journal
https://read.qxmd.com/read/38763731/a-macromolecular-cross-linked-alginate-aerogel-with-excellent-concentrating-effect-for-rapid-hemostasis
#1
JOURNAL ARTICLE
Huanxuan Huang, Shiyang Liao, Dong Zhang, Wencheng Liang, Keqing Xu, Yadong Zhang, Meidong Lang
Alginate-based materials present promising potential for emergency hemostasis due to their excellent properties, such as procoagulant capability, biocompatibility, low immunogenicity, and cost-effectiveness. However, the inherent deficiencies in water solubility and mechanical strength pose a threat to hemostatic efficiency. Here, we innovatively developed a macromolecular cross-linked alginate aerogel based on norbornene- and thiol-functionalized alginates through a combined thiol-ene cross-linking/freeze-drying process...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763730/carboxymethyl-chitosan-and-dialdehyde-cellulose-nanocrystal-based-injectable-self-healing-emulsion-gel
#2
JOURNAL ARTICLE
Xiaoshun Zhou, Baoyi Zhang, Weijuan Huang
The study aims to demonstrate a general method for producing emulsion gels with self-healing properties. Specifically, the self-healing emulsion gels were fabricated by crosslinking carboxymethyl chitosan (CMC) stabilized emulsion with dialdehyde cellulose nanocrystal (DACNC). The reversible imine bonds between primary amino groups from CMC and aldehyde groups from DACNC endow the emulsion gel with self-healing properties. The compressive strength of the emulsion gels was greatly increased from 37.43 kPa 83...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763729/effect-of-amylose-partial-extraction-on-citrate-esterification-of-potato-starch-and-its-role-in-structure-and-physicochemical-modification
#3
JOURNAL ARTICLE
Danyang Liang, Haiyu Luo, Zhuangzhuang Sun, Qing Liu, Lipin Zhao, Wenhao Li
This study examines the impact and influence of amylose on the starch esterification reaction through partial extraction of amylose. Citric acid was added for the esterification reaction, and then the esterified starches' multiscale structure, physicochemical, and functional properties were evaluated. As the extraction time of amylose increased, the amylose content in the starch decreased. Higher concentrations of citric acid will lead to samples with a higher degree of substitution, with DS rising from 0.203 % (0 h) to 0...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763728/fusion-of-cellulose-microspheres-with-pulp-fibers-creating-an-unconventional-type-of-paper
#4
JOURNAL ARTICLE
Alexa Scheer, Johanna Fischer, Adelheid Bakhshi, Wolfgang Bauer, Steffen Fischer, Stefan Spirk
Cellulose microspheres (CMS) are a type of spherical regenerated cellulose particles with versatile properties which have been used as carrier materials in medical and technical applications. The integration of CMS into paper products opens up novel application scenarios for paper products in a wide range of fields. However, the incorporation of CMS carriers into paper products is challenging and hitherto no reports do exist in literature. Here, we present a feasibility study to incorporate up to 50 w.% CMS in paper hand sheets using retention aids...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763727/multi-strategy-dynamic-cross-linking-to-prepare-egcg-loaded-multifunctional-pickering-emulsion-%C3%AE-cyclodextrin-konjac-glucomannan-composite-films-for-ultra-durable-preservation-of-perishable-fruits
#5
JOURNAL ARTICLE
Hongcai Li, Weiteng Tan, Mengxin Hou, Shuang Yang, Caiyun Liu, Mengzhen Han, Jingjing Liang, Zhenpeng Gao
Developing multifunctional films with antibacterial, antioxidant, and sustained-release properties is a robust strategy for preventing contamination of perishable fruits by foodborne microorganisms. This study engineered a sustained-release biodegradable antibacterial film loaded with EGCG (Pickering emulsion (PE)/α-Cyclodextrin (α-CD)/Konjac glucomannan (KGM)) through multi-strategy cross-linking for fruit preservation. EGCG is stabilized using PE and incorporated into the α-CD/KGM inclusion compound; the unique structure of α-CD enhances EGCG encapsulation, while KGM provides the film toughness and surface adhesion...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763726/the-%C3%AE-linkage-in-funoran-and-agarose-could-be-hydrolyzed-by-a-gh96-family-enzyme-discovery-of-the-%C3%AE-funoranase
