombela, Lugano Wilson

{"title":"Technical and technological constraints facing Tanzania leather value chain: a snapshot of intervention measures","authors":"Cecilia Rolence China, Rahel Elibariki, Jamal Msami, Stephen Mwombela, Lugano Wilson","doi":"10.1186/s42825-022-00095-2","DOIUrl":"10.1186/s42825-022-00095-2","url":null,"abstract":"<div><p>The leather value chain starts with livestock, the key source of hides and skins, and the main raw materials for the industry. Despite having the second-largest livestock population in Africa, Tanzania is only the 11th largest exporter of leather on the continent, underlining the disproportionate contribution of the sector to the economy. This study presents the results of a recent assessment aimed at identifying performance bottlenecks in Tanzania's leather sector. The assessment took place in October–December 2020 and involved 10 tanneries, 30 leather goods factories and 11 service providers/institutions. Findings reveal that 90% of tanneries are dissatisfied with the quality of hides and skins due to brand marks, flay cuts, skin diseases, and inadequate curing. These supply chain bottlenecks are further compounded by skill deficiencies among processors, poor waste management, and limited awareness about laws, policies and regulations governing trade in the sector. At the downstream end of the value chain, the trade in leather and related articles is facing competition from high importation of low-grade products like plastic shoes and second-hand products. This paper recommends that efforts to increase leather's economic and trade value need to focus on upgrading Tanzania’s production, processing, branding and marketing capacities.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-022-00095-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90320575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Laccase-functionalized magnetic framework composite enabled chlorophenols degradation, a potential remediation for fungicides residues in leather 漆酶功能化的磁框架复合材料使氯酚降解成为一种潜在的皮革杀菌剂残留修复方法

Journal of Leather Science and Engineering Pub Date : 2022-07-25 DOI: 10.1186/s42825-022-00094-3

Min Cao, Jie Yu, Xing Zhang, Yamei Lin, He Huang

{"title":"Laccase-functionalized magnetic framework composite enabled chlorophenols degradation, a potential remediation for fungicides residues in leather","authors":"Min Cao, Jie Yu, Xing Zhang, Yamei Lin, He Huang","doi":"10.1186/s42825-022-00094-3","DOIUrl":"10.1186/s42825-022-00094-3","url":null,"abstract":"<p>Chlorophenols, used as the fungicides in leather, are strictly limited in leather products. In this work, a metal–organic framework material, zeolitic metal azolate framework-7 (MAF-7), was first used to encapsulate laccase (Lac) to prepare MAF-7/Lac bio-composites with 98.5% immobilization yield. Afterward, Lac/MNP@MOM was formed by introducing the magnetic nanoparticles (MNPs) into the Lac@MOM. MAF-7 with better hydrophilicity and stronger pH buffering ability, exhibits good compatibility with laccase, which can reserve the activity of laccase after immobilization. Moreover, the porous structure of MAF-7 is favorable for the sufficient contact between laccase and substrates. Lac/MNP@MOM exhibited excellent activity when exposed to high temperature, extreme pH, and organic solvents, which also simplified complex recovery steps. Furthermore, the degradation rate of 2,4-dichlorophenol (2,4-DCP) could reach as high as 97% within 24 h by immobilized laccase, and after nine consecutive cycles of operation, enzyme activity could remain over 80%, which gives it the potential for practical applications.</p>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-022-00094-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77887847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Advances on the modification and biomedical applications of acellular dermal matrices 脱细胞真皮基质的改性及其生物医学应用研究进展

Journal of Leather Science and Engineering Pub Date : 2022-07-05 DOI: 10.1186/s42825-022-00093-4

Yining Chen, Xinhua Liu, Xin Zheng, Xuantao Huang, Weihua Dan, Zhengjun Li, Nianhua Dan, Yunbing Wang

