Carbohydrate Polymers最新文献

英文中文

Chitosan-based Pickering double emulsion microcapsules improve the UV stability and the persistence of Bacillus thuringiensis on mosquito control

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-02-03 DOI: 10.1016/j.carbpol.2025.123346

Haonan Wu , Xi Du , Xueping Guo , Jinghong Cai , Hong Chen , Caixia Chen , Yuying Shi , Yile Zhang , Xiaohong Pan , Xiong Guan , Lingling Zhang

Bacillus thuringiensis (Bt) is affected by ultraviolet radiation and bacterial sedimentation in pest control applications, leading to low pesticide utilization and a short duration of control. To improve Bt stability in these applications and prolong the duration of biological control, Bt LLP29 was first encapsulated using double emulsion technology, resulting in the formation of W₁/O/W₂ double emulsion microcapsules with sodium lignosulfonate and chitosan as wall materials. The morphological structure and functionality of microcapsules were then systematically investigated. Notably, the survival rates of Bt bacteria and spores in the microcapsules were maintained at 22.98 % and 8.18 % after 96 h of UV irradiation, and the retention rate of insecticidal protein was increased by 41.42 % after 72 h, with high mosquito-killing activity maintained. Furthermore, the Bt microcapsules exhibited excellent suspension properties and sustained release capabilities, which enhanced the retention of Bt active ingredients in the environment of young mosquitoes and extended the duration of pest control. These studies pioneered the application of double emulsion technology and microcapsules to the encapsulation of Bt based on the functional properties of chitosan. This will pave the way for the development of multifunctional Bt preparations in agricultural applications and pest control.

{"title":"Chitosan-based Pickering double emulsion microcapsules improve the UV stability and the persistence of Bacillus thuringiensis on mosquito control","authors":"Haonan Wu , Xi Du , Xueping Guo , Jinghong Cai , Hong Chen , Caixia Chen , Yuying Shi , Yile Zhang , Xiaohong Pan , Xiong Guan , Lingling Zhang","doi":"10.1016/j.carbpol.2025.123346","DOIUrl":"10.1016/j.carbpol.2025.123346","url":null,"abstract":"<div><div><em>Bacillus thuringiensis</em> (Bt) is affected by ultraviolet radiation and bacterial sedimentation in pest control applications, leading to low pesticide utilization and a short duration of control. To improve Bt stability in these applications and prolong the duration of biological control, Bt LLP29 was first encapsulated using double emulsion technology, resulting in the formation of W<sub>1</sub>/O/W<sub>2</sub> double emulsion microcapsules with sodium lignosulfonate and chitosan as wall materials. The morphological structure and functionality of microcapsules were then systematically investigated. Notably, the survival rates of Bt bacteria and spores in the microcapsules were maintained at 22.98 % and 8.18 % after 96 h of UV irradiation, and the retention rate of insecticidal protein was increased by 41.42 % after 72 h, with high mosquito-killing activity maintained. Furthermore, the Bt microcapsules exhibited excellent suspension properties and sustained release capabilities, which enhanced the retention of Bt active ingredients in the environment of young mosquitoes and extended the duration of pest control. These studies pioneered the application of double emulsion technology and microcapsules to the encapsulation of Bt based on the functional properties of chitosan. This will pave the way for the development of multifunctional Bt preparations in agricultural applications and pest control.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123346"},"PeriodicalIF":10.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143356766","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 “Dissecting the Enterococcal Polysaccharide Antigen (EPA) structure to explore innate immune evasion and phage specificity” [Carbohydr. Polym. 347 (1 January 2025) 122686] “解剖肠球菌多糖抗原（EPA）结构以探索先天免疫逃避和噬菌体特异性”的勘误表[碳水化合物]。Polym. 347 (1 January 2025) 122686]。

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-02-01 DOI: 10.1016/j.carbpol.2024.122983

Jessica L. Davis , Joshua S. Norwood , Robert E. Smith , Finn O'Dea , Krishna Chellappa , Michelle L. Rowe , Mike P. Williamson , Graham P. Stafford , Evguenii Vinogradov , Emmanuel Maes , Yann Guérardel , Stéphane Mesnage

