Carbohydrate Polymers最新文献

英文中文

Transformation of native starch into V-type granular starch through ethanol-aqueous heat treatment and its swelling behavior in cold water

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-25 DOI: 10.1016/j.carbpol.2025.123313

Jiaxin Li , Edoardo Capuano , Li-Tao Tong

The poor hydrophilicity of raw starch limits its applications, resulting in increased processing complexity. Ethanol-induced V-type granular starch (EVGS), a type of cold-water swelling starch, can be prepared through ethanol-aqueous heat treatment (EAHT). Four types of native starch with three crystalline structures were used to prepare EVGS. At 70 % ethanol, the preparation process was divided into temperature gradients to explore the EVGS formation process. X-ray diffraction (XRD), DSC (Differential Scanning Calorimetry) and non-isothermal kinetics analysis revealed three stages in the formation process: destruction of the native crystalline structure, formation of composite crystalline structure, and complete formation of V-type crystalline structure. The observed “blocklets” structure of EVGS suggested that the crystalline structure transformation might be based on this structural unit. A water phase gradient dispersion method was used to monitor the cold-water swelling behavior of EVGS: as the dispersion time increased, short-chain amylose leached first, followed by long-chain amylose, accompanied by the enhanced hydrophilicity of amylopectin, the “blocklets” structure limited EVGS swelling extent and prevented complete granules rupture, contributing to its cold paste stability. Overall, this study further elucidated the formation process and the multi-scale structure of EVGS and proposed an interpretation of cold-water swelling process for EVGS.

{"title":"Transformation of native starch into V-type granular starch through ethanol-aqueous heat treatment and its swelling behavior in cold water","authors":"Jiaxin Li , Edoardo Capuano , Li-Tao Tong","doi":"10.1016/j.carbpol.2025.123313","DOIUrl":"10.1016/j.carbpol.2025.123313","url":null,"abstract":"<div><div>The poor hydrophilicity of raw starch limits its applications, resulting in increased processing complexity. Ethanol-induced V-type granular starch (EVGS), a type of cold-water swelling starch, can be prepared through ethanol-aqueous heat treatment (EAHT). Four types of native starch with three crystalline structures were used to prepare EVGS. At 70 % ethanol, the preparation process was divided into temperature gradients to explore the EVGS formation process. X-ray diffraction (XRD), DSC (Differential Scanning Calorimetry) and non-isothermal kinetics analysis revealed three stages in the formation process: destruction of the native crystalline structure, formation of composite crystalline structure, and complete formation of V-type crystalline structure. The observed “blocklets” structure of EVGS suggested that the crystalline structure transformation might be based on this structural unit. A water phase gradient dispersion method was used to monitor the cold-water swelling behavior of EVGS: as the dispersion time increased, short-chain amylose leached first, followed by long-chain amylose, accompanied by the enhanced hydrophilicity of amylopectin, the “blocklets” structure limited EVGS swelling extent and prevented complete granules rupture, contributing to its cold paste stability. Overall, this study further elucidated the formation process and the multi-scale structure of EVGS and proposed an interpretation of cold-water swelling process for EVGS.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123313"},"PeriodicalIF":10.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143357406","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

Eco-friendly polylactic acid/modified thermoplastic starch films enhanced with clove essential oil and cochineal for dual-functional active and intelligent food packaging

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-25 DOI: 10.1016/j.carbpol.2025.123320

