Carbohydrate Polymers最新文献_第9页

PVA-enhanced green synthesis of CMC-based lithium adsorption films PVA 增强型 CMC 基锂吸附薄膜的绿色合成

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-12 DOI: 10.1016/j.carbpol.2024.122973

Shengkai Liu , Huiling Li , Xi Li , Wei Wang , Chunguang Rong , Mengjie Yang , Yonggui Wang , Jing Wang , Yabei Xu , Daxin Liang , Yanjun Xie

{"title":"PVA-enhanced green synthesis of CMC-based lithium adsorption films","authors":"Shengkai Liu , Huiling Li , Xi Li , Wei Wang , Chunguang Rong , Mengjie Yang , Yonggui Wang , Jing Wang , Yabei Xu , Daxin Liang , Yanjun Xie","doi":"10.1016/j.carbpol.2024.122973","DOIUrl":"10.1016/j.carbpol.2024.122973","url":null,"abstract":"<div><div>The titanium-based lithium ion sieve (HTO), renowned for its exceptional adsorption performance and cyclic stability, was utilized in addressing the global shortage of lithium resources. However, the recovery and reuse efficiency of HTO in powder form is relatively low, which limits its application in industrial fields. To address this issue, this study utilized carboxymethyl cellulose (CMC) as the principal matrix material, while polyvinyl alcohol (PVA) played a dual function as both matrix and crosslinker, negating the necessity for supplementary crosslinking materials. Employing water as the only solvent, HTO was embedded into the CMC-PVA blended film matrix. It was observed that augmenting the CMC content substantially elevates the adsorptive capability of the film. However, this enhancement comes at the cost of reduced mechanical robustness and diminished stability in solution. Consequently, by balancing the influence of adsorptive capacity and stability through fine-tuning the CMC-to-PVA ratio. Even when HTO powder is encapsulated within the film, the adsorption film retains the excellent adsorption properties of HTO, achieving an adsorption capacity for lithium of 29.21 mg g<sup>−1</sup> within 12 h. This study provides an innovative pathway and ideas for the large-scale, low-cost production of sustainable lithium-ion adsorption materials.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122973"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carboxymethyl chitosan and sodium alginate oxide pH-sensitive dual-release hydrogel for diabetes wound healing: The combination of astilbin liposomes and diclofenac sodium 用于糖尿病伤口愈合的羧甲基壳聚糖和氧化海藻酸钠 pH 值敏感型双释放水凝胶：芪醇脂质体与双氯芬酸钠的结合

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-12 DOI: 10.1016/j.carbpol.2024.122960

Xiaoyu Wu , Yulai Wang , Xinglong Liu , Qiteng Ding , Shuai Zhang , Yue Wang , Guodong Chai , Yan Tang , Junran Yang , Taojing Yu , Wencong Liu , Chuanbo Ding

{"title":"Carboxymethyl chitosan and sodium alginate oxide pH-sensitive dual-release hydrogel for diabetes wound healing: The combination of astilbin liposomes and diclofenac sodium","authors":"Xiaoyu Wu , Yulai Wang , Xinglong Liu , Qiteng Ding , Shuai Zhang , Yue Wang , Guodong Chai , Yan Tang , Junran Yang , Taojing Yu , Wencong Liu , Chuanbo Ding","doi":"10.1016/j.carbpol.2024.122960","DOIUrl":"10.1016/j.carbpol.2024.122960","url":null,"abstract":"<div><div>Difficulty in diabetic wound healing presents a significant challenge in clinical practice. This study developed a hydrogel utilizing oxidized sodium alginate (OSA) and carboxymethyl chitosan (CMCS) as the matrix. Astilbin (ASB), known for its antioxidant properties, was incorporated into Astilbin liposome (AL) using a thin film dispersion method. Diclofenac sodium (DS) and AL, both possessing anti-inflammatory properties, were then encapsulated in the hydrogel to create a pH-responsive dual-release system for topical application to expedite diabetic wound healing. Results from the research demonstrate that the composite hydrogel exhibits favorable biodegradability, stable rheology, and swelling capacity, facilitating the controlled release of AL and DS. In vivo and in vitro data demonstrated that the hydrogel was biocompatible and anti-inflammatory, antibacterial and homeostatic, and significantly promoted the process of inflammation suppression, angiogenesis and fibrotic repair of wounds. In conclusion, this novel hydrogel provides a simple and effective method for the repair of chronic diabetic wounds.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122960"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mucoadhesive polyelectrolyte complexes of fucoidan and chitin nanowhiskers to prolong the antiprotozoal activity of metronidazole 褐藻糖胶和甲壳素纳米须的黏附性聚电解质复合物延长甲硝唑的抗原虫活性

