INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Ge Bai,Yaqin Zhang,Yiguo Yuan,Kaiheng Zhang,Yan Liu,Yu Zhang,Yan Ma,Heng Du
Advancing eco-friendly refining technologies that preserve key bioactives is vital for producing high-quality functional edible oils. In this work, corn oil was selected as a representative model to evaluate a sustainable deacidification strategy based on alkali-modified cellulose materials. Alkali-modified cellulose (AMC) adsorbents were developed by treating microcrystalline cellulose (MCC) with NaOH (5–50 %) and evaluated for their performance in corn oil deacidification. The adjustability of alkali concentration enables the preparation of AMC with specific adsorption capacities suited to oils of varying acid values. The AMC treated with 25 % NaOH achieved the highest deacidification efficiency (97.23 %) under optimized conditions (3 % dosage, 50 °C, 200 rpm, 90 min) for corn oil with an initial acid value of 6.51 mg KOH/g. The alkali treatment caused visible changes in the color, morphology, and transparency of AMC, reflecting the structural transformation induced by different alkali concentrations. Structural characterizations via SEM, TEM, XRD, and FTIR confirmed enhanced porosity and crystalline transformation conducive to free fatty acid (FFA) adsorption. AMC showed minimal impact on oil's peroxide value and fatty acid composition, with high retention of tocopherols (96.27 %) and phytosterols (91.17 %), though squalene loss was substantial (85.91 %). These findings indicate that AMC can be further developed into a tunable and selective deacidification approach for corn oil and potentially other edible oils, enabling precision refinement while minimizing nutritional loss.
研究领域:
食品科学与技术
·
可持续化学
·
吸附材料
·
食用油精炼
✓ 已验证
产品关联
DOI
PubMed
高影响因子
AATCC Journal of Research
·
2021
·
IF 1.127
Sayed Waqar Azhar,Fujun Xu,Yiping Qiu
In recent decades, rational management of agricultural residues presented a new approach for extraction, characterization, and utilization of cellulose nanofibers (CNF). In this context, the valorization of flaxseed fibers, providing an annual yield of millions of metric tons, as an abundant sustainable fiber source, was carried out. The cleaned and ground raw material was delignified and bleached, followed by 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)/NaBr/NaClO oxidization along with mechanical homogenization. The resulting extracted cellulose and cellulose nanofibers were characterized by various analytical methods. The overall yield of CNF based on the raw material was 31.2% ± 1.5%. This study explored a simple method for converting flaxseed fibers to fluorescent, high quality, nano-sized cellulosic precursors for novel applications in pharmaceutical and bio-composite applications.
研究领域:
材料科学
·
生物工程
·
农业科学
✓ 已验证
DOI
高影响因子
POLYMER SCIENCE SERIES B
·
2016
·Vol. 58
·期 5
·594-600
·
IF 0.737
Wang Yan,Wei Nuo,Feng Qingling,Li Sha,Yang Chang,Liu Zhiqiang,Zhang Wenming,Li Qing
Novel luminescent bio-based hydrogels comprising cellulose and Y 4 Si 2 O 7 N 2 :Ce 4+ (YC) were prepared in an alkali/urea aqueous system using epichlorohydrin as a cross-linker. The structure, characteristics and properties of the hydrogels were investigated by various techniques, including FTIR spectroscopy, wideangle X-ray diffraction, scanning electron microscopy, etc. The results showed that when the content of YC was less than 0.05 g, the YC particles were tightly embedded in the macro porous of cellulose matrix, which not only supplied cavities for YC immobilization, but also supplied the pore wall to protect the structure and character of YC. Hence, the cellulose–YC hybrid hydrogels exhibited strong cyan fluorescence under a UV lamp. However, excess of YC particles were enshrouded in the cellulose matrix resulted in smaller pores, weaker fluorescence intensity, lower swelling ratio and higher mechanical properties.
研究领域:
材料科学
·
生物材料
✓ 已验证
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2013
·
IF 0.85
Fu RenChun,Du Jun,Huang hui,Guo Zhong-Cheng
The template method for polymerization has high potential for synthesizing polymer nanotubes, nanofibers, and nanobelts because it controls the diameter and length of the material microstructure. In this study, polyaniline (PANI) nanofibers were successfully prepared with ethyl cellulose as the template. The chemical constituents and crystallinity of the PANI nanofiber samples were investigated by Fourier transform infrared spectroscopy and x-ray powder diffraction. Sample morphology was characterized by scanning and transmission electron microscopy. The size uniformity and electrical conductivity of the PANI nanofibers were also determined. The electrical conductivity of the PANI nanofibers reached up to 13.5 S cm−1 at a hydrochloric acid concentration of 1 mol L−1. The PANI nanoparticles had uniform size, and the PANI nanofibers were disordered. The mechanism of ethyl cellulose as a template for synthesizing PANI nanofibers was also analyzed. This study provides a simple method for synthesizing uniform conductive PANI nanofibers.