Mohammad Mohammadi, Mohammad Fasihi

This study introduces a novel, industrially viable, eco-friendly packaging film based on polylactic acid (PLA) and thermoplastic starch (TPS), incorporated with cochineal dye and clove essential oil (CEO), to simultaneously monitor spoilage and preserve high-protein foods, such as shrimp. Citric acid-modified TPS showed significant improvements in particle dispersion, interphase adhesion, and size reduction when blended with PLA. Incorporating 20 % modified TPS into PLA significantly enhanced ammonia sensitivity, achieving faster and more uniform color changes, while improving tensile strength by 32.6 % to 28.48 ± 1.25 MPa and increasing water vapor resistance by 11 % compared to standard PLA/TPS film. The engineered composite films effectively indicated shrimp freshness by transitioning from orange to purple, exhibiting a 117 % higher total color change (ΔE) compared to the unmodified film, reaching 69.54 ± 2.36. This color change demonstrated a strong correlation with shrimp spoilage indices within 24 h of storage at 28 °C.The films demonstrated antibacterial efficacy, with inhibition zones of 16.1 mm and 12.3 mm against L. monocytogenes and E. coli, respectively. CEO's moisture-sensitive release mechanism maintained total viable count (TVC) levels below the 7 log CFU/mL threshold for 15 days under 4 °C storage, extending shrimp shelf life by 10 days compared to control samples.

{"title":"Eco-friendly polylactic acid/modified thermoplastic starch films enhanced with clove essential oil and cochineal for dual-functional active and intelligent food packaging","authors":"Mohammad Mohammadi, Mohammad Fasihi","doi":"10.1016/j.carbpol.2025.123320","DOIUrl":"10.1016/j.carbpol.2025.123320","url":null,"abstract":"<div><div>This study introduces a novel, industrially viable, eco-friendly packaging film based on polylactic acid (PLA) and thermoplastic starch (TPS), incorporated with cochineal dye and clove essential oil (CEO), to simultaneously monitor spoilage and preserve high-protein foods, such as shrimp. Citric acid-modified TPS showed significant improvements in particle dispersion, interphase adhesion, and size reduction when blended with PLA. Incorporating 20 % modified TPS into PLA significantly enhanced ammonia sensitivity, achieving faster and more uniform color changes, while improving tensile strength by 32.6 % to 28.48 ± 1.25 MPa and increasing water vapor resistance by 11 % compared to standard PLA/TPS film. The engineered composite films effectively indicated shrimp freshness by transitioning from orange to purple, exhibiting a 117 % higher total color change (ΔE) compared to the unmodified film, reaching 69.54 ± 2.36. This color change demonstrated a strong correlation with shrimp spoilage indices within 24 h of storage at 28 °C.The films demonstrated antibacterial efficacy, with inhibition zones of 16.1 mm and 12.3 mm against L. <em>monocytogenes</em> and <em>E. coli</em>, respectively. CEO's moisture-sensitive release mechanism maintained total viable count (TVC) levels below the 7 log CFU/mL threshold for 15 days under 4 °C storage, extending shrimp shelf life by 10 days compared to control samples.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123320"},"PeriodicalIF":10.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323781","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

Tunable-color chiral liquid crystal film of cellulose nanocrystal with outstanding antibacterial and UV shielding capabilities for multifunction coating applications

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-25 DOI: 10.1016/j.carbpol.2025.123306

Haidong Jin , Guangshi Sun , Qizheng Tang , Shanrong Wang , Shouxin Liu , Qian Cheng , Lijuan Wang , Yu Li

Chiral nematic cellulose crystals (CNCs) have presented broad application prospects in information encryption, sensing and coating field due to their properties of tunable structural color, birefringence and sustainability and renewability. However, the controllable regulation of structural colors and the incorporation of functionalities still pose challenges for practical applications. Herein, we propose a facile method utilizing plant polyphenols to regulate the pitch of chiral nematic liquid crystal films, thereby enabling precise control over the structural color. The influence of varying amounts of tannic acid (TA) incorporation on the structure and optical properties of CNC iridescent films was investigated, and the underlying mechanisms were elucidated. Notably, TA enhances the UV absorption of the composite film, demonstrating nearly complete UVB absorption and partial UVA absorption. Furthermore, the films exhibit potent antibacterial activity against both Gram-positive and Gram-negative bacteria. The incorporation of polyphenol TA not only endows the composite film with outstanding antibacterial and UV-resistant properties but also allows for tuning the structural color of CNC films. The tunable structural color, along with the antibacterial and ultraviolet resistance properties exhibited by CNC-TA chiral cholesteric films, provides new prospects for anti-counterfeiting labels and multifunctional coating applications.