引用次数: 0

Rational design of antifreeze and flexible chitosan-based hydrogels for integration device of supercapacitors electrodes and wearable strain sensors

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-02-01 DOI: 10.1016/j.carbpol.2025.123342

Xinquan Zou , Hongyuan Liu , Zhenyan Hu , Yi Zhang , Jinggang Cheng , Kun Wang , Yuwei Feng , Jikui Wang

Hydrogels with excellent flexibility are widely used in flexible sensors and supercapacitors, but their sensitivity and operating temperature range limit their application. In this study, chitosan (CS)/polyaniline (PANI) hydrogel with interpenetrating network structure is designed, in which phytic acid is used as crosslinking agent and antifreeze. The obtained CS/PANI hydrogel exhibits excellent mechanical properties, excellent sensing performance (Gauge Factor = 5.25), fast electrochemical response, high specific capacitance (383.7 F/g at 0.5 A/g) and good cycle stability, which may be due to the interpenetrating network structure formed between phytic acid cross-linked PANI and CS molecular chains. Due to these properties, CS/PANI hydrogels can be used as flexible sensors and supercapacitor electrodes materials. Because of the electrostatic interaction between the anionic and cationic groups in phytic acid, it also has certain frost resistance. The CS/PANI hydrogel can provide a high specific capacitance of 330 F/g at −40 °C. Compared with room temperature, the capacitance retention rate is as high as 87 %. It is believed that this CS/PANI hydrogel will be used as a new multifunctional material in many fields such as flexible electrodes, sensors and wearable devices in low temperature environments.

{"title":"Rational design of antifreeze and flexible chitosan-based hydrogels for integration device of supercapacitors electrodes and wearable strain sensors","authors":"Xinquan Zou , Hongyuan Liu , Zhenyan Hu , Yi Zhang , Jinggang Cheng , Kun Wang , Yuwei Feng , Jikui Wang","doi":"10.1016/j.carbpol.2025.123342","DOIUrl":"10.1016/j.carbpol.2025.123342","url":null,"abstract":"<div><div>Hydrogels with excellent flexibility are widely used in flexible sensors and supercapacitors, but their sensitivity and operating temperature range limit their application. In this study, chitosan (CS)/polyaniline (PANI) hydrogel with interpenetrating network structure is designed, in which phytic acid is used as crosslinking agent and antifreeze. The obtained CS/PANI hydrogel exhibits excellent mechanical properties, excellent sensing performance (Gauge Factor = 5.25), fast electrochemical response, high specific capacitance (383.7 F/g at 0.5 A/g) and good cycle stability, which may be due to the interpenetrating network structure formed between phytic acid cross-linked PANI and CS molecular chains. Due to these properties, CS/PANI hydrogels can be used as flexible sensors and supercapacitor electrodes materials. Because of the electrostatic interaction between the anionic and cationic groups in phytic acid, it also has certain frost resistance. The CS/PANI hydrogel can provide a high specific capacitance of 330 F/g at −40 °C. Compared with room temperature, the capacitance retention rate is as high as 87 %. It is believed that this CS/PANI hydrogel will be used as a new multifunctional material in many fields such as flexible electrodes, sensors and wearable devices in low temperature environments.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123342"},"PeriodicalIF":10.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323896","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

Multivariate optimization of ulvan extraction applying Response Surface Methodology (RSM): the case of Ulva lactuca L. from Orbetello lagoon

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-31 DOI: 10.1016/j.carbpol.2025.123340

Beatrice Zonfrillo , Maria Bellumori , Irene Digiglio , Marzia Innocenti , Serena Orlandini , Sandra Furlanetto , Mohamad Khatib , Alessio Papini , Federica Mainente , Gianni Zoccatelli , Nadia Mulinacci