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-12 DOI: 10.1016/j.carbpol.2024.122975

Natallia V. Dubashynskaya , Valentina A. Petrova , Irina S. Ustyukhina , Andrey V. Sgibnev , Yuliya I. Cherkasova , Yuliya A. Nashchekina , Elena N. Vlasova , Dmitry P. Romanov , Yury A. Skorik

{"title":"Mucoadhesive polyelectrolyte complexes of fucoidan and chitin nanowhiskers to prolong the antiprotozoal activity of metronidazole","authors":"Natallia V. Dubashynskaya , Valentina A. Petrova , Irina S. Ustyukhina , Andrey V. Sgibnev , Yuliya I. Cherkasova , Yuliya A. Nashchekina , Elena N. Vlasova , Dmitry P. Romanov , Yury A. Skorik","doi":"10.1016/j.carbpol.2024.122975","DOIUrl":"10.1016/j.carbpol.2024.122975","url":null,"abstract":"<div><div>The improvement of the specific pharmacological activity of agents with antimicrobial and antiprotozoal properties (e.g. metronidazole, MET) is of interest for clinical applications in the treatment of bacterial infections. In this work, we prepared the polyelectrolyte complexes (PEC) based on chitin nanowhiskers (CNW) and fucoidan (FUC) with hydrodynamic diameters of 244 and 816 nm, a ζ-potential of about −22 mV and good mucoadhesive properties. The incorporation of MET into PEC particles promoted the sustained release of MET for 10 h and maintained the antiprotozoal activity against clinical isolates of <em>Trichomonas vaginalis</em> for up to 10 h. At concentrations of 1–3 mg/mL, the CWN-FUC-MET particles showed no cytotoxicity (HeLa cell line). The sustained drug release rate, combined with pronounced mucoadhesive properties, improved pharmacological activity, and non-cytotoxicity makes the developed biopolymer delivery systems promising candidates for further clinical trials.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122975"},"PeriodicalIF":10.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the dielectric properties of flexible β-CD/PVDF all-organic films 柔性 β-CD/PVDF 全有机薄膜的介电性能研究

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-10 DOI: 10.1016/j.carbpol.2024.122968

Ming Wang , Hongwei Lu , Bengang Li , Shijia Yang , Weitao Su

{"title":"Research on the dielectric properties of flexible β-CD/PVDF all-organic films","authors":"Ming Wang , Hongwei Lu , Bengang Li , Shijia Yang , Weitao Su","doi":"10.1016/j.carbpol.2024.122968","DOIUrl":"10.1016/j.carbpol.2024.122968","url":null,"abstract":"<div><div>All-organic dielectric polymers are currently a hot topic in the study of dielectric materials. However, it is still challenging to improve the dielectric constant, breakdown strength, and energy storage density of materials simultaneously. This study used PVDF as the matrix, and β-CD/PVDF all-organic composite dielectric films were prepared using a solution blending method. The research found that after the introduction of β-Cyclodextrin (β-CD), the β-phase content of the polymer and the crystallinity of the films were 40.9 % and 48.96 %, respectively, which are 1.1 and 1.4 times that of pure PVDF. Improved microstructure significantly enhanced the dielectric performance and energy density of the composite films with β-CD. The composite films with β-CD with dielectric constant (<em>ε</em><sub><em>r</em></sub>), breakdown strength (<em>E</em><sub><em>b</em></sub>), and energy density reaching 12.35, 401.7 MV/m, and 6.11 J/cm<sup>3</sup>, respectively, which are 1.38, 1.1, and 1.3 times that of pure PVDF. This method provides a new pathway for preparing all-organic dielectric films with high dielectric constant, high breakdown strength, and high energy density.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122968"},"PeriodicalIF":10.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dissecting and optimizing bioactivities of chitosans by enzymatic modification 通过酶改性剖析和优化壳聚糖的生物活性

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-09 DOI: 10.1016/j.carbpol.2024.122958

Carolin Richter, Stefan Cord-Landwehr, Ratna Singh , Judith Ryll, Bruno M. Moerschbacher

