Journal of Leather Science and Engineering最新文献_第5页

Identification of a dual-function peptide for the detection and haematopoietic potency assessment of type I collagen hydrolysates 一种用于I型胶原水解物检测和造血效能评估的双功能肽的鉴定

Journal of Leather Science and Engineering

Pub Date : 2025-02-26 DOI: 10.1186/s42825-024-00188-0

Guiya Deng, Jiajun Wang, Cuicui Men, Keyi Cao, Chengming Li, Liang Zheng, Haibin Liu, Shangwei Guo, Yaqin Huang

Type I collagen hydrolysate with haematopoietic activity has shown tremendous potential for application in the functional food fields. The identification of peptide with haematopoietic activity to ensure the efficiency of functional foods remains challenging because of the vast combinatorial potential of short peptides from collagen hydrolysates. In the present study, we identified a novel marker peptide (the I-1 peptide, GAAGLpGPK, p: hydroxyproline) for type I collagen with haematopoietic capabilities via theoretical sequence analysis and computational prediction of activity. The I-1 peptide was shown to increase the survival rate of haematopoietic stem cells following injury induced by 5-fluorouracil (5-FU), increasing the survival rate from 65.40 to 105.28%, thereby exhibiting significant haematopoietic activity. More importantly, the mechanism underlying the haematopoietic activity of the I-1 peptide was analogous to activate the JAK/STAT signalling pathway mediated by granulocyte‒macrophage colony‒stimulating factor. On this basis, a high-precision method for the detection of type I collagen hydrolysates was developed using the I-1 peptide (relative standard deviation = 1.57%). This study not only provides novel perspectives for the exploration of haematopoietic peptides but also offers a new methodology for controlling the bioactivity of collagen-based food products.

Graphical Abstract

具有造血活性的I型胶原水解物在功能性食品领域显示出巨大的应用潜力。由于胶原水解产物中的短肽具有巨大的组合潜力，因此鉴定具有造血活性的肽以确保功能性食品的效率仍然具有挑战性。在本研究中，我们通过理论序列分析和活性计算预测，确定了具有造血能力的I型胶原的一种新的标记肽（I-1肽，GAAGLpGPK， p：羟基脯氨酸）。I-1肽可提高5-氟尿嘧啶（5-FU）损伤后造血干细胞的存活率，使其存活率从65.40%提高到105.28%，显示出明显的造血活性。更重要的是，I-1肽造血活性的机制类似于激活由粒细胞-巨噬细胞集落刺激因子介导的JAK/STAT信号通路。在此基础上，建立了I-1肽检测I型胶原水解物的高精度方法（相对标准偏差= 1.57%）。该研究不仅为造血肽的探索提供了新的视角，也为胶原蛋白食品的生物活性控制提供了新的方法。图形抽象

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引用次数: 0

Topological data analysis with digital microscope leather images for animal species classification 用数码显微镜对皮革图像进行拓扑数据分析，用于动物物种分类

Journal of Leather Science and Engineering

Pub Date : 2025-02-14 DOI: 10.1186/s42825-024-00187-1

Takuya Ehiro, Takeshi Onji

This study presents a method for classifying cow and horse leather using a small number of digital microscope images and topological data analysis. In this method, hair pore coordinates in the images are used as essential information for classification. First, the coordinates were semiautomatically extracted using conventional image processing methods and persistent homology (PH) computation. Binary images with white pixels corresponding to the coordinates were generated, and their PHs were computed using filtration based on the Manhattan distance. In addition to the pairwise distance between the two pores, zeroth- and first-order lifetimes were used as explanatory variables to construct the classifier. Among the three explanatory variables, the zeroth-order lifetime resulted in the highest classification accuracy (86%) for the test data. Furthermore, we constructed logistic regression (LR) and random forest (RF) models using the zeroth-order lifetime computed from all images and conducted model interpretation. In both LR and RF, information on a zeroth-order lifetime of less than 10 was used as an important explanatory variable. Additionally, the inverse analysis of birth–death pairs suggested that the zeroth-order lifetime contains topological information distinct from the conventional pairwise distance. Our proposed method is designed to be robust in data-limited situations because it only uses hair pore coordinates as explanatory variables and does not require other information, such as hair pore density or pore size. This study demonstrates that accurate classifiers can be obtained using topological features related to hair pore arrangement.