The polysaccharide ulvan has great potential for various industrial applications due to its unique composition and biochemical properties. The study aimed to optimize the extraction conditions (pH, extraction time, and Extractant/Solid (E/S) ratio) of ulvan employing Ulva lactuca samples collected in the Orbetello lagoon, Tuscany (Italy), using a Design of Experiments (DoE) approach. The extraction process was optimized through a screening phase followed by Response Surface Methodology (RSM) to maximize ulvan yield and selectivity of the extraction. The purified extracts were characterized by quantitative NMR for rhamnose (Rha) content, turbidimetric assay for sulfate content, and HPAEC-PAD for monosaccharide composition. The results indicated that a low pH value of 2.0, an extraction time of 105 min, and a high E/S ratio (60:1 mL/g) favored higher purity and yield of ulvan. Ulvan extracted under optimized conditions (9.27 % yield, 27.8 % Rha, and 20 % sulfate content) was further characterized by 2D NMR experiments and size exclusion chromatography. This optimized extraction method provides a basis for further exploration of ulvan's potential in food, pharmaceutical, and biotechnological applications.

{"title":"Multivariate optimization of ulvan extraction applying Response Surface Methodology (RSM): the case of Ulva lactuca L. from Orbetello lagoon","authors":"Beatrice Zonfrillo , Maria Bellumori , Irene Digiglio , Marzia Innocenti , Serena Orlandini , Sandra Furlanetto , Mohamad Khatib , Alessio Papini , Federica Mainente , Gianni Zoccatelli , Nadia Mulinacci","doi":"10.1016/j.carbpol.2025.123340","DOIUrl":"10.1016/j.carbpol.2025.123340","url":null,"abstract":"<div><div>The polysaccharide ulvan has great potential for various industrial applications due to its unique composition and biochemical properties. The study aimed to optimize the extraction conditions (pH, extraction time, and Extractant/Solid (E/S) ratio) of ulvan employing <em>Ulva lactuca</em> samples collected in the Orbetello lagoon, Tuscany (Italy), using a Design of Experiments (DoE) approach. The extraction process was optimized through a screening phase followed by Response Surface Methodology (RSM) to maximize ulvan yield and selectivity of the extraction. The purified extracts were characterized by quantitative NMR for rhamnose (Rha) content, turbidimetric assay for sulfate content, and HPAEC-PAD for monosaccharide composition. The results indicated that a low pH value of 2.0, an extraction time of 105 min, and a high E/S ratio (60:1 mL/g) favored higher purity and yield of ulvan. Ulvan extracted under optimized conditions (9.27 % yield, 27.8 % Rha, and 20 % sulfate content) was further characterized by 2D NMR experiments and size exclusion chromatography. This optimized extraction method provides a basis for further exploration of ulvan's potential in food, pharmaceutical, and biotechnological applications.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123340"},"PeriodicalIF":10.7,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323872","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

Design and evaluation of a supramolecular boron compound using a cyclodextrin-based polyrotaxane for boron neutron capture therapy

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-31 DOI: 10.1016/j.carbpol.2025.123343

Yoshitaka Matsumoto , Haruki Arase , Honatsu Ishiki , Haru Takeuchi , Yu Sugawara , Toru Taharabaru , Risako Onodera , Minoru Suzuki , Ami Nakaie , Hideyuki Sakurai , Keiichi Motoyama , Taishi Higashi

Boron neutron capture therapy (BNCT) has recently attracted attention as a new cancer treatment option. In BNCT, boron compounds need to accumulate efficiently in tumor tissues to achieve excellent therapeutic effects. Therefore, it is highly desirable to develop a technology that can selectively and efficiently deliver boron compounds to tumors. In this study, we developed a novel fluorophenyl boronic acid (FPBA)-modified polyrotaxane (FPBA-PRX) and evaluated its potential as a tumor-selective boron compound for BNCT. FPBA-PRX is taken up by tumor cells through the binding between the FPBA moiety of FPBA-PRX and sialic acid on tumor cells. Importantly, the cellular uptake of FPBA-PRX was markedly higher than that of FPBA-modified cellulose (FPBA-CEL) because the FPBA moiety in FPBA-PRX was movable along with the axial chain of PRX, thereby avoiding a spatial mismatch between FPBA and sialic acid in tumor cells. Moreover, the accumulation of FPBA-PRX in the tumors after intravenous administration in mice was higher than that of FPBA-CEL. Furthermore, in vivo antitumor activity of FPBA-PRX was stronger than that of FPBA alone or commercially available boron compounds. These findings indicate the potential of FPBA-PRX as a tumor-selective boron compound for BNCT.