{"title":"Dissecting and optimizing bioactivities of chitosans by enzymatic modification","authors":"Carolin Richter, Stefan Cord-Landwehr, Ratna Singh , Judith Ryll, Bruno M. Moerschbacher","doi":"10.1016/j.carbpol.2024.122958","DOIUrl":"10.1016/j.carbpol.2024.122958","url":null,"abstract":"<div><div>Chitosans are versatile biopolymers with antimicrobial and plant-strengthening properties relevant to agriculture. However, a limited understanding of molecular structure-function relationships and cellular modes of action of chitosans hampers the development of effective chitosan-based agro-biologics. We partially hydrolyzed a chitosan polymer (degree of polymerization DP 800, fraction of acetylation <em>F</em><sub>A</sub> 0.2) using acetic acid, a GH18 chitinase, or a GH8 chitosanase. All hydrolysates contained mixtures of chitosan oligomers and small polymers, but their composition in terms of DP, <em>F</em><sub>A</sub>, and pattern of acetylation (PA) differed greatly. Importantly, chitinase products had mostly deacetylated residues at their ends, flanking mostly deacetylated residues, and vice versa for chitosanase products, while the products of acid hydrolysis had random PA. Acid hydrolysis did not significantly change antifungal and antibacterial activities. In contrast, chitinase hydrolysis slightly increased antibacterial, and chitosanase almost abolished antifungal activity. Elicitor and priming activities in the plant <em>Arabidopsis</em> were unchanged by acid, destroyed by chitinase, and increased by chitosanase hydrolysis. Transcriptomic analysis revealed that the chitosan polymer strongly induced genes involved in photosynthesis, while the chitosanase hydrolysate strongly induced genes involved in disease resistance. Clearly, different bioactivities require different chitosans, and enzymatic modification can fine-tune these activities as required for different agricultural products.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122958"},"PeriodicalIF":10.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cyclodextrin-based iodophors with high iodine retention in solid state and in dilute solutions 在固态和稀溶液中具有高碘保留率的基于环糊精的碘剂

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-09 DOI: 10.1016/j.carbpol.2024.122969

Fabiola Spitaleri , Sandro Dattilo , Danilo Aleo , Maria Grazia Saita , Angela Patti

{"title":"Cyclodextrin-based iodophors with high iodine retention in solid state and in dilute solutions","authors":"Fabiola Spitaleri , Sandro Dattilo , Danilo Aleo , Maria Grazia Saita , Angela Patti","doi":"10.1016/j.carbpol.2024.122969","DOIUrl":"10.1016/j.carbpol.2024.122969","url":null,"abstract":"<div><div>Iodine is a broad-spectrum antiseptic with the advantage of not inducing bacterial resistance, but its use is limited by volatility. This issue can be overcome by using “iodophors”, which are molecular systems able to retain iodine and provide its sustained release. Cyclodextrins have proven effective in stabilizing iodine in solution through the formation of complexes, the preparation of which in solid form could offer additional benefits in terms of handling and storage. A series of cyclodextrins (CD) were tested for their ability to form solid complexes with iodine and it was found that the addition of potassium iodide in the solid-state preparation of the complexes significantly increases both iodine incorporation and long-term stability compared to the solids obtained without added potassium iodide. Dilute aqueous solutions of the obtained complexes were monitored for their iodine content in different conditions and excellent stability was observed in some cases. Furthermore, these cyclodextrin‑iodine complexes showed no cytotoxic effects on human corneal epithelial cells (HCE-2) while displayed very high antimicrobial (against <em>Staphylococcus epiderm</em>is) and antiviral (against Human adenovirus 5) activities. These findings highlight the potential of cyclodextrins as a versatile platform for the development of solid iodophors as an alternative to the traditional povidone-iodide formulation.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122969"},"PeriodicalIF":10.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural analysis of gum arabic side chains from Acacia seyal released by bifidobacterial β-arabino-oligosaccharide 3-O-β-l-arabinopyranosyl-α-l-arabinofuranosidase 双歧杆菌 3-O-β-larabinopyranosyl-α-larabinofuranosidase 释放的阿拉伯胶侧链的结构分析

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-09 DOI: 10.1016/j.carbpol.2024.122965

Yuki Sasaki , Ayako Matsuo , Mimika Hashiguchi , Kanoko Fujimura , Hiroyuki Koshino , Katsunori Tanaka , Yukishige Ito , Kanefumi Kitahara , Akihiro Ishiwata , Kiyotaka Fujita