Graphical Abstract

本研究提出了一种利用少量数码显微镜图像和拓扑数据分析对牛皮和马皮进行分类的方法。在该方法中，利用图像中的发孔坐标作为分类的基本信息。首先，利用传统的图像处理方法和持续同源性（PH）计算对坐标进行半自动提取；生成与坐标相对应的白色像素二值图像，并基于曼哈顿距离滤波计算其ph值。除了两个孔之间的成对距离外，零阶和一阶寿命被用作解释变量来构建分类器。在三个解释变量中，零阶寿命导致测试数据的分类准确率最高（86%）。此外，我们利用从所有图像中计算的零阶寿命构建了逻辑回归（LR）和随机森林（RF）模型，并进行了模型解释。在LR和RF中，小于10的零阶寿命的信息被用作重要的解释变量。此外，对出生-死亡对的逆分析表明，零阶寿命包含不同于传统成对距离的拓扑信息。我们提出的方法在数据有限的情况下具有鲁棒性，因为它只使用发孔坐标作为解释变量，而不需要其他信息，如发孔密度或毛孔大小。该研究表明，利用与发孔排列相关的拓扑特征可以获得准确的分类器。图形抽象

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引用次数: 0

Collagen peptide protects Saccharomyces cerevisiae from furfural stress for enhancing bioethanol synthesis 胶原蛋白肽保护酿酒酵母免受糠醛胁迫，促进生物乙醇合成

Journal of Leather Science and Engineering

Pub Date : 2025-02-02 DOI: 10.1186/s42825-024-00183-5

Ming Yang, Xia Li, Bo Wang, Xian Liu, Bo Zhang, Xue-Pin Liao

The efficient biosynthesis is important for the sustainable development of lignocellulosic ethanol industry, but it is limited by furfural stress produced with cellulose pretreatment. Collagen peptide (CP), as an affluent protein resource, considerably improved the tolerance of Saccharomyces cerevisiae against furfural stress. When the furfural concentration was 2 g/L, the residual sugar concentration was reduced from 122.39 to 8.90 g/L, and the final ethanol yield increased from 30.69 to 87.27 g/L in the presence of CP. In addition, the ethanol yield in CP containing media was higher than those in other peptides. Transcriptome analysis showed CP can improve the expression of genes (FBA1, PDC1, PDC6, and ENO1) associated with glycolysis to promote sugar utilization, and enhance ethanol biosynthesis under furfural stress, which were further verified by quantitative real-time PCR. These results indicated that CP is a promising protectant and accelerator for bioethanol biosynthesis.

Graphical abstract

高效的生物合成对木质纤维素乙醇工业的可持续发展具有重要意义，但纤维素预处理过程中产生的糠醛胁迫限制了高效生物合成的发展。胶原蛋白肽作为一种丰富的蛋白质资源，可显著提高酿酒酵母对糠醛胁迫的耐受性。当糠醛浓度为2 g/L时，CP的残糖浓度从122.39 g/L降低到8.90 g/L，最终乙醇产率从30.69 g/L提高到87.27 g/L，且含CP培养基的乙醇产率高于其他多肽培养基。转录组分析显示，CP可提高糖酵解相关基因（FBA1、PDC1、PDC6和ENO1）的表达，促进糖的利用，促进糠醛胁迫下乙醇的生物合成，并通过实时荧光定量PCR进一步验证。这些结果表明，CP是一种很有前途的生物乙醇合成保护剂和促进剂。图形抽象

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引用次数: 0

Ethylene vinyl acetate as a multifunctional compatibilizer for natural rubber/cis-1,4-polybutadiene rubber blends with enhanced compatibility, filler dispersion and mechanical properties 醋酸乙烯酯作为天然橡胶/顺式-1,4-聚丁二烯共混物的多功能相容剂，具有增强的相容性、填料分散性和机械性能