{"title":"Design and evaluation of a supramolecular boron compound using a cyclodextrin-based polyrotaxane for boron neutron capture therapy","authors":"Yoshitaka Matsumoto , Haruki Arase , Honatsu Ishiki , Haru Takeuchi , Yu Sugawara , Toru Taharabaru , Risako Onodera , Minoru Suzuki , Ami Nakaie , Hideyuki Sakurai , Keiichi Motoyama , Taishi Higashi","doi":"10.1016/j.carbpol.2025.123343","DOIUrl":"10.1016/j.carbpol.2025.123343","url":null,"abstract":"<div><div>Boron neutron capture therapy (BNCT) has recently attracted attention as a new cancer treatment option. In BNCT, boron compounds need to accumulate efficiently in tumor tissues to achieve excellent therapeutic effects. Therefore, it is highly desirable to develop a technology that can selectively and efficiently deliver boron compounds to tumors. In this study, we developed a novel fluorophenyl boronic acid (FPBA)-modified polyrotaxane (FPBA-PRX) and evaluated its potential as a tumor-selective boron compound for BNCT. FPBA-PRX is taken up by tumor cells through the binding between the FPBA moiety of FPBA-PRX and sialic acid on tumor cells. Importantly, the cellular uptake of FPBA-PRX was markedly higher than that of FPBA-modified cellulose (FPBA-CEL) because the FPBA moiety in FPBA-PRX was movable along with the axial chain of PRX, thereby avoiding a spatial mismatch between FPBA and sialic acid in tumor cells. Moreover, the accumulation of FPBA-PRX in the tumors after intravenous administration in mice was higher than that of FPBA-CEL. Furthermore, <em>in vivo</em> antitumor activity of FPBA-PRX was stronger than that of FPBA alone or commercially available boron compounds. These findings indicate the potential of FPBA-PRX as a tumor-selective boron compound for BNCT.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123343"},"PeriodicalIF":10.7,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323937","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

Initiatorless polymerization of mechanically robust hydrogels reinforced by cellulose of wood skeleton as multifunctional sensors

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-31 DOI: 10.1016/j.carbpol.2025.123345

Luzhen Wang , Jing Wei , Muqiu You , Yongcan Jin , Dagang Li , Zhaoyang Xu , Aiping Yu , Junshuai Li , Chuchu Chen

Wood-based hydrogel with a unique anisotropic structure is an attractive soft-and-wet material. However, it remains a challenge to simultaneously achieve robust, multi-functional, and multi-response integrations through a sustainable and green approach. Herein, a bioinspired, additive-free method is reported to fabricate composite hydrogels reinforced by naturally high-strength wood skeleton without using any chemical initiators and crosslinking agents. Specifically, polymers (Polyacrylamide/Polyacrylic acid) are grafted from the surfaces of the aligned cellulose of wood skeleton, forming wood-based hydrogels under UV irradiation. Afterward, Fe³⁺-mediated physical crosslinking is employed further to construct chemically crosslinked poly(acrylamide-co-acrylic acid) networks. Therefore, the resulting initiatorless wood-based hydrogel with a dual-crosslinked network structure exhibits an ultra-high tensile strength of 42 MPa along the longitudinal direction, representing one of the strongest hydrogels ever reported. Furthermore, the wood-based hydrogels with inherent conductive properties appealing versatile sensations on strain, temperature, and light, which could serve as human-motion monitors (detection), thermo-electrochemical sensors, underwater wearable sensors, and smart-home systems. This work offers a green and promising strategy to fabricate robust, anisotropic, flexible, and ionically conductive wood-based hydrogels for multifunctional sensors with excellent performance in complex environments.