{"title":"Advances on the modification and biomedical applications of acellular dermal matrices","authors":"Yining Chen, Xinhua Liu, Xin Zheng, Xuantao Huang, Weihua Dan, Zhengjun Li, Nianhua Dan, Yunbing Wang","doi":"10.1186/s42825-022-00093-4","DOIUrl":"10.1186/s42825-022-00093-4","url":null,"abstract":"<div><p>Acellular dermal matrix (ADM) is derived from natural skin by removing the entire epidermis and the cell components of dermis, but retaining the collagen components of dermis. It can be used as a therapeutic alternative to “gold standard” tissue grafts and has been widely used in many surgical fields, since it possesses affluent predominant physicochemical and biological characteristics that have attracted the attention of researchers. Herein, the basic science of biologics with a focus on ADMs is comprehensively described, the modification principles and technologies of ADM are discussed, and the characteristics of ADMs and the evidence behind their use for a variety of reconstructive and prosthetic purposes are reviewed. In addition, the advances in biomedical applications of ADMs and the common indications for use in reconstructing and repairing wounds, maintaining homeostasis in the filling of a tissue defect, guiding tissue regeneration, and delivering cells via grafts in surgical applications are thoroughly analyzed. This review expectedly promotes and inspires the emergence of natural raw collagen-based materials as an advanced substitute biomaterial to autologous tissue transplantation.\u0000</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-022-00093-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"118304866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Advances on the modification and biomedical applications of acellular dermal matrices 脱细胞真皮基质的改性及其生物医学应用研究进展

Journal of Leather Science and Engineering Pub Date : 2022-07-05 DOI: 10.1186/s42825-022-00093-4

Yining Chen, Xinhua Liu, Xin Zheng, Xuantao Huang, Weihua Dan, Zhengjun Li, N. Dan, Yunbing Wang

引用次数: 6

Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing 从本土植物树皮中提取一种新型鞣剂及其在皮革加工中的应用

Journal of Leather Science and Engineering Pub Date : 2022-06-25 DOI: 10.1186/s42825-022-00092-5

Raju Kumar Das, Al Mizan, Fatema Tuj Zohra, Sobur Ahmed, Khondoker Shahin Ahmed, Hemayet Hossain

{"title":"Extraction of a novel tanning agent from indigenous plant bark and its application in leather processing","authors":"Raju Kumar Das, Al Mizan, Fatema Tuj Zohra, Sobur Ahmed, Khondoker Shahin Ahmed, Hemayet Hossain","doi":"10.1186/s42825-022-00092-5","DOIUrl":"10.1186/s42825-022-00092-5","url":null,"abstract":"<div><p>The use of vegetable tanning materials in leather processing has drawn attention as an alternative to basic chromium sulphate for its natural abundance and environmental aspects. In this work, an attempt has been made to extract vegetable tannins from <i>Xylocarpus granatum</i> bark using different solvents (e.g., water, methanol, ethanol, and chloroform) and compare with conventional vegetable tanning agents such as mimosa and quebracho. The highest extraction efficiency was observed 31.22% by methanol. The presence of tannin content and polyphenolic compounds, e.g. (-)epicatechin (503 mg/100 g dry extract)<b>,</b> catechin hydrate (218 mg/100 g dry extract), catechol (29 mg/100 g dry extract) were ensured by UV–Vis, FT-IR spectroscopy and HPLC. Again, condensed tannins, moisture content, and pH of the methanol extracted tannin were found 47.80%, 5.82%, and 3.97 respectively. The leather tanned by <i>Xylocarpus granatum</i> tannin showed a shrinkage temperature of 86.34 ± 1.52 °C. Other properties such as tensile strength, tear strength, grain cracking load, and distention at grain cracking were comparable to conventional vegetable-tanned leather. The cross-sectional morphology of the tanned leathers was also characterized by scanning electron microscopy (SEM) which revealed a compact structure of the leather fibers. In light of the findings from the study, <i>X. granatum</i> bark tannin could be a well alternative to chromium and a new source of vegetable tannin for the leather industry.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-022-00092-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84494172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Natural leather based gamma-ray shielding materials enabled by the coordination of well-dispersed Bi3+/Ba2+ ions and RE2O3 coating 由分散良好的Bi3+/Ba2+离子和RE2O3涂层配合而成的天然皮革基γ射线屏蔽材料

Journal of Leather Science and Engineering Pub Date : 2022-06-15 DOI: 10.1186/s42825-022-00090-7