{"title":"Tunable-color chiral liquid crystal film of cellulose nanocrystal with outstanding antibacterial and UV shielding capabilities for multifunction coating applications","authors":"Haidong Jin , Guangshi Sun , Qizheng Tang , Shanrong Wang , Shouxin Liu , Qian Cheng , Lijuan Wang , Yu Li","doi":"10.1016/j.carbpol.2025.123306","DOIUrl":"10.1016/j.carbpol.2025.123306","url":null,"abstract":"<div><div>Chiral nematic cellulose crystals (CNCs) have presented broad application prospects in information encryption, sensing and coating field due to their properties of tunable structural color, birefringence and sustainability and renewability. However, the controllable regulation of structural colors and the incorporation of functionalities still pose challenges for practical applications. Herein, we propose a facile method utilizing plant polyphenols to regulate the pitch of chiral nematic liquid crystal films, thereby enabling precise control over the structural color. The influence of varying amounts of tannic acid (TA) incorporation on the structure and optical properties of CNC iridescent films was investigated, and the underlying mechanisms were elucidated. Notably, TA enhances the UV absorption of the composite film, demonstrating nearly complete UVB absorption and partial UVA absorption. Furthermore, the films exhibit potent antibacterial activity against both Gram-positive and Gram-negative bacteria. The incorporation of polyphenol TA not only endows the composite film with outstanding antibacterial and UV-resistant properties but also allows for tuning the structural color of CNC films. The tunable structural color, along with the antibacterial and ultraviolet resistance properties exhibited by CNC-TA chiral cholesteric films, provides new prospects for anti-counterfeiting labels and multifunctional coating applications.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123306"},"PeriodicalIF":10.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323782","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

Coordinated transcriptional regulation of carbohydrate-related pathways contributes to the difference of starch accumulation between starchy cassava and sugary cassava

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-24 DOI: 10.1016/j.carbpol.2025.123314

Zehong Ding , Lili Fu , Ganlu Chen , Yan Yan , Weiwei Tie , Xianwei Meng , Jinghao Yang , Xianjin Qiu , Jiaming Zhang , Wei Hu

Cassava is a significant starchy root crop providing staple foods for millions of people globally. However, the metabolic differences and regulatory mechanisms underlying starch accumulation remain largely elusive in cassava. In this work, scanning electron microscopy, metabolome, and transcriptome were analyzed in parallel between starchy cassava (SC205) and sugary cassava (SM) during storage root (SR) development. Many carbohydrate-related metabolites (including fructose-6-phosphate and glucose-6-phosphate) were differentially accumulated between SC205 and SM. Further analysis unveiled coordinated metabolomic and transcriptomic changes in sucrose and starch metabolism, glycolysis and TCA cycle, lipid metabolism, and lignin and flavonoid biosynthesis during SR development, but with distinct abundance patterns between SC205 and SM. Specifically, bZIP2 could directly bind to the promoters of APL1, ISA1, and GBSS1 and promote their expression levels in SC205, but these interactions were absent in SM. Transient silencing of APL1, ISA1, or GBSS1 resulted in significant decreases in starch contents. Transient silencing of bZIP2 suppressed the expression of APL1, ISA1, and GBSS1, and accordingly, decreased the starch contents. These results suggest a crucial contribution of coordinated regulation of carbohydrate-related pathways/genes to the difference of starch accumulation between starchy cassava and sugary cassava, providing useful information for starch improvement in the future.

