FOOD CONTROL
·
2024
·
IF 5.6
Haoyue An,Zheng Lu,Zhaohui Wang,Muhammad Qamer Abbas,Zhenxia Du
Regenerated cellulose food packaging is increasingly widely used due to its renewable raw materials and excellent environmental performance. However, because its production process is complex, the safety of the regenerated cellulose food packaging needs to study carefully. In this study, we first collected the packages produced by traditional and new technology, and then HS-GC-MS was used to screen the volatile potential migrants in the package. Three food simulants were used for migration tests. The migrants from the regenerated cellulose food packaging during the contact with different foods were non-targeted screened and semi-quantitative by UPLC-QTOF-MS and GC-MS. The results show that 44 kinds of substances migrated to food simulants, and assessed their risk in conjunction with production processes. Glycerol or triethylene glycol as softeners, migrated in all three simulants and all types of packaging materials. Polyethylene glycol is detected in packaging materials with coatings, that come from adhesives. Allure red and its degradation products used for food coloring were detected in the transferable casing. The degradation product belongs to aromatic amine, which poses a high risk. Glycerol has the highest abundance among all migrants. By comparing the exposure and safety threshold values of migrants, it was found that polyethylene glycol and allure red pose health risks and should be paid more attention.
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 7
·4291-4303
·
IF 4.9
Xu Diansheng,Yang Jinshan,Lou Tao,Wang Xuejun
To improve the selective adsorption of the target pollutant, this study successfully synthesized chitosan/carboxymethyl cellulose molecularly imprinted hollow vesicles (CS/CMC-MIV) for selective adsorption of acid blue-113 (AB-113). The vesicles were obtained by mixing the carboxymethyl cellulose solution with the chitosan/AB-113 mixture in sequential fast and slow stirring. Benefiting from the molecular imprinting technique, the maximum adsorption capacity of AB-113 by CS/CMC-MIV was 972.7 mg/g, which was 84.8% higher than that of the vesicles without imprinting (526.4 mg/g). The adsorption process could be well in accordance with Langmuir isotherm and pseudo-second-order models. The vesicles exhibited superior stability and reusability, maintaining 92% of the initial adsorption capacity after four adsorption repeats. What's more, CS/CMC-MIV showed excellent selective adsorption ability on mixed dye solutions, which was attributed to the specific recognition sites created during the molecular imprint process. This study provides a facile method to bind dye templates to vesicles and excels at selective dye removal.
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2025
·
IF 4.3
Mengyang Bao,Guangzheng Qin,Wenjun Sun,Congjiu Liu,Yuxi Liu,Wenqian Ding,Yushan Jiang,Chen Yu,Xi Yuan,Shuangjian Yang,Weitao Zhao,Yunhui Xu
At present, flexible sensors are a hot spot in research and experimental development, but the research on flexible sensors that can be used for human motion monitoring still needs to be deepened. In this work, the green material cellulose acetate (CA) was used as the matrix material, the film was made by electrospinning, crushed by a cell grinder and sodium alginate (SA) was added to promote the uniform dispersion of nanofibers in water, and then methyltrimethoxysilane (MTMS) and MXene nanosheet dispersion were added to make it hydrophobic and good conductivity, and the aerogel precursor solution was prepared, and then the CA/SA/MTMS/MXene aerogel with directional holes was prepared by directional freeze-drying. As a flexible sensor material, it can be used for human wear, monitoring the electrical signals generated by the movement of human joints and other parts, and can still maintain a current of about 0.2 mA after 1000 compression cycles, with good current stability, and is widely used in the field of monitoring human movement. Furthermore, the water contact angle of CA/SA/MTMS/MXene aerogel is maintained above 120° and still shows strong hydrophobicity, which implies that the aerogel has the piezoresistive sensing potential under sweating conditions of the human body.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Haibo Jiang,Ruyu Bai,Yuqiao Zhao,Shanlin Shi,Geyuan Jiang,Dawei Zhao
Cellulose ionogels gain considerable attention for their application in flexible electronic devices. However, achieving an optimal balance between their mechanical and electronic properties remains a challenge. Here, a high-performance cellulose ionogel is reported through strengthening the hydrogen bond network and weakening electrostatic interactions within cellulose molecular framework. The resulting ionogels, under a single molecular network, exhibit impressive tensile strength of 3.5 MPa and ionic conductivity of 14.3 mS cm −1 . Additionally, they demonstrate a wide voltage window of up to 3.0 V and high thermal stability, withstanding temperatures exceeding 120 °C. Serving as all-solid electrolytes, the ionogels contribute to the construction of integrated flexible energy storage devices, achieving a remarkable energy density of over 60 Wh kg⁻¹ and demonstrating significant cycle stability, with a capacitance retention rate exceeding 97% after 10 000 charge–discharge cycles. With the robust mechanical and electrical properties, the cellulose ionogel is well-positioned to offer innovative insights for the next generation of flexible, integrated electronic devices.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Zhe Li,Xiaoxia Jiang,Ziheng Yao,Fucai Chen,Lin Zhu,Hongning Liu,Liangshan Ming