#6
JOURNAL ARTICLE
Yuying Zhang, Long Zheng, Guanchen Liu, Jingjing Shen, Guangning Chen, Xuanwei Mei, Yaoguang Chang, Changhu Xue
Agarans represent a group of galactans extracted from red algae. Funoran and agarose are the two major types and commercially applied polysaccharides of agaran. Although the glycoside hydrolases targeting β-glycosidic bonds of agaran have been widely investigated, those capable of degrading α-glycosidic bonds of agarose were limited, and the enzyme degrading α-linkages of funoran has not been reported till now. In this study, a GH96 family enzyme BiAF96A_Aq from a marine bacterium Aquimarina sp...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763725/deep-eutectic-solvents-as-sustainable-extraction-media-for-extraction-of-polysaccharides-from-natural-sources-status-challenges-and-prospects
#7
REVIEW
Noorfatimah Yahaya, Ahmad Husaini Mohamed, Muhammad Sajid, Nur Nadhirah Mohamad Zain, Pao-Chi Liao, Kit Wayne Chew
Deep eutectic solvents (DES) emerge as promising alternatives to conventional solvents, offering outstanding extraction capabilities, low toxicity, eco-friendliness, straightforward synthesis procedures, broad applicability, and impressive recyclability. DES are synthesized by combining two or more components through various synthesis procedures, such as heat-assisted mixing/stirring, grinding, freeze drying, and evaporation. Polysaccharides, as abundant natural materials, are highly valued for their biocompatibility, biodegradability, and sustainability...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763724/chitosan-based-aerogels-a-new-paradigm-of-advanced-green-materials-for-remediation-of-contaminated-water
#8
REVIEW
Joyel Paul, Ahsan Qamar, Sandeep S Ahankari, Sabu Thomas, Alain Dufresne
Chitosan (CS) aerogels are highly porous (∼99 %), exhibit ultralow density, and are excellent sorbents for removing ionic pollutants and oils/organic solvents from water. Their abundant hydroxyl and amino groups facilitate the adsorption of ionic pollutants through electrostatic interaction, complexation and chelation mechanisms. Selection of suitable surface wettability is the way to separate oils/organic solvents from water. This review summarizes the most recent developments in improving the adsorption performance, mechanical strength and regeneration of CS aerogels...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763723/unveiling-the-potential-of-ursolic-acid-modified-hyaluronate-nanoparticles-for-combination-drug-therapy-in-triple-negative-breast-cancer
#9
JOURNAL ARTICLE
Reena Sharma, Vivek Yadav, Shikha Jha, Sayali Dighe, Sanyog Jain
Triple negative breast cancer (TNBC) represents the most aggressive and heterogenous disease, and combination therapy holds promising potential. Here, an enzyme-responsive polymeric prodrug with self-assembly properties was synthesized for targeted co-delivery of paclitaxel (PTX) and ursolic acid (UA). Hyaluronic acid (HA) was conjugated with UA, yielding an amphiphilic prodrug with 13.85 mol% UA and a CMC of 32.3 μg/mL. The HA-UA conjugate exhibited ∼14 % and 47 % hydrolysis at pH 7...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763722/structure-and-functionality-of-surface-active-amylose-fatty-amine-salt-inclusion-complexes
#10
JOURNAL ARTICLE
Gordon W Selling, William T Hay, Steven C Peterson, Milagros P Hojilla-Evangelista, James A Kenar, Kelly D Utt
Novel value-added starch-based materials can be produced by forming amylose inclusion complexes (AIC) with hydrophobic compounds. There is currently little research on AIC use as polymeric emulsifiers, particularly for AIC with fatty amine salt ligands. This work evaluated AIC emulsifiers by studying the structure and functionality of AIC composed of high amylose corn starch and fatty amine salts (10-18 carbons, including a mixture simulating vegetable oil composition) produced via steam jet cooking. X-ray scattering verified successful AIC formation, with peaks located near 7...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763721/lanthanum-calcium-bimetallic-modified-attapulgite-chitosan-hydrogel-beads-for-efficient-phosphate-removal-from-water-performance-evaluation-mechanistic-and-life-cycle-assessment
#11
JOURNAL ARTICLE
Weihan Wang, Hao Kong, Jiarui Wang, Gengtao Zhang, Feng Shen, Fang Liu, Zhiping Huang