{"title":"Coordinated transcriptional regulation of carbohydrate-related pathways contributes to the difference of starch accumulation between starchy cassava and sugary cassava","authors":"Zehong Ding , Lili Fu , Ganlu Chen , Yan Yan , Weiwei Tie , Xianwei Meng , Jinghao Yang , Xianjin Qiu , Jiaming Zhang , Wei Hu","doi":"10.1016/j.carbpol.2025.123314","DOIUrl":"10.1016/j.carbpol.2025.123314","url":null,"abstract":"<div><div>Cassava is a significant starchy root crop providing staple foods for millions of people globally. However, the metabolic differences and regulatory mechanisms underlying starch accumulation remain largely elusive in cassava. In this work, scanning electron microscopy, metabolome, and transcriptome were analyzed in parallel between starchy cassava (SC205) and sugary cassava (SM) during storage root (SR) development. Many carbohydrate-related metabolites (including fructose-6-phosphate and glucose-6-phosphate) were differentially accumulated between SC205 and SM. Further analysis unveiled coordinated metabolomic and transcriptomic changes in sucrose and starch metabolism, glycolysis and TCA cycle, lipid metabolism, and lignin and flavonoid biosynthesis during SR development, but with distinct abundance patterns between SC205 and SM. Specifically, bZIP2 could directly bind to the promoters of <em>APL1</em>, <em>ISA1</em>, and <em>GBSS1</em> and promote their expression levels in SC205, but these interactions were absent in SM. Transient silencing of <em>APL1</em>, <em>ISA1</em>, or <em>GBSS1</em> resulted in significant decreases in starch contents. Transient silencing of <em>bZIP2</em> suppressed the expression of <em>APL1</em>, <em>ISA1</em>, and <em>GBSS1</em>, and accordingly, decreased the starch contents. These results suggest a crucial contribution of coordinated regulation of carbohydrate-related pathways/genes to the difference of starch accumulation between starchy cassava and sugary cassava, providing useful information for starch improvement in the future.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123314"},"PeriodicalIF":10.7,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323783","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

Corrigendum to “Self-assembling chitosan based injectable and expandable sponge with antimicrobial property for hemostasis and wound healing” [Carbohydr. Polym. 347 (2025) 122699]

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-24 DOI: 10.1016/j.carbpol.2025.123293

Shujun Cao , Peihong Ji , Lili Hao , Chao Sun , Hongli Mao , Zhongwei Gu

引用次数: 0

Multilayer composite films with enhanced electromagnetic interference shielding and thermal management properties based on bamboo cellulose nanofibers

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-23 DOI: 10.1016/j.carbpol.2025.123309

Lujie Wang , Dingfeng Xu , Jinping Zhou

Flexible, lightweight, and versatile materials are key trends for the next generation of electromagnetic interference (EMI) shielding solutions. Conductive polymer composites have garnered significant attention in the field of EMI shielding. In this study, multilayer films consisting of bamboo cellulose nanofibers (BCNF)/silver nanoparticles (AgNPs) and conductive reduced graphene oxide (rGO)/multi-walled carbon nanotubes (MWCNTs) were prepared using a vacuum alternate filtration. Leveraging the inherent reducibility of BCNF, AgNPs were incorporated into the composite films to impart antibacterial properties. Stacking and concentrating rGO/MWCNTs into conductive layer resulted in multilayer films that exhibit excellent EMI shielding and thermal management properties. The composite films exhibited an EMI shielding effectiveness (EMI SE) of 37.59 dB in the X-band, achieving an SE/d (the ratio of SE to thickness) of 729 dB mm⁻¹, effectively attenuating 99.98 % of electromagnetic waves. Thanks to the outstanding electrical conductivity, the composite films exhibited excellent Joule heating performance, reaching a saturation temperature within 10 s. Furthermore, the composite films possess dual heating capabilities and can also be heated through photothermal conversion. This work presents a straightforward and environmentally friendly approach for fabricating multifunctional composite films that integrate both EMI shielding and thermal management, addressing the needs of environmental protection and sustainable development.