{"title":"Initiatorless polymerization of mechanically robust hydrogels reinforced by cellulose of wood skeleton as multifunctional sensors","authors":"Luzhen Wang , Jing Wei , Muqiu You , Yongcan Jin , Dagang Li , Zhaoyang Xu , Aiping Yu , Junshuai Li , Chuchu Chen","doi":"10.1016/j.carbpol.2025.123345","DOIUrl":"10.1016/j.carbpol.2025.123345","url":null,"abstract":"<div><div>Wood-based hydrogel with a unique anisotropic structure is an attractive soft-and-wet material. However, it remains a challenge to simultaneously achieve robust, multi-functional, and multi-response integrations through a sustainable and green approach. Herein, a bioinspired, additive-free method is reported to fabricate composite hydrogels reinforced by naturally high-strength wood skeleton without using any chemical initiators and crosslinking agents. Specifically, polymers (Polyacrylamide/Polyacrylic acid) are grafted from the surfaces of the aligned cellulose of wood skeleton, forming wood-based hydrogels under UV irradiation. Afterward, Fe<sup>3+</sup>-mediated physical crosslinking is employed further to construct chemically crosslinked poly(acrylamide-<em>co</em>-acrylic acid) networks. Therefore, the resulting initiatorless wood-based hydrogel with a dual-crosslinked network structure exhibits an ultra-high tensile strength of 42 MPa along the longitudinal direction, representing one of the strongest hydrogels ever reported. Furthermore, the wood-based hydrogels with inherent conductive properties appealing versatile sensations on strain, temperature, and light, which could serve as human-motion monitors (detection), thermo-electrochemical sensors, underwater wearable sensors, and smart-home systems. This work offers a green and promising strategy to fabricate robust, anisotropic, flexible, and ionically conductive wood-based hydrogels for multifunctional sensors with excellent performance in complex environments.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123345"},"PeriodicalIF":10.7,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323895","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

Bioadhesive levan-based coaxial nanofibrous membranes with enhanced cell adhesion and mesenchymal stem cell differentiation

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-30 DOI: 10.1016/j.carbpol.2025.123337

Eunhyun Ji , Young Hoon Song , Jae Kyeong Lee , Yesol Kim , Eunji Lee , Kye Il Joo , Jeong Hyun Seo

Conventional electrospun nanofibrous membranes have been widely used for tissue engineering scaffolds because they can mimic extracellular matrix (ECM), which plays a significant role in cell proliferation, adhesion, and differentiation. However, the inadequate mechanical strength and biological functions of electrospun nanofibrous scaffolds limit the range of their practical applications. In this study, we prepared a uniform levan-based core–shell composite (csCAL) nanofibrous membrane using the coaxial electrospinning technique. The coaxial csCAL membrane with levan and cellulose acetate (CA) as shell and core, respectively, exhibited highly enhanced mechanical properties and adhesive strength. Moreover, the unique bioadhesive nature of these membranes significantly enhanced cell attachment and proliferation, while their high biocompatibility and biodegradability hold substantial promise for application as functional cell carriers. Upon incorporating mesenchymal stem cells (MSCs) into the csCAL nanofibrous membrane, we observed enhanced osteogenesis and chondrogenesis, as evidenced by alizarin red and alcian blue staining, respectively. These results indicate that the levan-based nanofiber architecture has the potential to deliver scaffolds for supporting the differentiation of MSCs.

{"title":"Bioadhesive levan-based coaxial nanofibrous membranes with enhanced cell adhesion and mesenchymal stem cell differentiation","authors":"Eunhyun Ji , Young Hoon Song , Jae Kyeong Lee , Yesol Kim , Eunji Lee , Kye Il Joo , Jeong Hyun Seo","doi":"10.1016/j.carbpol.2025.123337","DOIUrl":"10.1016/j.carbpol.2025.123337","url":null,"abstract":"<div><div>Conventional electrospun nanofibrous membranes have been widely used for tissue engineering scaffolds because they can mimic extracellular matrix (ECM), which plays a significant role in cell proliferation, adhesion, and differentiation. However, the inadequate mechanical strength and biological functions of electrospun nanofibrous scaffolds limit the range of their practical applications. In this study, we prepared a uniform levan-based core–shell composite (csCAL) nanofibrous membrane using the coaxial electrospinning technique. The coaxial csCAL membrane with levan and cellulose acetate (CA) as shell and core, respectively, exhibited highly enhanced mechanical properties and adhesive strength. Moreover, the unique bioadhesive nature of these membranes significantly enhanced cell attachment and proliferation, while their high biocompatibility and biodegradability hold substantial promise for application as functional cell carriers. Upon incorporating mesenchymal stem cells (MSCs) into the csCAL nanofibrous membrane, we observed enhanced osteogenesis and chondrogenesis, as evidenced by alizarin red and alcian blue staining, respectively. These results indicate that the levan-based nanofiber architecture has the potential to deliver scaffolds for supporting the differentiation of MSCs.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123337"},"PeriodicalIF":10.7,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143323871","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