{"title":"Structural analysis of gum arabic side chains from Acacia seyal released by bifidobacterial β-arabino-oligosaccharide 3-O-β-l-arabinopyranosyl-α-l-arabinofuranosidase","authors":"Yuki Sasaki , Ayako Matsuo , Mimika Hashiguchi , Kanoko Fujimura , Hiroyuki Koshino , Katsunori Tanaka , Yukishige Ito , Kanefumi Kitahara , Akihiro Ishiwata , Kiyotaka Fujita","doi":"10.1016/j.carbpol.2024.122965","DOIUrl":"10.1016/j.carbpol.2024.122965","url":null,"abstract":"<div><div>Gum arabic is widely used in the food and beverage industries for its emulsifying, stabilizing, and prebiotic effects, which promote <em>Bifidobacterium</em> growth. The two commercially approved varieties of gum arabic, namely, <em>Acacia senegal</em> gum and <em>A. seyal</em> gum, predominantly consist of arabinogalactan protein (AGP), albeit with different side chain modifications. We previously characterized two enzymes belonging to glycoside hydrolase (GH) family 39 in bifidobacteria involved in the release of α-D-Gal-(1→3)-α-<span>l</span>-Ara and β-<span>l</span>-Ara<em>p</em>-(1→3)-α-<span>l</span>-Ara from the side chains of <em>A. senegal</em> gum. Although the carbohydrate structure of <em>A. senegal</em> gum is being increasingly explored, limited information is available on <em>A. seyal</em> gum. In this study, we discovered a novel GH39 β-arabino-oligosaccharide 3-<em>O</em>-β-<span>l</span>-arabinopyranosyl-α-<span>l</span>-arabinofuranosidase from <em>Bifidobacterium catenulatum</em> and revealed the accurate structure of β-<span>l</span>-arabino-oligosaccharides released from <em>A. seyal</em> gum as [β-<span>l</span>-Ara<em>f</em>-(1→2)-]<sub>n</sub>-β-<span>l</span>-Ara<em>p</em>-(1→3)-α-<span>l</span>-Ara<em>f</em>-(1→) (n = 0–3). Growth assays and intracellular enzyme activity assessments using <em>B. catenulatum</em> revealed that β-<span>l</span>-arabino-oligosaccharides were degraded to <span>l</span>-arabinose by GH127 β-<span>l</span>-arabinofuranosidase and GH36 β-<span>l</span>-arabinopyranosidase. This study provides new insights into the diversity of AGP structures and the utilization mechanisms of <em>A. seyal</em> gum in bifidobacteria.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122965"},"PeriodicalIF":10.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and characterization of dextran-modified ZnO and Cu-doped ZnO nanohybrid material for enhanced antimicrobial delivery and activity 制备右旋糖酐修饰氧化锌和铜掺杂氧化锌纳米杂化材料并确定其特性，以增强其抗菌递送和活性

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-08 DOI: 10.1016/j.carbpol.2024.122947

Tita Foophow , Pipat Lertkowit , Udomsak Kitthawee , Weerachon Phoohinkong

{"title":"Preparation and characterization of dextran-modified ZnO and Cu-doped ZnO nanohybrid material for enhanced antimicrobial delivery and activity","authors":"Tita Foophow , Pipat Lertkowit , Udomsak Kitthawee , Weerachon Phoohinkong","doi":"10.1016/j.carbpol.2024.122947","DOIUrl":"10.1016/j.carbpol.2024.122947","url":null,"abstract":"<div><div>Zinc oxide (ZnO) nanoparticles are widely used in various applications, particularly in antimicrobial products. Efforts to enhance their performance and efficacy, including copper (Cu) doping and incorporating natural polymers. In this study, dextran-modified ZnO and Cu-doped ZnO nanohybrids were synthesized and characterized using exodextran isolated from <em>Leuconostoc mesenteroides</em> TISTR 473. Characterization results showed that dextran binds to the surface of ZnO particles through C<img>O⋯Zn and C-OH⋯O interactions, particularly at oxygen vacancy sites. The incorporation of dextran improved the antibacterial efficacy of ZnO and Cu-doped ZnO nanoparticles against bacteria related to fruit and vegetable spoilage, including gram-positive <em>Bacillus altitudinis</em> and gram-negative <em>Achromobacter mucicolens</em>. These findings highlight the potential of dextran-modified ZnO nanomaterials in enhancing antimicrobial activity and biocompatibility for biomedical applications, as well as their use in food packaging to extend shelf life.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122947"},"PeriodicalIF":10.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of hemicellulose in sacred lotus (Nelumbo nucifera Gaetn.) petiole during xylogenesis 木质化过程中圣莲（Nelumbo nucifera Gaetn.）叶柄中半纤维素的特征