Journal of Leather Science and Engineering

Pub Date : 2025-02-01 DOI: 10.1186/s42825-024-00181-7

Jiyu Liang, Jianhui Wu, Chunhua Wang, Jun Sang, Keshuai Ren, To Ngai, Wei Lin

The blending of natural rubber (NR) with cis-1,4-polybutadiene rubber (BR) has gained widespread attention due to its potential in enhancing the low temperature resistance and abrasion resistance of NR. However, the incompatibility between NR and BR as well as the non-uniform distribution of fillers often have an adverse impact on the mechanical properties. Herein, we propose a facile approach to modulate the multi-scale structures in NR/BR blends including polymer compatibility and filler distribution by introducing ethylene vinyl acetate (EVA) with varying vinyl acetate (VA) content as multifunctional compatibilizers. The results indicate that the cure characteristics (i.e., processability) and mechanical properties of NR/BR blends can be readily tailored through adjustment of the VA content in EVA. When the VA content in EVA is increased to 18% (EVA-18), the NR/BR blends simultaneously exhibit favorable processability and mechanical properties. The microstructural analysis demonstrates that the introduction of EVA-18 not only enhances the compatibility between NR and BR with significantly reduced domain size, but also improves fillers dispersion in the rubber matrix. The presence of EVA-18 at concentrations up to 20 parts per hundred of rubber (phr) in NR/BR vulcanizates improves the mechanical properties by approximately 24% compared to un-compatibilized NR/BR vulcanizates, which is superior to the most present studies. This work will be beneficial for the development of NR/BR blends in the industry and provide a guideline for designing efficient compatibilizers for other immiscible rubber blends.

Graphical abstract

天然橡胶（NR）与顺式-1,4-聚丁二烯橡胶（BR）共混具有提高NR耐低温和耐磨性的潜力，受到了广泛的关注，但NR与BR之间的不相容以及填料分布的不均匀往往会对其力学性能产生不利影响。在此，我们提出了一种简单的方法来调节NR/BR共混物的多尺度结构，包括聚合物相容性和填料分布，通过引入具有不同醋酸乙烯（VA）含量的醋酸乙烯（EVA）作为多功能相容剂。结果表明，通过调整EVA中VA的含量，可以很容易地定制NR/BR共混物的固化特性（即加工性能）和力学性能。当EVA中VA含量增加到18% （EVA-18）时，NR/BR共混物同时具有良好的加工性能和力学性能。微观结构分析表明，EVA-18的引入不仅增强了NR与BR的相容性，显著减小了结构域尺寸，而且改善了填料在橡胶基体中的分散性。与未相容的NR/BR硫化胶相比，当EVA-18的浓度高达百分之20橡胶（phr）时，其机械性能提高了约24%，这优于目前大多数研究。本研究将有利于NR/BR共混物的工业发展，并为其它非混相橡胶共混物增容剂的设计提供指导。图形抽象

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引用次数: 0

Development of cinnamon essential oil-loaded Pickering emulsions stabilized by chitosan/gelatin nanoparticles with enhanced antibacterial and antibiofilm actives 壳聚糖/明胶纳米颗粒稳定肉桂精油皮克林乳剂的研制，增强其抗菌和抗生物膜活性

Journal of Leather Science and Engineering

Pub Date : 2025-01-03 DOI: 10.1186/s42825-024-00180-8

Zhilang Xu, Xinxin Wang, Huaqian Liang, Xinying Li, Derong Li, Changdao Mu, Liming Ge, Defu Li

