Article
Agricultural Engineering
Tian He, Lixue Hang, Mingyou Liu, Haiyu Liu, Lu Wang, Fangeng Chen, Xiaofei Tian
Summary: The research showed that water-soluble chitosan effectively protects cellulose viscosity during the ozone bleaching process, leading to improved pulp quality, especially for sulfate hardwood pulp.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Applied
Pengbo Wang, Xingshuang Lv, Bingqian Zhang, Tengbin Wang, Chenbo Wang, Jiaxi Sun, Kun Zhang, Ya'nan Wu, Jian Zhao, Yongqin Zhang
Summary: With the assistance of 13C NMR and 1H-13C HSQC, a novel 1H NMR assay has been developed for determining substitution sites and degrees in hydroxypropyl chitosan (HPCS). By optimizing sample preparation and measurement method, the method allows for accurate discrimination and determination of NH2-substitution, OH-substitution, and degree of acetylation. The analysis is extendable to other amino-containing saccharides, making it a widely applicable method in structural analysis.
CARBOHYDRATE POLYMERS
(2021)
Article
Construction & Building Technology
Xiaojuan Wang, Yan Gao, Na Han, Xingxiang Zhang, Wei Li
Summary: A novel microencapsulated composite phase change material (MCPCMs) with low-supercooling was successfully prepared using melamine formaldehyde resin (MF) as the shell. The composite phase change materials (CPCMs) showed enhanced thermal decomposition temperature, energy storage efficiency, and satisfactory thermal cycle stability. This material has broad application prospects in heat storage textiles, forming processing, and energy-saving building materials.
ENERGY AND BUILDINGS
(2021)
Article
Biochemistry & Molecular Biology
Xinyu Zhang, Wenyuan Zhu, Jiaqi Guo, Junlong Song, Huining Xiao
Summary: The degree of substitution (DS) of quaternary cellulose (QC) samples synthesized with microwave assistance was found to be positively correlated with the strength improvement of fiber networks. The addition of QC enhanced the tensile and burst strength of fiber networks, with the best result achieved with a QC DS of 0.51.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Electrochemistry
Ningling Yu, Jun Ke, Lei Li, Yafan Bi
Summary: Two types of water-soluble carboxymethyl chitosan with different degrees of substitution were synthesized and used to assemble high-performance cathodes in lithium-nickel-manganese oxide (LNMO) batteries. The water-soluble O-CCTS provided abundant hydrogen bonding and chelation with metal ions, resulting in better wrapping and uniform coating of the cathode material on the electrode sheets. The O-CCTS-LNMO cathode exhibited higher discharge capacity and better impedance and cyclic performance compared to O,N-CCTS-LNMO and PVDF-LNMO.
ELECTROCHIMICA ACTA
(2023)
Article
Pharmacology & Pharmacy
Ahmed M. Omer, Maha S. Ahmed, Gehan M. El-Subruiti, Randa E. Khalifa, Abdelazeem S. Eltaweil
Summary: Alg-CMCs@AmCs dual polyelectrolyte complexes were successfully employed as a pH-sensitive drug carrier for efficient encapsulation and release of diclofenac sodium. The developed microcapsules showed excellent stability and high encapsulation efficiency under colonic conditions, suggesting great potential for practical applications.
Article
Biochemistry & Molecular Biology
Hezhong Wang, Maren Roman
Summary: This study aimed to investigate the effects of chitosan molecular weight and degree of deacetylation on the formation of chitosan-cellulose nanocrystal polyelectrolyte-macroion complexes. The results showed that chitosan molecular weight had no significant effect on complex formation, but had a minor impact on particle shape and size. Lower sulfate group density and larger hydrodynamic diameter of CNCs, as well as higher degree of deacetylation of chitosan, resulted in higher turbidity levels, indicating the need for more CNCs for charge compensation.