Phosphorus is a critical factor in the control of eutrophication. We developed a three-dimensional porous, bimetallic-modified adsorbent La-Ca-CS/ATP to remove excess phosphate from water. Langmuir model showed that the theoretical adsorption capacity of La-Ca-CS/ATP was up to 123 mg P/g. The amount of La and Ca leached by La-Ca-CS/ATP was small, and the adsorption of 36.08 mg P/g was maintained during the five cycles of La-Ca-CS/ATP. The La-Ca-CS/ATP adsorption mechanism mainly involved surface precipitation, ligand exchange, electrostatic attraction, and inner-sphere complexation...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763720/schiff-base-crosslinked-hyaluronic-acid-hydrogels-with-tunable-and-cell-instructive-time-dependent-mechanical-properties
#12
JOURNAL ARTICLE
Taha Behroozi Kohlan, Yanru Wen, Carina Mini, Anna Finne-Wistrand
The dynamic interplay between cells and their native extracellular matrix (ECM) influences cellular behavior, imposing a challenge in biomaterial design. Dynamic covalent hydrogels are viscoelastic and show self-healing ability, making them a potential scaffold for recapitulating native ECM properties. We aimed to implement kinetically and thermodynamically distinct crosslinkers to prepare self-healing dynamic hydrogels to explore the arising properties and their effects on cellular behavior. To do so, aldehyde-substituted hyaluronic acid (HA) was synthesized to generate imine, hydrazone, and oxime crosslinked dynamic covalent hydrogels...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763719/synthesis-and-real-time-characterization-of-self-healing-injectable-fast-gelling-hydrogels-based-on-alginate-multi-reducing-end-polysaccharides-mreps
#13
JOURNAL ARTICLE
Zhenghao Zhai, Yang Zhou, Ishani Sarkar, Yang Liu, Yimin Yao, Junru Zhang, Michael J Bortner, John B Matson, Blake N Johnson, Kevin J Edgar
Polysaccharide-based hydrogels are promising for many biomedical applications including drug delivery, wound healing, and tissue engineering. We illustrate herein self-healing, injectable, fast-gelling hydrogels prepared from multi-reducing end polysaccharides, recently introduced by the Edgar group. Simple condensation of reducing ends from multi-reducing end alginate (M-Alg) with amines from polyethylene imine (PEI) in water affords a dynamic, hydrophilic polysaccharide network. Trace amounts of acetic acid can accelerate the gelation time from hours to seconds...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763718/a-chemo-enzymatic-pathway-to-expand-cellooligosaccharide-chemical-space-through-amine-bond-introduction
#14
JOURNAL ARTICLE
Awilda Maccow, Hanna Kulyk, Etienne Severac, Sandrine Morel, Claire Moulis, Guillaume Boissonnat, Magali Remaud-Simeon, David Guieysse
Enzymatic functionalization of oligosaccharides is a useful and environmentally friendly way to expand their structural chemical space and access to a wider range of applications in the health, food, feed, cosmetics and other sectors. In this work, we first tested the laccase/TEMPO system to generate oxidized forms of cellobiose and methyl β-D-cellobiose, and obtained high yields of novel anionic disaccharides (>60 %) at pH 6.0. Laccase/TEMPO system was then applied to a mix of cellooligosaccharides and to pure D-cellopentaose...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763717/structural-analysis-and-in-vitro-fermentation-characteristics-of-an-avicennia-marina-fruit-rg-i-pectin-as-a-potential-prebiotic
#15
JOURNAL ARTICLE
Jinwen Huang, Huiqi Wang, Huaqun Chen, Zidong Liu, Xuedong Zhang, Hao Tang, Shiying Wei, Wangting Zhou, Xinzhou Yang, Yonghong Liu, Longyan Zhao, Qingxia Yuan
Avicennia marina (Forssk.) Vierh. is a highly salt-tolerant mangrove, and its fruit has been traditionally used for treating constipation and dysentery. In this study, a pectin (AMFPs-0-1) was extracted and isolated from this fruit for the first time, its structure was analyzed, and the effects on the human gut microbiota were investigated. The results indicated that AMFPs-0-1 with a molecular weight of 798 kDa had a backbone consisting of alternating →2)-α-L-Rhap-(1→ and →4)-α-D-GalpA-(1→ residues and side chains composed of →3-α-L-Araf-(1→-linked arabinan with a terminal β-L-Araf, →5-α-L-Araf-(1→-linked arabinan, and →4)-β-D-Galp-(1→-linked galactan that linked to the C-4 positions of all α-L-Rhap residues in the backbone...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763716/a-review-on-intelligence-of-cellulose-based-materials