Bacterial biofilm infection is a complicated and important global problem. Non-toxic biomass-based Pickering emulsions as an essential oil delivery system are a potentially effective means in biofilm treatment. Herein, the chitosan/gelatin complex nanoparticles (CGNPs) stabilized Pickering (CGP) emulsion loaded with cinnamon essential oil (CEO) was developed to inhibit and remove bacterial biofilms. CGNPs were initially successfully prepared with a particle size of 253.7 nm. Subsequently, CGP emulsions were prepared using CGNPs as the emulsifier and CEO as the oil phase, with the aqueous phase pH value of 5.5 and ionic strength of 50 mM. Amino groups of CGNPs were crosslinked with the aldehyde group of CEO via Schiff base reaction at the oil–water interface to form a denser core–shell structure, thus improving the stability of Pickering emulsion. The CGP emulsions exhibit controlled and long-term sustained release properties in essential oil delivery, with 89.8%, 81.0%, and 62.2% CEO release within 168 h for CGP-0.1, CGP-0.2, and CGP-0.3, respectively. Moreover, CGP emulsions have stronger antioxidant activities (nearly 100%), broad-spectrum antibacterial activities (> 90%), enhanced penetration and removal capabilities against preformed biofilms than single CEO or CGNPs, as well as its better biocompatibility than conventional surfactant-stabilized emulsions. Hence, CEO-delivered CGP emulsion could serve as a potential strategy against biofilm infections and bacterial resistance.

Graphical abstract

细菌生物膜感染是一个复杂而重要的全球性问题。无毒性生物质皮克林乳剂作为一种精油输送系统，在生物膜处理中具有潜在的有效性。本研究制备了壳聚糖/明胶复合纳米颗粒（CGNPs）稳定皮克林（CGP）乳液，负载肉桂精油（CEO），以抑制和去除细菌生物膜。初步成功制备了粒径为253.7 nm的CGNPs。随后，以CGNPs为乳化剂，以CEO为油相制备CGP乳液，水相pH值为5.5，离子强度为50 mM。CGNPs的氨基与CEO的醛基在油水界面通过希夫碱反应交联，形成更致密的核壳结构，提高了皮克林乳液的稳定性。CGP乳剂具有控释性和长效缓释性，CGP-0.1、CGP-0.2和CGP-0.3在168 h内的CEO释放率分别为89.8%、81.0%和62.2%。此外，CGP乳剂具有较强的抗氧化活性（接近100%），广谱抗菌活性（> 90%），对预成型生物膜的渗透和去除能力优于单一的CEO或CGNPs，生物相容性优于传统的表面活性剂稳定乳剂。因此，ceo - CGP乳剂可以作为对抗生物膜感染和细菌耐药性的潜在策略。图形抽象

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引用次数: 0

A novel recycling technology for chrome shavings: efficient separation of chromium and collagen fibers based on swelling inhibition in alkali-acid processing 一种新的铬屑回收技术：碱酸处理中基于抑制溶胀的铬和胶原纤维的有效分离

Journal of Leather Science and Engineering

Pub Date : 2025-01-02 DOI: 10.1186/s42825-024-00182-6

Honghong Chen, Minghui Li, Sadaqat Ali Chattha, Xu Zhang, Biyu Peng, Chunxiao Zhang

Dechroming techniques with a low degree of collagen hydrolysis and a high degree of dechroming are more suitable for the resource utilization of chrome shavings. However, achieving efficient simultaneous separation of chromium and collagen fibers is challenging because swollen collagen fibers absorb a large amount of chromium-containing water and are prone to hydrolysis after dechroming. This study investigated the correlation between the swelling inhibition of collagen fibers and the extent of dechroming and optimized the process parameters. The results demonstrated that the incorporation of neutral salt significantly increased the rate of dechroming and reduced the degree of collagen hydrolysis. The optimized alkali-acid-washing process was as follows: soaking in a Na₂SO₄ solution (4%, w/w), dechroming with a NaOH solution at pH 13.5, rapidly adjusting the pH of reactants to 1.0 with an H₂SO₄ solution, pressure filtration, washing the filtered residue with 5% Na₂SO₄ solution (w/w) at pH 1.0, followed by pressure filtration. After two cycles of the alkali-acid-washing process, the filtered residue was washed with an oxalic acid-Na₂SO₄ solution (5%, w/w) and pressure-filtered again. The chromium content of recovered collagen was reduced to 34.0 mg/kg. The degree of collagen hydrolysis was confined to 9% with the fiber morphology completely retained. The wastewater chromium content was reduced to 0.4 mg/L after the simple precipitation, meeting the direct discharge requirement. The recycled chrome was utilized as chrome-tanning agent. These results suggested that the established method could be a promising resource reutilization route for the sustainable development of the leather industry.