Article
Polymer Science
Amer Rashid Hameed, Hatem Majdoub, Fawzi Habeeb Jabrail
Summary: Cross-linked microspheres loaded with Favipiravir SARS-CoV-2 antiviral drug were prepared using different cross-linking techniques. Analysis revealed that one of the polysaccharides was pectin extracted from pomegranate peels. The surface morphology of the microspheres differed, with Glu microspheres having a rough surface and SHMP microspheres having a smooth surface. The loading percentage of the drug was higher in SHMP microspheres, and the release time depended on the pH of the release medium.
Article
Polymer Science
Sizhao Zhang, Qi Xiao, Yunyun Xiao, Zhengquan Li, Shixian Xiong, Feng Ding, Junpeng He
Summary: This study explores a facile strategy to restrain the shrinkage of chitosan-based aerogels by introducing nanofibrillar cellulose and polyvinyl alcohol chains. The results show that CTS/PVA/NFC hybrid aerogels with an aspect ratio of 37.5 for NFC have excellent thermal conductivity, low density, and high compressive stress.
Article
Chemistry, Applied
Dominik Ruhr, Michael John, Annette Reiche
Summary: Experimental study showed that approximately 50% of BDDE molecules effectively cross-link, and there is a direct correlation between the degree of cross-linking and the decomposition temperature of the cellulose membranes.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Jonas Wolfs, F. Clara M. Scheelje, Olga Matveyeva, Michael A. R. Meier
Summary: Cellulose derivatives have potential as bio-based polymeric materials in various applications, and accurately determining their degree of substitution (DS) is crucial for understanding their material properties. This study investigated the usefulness of attenuated total reflection-Fourier transform infrared in determining the DS of cellulose esters. A newly developed model was used to fit the data and a non-linear correlation between absorbance intensity and DS was observed. This DS determination method is simple, efficient, and can be applied to non-soluble samples.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Polymer Science
Meiyan Wu, Wangfang Deng, Yidong Zhang, Chao Chen, Zhexuan Liu, Pedram Fatehi, Bin Li
Summary: In this study, cellulose nanofibrils and chitosan composite beads were prepared using a simple and efficient method and exhibited large surface area, uniform pores, strong mechanical properties, and water resistance. These beads showed high efficiency in drug encapsulation and controlled release under acidic conditions.
Article
Construction & Building Technology
Jian Li, Ru Wang, Yu Xu
Summary: The effects of different cellulose ethers on the setting and hydration process of calcium sulphoaluminate (CSA) cement were studied in this research. The results showed that the type and dosage of cellulose ethers had an impact on the setting time and hydration heat of the cement.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Paper & Wood
Xinyu Zhang, Jing Tian, Peipei Wang, Tian Liu, Xiaomin Lu, Jiaqi Guo, Yongcan Jin, Huining Xiao, Junlong Song
Summary: The substitution degree (DS) of charged groups in a polymer has a significant impact on its adsorption behavior at the interface, which ultimately affects its applications and performance. This study investigates the adsorption behavior of quaternary celluloses (QCs) with different DS (0.23 and 0.51) on charged surfaces, particularly silica surface. The results reveal that QCs with lower DS can adsorb more onto the silica surface but with a softer conformation, while QCs with higher DS exhibit more negative ΔG, more negative ΔH, slightly lower positive ΔS, and less favorable ΔC-p, indicating the substantial influence of DS on the adsorption behavior and thermodynamics of QCs.