#16
REVIEW
Zhanying Sun, Xin Wang, Haoran An, Shuang Liang, Na Li
Cellulose based materials are widely used in various fields such as papermaking, packaging, composite materials, textiles and clothing due to their diverse types, environmental friendliness, natural degradation, high specific strength, and low cost. The intelligence of cellulose based materials will further expand their application fields. This article first gives an in-depth analyzation on the intelligent structural design of these materials according to the two major categories of isotropic and anisotropic, then lists the main preparation methods of cellulose based intelligent materials...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763715/apparent-amylose-content-positively-influences-the-quality-of-extruded-fortified-rice-kernels
#17
JOURNAL ARTICLE
A Nithya, Siddharth Vishwakarma, Chandrakant Genu Dalbhagat, Hari Niwas Mishra
The present research studies the impact of apparent amylose content (AAC) on the quality of fortified rice kernels (FRK), a health food designed to combat iron deficiency anemia by fortifying with iron, folic acid, and vitamin B12 . Five FRK formulations with varying AAC (0.46-23.89 %) were prepared, and AAC influence on the extruder-system parameter and physicochemical, cooking, and textural properties of FRK was investigated. The torque, die-pressure, length, redness, and cooking time increased with an increase in AAC and were in the range of 12...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763714/anisotropic-foams-derived-from-textile-based-cellulose-nanocrystals-and-xanthan-gum
#18
JOURNAL ARTICLE
Maria-Ximena Ruiz-Caldas, Carina Schiele, Seyed Ehsan Hadi, Matilda Andersson, Pardis Mohammadpour, Lennart Bergström, Aji P Mathew, Varvara Apostolopoulou-Kalkavoura
The upcycling of discarded garments can help to mitigate the environmental impact of the textile industry. Here, we fabricated hybrid anisotropic foams having cellulose nanocrystals (CNCs), which were isolated from discarded cotton textiles and had varied surface chemistries as structural components, in combination with xanthan gum (XG) as a physical crosslinker of the dispersion used for foam preparation. All CNCs had crystallinity indices above 85 %, zeta potential values below -40 mV at 1 mM NaCl, and true densities ranging from 1...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763713/cutting-processability-of-metal-ion-containing-cellulose-nanofibril-films-by-continuous-wave-laser
#19
JOURNAL ARTICLE
Natsuo Suzuki, Daisuke Ando, Kojiro Uetani
Understanding the cutting processability of cellulose nanofibril (CNF) films by continuous wave laser is important for precise shape processing that closely follows the design pattern. In this study, laser cutting of films made of surface-carboxylated CNFs with various counterionic species was performed to explore the factors that control the cutting processability. The cut width and the thermally affected width are mainly controlled by the laser irradiation energy per unit length. The processed cross section is tapered and rises above the film thickness...
August 15, 2024: Carbohydrate Polymers
https://read.qxmd.com/read/38763712/cell-adhesive-double-network-self-healing-hydrogel-capable-of-cell-and-drug-encapsulation-new-platform-to-construct-biomimetic-environment-with-bottom-up-approach
#20
JOURNAL ARTICLE
JaeWook Park, Hyunji Kim, Jeongwoo Ham, Wonjae Lee, Won-Gun Koh
This study presents the development and characterization of a novel double-network self-healing hydrogel based on N-carboxyethyl chitosan (CEC) and oxidized dextran (OD) with the incorporation of crosslinked collagen (CEC-OD/COL-GP) to enhance its biological and physicochemical properties. The hydrogel formed via dynamic imine bond formation exhibited efficient self-healing within 30 min, and a compressive modulus recovery of 92 % within 2 h. In addition to its self-healing ability, CEC-OD/COL-GP possesses unique physicochemical characteristics including transparency, injectability, and adhesiveness to various substrates and tissues...
August 15, 2024: Carbohydrate Polymers
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