Graphical abstract

低胶原水解度和高脱色度的脱色技术更适合铬屑的资源化利用。然而，实现铬和胶原纤维的有效同时分离是具有挑战性的，因为肿胀的胶原纤维吸收了大量含铬的水，并且在脱铬后容易水解。本研究考察了胶原纤维的消肿作用与脱色程度的关系，并对工艺参数进行了优化。结果表明，中性盐的掺入显著提高了脱色率，降低了胶原蛋白的水解程度。优化的碱酸洗工艺为：Na2SO4溶液（4%,w/w）浸泡，NaOH溶液（pH值13.5）脱色，H2SO4溶液快速调节反应物pH值至1.0，加压过滤，过滤后的残渣用5% Na2SO4溶液（w/w）在pH值1.0下洗涤，再加压过滤。经过两个循环的碱-酸洗涤过程后，过滤后的残渣用草酸- na2so4溶液（5%,w/w）洗涤，再次加压过滤。回收胶原蛋白的铬含量降至34.0 mg/kg。胶原蛋白水解程度限制在9%，纤维形态完全保留。经简单沉淀处理后，废水铬含量降至0.4 mg/L，满足直接排放要求。将回收的铬用作铬鞣剂。上述结果表明，所建立的方法为皮革工业的可持续发展提供了一条有前途的资源再利用途径。图形抽象

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引用次数: 0

The study on multi-defect detection for leather using object detection techniques 基于目标检测技术的皮革多缺陷检测研究

Journal of Leather Science and Engineering

Pub Date : 2024-12-31 DOI: 10.1186/s42825-024-00186-2

Hasan Onur Ataç, Ahmet Kayabaşı, M. Fatih Aslan

Leather has played a very important role in human life for thousands of years. Ensuring the quality of leather and addressing surface defects poses significant challenges. Traditionally, human inspectors are responsible for detecting surface defects in tanneries, but this approach is labor-intensive and susceptible to human error. As a result, there is a growing demand for automated systems to detect the defects. Herein, artificial intelligence (AI) was developed to detect the defects on leather surfaces. Six targeted defect types, denoted as insect bites, scratches, holes, stitch marks, diseased and ruptures, were specifically addressed to enhance the overall quality assessment process. AI-based vision techniques were used to detect flaws on the leather on photographs taken with a high-resolution camera. Deep learning algorithms Mask R-CNN, YOLOv8 and within the framework of Detectron2, RetinaNet R101 3x, Faster R-CNN R101-FPN 3x models were performed and a comparison was made between these algorithms. By using the slicing aided hyper-inference (SAHI) algorithm in coordination with these algorithms, the detection rates of small defects on the images were increased. The highest accuracy rate was achieved when the YOLOv8 algorithm had 75 epoch values for training, and the SAHI algorithm had slice height-width values of 256 × 256 pixels.

Graphical Abstract

几千年来，皮革在人类生活中扮演着非常重要的角色。确保皮革的质量和解决表面缺陷提出了重大挑战。传统上，人类检查员负责检测制革厂的表面缺陷，但这种方法是劳动密集型的，容易出现人为错误。因此，对检测缺陷的自动化系统的需求不断增长。在此，开发了人工智能（AI）来检测皮革表面的缺陷。针对虫咬、划伤、孔洞、针痕、病变和破裂等六种目标缺陷类型进行了具体处理，以提高整体质量评估过程。基于人工智能的视觉技术被用于检测高分辨率相机拍摄的照片上的皮革缺陷。对深度学习算法Mask R-CNN、YOLOv8和Detectron2、RetinaNet R101 3x、Faster R-CNN R101- fpn 3x模型框架下的深度学习算法进行了比较。将切片辅助超推理（SAHI）算法与上述算法配合使用，提高了图像小缺陷的检出率。YOLOv8算法训练时的epoch值为75，SAHI算法的切片高宽值为256 × 256像素时准确率最高。图形抽象