In this study, cellulose nanocrystals (CNC)/chitosan (CS)/glutaraldehyde (Glu) ternary composites were synthesized using cross-linking method with different CNC/CS ratios (1:1, 2:1, 3:1, 4:1, w/w). The composites were firstly characterized using various techniques, such as SEM , FT-IR, isothermal nitrogen adsorption/desorption and TGA . They were further used as solid stabilizers for the preparation of O/W Pickering emulsions. The appearance of emulsions, size and zeta potential and rheological properties of the droplets were investigated. The results showed that the cross-linked biopolymer composites had high surface area, variable morphology and special three-dimensional networks, and showed good emulsifying capacity. Furthermore, the droplet size and zeta potential of emulsions as functions of pH (2–12), temperature (4–60 °C) and ion strength (0–1000 mM) were studied, and the results confirmed that the emulsions prepared with CNC/CS composites had good physical stability at different varying conditions. This study suggested that CNC/CS composites could significantly improve the emulsifying capacity and therefore had great potential for application in the pharmaceutical and food sciences.
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2014
·
IF 3.916
Xu Wang,Yaping Wang,Li Li,Zhipeng Gu,Xixun Yu
The aim of this study was to evaluate the crosslinking effect of dialdehyde carboxymethyl cellulose (DCMC) on decellularized porcine aortas. Before implanted, biological tissues must be chemically modified to avoid rapid enzymatic degradation and serious immune response. To overcome limitations like high cytotoxicity and susceptibility to calcification caused by glutaraldehyde (GA), a traditional crosslinking reagent, dialdehyde carboxymethyl cellulose (DCMC) was employed to fix biological tissues. The crosslinking characteristics and cytotoxicity of aortas fixed by DCMC were all investigated. The results indicated that DCMC-fixation significantly increased the mechanical strength and the capacity of enzymatic hydrolytic resistance of tissues. The histological examination showed that the microcosmic structures of tissues were all preserved well after DCMC fixation. In addition, the data obtained from MTT assay confirmed that the cytotoxicity of DCMC-fixed tissues was significantly lower than glutaraldehyde-fixed counterparts. In a word, the present study demonstrated DCMC might be an effective crosslinking reagent for biological tissue fixation with low cytotoxicity.
✓ 已验证
DOI
PubMed
高影响因子
Food Chemistry-X
·
2021
·
IF 5.182
Xinna Hu,Tao Ma,Shuyu Lu,Yi Song
This study investigates the interactions between cellulose nanocrystals (CNCs) and bovine serum albumin (BSA) under different pH conditions. A multiscale technique was employed to characterize the CNCs and BSA at pH 7 and pH 3. ζ-Potential measurement and UV–vis spectroscopy demonstrated strong interactions between CNCs and BSA at pH 3, whereat they have opposite charges. Interfacial tensiometry showed a deficiency in the surface activity of the CNCs and indicated that BSA dominated the interface behavior in their complex. Quartz crystal microbalance with dissipation revealed that the sequential adsorption of BSA and CNCs produced viscoelastic bilayers at pH 3, and the mass adsorbed was ∼ 28 times that adsorbed at pH 7. Molecular dynamics simulations indicated that the key interactions between the two materials were produced between the hydrophobic CNC surface and the BSA domain IIA region. These results provide interesting insights into the design of complex food emulsions and fluid interfaces.
✓ 已验证
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Wenfeng Ni,Zhiming Zheng,Hui Liu,Peng Wang,Li Wang,Han Wang,Xiaowen Sun,Qiang Yang,Hengfang Tang,Genhai Zhao
Prenyltransferase NovQ immobilized carboxymethyl cellulose magnetic nanoparticles (NCMNs) were successfully synthesized via a valuable approach integrated from nanocomposite preparation, and applied for the production of vitamin K 2 using menadione hydroquinol and dimethylallyl diphosphate (DMAPP) as substrates. To investigate the interaction between nanoparticles and NovQ, we characterized the nanocomposite, and revealed that carboxymethyl cellulose (CMC) and Fe 3 O 4 formed a core-shell structure to absorb NovQ in the reaction systems, resulting from the high affinity of immobilized materials. Meanwhile, NCMNs with excellent pH and temperature tolerance, enhanced prenylated activity, and improved stability were found. Molecular docking analysis was also conducted to justify the contribution of multiple amino acids and effect of nanoparticles on catalytic properties of NovQ. Taken together, our study introduces a promising strategy to prepare magnetic nanoparticles and improve the performance of catalyst, which aims for opening new orientations for synthesis of magnetic nanoparticles used for prenyltransferase immobilization.