Targeted isolation of cellulose nanofibers of specific length distributions from potato residue

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-29 DOI: 10.1016/j.carbpol.2025.123315

Yingfeng Wang , Timo Pääkkönen , Laleh Solhi , Neptun Yousefi , Eero Kontturi

Recently, cellulose nanofibers (CNFs) have attracted attention because of their potential as building blocks in materials science. Their production, however, is often seen as inefficient and the tuning of their properties is not straightforward. Contrary to exploiting costly and environmentally taxing delignified wood pulp as a raw material, this study demonstrates CNF production using agricultural waste: potato fibers. The process for obtaining typical long (μm scale) CNFs involved alkali treatment, NaClO₂ addition, and gaseous HCl hydrolysis, while TEMPO-mediated oxidation enabled tuning of the CNF length to much shorter (∼500 nm) nanofibres with substantial carboxylate content (1.0 mmol/g). Subsequent film preparation demonstrated that even short CNFs could form strong transparent films (nanopapers). These findings provide a foundational understanding of the practical implementation of cellulose gaseous HCl hydrolysis and TEMPO-mediated oxidation techniques, extending from the potato fiber industry to nanocellulose applications.

{"title":"Targeted isolation of cellulose nanofibers of specific length distributions from potato residue","authors":"Yingfeng Wang , Timo Pääkkönen , Laleh Solhi , Neptun Yousefi , Eero Kontturi","doi":"10.1016/j.carbpol.2025.123315","DOIUrl":"10.1016/j.carbpol.2025.123315","url":null,"abstract":"<div><div>Recently, cellulose nanofibers (CNFs) have attracted attention because of their potential as building blocks in materials science. Their production, however, is often seen as inefficient and the tuning of their properties is not straightforward. Contrary to exploiting costly and environmentally taxing delignified wood pulp as a raw material, this study demonstrates CNF production using agricultural waste: potato fibers. The process for obtaining typical long (μm scale) CNFs involved alkali treatment, NaClO<sub>2</sub> addition, and gaseous HCl hydrolysis, while TEMPO-mediated oxidation enabled tuning of the CNF length to much shorter (∼500 nm) nanofibres with substantial carboxylate content (1.0 mmol/g). Subsequent film preparation demonstrated that even short CNFs could form strong transparent films (nanopapers). These findings provide a foundational understanding of the practical implementation of cellulose gaseous HCl hydrolysis and TEMPO-mediated oxidation techniques, extending from the potato fiber industry to nanocellulose applications.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123315"},"PeriodicalIF":10.7,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143357371","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

siRNA self-assembled carboxymethyl chitosan and pymetrozine nucleic pesticides for enhanced control of Sogatella furcifera: Bidirectional transduction and detoxification inhibition

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-28 DOI: 10.1016/j.carbpol.2025.123328

Changwei Gong , Wei Wang , Yanxin Ma , Xiaoxu Zhan , Anchun Peng , Jian Pu , Jizhi Yang , Xiangyang Yuan , Xuegui Wang

Sogatella furcifera (Horváth) is a significant migratory pest in southeast Asia and northern Australia, exhibiting a notable resistance to the conventional insecticides, and RNAi pesticide is a promising approach for managing resistance. However, the poor stability and difficulty in delivery hinders its wide application. Here, we present a self-assembled siRNAs, carboxymethyl chitosan (CMCS) and pymetrozine complex (abbreviated as PM-CMCS/siRNAs micro-complex) to facilitate the control of S. furcifera in rice. When the transcription factors USP and KrH1 were interfered with dsUSP or dsKr-H1, a mortality of 84.4 % ~ 88.9 % was observed at a concentration of 150 μg/mL of pymetrozine, indicating a potential strategy for managing pymetrozine resistance. With the envelope of CMCS, the micro-complex effectively enhances the siRNA stability >96 h, downregulates the expression of USP, KrH1, and CYP6FJ3, leading to a mortality of 100 % at 100 μg/mL pymetrozine. Moreover, the time-dependent disintegration of micro-complex induces the release of lesser PM-CMCS/siRNAs, allowing that more fluorescently labeled complexes were enriched in the phloem of rice via the apoplastic pathway. The integration of PM-CMCS/siRNAs enable precise enrichment in phloem and effective management of pest resistance by silencing their detoxification genes, and promises an environmental-friendly strategy for controlling devastating pest.