{"title":"Multilayer composite films with enhanced electromagnetic interference shielding and thermal management properties based on bamboo cellulose nanofibers","authors":"Lujie Wang , Dingfeng Xu , Jinping Zhou","doi":"10.1016/j.carbpol.2025.123309","DOIUrl":"10.1016/j.carbpol.2025.123309","url":null,"abstract":"<div><div>Flexible, lightweight, and versatile materials are key trends for the next generation of electromagnetic interference (EMI) shielding solutions. Conductive polymer composites have garnered significant attention in the field of EMI shielding. In this study, multilayer films consisting of bamboo cellulose nanofibers (BCNF)/silver nanoparticles (AgNPs) and conductive reduced graphene oxide (rGO)/multi-walled carbon nanotubes (MWCNTs) were prepared using a vacuum alternate filtration. Leveraging the inherent reducibility of BCNF, AgNPs were incorporated into the composite films to impart antibacterial properties. Stacking and concentrating rGO/MWCNTs into conductive layer resulted in multilayer films that exhibit excellent EMI shielding and thermal management properties. The composite films exhibited an EMI shielding effectiveness (EMI SE) of 37.59 dB in the X-band, achieving an SE/<em>d</em> (the ratio of SE to thickness) of 729 dB mm<sup>−1</sup>, effectively attenuating 99.98 % of electromagnetic waves. Thanks to the outstanding electrical conductivity, the composite films exhibited excellent Joule heating performance, reaching a saturation temperature within 10 s. Furthermore, the composite films possess dual heating capabilities and can also be heated through photothermal conversion. This work presents a straightforward and environmentally friendly approach for fabricating multifunctional composite films that integrate both EMI shielding and thermal management, addressing the needs of environmental protection and sustainable development.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123309"},"PeriodicalIF":10.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143357540","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

Development of κ-carrageenan/tourmaline composite for active food packaging applications: Improved mechanical, gas barrier, and antimicrobial

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-23 DOI: 10.1016/j.carbpol.2025.123304

Yujie Gao, Ruili Li, Jinke Wang, Haoxuan Xu, Meiyi Wang, Huashan Wang

In order to solve the environmental pollution problems of traditional food packaging films, a kind of antibacterial packaging film based on κ-carrageenan and tourmaline powder was prepared. The addition of tourmaline powder as an inorganic filler improved the mechanical properties and gas barrier properties of κ-carrageenan films, and tourmaline had the function of spontaneously generating negative ions (NAIs) to give the film the antibacterial effect. With the increase in the amount of tourmaline powder, the water vapor permeability and oxygen permeability decrease, the water contact angle becomes larger, and the thermal degradation temperature increases. When the additional amount of tourmaline powder is 0.75 (%, w/v), the elongation at break and tensile strength can reach 39.356 % and 8.952 MPa. The κ-carrageenan/tourmaline composite film has an inhibitory effect on foodborne S. aureus, the best inhibition rate was obtained at 39.80 %. The weight loss of the figs packaged with this film is reduced, and the decay rate is slower. These results indicated that the κ-carrageenan/tourmaline composite film is promising in the food industry.

{"title":"Development of κ-carrageenan/tourmaline composite for active food packaging applications: Improved mechanical, gas barrier, and antimicrobial","authors":"Yujie Gao, Ruili Li, Jinke Wang, Haoxuan Xu, Meiyi Wang, Huashan Wang","doi":"10.1016/j.carbpol.2025.123304","DOIUrl":"10.1016/j.carbpol.2025.123304","url":null,"abstract":"<div><div>In order to solve the environmental pollution problems of traditional food packaging films, a kind of antibacterial packaging film based on κ-carrageenan and tourmaline powder was prepared. The addition of tourmaline powder as an inorganic filler improved the mechanical properties and gas barrier properties of κ-carrageenan films, and tourmaline had the function of spontaneously generating negative ions (NAIs) to give the film the antibacterial effect. With the increase in the amount of tourmaline powder, the water vapor permeability and oxygen permeability decrease, the water contact angle becomes larger, and the thermal degradation temperature increases. When the additional amount of tourmaline powder is 0.75 (%, <em>w</em>/<em>v</em>), the elongation at break and tensile strength can reach 39.356 % and 8.952 MPa. The κ-carrageenan/tourmaline composite film has an inhibitory effect on foodborne <em>S. aureus</em>, the best inhibition rate was obtained at 39.80 %. The weight loss of the figs packaged with this film is reduced, and the decay rate is slower. These results indicated that the κ-carrageenan/tourmaline composite film is promising in the food industry.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123304"},"PeriodicalIF":10.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323776","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