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引用次数: 0

Collagen-based materials in male genitourinary diseases and tissue regeneration 胶原基材料在男性泌尿生殖系统疾病和组织再生中的应用

Journal of Leather Science and Engineering

Pub Date : 2024-12-18 DOI: 10.1186/s42825-024-00185-3

Fangyuan Li, XinHuang, Ruiying Wang, Yujing Li, Lukanxuan Wu, Xinyu Qiao, Yuchan Zhong, Guidong Gong, Wei Huang

Male genitourinary dysfunction causes serious physical or mental distress, such as infertility and psychological harm, which leads to impaired quality of life. Current conventional treatments involving drug therapy, surgical repair, and tissue grafting have a limited effect on recovering the function and fertility of the genitourinary organs. To address these limitations, various biomaterials have been explored, with collagen-based materials increasingly gaining attention for reconstructing the male genitourinary system due to their superior biocompatibility, biodegradability, low antigenicity, biomimetic 3D matrix characteristics, hemostatic efficacy, and tissue regeneration capabilities. This review covers the recent biomedical applications of collagen-based materials including treatment of erectile dysfunction, premature ejaculation, penile girth enlargement, prostate cancer, Peyronie's disease, chronic kidney disease, etc. Although there are relatively few clinical trials, the promising results of the existing studies on animal models reveal a bright future for collagen-based materials in the treatment of male genitourinary diseases.

Graphic Abstract

男性泌尿生殖功能障碍会造成严重的身体或精神困扰，如不育和心理伤害，从而导致生活质量受损。目前包括药物治疗、手术修复和组织移植在内的传统治疗方法对恢复泌尿生殖器官的功能和生育能力的影响有限。为了解决这些局限性，人们探索了各种生物材料，胶原基材料由于其优越的生物相容性、生物可降解性、低抗原性、仿生3D基质特性、止血功效和组织再生能力，在重建男性泌尿生殖系统方面越来越受到关注。本文综述了近年来胶原基材料在勃起功能障碍、早泄、阴茎增粗、前列腺癌、佩罗尼氏病、慢性肾脏疾病等方面的生物医学应用。虽然临床试验相对较少，但现有的动物模型研究结果显示，胶原基材料在治疗男性泌尿生殖系统疾病方面具有光明的前景。图形抽象

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引用次数: 0

The chondrogenic differentiation of BMSCs in collagen hydrogels and the effect of MMPs among cell-material interactions 胶原水凝胶中骨髓间充质干细胞的成软骨分化及基质蛋白酶在细胞-物质相互作用中的作用

Journal of Leather Science and Engineering

Pub Date : 2024-12-01 DOI: 10.1186/s42825-024-00176-4

Yajun Tang, Jing Wang, He Qiu, Yang Xu, Zhanhong Liu, Lu Song, Hai Lin, Xingdong Zhang

The purpose of this study was to investigate the influence of the advanced structure of collagen on the chondrogenic differentiation of BMSCs encapsulated in collagen hydrogels, with an emphasis on MMPs which might affect the cell-material interactions. Collagen and gelatin-based hydrogels with comparable physicochemical properties but mainly distinctive in molecular structure were prepared and further utilized to load BMSCs to study the chondrogenesis. The detection results of MMPs in hydrogels with and without TIMP at both gene and protein levels suggested that MMPs were involved in cell recognition, adhesion, migration, proliferation and further remodeling of cell microenvironment. The chondrogenic gene detection, histological observation and extracellular matrix analysis indicated that the BMSCs were well differentiated into chondrocytes and maintained the phenotypes in collagen hydrogels (C group) which preserved the native structures, comparing with those results acquired from gelatin hydrogels (G group). Finally, the expression of several integrin subunits was investigated to analyze the connection of these cell membrane surface proteins and microenvironment remodeled by MMPs in collagen and gelatin hydrogels. The conclusion was drawn that the advanced structure of collagen affected the chondrogenesis of BMSCs via the cell-material interactions, among which MMPs were one of the major factors crucial to form appropriate microenvironment to modulate the BMSCs fate.