Yue Shen, Jibo Zhou, Zheng Han, Hao Li, Linping Yan, Xuepin Liao, Bi Shi

{"title":"Natural leather based gamma-ray shielding materials enabled by the coordination of well-dispersed Bi3+/Ba2+ ions and RE2O3 coating","authors":"Yue Shen, Jibo Zhou, Zheng Han, Hao Li, Linping Yan, Xuepin Liao, Bi Shi","doi":"10.1186/s42825-022-00090-7","DOIUrl":"10.1186/s42825-022-00090-7","url":null,"abstract":"<div><p>Gamma rays is widely used in modern science and technology, but it may cause health damage to practitioners. In the present study, natural composites based on leather and high-Z elements (atomic number ≥ 56) were fabricated and used as gamma rays shielding materials. These shielding materials were prepared by coating rare earth nanoparticles (Er<sub>2</sub>O<sub>3</sub> or La<sub>2</sub>O<sub>3</sub>) onto the surface of natural leather, which was first impregnated with Bi<sup>3+</sup> and Ba<sup>2+</sup>. Results show that the attenuation efficiency of the prepared Er<sub>1.31</sub>Bi<sub>5.46</sub>-NL (1.31 and 5.46 mmol cm<sup>−3</sup> loaded elements) with thickness of 3.2 mm was 61.57% for incident rays at 121.78 keV (<sup>152</sup>Eu) and reached 96.4% in the incident of 59.5 keV (<sup>241</sup>Am), which is comparable to that of 0.25-mm lead plate (54.54 mmol cm<sup>−3</sup>). In addition, these natural-leather-based shielding materials exhibited low density (approximately 1/10 of Pb), high strength and wearable behaviors.</p><h3>Graphical abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-022-00090-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78768640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Leather for flexible multifunctional bio-based materials: a review 柔性多功能生物基皮革材料研究进展

Journal of Leather Science and Engineering Pub Date : 2022-06-10 DOI: 10.1186/s42825-022-00091-6

Zhongxue Bai, Xuechuan Wang, Manhui Zheng, Ouyang Yue, Long Xie, Siyu Zha, Shuyin Dong, Tong Li, Yanyan Song, Mengchen Huang, Xinhua Liu

{"title":"Leather for flexible multifunctional bio-based materials: a review","authors":"Zhongxue Bai, Xuechuan Wang, Manhui Zheng, Ouyang Yue, Long Xie, Siyu Zha, Shuyin Dong, Tong Li, Yanyan Song, Mengchen Huang, Xinhua Liu","doi":"10.1186/s42825-022-00091-6","DOIUrl":"10.1186/s42825-022-00091-6","url":null,"abstract":"<div><p>Nowadays, diverse leather usage conditions and increasing demands from consumers challenge the leather industry. Traditional leather manufacturing is facing long-term challenges, including low-value threshold, confined application fields, and environmental issues. Leather inherits all the biomimetic properties of natural skin such as flexibility, sanitation, cold resistance, biocompatibility, biodegradability, and other cross-domain functions, achieving unremitting attention in multi-functional bio-based materials. Series of researches have been devoted to creating and developing leather-based flexible multi-functional bio-materials, including antibacterial leather, conductive leather, flame-retardant leather, self-cleaning leather, aromatic leather, and electromagnetic shielding leather. In this review, we provide a comprehensive overview of the commonly used leather-based functional materials. Furthermore, the possible challenges for the development of functional leathers are proposed, and expected development directions of leather-based functional materials are discussed. This review may promote and inspire the emerging preparation and applications of leather for flexible functional bio-based materials.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-022-00091-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81726920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Self-driven directional dehydration enabled eco-friendly manufacture of chrome-free leather 自驱动定向脱水使无铬皮革的环保制造成为可能

Journal of Leather Science and Engineering Pub Date : 2022-05-16 DOI: 10.1186/s42825-022-00089-0

Yawen Huang, Hanzhong Xiao, Haoliang Pu, Ni Xue, Baicun Hao, Xinle Huang, Bi Shi

引用次数: 5