✓ 已验证
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Xuesong Ge,Youna Shan,Lin Wu,Xindong Mu,Hui Peng,Yijun Jiang
Composite aerogels with excellent mechanical properties were prepared by using carboxymethyl cellulose (CMC) as raw materials, 2D graphene oxide (GO) nanosheets as reinforcement, boric acid (BA) as cross-linker. By controlling the heat transfer rate, composite aerogels with isotropy and anisotropy structure were prepared, the mechanical and heat insulation properties were studied. The isotropy composite aerogel had compression strength of 110 kPa at 60% compression, which was 5 times of the axial and 14 times of the radial of anisotropy structure composite aerogels, and thermal conductivity was also lower than those of two directions of anisotropy composite aerogel. Besides, the mechanical properties of isotropy composite aerogels increased with the increase of GO content. When GO content was up to 5 wt%, the compressive strength and Young’s modulus of composite aerogels reached 349 kPa and 1029 kPa, which were 1.6 and 4.5 times that of CMC aerogels, respectively.
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Xiaohui Wei,Junjie Cai,Chunlai Wang,Kun Yang,Sheng Ding,Feng Tian,Song Lin
It is essential to enhance our antibacterial arsenal in the first-aid hemostatic treatment due to the healing delay and even death from the bacteria-contaminated wounds. Herein, serial quaternized chitosan with varying degrees of substitution (QCS X ) was prepared by glycidyl trimethyl ammonium chloride modification. Then the obtained QCS X was conjugated with dialdehyde cellulose (DAC) through Schiff base reaction to obtain the corresponding composite sponges (2QCS X -DAC). The surface morphology, chemical structures, and physical characters of mechanical measurement, water uptake behavior, porosity, and degradation tests were determined. Furthermore, in vitro and in vivo biological assays were performed. The obtained 2QCS X -DAC sponges exhibit abundant porous structures, moderate mechanical properties, excellent water uptake performance, and effective bactericidal rates against Staphylococcus aureus and Escherichia coli . Moreover, these porous composite sponges have superior blood coagulation abilities with the blood coagulation time reduced by 76.6% and 59.8% compared with blank control and Celox™ as well as low hemolysis rates (<5%). Meanwhile, 2QCS 3 -DAC had benign cytotoxicity of L929 cells in vitro and could accelerate the infected wound healing of rats at the early stage in vivo . Overall, this composite sponge appears to be a viable wound dressing for daily wound care in civilian hospitals and emergency hemostasis on battlefields.
✓ 已验证
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Yudong Zong,Jiang Lou,Hongbing Li,Xia Li,Yifei Jiang,Qijun Ding,Zhuqing Liu,Wenjia Han
Reasonable and efficient utilization of low-grade thermal energy in nature is the choice for sustainable energy development. We demonstrate a bacterial cellulose (BC) hydrogel thermocell (TEC) based on BC electrolyte combined with carbon fiber paper and copper composite electrode sheets. The large specific surface area of carbon fiber paper provides a large number of active sites for thermoelectric ions, which drives the redox reaction inside the electrolyte and stimulates the chemical reaction between the electrolyte and the electrode. The combination of the two chemical reactions significantly improves the thermoelectric performance of the thermocell. The thermopower of the BC-TEC reaches 5.9 mV·K −1 at a temperature difference of 50 K. The TEC consisting of 6-units in series produces an open-circuit voltage of about 2 V and a peak power of 535 μW. The TEC shows new potential and prospects in ambient thermoelectric energy conversion by rationally designing the power generation principle.
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Miao Tang,Ziqi Zhu,Kai Yang,Pei Yang,Yue Dong,Yakun Wu,Minzhi Chen,Xiaoyan Zhou
Stabilities of cellulose Pickering emulsions are of great importance to utilize them effectively, but influenced by their complex compositions, such as, colloidal particles, oil phases and water phases. In this work, solid-liquid controllable polymerization products could obtain by adjusting cellulose nanocrystals (CNCs) concentration and vinyl acetate (VAc)-water ratio. The emulsions in zone Ӏ (w/o) and II (o/w) of the three-phase diagram were selected for researching. The polymerization emulsions in zone II illustrated the o/w ratio played a more important role than CNCs concentration in the storage stability and practicality of the polymerized emulsion; The polymer in zone Ӏ showed a large number of porous structures. This is an innovative method that different forms of target products are obtained through the guidance of three-phase diagram, which not only broadens the application field, but also applies to other Pickering emulsion systems.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）