Electron beam irradiation combined with cold plasma modification of chitosan to enhance physicochemical and functional properties

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-23 DOI: 10.1016/j.carbpol.2025.123308

Haiyu Luo, Danyang Liang, Qing Liu, Li Niu, Khamiddolov Temirlan, Wenhao Li

Chitosan is used in food, medicine, and other fields because of its good biocompatibility, but its solubility restricts its application, and modification treatment can reduce the stability to improve its solubility in different pH solutions. This study investigated the effects of electron beam irradiation (EBI), cold plasma (CP), and their dual modification treatments on the structural, physicochemical, and functional properties of chitosan. The results showed that single EBI, CP treatment, and dual modification treatment did not significantly change the morphological structure of chitosan. Among them, the viscosity and thermal stability of single EBI- and CP-modified chitosan was reduced. Still, the antioxidant and antibacterial properties against Staphylococcus aureus and Escherichia coli were enhanced compared to native chitosan. Meanwhile, the viscosity, molecular weight, and thermal stability of dual-modified treated chitosan were further reduced, and the antioxidant and antibacterial properties were significantly improved compared to EBI and CP modification alone. This study shows that dual modification's effect was better than that of single modification treatment, especially single cold plasma treatment. This will also lead to the diversification of chitosan modification methods and promote its application in various aspects, such as preservation, food additives, functional food ingredients, and packaging materials.

{"title":"Electron beam irradiation combined with cold plasma modification of chitosan to enhance physicochemical and functional properties","authors":"Haiyu Luo, Danyang Liang, Qing Liu, Li Niu, Khamiddolov Temirlan, Wenhao Li","doi":"10.1016/j.carbpol.2025.123308","DOIUrl":"10.1016/j.carbpol.2025.123308","url":null,"abstract":"<div><div>Chitosan is used in food, medicine, and other fields because of its good biocompatibility, but its solubility restricts its application, and modification treatment can reduce the stability to improve its solubility in different pH solutions. This study investigated the effects of electron beam irradiation (EBI), cold plasma (CP), and their dual modification treatments on the structural, physicochemical, and functional properties of chitosan. The results showed that single EBI, CP treatment, and dual modification treatment did not significantly change the morphological structure of chitosan. Among them, the viscosity and thermal stability of single EBI- and CP-modified chitosan was reduced. Still, the antioxidant and antibacterial properties against <em>Staphylococcus aureus</em> and <em>Escherichia coli</em> were enhanced compared to native chitosan. Meanwhile, the viscosity, molecular weight, and thermal stability of dual-modified treated chitosan were further reduced, and the antioxidant and antibacterial properties were significantly improved compared to EBI and CP modification alone. This study shows that dual modification's effect was better than that of single modification treatment, especially single cold plasma treatment. This will also lead to the diversification of chitosan modification methods and promote its application in various aspects, such as preservation, food additives, functional food ingredients, and packaging materials.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123308"},"PeriodicalIF":10.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323793","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

Controlled green heterogenous functionalization of cellulose via strategic reaction system design

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-23 DOI: 10.1016/j.carbpol.2025.123310