{"title":"siRNA self-assembled carboxymethyl chitosan and pymetrozine nucleic pesticides for enhanced control of Sogatella furcifera: Bidirectional transduction and detoxification inhibition","authors":"Changwei Gong , Wei Wang , Yanxin Ma , Xiaoxu Zhan , Anchun Peng , Jian Pu , Jizhi Yang , Xiangyang Yuan , Xuegui Wang","doi":"10.1016/j.carbpol.2025.123328","DOIUrl":"10.1016/j.carbpol.2025.123328","url":null,"abstract":"<div><div><em>Sogatella furcifera</em> (Horváth) is a significant migratory pest in southeast Asia and northern Australia, exhibiting a notable resistance to the conventional insecticides, and RNAi pesticide is a promising approach for managing resistance. However, the poor stability and difficulty in delivery hinders its wide application. Here, we present a self-assembled siRNAs, carboxymethyl chitosan (CMCS) and pymetrozine complex (abbreviated as PM-CMCS/siRNAs micro-complex) to facilitate the control of <em>S. furcifera</em> in rice. When the transcription factors <em>USP</em> and <em>Kr<img>H1</em> were interfered with dsUSP or dsKr-H1, a mortality of 84.4 % ~ 88.9 % was observed at a concentration of 150 μg/mL of pymetrozine, indicating a potential strategy for managing pymetrozine resistance. With the envelope of CMCS, the micro-complex effectively enhances the siRNA stability >96 h, downregulates the expression of <em>USP</em>, <em>Kr<img>H1</em>, and <em>CYP6FJ3</em>, leading to a mortality of 100 % at 100 μg/mL pymetrozine. Moreover, the time-dependent disintegration of micro-complex induces the release of lesser PM-CMCS/siRNAs, allowing that more fluorescently labeled complexes were enriched in the phloem of rice via the apoplastic pathway. The integration of PM-CMCS/siRNAs enable precise enrichment in phloem and effective management of pest resistance by silencing their detoxification genes, and promises an environmental-friendly strategy for controlling devastating pest.</div></div>","PeriodicalId":261,"journal":{"name":"Carbohydrate Polymers","volume":"354 ","pages":"Article 123328"},"PeriodicalIF":10.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143324031","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

Preparation and applications of magnetic nanocellulose composites: A review

IF 10.7 1区化学 Q1 CHEMISTRY, APPLIED

Carbohydrate Polymers

Pub Date : 2025-01-28 DOI: 10.1016/j.carbpol.2025.123317

Chen Yang , Gaigai Duan , Chunmei Zhang , Yong Huang , Shanshan Li , Shaohua Jiang

Cellulose is the most abundant biomass material in the world. Magnetic nanoparticles can be used as reinforcing materials to give cellulose more functions due to their unique magnetism. According to the dispersion stability of nanocellulose, magnetic nanocellulose is divided into homogeneous preparation and heterogeneous preparation. In addition, the directional arrangement of nanocellulose by external magnetic field is also a way of cellulose functionalization. The current preparation of magnetic nanocellulose is mainly based on heterogeneous preparation. Magnetic nanofiber cellulose has great application potential in the field of biomedicine and sewage purification due to its special magnetic properties. It can also be applied to sensors, food packaging and other fields. In this paper, the preparation methods of magnetic nanocellulose and its physical magnetism are introduced. Then, the application of magnetic nanocellulose in different fields is reviewed. Finally, the current challenges of magnetic nanocellulose are summarized and the future development trend is prospected.

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引用次数: 0

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