Graphical abstract

本研究的目的是探讨胶原的高级结构对胶原水凝胶包膜的骨髓间充质干细胞成软骨分化的影响，重点研究可能影响细胞-物质相互作用的MMPs。制备了物理化学性质相近但分子结构主要不同的胶原蛋白和明胶基水凝胶，并将其应用于骨髓间充质干细胞的软骨形成研究。在带TIMP和不带TIMP的水凝胶中，MMPs在基因和蛋白水平上的检测结果表明，MMPs参与了细胞识别、粘附、迁移、增殖以及细胞微环境的进一步重塑。成软骨基因检测、组织学观察和细胞外基质分析表明，与明胶水凝胶（G组）相比，胶原水凝胶（C组）中BMSCs分化良好，表型保持原状，保留了原有结构。最后，我们研究了几个整合素亚基的表达，分析了这些细胞膜表面蛋白与胶原和明胶水凝胶中MMPs重塑的微环境的关系。结论：胶原的高级结构通过细胞-物质相互作用影响骨髓间充质干细胞的软骨形成，其中MMPs是形成适当微环境调节骨髓间充质干细胞命运的重要因素之一。图形抽象

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引用次数: 0

A comprehensive review of cellulose nanomaterials for adsorption of wastewater pollutants: focus on dye and heavy metal Cr adsorption and oil/water separation 全面评述用于吸附废水污染物的纤维素纳米材料：重点关注染料和重金属 Cr 的吸附以及油/水分离

Journal of Leather Science and Engineering

Pub Date : 2024-11-20 DOI: 10.1186/s42825-024-00179-1

Yadong Yang, Xuanze Li, Caichao Wan, Zhe Zhang, Wenzhe Cao, Guanyu Wang, Yiqiang Wu

Cellulose is widely distributed in higher plants and constitutes the most abundant natural biopolymer on Earth. Nanocellulose is a cellulose material with nanoscale dimensions, obtained through special processing and treatment. Up to now, nanocellulose has been widely investigated as a biosorbent to absorb various types of pollutants in wastewater due to its excellent properties, such as large specific surface area, antifouling behaviour, high aspect ratio, high heat resistance, excellent mechanical properties, biodegradability and biocompatibility. In addition, nanocellulose can be rationally structured by different recombination techniques such as membranes, sponges, aerogels, hydrogels and microspheres and provide specialised functionality for the adsorption of various types of pollutants from wastewater. This review introduces the basic properties, classification and modification methods of nanocellulose; discusses the preparation strategies of nanocellulose-based recombinant materials (including vacuum/pressurised filtration, sol–gel and electrospinning); reviews research progress in the adsorption of organic dyes and heavy metal Cr, as well as the separation of oil/water using nanocellulose-based recombinant materials; and explores the potential of nanocellulose in treating tannery wastewater. Finally, the problems faced by nanocellulose-based recombinant materials and future prospects are presented.

Graphical Abstract

纤维素广泛分布于高等植物中，是地球上最丰富的天然生物聚合物。纳米纤维素是一种通过特殊加工和处理获得的具有纳米尺寸的纤维素材料。纳米纤维素具有比表面积大、防污、高纵横比、高耐热性、优异的机械性能、生物可降解性和生物相容性等优良特性，迄今为止，纳米纤维素作为一种生物吸附剂吸收废水中的各种污染物已得到广泛研究。此外，纳米纤维素还可以通过不同的重组技术（如膜、海绵、气凝胶、水凝胶和微球）进行合理的结构化，并为吸附废水中的各类污染物提供专门的功能。本综述介绍了纳米纤维素的基本特性、分类和改性方法；讨论了基于纳米纤维素的重组材料的制备策略（包括真空/加压过滤、溶胶-凝胶和电纺丝）；回顾了利用基于纳米纤维素的重组材料吸附有机染料和重金属 Cr 以及分离油/水的研究进展；并探讨了纳米纤维素在处理制革废水方面的潜力。最后，介绍了基于纳米纤维素的重组材料面临的问题和未来前景。图文摘要

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引用次数: 0