Article
Polymer Science
Gustavo Cabrera-Barjas, Liliam Becheran, Oscar Valdes, Ady Giordano, Rodrigo Segura-del Rio, Gaston Bravo-Arrepol, Esteban F. Duran-Lara, Juan Cea, Alex Berg, Johana Castanos, Saddys Rodriguez-Llamazares, Gast on Fuentes, Plamen Katsarov, Paolina Lukova, Cedric Delattre
Summary: The overuse of antibiotics can lead to the development of resistance to targeted bacteria. A controlled release system, such as the nanocomposite films prepared in this study, can provide a solution for achieving higher drug efficiency without overdosing and drug resistance. The films, made from chitosan reinforced with cellulose nanofibrils, showed promising properties for antibiotic release. The content of nanofibers in the film formulation affected the swelling capacity, stiffness, and tensile strength of the films, as well as the release rate of vancomycin, suggesting the potential application of these films for pharmaceutical purposes.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Computer Science, Software Engineering
Xuechun Ji, Maoxian Zhao, Mingyu Zhai, Qingxi Wu
SCIENTIFIC PROGRAMMING
(2020)
Article
Biochemistry & Molecular Biology
Qing-Xi Wu, Zi-Dan Wang, Meng-Fei Zheng, Ting Su, Xiao-Hui Wang, Yi-Xin Guan, Yan Chen
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)
Article
Materials Science, Paper & Wood
Xiao-Hui Wang, Ting Su, Jin Zhao, Zhi Wu, Dong Wang, Wen-Na Zhang, Qing-Xi Wu, Yan Chen
Article
Engineering, Chemical
Jin Zhao, Qing-Xi Wu, Xiao-Du Cheng, Ting Su, Xiao-Hui Wang, Wen-Na Zhang, Yong-Ming Lu, Yan Chen
Summary: The mycelia of Lactarius deliciosus showed excellent capability in decolorizing CBB, with high removal rates and good re-usability. Enzymes involved in the degradation process were verified, and toxicity assessments indicated minimal impact on seed germination and bacterial growth. The removal of CBB was achieved through a synergistic process of adsorption and biodegradation.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Applied
Nan-Nan Zhang, He Ma, Zhong-Fei Zhang, Wen-Na Zhang, Lei Chen, Wen-Juan Pan, Qing-Xi Wu, Yong-Ming Lu, Yan Chen
Summary: A novel polysaccharide, FMP-2, was isolated and purified from the fruiting bodies of Morchella esculenta using alkali-assisted extraction. FMP-2 exhibited immunomodulatory effects, stimulating phagocytosis and the secretion of cytokines. It also showed a repairing effect on immune injury. These findings suggest that FMP-2 has potential applications as an immunomodulator in the food and pharmaceutical industries.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Applied
Ling Tang, Yi-Hong Chen, Qiong Wang, Xiao-Hui Wang, Qing-Xi Wu, Zhi-Feng Ding
Summary: The study focused on overcoming the challenges bioactive proteins face in the harsh gastric environment, utilizing microencapsulation as a strategy to protect them. Bovine serum albumin and ovalbumin were used as model proteins, with a polylysine-alginate complex fabricated for microencapsulation. Results showed that the protein-loaded microcapsules exhibited excellent tolerability to the acidic gastric environment, with slow release in simulated gastric fluids and sustained release in intestinal fluids. The developed microcapsules could potentially be used as a vehicle for bioactive proteins in functional foods, health care products, and medical formulations.
Article
Food Science & Technology
Zhi Wu, Dong Wang, Cai-Xia Liu, Xiao-Hui Wang, Yan Chen, Qing-Xi Wu, Jin-Song Zhang
Summary: The immune activation effect of Lu'an Guapian polysaccharide (LGP-1) on RAW264.7 macrophages was investigated. The results showed that LGP-1 significantly promoted the phagocytosis of macrophages, increased the production of reactive oxygen species, and enhanced macrophage immunity through the PI3K/AKT and NF-KB signaling pathways. TLR4 was also involved in this process. These findings suggest that LGP-1 has the potential to be used as a bioactive substance in functional foods.