Lukas Marcos Celada , Sergey V. Dvinskikh , Peter Olsén

Green chemical modification of cellulose presents a unique chemical challenge, especially from the vantage point of sustainable development that is favored by the use of wood fibers, heterogeneous conditions, and reactants and solvents of biobased relevance. However, heterogeneous conditions imply that cellulose is a supramolecular assembly whose composition and build-up depend on the initial source and pretreatments. Also, understanding reaction outcomes is accompanied by inherently challenging characterization. The key question is how we should design our reaction systems to achieve customizable and green functionalization of cellulose under heterogeneous conditions. To explore this, we selected never-dried high-content cellulose fibers (>96 % cellulose) as the substrate for the modification with three relevant biobased reactants (succinic, maleic, and crotonic anhydride), with BBIL-AcO as a biobased reactivity promoter. The reactions were performed under either high fiber swelling (basic) or low fiber swelling (acidic) heterogeneous conditions, and the outcome was analyzed in detail. The results unravel clear design strategies for controlling the reaction outcome during the green heterogeneous functionalization of cellulose and present clear synthetic strategies for using cellulose as the key substrate in the next generation of fully biobased and green materials.

{"title":"Controlled green heterogenous functionalization of cellulose via strategic reaction system design","authors":"Lukas Marcos Celada , Sergey V. Dvinskikh , Peter Olsén","doi":"10.1016/j.carbpol.2025.123310","DOIUrl":"10.1016/j.carbpol.2025.123310","url":null,"abstract":"<div><div>Green chemical modification of cellulose presents a unique chemical challenge, especially from the vantage point of sustainable development that is favored by the use of wood fibers, heterogeneous conditions, and reactants and solvents of biobased relevance. However, heterogeneous conditions imply that cellulose is a supramolecular assembly whose composition and build-up depend on the initial source and pretreatments. Also, understanding reaction outcomes is accompanied by inherently challenging characterization. The key question is how we should design our reaction systems to achieve customizable and green functionalization of cellulose under heterogeneous conditions. To explore this, we selected never-dried high-content cellulose fibers (>96 % cellulose) as the substrate for the modification with three relevant biobased reactants (succinic, maleic, and crotonic anhydride), with BBIL-AcO as a biobased reactivity promoter. The reactions were performed under either high fiber swelling (basic) or low fiber swelling (acidic) heterogeneous conditions, and the outcome was analyzed in detail. The results unravel clear design strategies for controlling the reaction outcome during the green heterogeneous functionalization of cellulose and present clear synthetic strategies for using cellulose as the key substrate in the next generation of fully biobased and green materials.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123310"},"PeriodicalIF":10.7,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143357539","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

Chlorogenic acid-assisted dopamine‑sodium alginate composite nanofiber membranes for promoting wound healing

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-23 DOI: 10.1016/j.carbpol.2025.123298

Meng Zhang , Yinchuan Wang , Xueling Yin , Mei Xue , Xin Zhao , Runxiao Zheng , Jianfeng Qiu , Zhihong Zhu

Developing safe and effective novel wound dressings to enhance full-thickness skin wound regeneration is highly desirable. In this study, we firstly incorporated chlorogenic acid (CA) into dopamine (DA) functionalized alginate (Alg-DA) conjugates and utilized polyvinyl alcohol (PVA) as the carrier polymer to fabricate a series of novel multifunctional composite nanofiber membranes (PVA/Alg-DA/CA) for promoting wound healing. These nanofiber membranes exhibited high water absorption, water vapor transmission rate, porosity, and hydrophilicity properties. The CA endowed the PVA/Alg-DA/CA membranes with excellent antibacterial properties, and the superior antioxidant activity to effectively protect cells from oxidative damage. Meanwhile, capitalizing on the unique nanofiber architecture, as well as the inherent biofunctional activities of CA and Alg-DA, these membranes exhibited remarkable biocompatibility, fostering a conducive environment for fibroblast adhesion and proliferation. Moreover, wound healing assessments and histopathological analyses revealed that composite membranes could promote neovascularization and tissue remodeling, and thus accelerating wound closure in the mouse full-thickness wound defect model. Additionally, the upregulation of key healing markers including CD31 and TGF-β1 protein expressions, further corroborated the ability of multifunctional membrane to stimulate the wound healing cascade. This multifunctional membranes with biosafety and therapeutic outcomes are a promising candidate for wound dressing to promote skin repair.

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