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-08 DOI: 10.1016/j.carbpol.2024.122940

Anran Feng , Yingying Guan , Haoqiang Yang , Biao Zheng , Wei Zeng , Pengfei Hao , Antony Bacic , Shi-you Ding , Ai-min Wu

{"title":"Characterization of hemicellulose in sacred lotus (Nelumbo nucifera Gaetn.) petiole during xylogenesis","authors":"Anran Feng , Yingying Guan , Haoqiang Yang , Biao Zheng , Wei Zeng , Pengfei Hao , Antony Bacic , Shi-you Ding , Ai-min Wu","doi":"10.1016/j.carbpol.2024.122940","DOIUrl":"10.1016/j.carbpol.2024.122940","url":null,"abstract":"<div><div>Hemicelluloses play a crucial role in connecting cellulose and lignin within the plant cell wall and find extensive biotechnological applications. There is a notable gap in research concerning the hemicellulose from <em>Nelumbo nucifera</em>, the basal eudicot adapted to aquatic environments. To fill this gap, hemicellulose characteristics from the apical to the basal segments of petioles from 4-month-old <em>N. nucifera</em> plants were examined. Results showed that during the initial phase of xylogenesis, xyloglucan predominated in the hemicellulose fraction, while later stages were gradually dominated by 4-<em>O</em>-methyl-D-glucurono-D-xylan (MGX). Having a typical tetrasaccharide reducing end, the glucuronoxylan in <em>N. nucifera</em> was also shown with a typical the MeGlcA on the C2 Xyl carbon sidechain. The total degree of acetylation increased from apex (0.45) to base (0.55) of petiole. Notably, no arabinosyl side-chains were detected in the <em>N. nucifera</em> xylan, suggesting that <em>N. nucifera</em> hemicellulose aligns most closely with dicot wood rather than the non-commelinid monocot (grass). Transcriptomic analysis also indicated that the middle and basal region exhibited higher xylan synthesis activity. This study contributes new evidence supporting the conservation of dicotyledonous hemicellulose during evolution.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122940"},"PeriodicalIF":10.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced physicochemical properties and riboflavin delivery ability of soy isolate protein/sugar beet pectin composite freeze-dried gels prepared by double crosslinking strategy 采用双交联策略制备的大豆分离蛋白/甜菜果胶复合冻干凝胶的理化性质和核黄素输送能力得到增强

IF 10.7 1区化学

Carbohydrate Polymers Pub Date : 2024-11-08 DOI: 10.1016/j.carbpol.2024.122953

Jin Cao, Liang Li, Xiaoyu Yang

{"title":"Enhanced physicochemical properties and riboflavin delivery ability of soy isolate protein/sugar beet pectin composite freeze-dried gels prepared by double crosslinking strategy","authors":"Jin Cao, Liang Li, Xiaoyu Yang","doi":"10.1016/j.carbpol.2024.122953","DOIUrl":"10.1016/j.carbpol.2024.122953","url":null,"abstract":"<div><div>Improving the mechanical strength of protein freeze-dried gels materials has become a research priority in the field of nutrient delivery system development in recent years. In this study, double crosslinking freeze-dried gels were prepared by integrating laccase catalyzed sugar beet pectin (SBP) as a highly active filler molecule into the soybean isolate protein (SPI) thermally induced gel network, followed by freeze-drying. The double crosslinking freeze-dried gels were a porous material and the addition of SBP resulted in the formation of amorphous forms of freeze-dried gels with lower binding energy. The freeze-dried gels with 2.0 % SBP addition had the densest microstructure with the highest density (19.00 mg/cm<sup>3</sup>) and mechanical strength (180.43 ± 15.27 KPa), and hydrogen bonding, N<img>H, C<img>N, and C<img>O bands were the most important factors to maintain the freeze-dried gels structure. As the concentration of sugar beet pectin increased, the release mechanism of riboflavin underwent a shift from a Fickian to a non-Fickian diffusion mechanism. In addition, the highest bioavailability of riboflavin was found in the freeze-dried gels spiked with 2.0 % SBP. These results will contribute to the development of double crosslinking freeze-dried gels carriers for targeted slow release of hydrophilic bioactive.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"349 ","pages":"Article 122953"},"PeriodicalIF":10.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0