JOURNAL OF FUNCTIONAL FOODS
(2022)
Article
Biochemistry & Molecular Biology
Kunfeng Zhang, Yuzhe Huang, Qianzhen Wu, Wenhua Guo, Hao Chen, Wenna Zhang, Yong Li, Yongming Lu, Qingxi Wu, Wenjuan Pan, Lei Chen, Yan Chen
Summary: The study aimed to prepare Armillariella tabescens mycelia polysaccharides (PAT) with potent inhibitory effect on food-borne pathogenic bacteria and investigate its antibacterial mechanism. The results showed that PAT inhibited the growth of various bacterial species and induced cell wall and membrane rupture. Moreover, PAT increased broth conductivity, protein exudation, and enzyme activities, and caused morphological changes, reactive oxygen species accumulation, and cell apoptosis in treated bacteria.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Review
Biochemistry & Molecular Biology
Yuzhe Huang, Hao Chen, Kunfeng Zhang, Yongming Lu, Qianzheng Wu, Jielin Chen, Yong Li, Qingxi Wu, Yan Chen
Summary: Intestinal dysbiosis is a major cause of metabolic syndromes. Polysaccharide-based microbial therapeutic strategies have potential in the treatment of metabolic syndromes, but the underlying regulatory mechanisms are unclear. Understanding the internal regulatory mechanism of the gut microbiome is essential for precise control and valuable clinical data.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Food Science & Technology
Yuzhe Huang, Kunfeng Zhang, Wenqiang Guo, Chan Zhang, Hao Chen, Tenglong Xu, Yongming Lu, Qingxi Wu, Yong Li, Yan Chen
Summary: This study prepared buckwheat dietary fiber with improved biological activity through liquid fermentation and found that fermented buckwheat dietary fiber had potential prebiotic effects in ameliorating obesity, as well as reducing hepatic lipid profile, oxidative stress, and regulating gut microbiota.
JOURNAL OF FUNCTIONAL FOODS
(2022)
Article
Food Science & Technology
Xiao-Hui Wang, Xiao-Du Cheng, Dong Wang, Zhi Wu, Yan Chen, Qing-Xi Wu
Summary: The polysaccharide fraction LDP-1 from wild Lactarius deliciosus fruiting bodies exhibited significant antioxidant and anti-aging effects, extending the lifespan of C. elegans, improving survival rates under heat shock and oxidative stress conditions, and reducing lipofuscin and reactive oxygen free radicals accumulation.
FOOD & NUTRITION RESEARCH
(2022)
Article
Food Science & Technology
Wen-Na Zhang, Yuan -Yuan Li, Jia-Jia Xu, Lu-Lu Shi, Lei Chen, Yong-Ming Lu, Qing-Xi Wu, Jian-Guang Luo, Yan Chen
Summary: Armillariella tabescens methanol extract (AME) has been found to have significant therapeutic effects on ulcerative colitis (UC), including reducing symptoms, increasing anti-inflammatory factors, and inhibiting inflammation signaling pathways. It also improves the expression of tight junction proteins. This study suggests that AME has the potential to be developed into a promising therapeutic agent for UC treatment.
JOURNAL OF FUNCTIONAL FOODS
(2022)
Article
Biophysics
Xiaocui Zhao, Renkang Zhu, Max Anikovskiy, Qingxi Wu, Zhifeng Ding
Summary: This study utilized scanning electrochemical microscopy (SECM) to quantitatively determine the extracellular H2O2 released from single COS-7 cells with high spatial resolution. The SECM mode allowed for efficient recording of probe approach curves (PACs) and visualization of cell topography simultaneously. The H2O2 concentration at the membrane surface of intact COS-7 cells was determined to be 0.020 mM using experimental PACs and a simulated PAC with a known H2O2 release value. Additionally, confocal microscopy was used to demonstrate the intracellular H2O2 profile, showing that H2O2 generation is centered at the endoplasmic reticula.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Biochemistry & Molecular Biology
Lei Chen, Ming Xiang, Fen Wu, Yun Jiang, Qingxi Wu, Wenna Zhang, Wenqiang Guo, Bolin Cai, Li Liang, Songnan Li, Yan Chen, Xianfeng Du
Summary: Lycopene-loaded nanofibers were successfully fabricated by electrospinning of oil-in-water emulsions stabilized by whey protein isolate-polysaccharide complexes. The encapsulated lycopene exhibited enhanced stability and targeted release in the small intestine. The bioavailability and cellular uptake of lycopene were significantly improved, promoting its absorption and intracellular antioxidant activity. This study introduces a potential delivery system for liposoluble nutrients with enhanced bioavailability in the functional food industry.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Jiao-Jiao Liu, Juan Chen, Ya Wang, Chen-Chen Yan, Chan Zhang, Shomaila Mehmood, Wen-Juan Pan, Wen-na Zhang, Yong-Ming Lu, Qing-Xi Wu, Lei Chen, Yan Chen
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)