研究领域:
材料科学
·
纳米技术
·
高分子化学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 133
·期 14
·
IF 1.768
Hairong Zhang,Haijun Guo,Bo Wang,Lian Xiong,Silan Shi,Xinde Chen
In this work, cationic cellulose (CC) with different degrees of substitution (DS) was successfully synthesized by the reaction between cellulose and 3-chloro-2-hydroxypropyl-trimethylammonium chloride (CHPTAC) in a 7 wt % NaOH and 12 wt % urea aqueous solution. The structure of the CC was characterized by using elemental analysis, 1 H-NMR, and FTIR. The DS values of CC ranged between 0.18 and 0.50, which could be obtained by adjusting the reaction temperature, reaction time, and molar ratio of CHPTAC to anhydroglucose unit of cellulose. The cationic cellulose–graft–polyacrylamide flocculant (CC-g-PAM) based on CC and polyacrylamide (PAM) was also synthesized in a homogeneous aqueous solution. The flocculation characteristics of CC and CC-g-PAM were evaluated in a kaolin suspension. The results showed that CC-g-PAM was an effective flocculant for the kaolin suspension under acidic or neutral conditions, and the flocculation efficiency was over 90%, while the CC showed better flocculation performance under alkaline conditions. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43106.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
Acta Biomaterialia
·
2012
·
IF 4.865
D.G. Yu,X. Wang,X.Y. Li,W. Chian,Y. Li,Y.Z. Liao
The capability of core/sheath nanofibers prepared using coaxial electrospinning to provide adjustable biphasic drug release was investigated. Using ketoprofen (KET) as the model drug, polyvinylpyrrolidone as the sheath polymer, and ethyl cellulose as the core matrix, the coaxial process could be conducted smoothly and continuously without spinneret clogging. Scanning electron microscopy and transmission electron microscopy revealed linear nanofibers with homogeneous and clear core/sheath structures. Differential scanning calorimetry and X-ray diffraction verified that the core/sheath nanofibers were nanocomposites , with the drug present in the polymer matrix in an amorphous state. Attenuated total reflectance–Fourier transform infrared spectra demonstrated that the sheath polymer and core matrix were compatible with KET owing to hydrogen bonding . In vitro dissolution tests showed that the core/sheath nanofibers could provide typical biphasic drug release profiles consisting of an immediate and sustained release . The amount of drug released in the first phase was tailored by adjusting the sheath flow rate , and the remaining drug released in the second phase was controlled by a typical diffusion mechanism. The present study shows a simple and useful approach for the systematic design and fabrication of novel biomaterials with structural characteristics for providing complicated and programmed drug release profiles using coaxial electrospinning.
研究领域:
材料科学
·
药学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Kehao Fan,Tianjing Zhang,Siyu Xiao,Hua He,Jisheng Yang,Zhiyong Qin
Herein, functionalization cellulose-based composite aerogels with the addition of carboxyl cellulose nanofibers (CNF), montmorillonite (MMT) and polyethyleneimine (PEI) were fabricated by solution blending and freeze-drying technology. MMT was blended into the cellulose framework as a reinforcing agent. PEI combined with cellulose through amidation reaction, and the synergism of hydrogen bond and chemical bond helped the CNF/MMT/PEI composite aerogels (CMP) with good mechanical properties. The morphology, chemical structure and thermal stability of the CMP were characterized. The adsorption properties and mechanism of the CMP were discussed, using Congo red (CR) dye as an adsorbate. The results showed that the CMP formed a three-dimensional network structure with abundant pores. The addition of PEI regulated the surface charge distribution of cellulose and improved the adsorption performance of CMP for CR with the adsorption capacity of 3114 mg/g calculated by the Langmuir model. The adsorption process of CMP-30 for CR was more in line with the pseudo-second-order kinetic model and Langmuir isotherm model, indicating chemical adsorption of a single molecular layer. After functionalized by octadecyl trichlorosilane (OTS), the contact angle of the aerogel surface was 151.80°. Meanwhile, the CMP-30 was transformed from hydrophilic and lipophilic properties to hydrophobic and lipophilic properties.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Yingying Yu,Sixiang Zhao,Boyu Zhang,Silin Han,Ming Li,Liancheng Zhao,Liming Gao
Circularly polarized light (CPL) detection is important in the field of advanced optoelectronics. Traditionally, CPL detection with optical elements is limited by the challenge of integration. Chiral materials have been investigated for direct CPL detection without complex optical elements. However, chiral structures such as the CPL absorption layer need further investigation owing to the low anisotropy factor (gph). Herein, we demonstrate a composite structure combining chiral cellulose nanocrystals (CNCs) and TiO2 nanotube arrays (TNAs) for CPL detection. This CNC–TNA structure is fabricated by evaporation-induced self-assembly of CNCs on the top of electrochemically anodized TNAs. The excellent ability to distinguish between left-handed CPL (LCPL) and right-handed CPL (RCPL) is achieved using CNC–TNAs as photoelectrodes. Benefitting from the chiral nematic phase of CNCs, which selectively reflect LCPL and transmit RCPL, gph of CNC–TNA photoelectrodes reaches 0.33, indicating a highly effective distinguishability to CPL. CNC–TNA photoelectrodes realize the CPL detection with high gph (0.33), fast response (0.8 s), and cycling stability under time-varying CPL illumination. In addition, they can track the phase difference of elliptically polarized light due to the sensitivity to polarization states. The CNC–TNA composite structure opens up a potential approach for CPL detection.
研究领域:
材料科学
·
光学
·
纳米技术
✓ 已验证
DOI
高影响因子
National Science Review
·
2019
·Vol. 7
·期 1
·73-83
·
IF 13.222
Gao Huai-Ling,Zhao Ran,Cui Chen,Zhu Yin-Bo,Chen Si-Ming,Pan Zhao,Meng Yu-Feng,Wen Shao-Meng,Liu Chuang,Wu Heng-An,Yu Shu-Hong
Bio-sourced nanocellulosic materials are promising candidates for spinning high-performance sustainable macrofibers for advanced applications. Various strategies have been pursued to gain nanocellulose-based macrofibers with improved strength. However, nearly all of them have been achieved at the expense of their elongation and toughness. Inspired by the widely existed hierarchical helical and nanocomposite structural features in biosynthesized fibers exhibiting exceptional combinations of strength and toughness, we report a design strategy to make nanocellulose-based macrofibers with similar characteristics. By combining a facile wet-spinning process with a subsequent multiple wet-twisting procedure, we successfully obtain biomimetic hierarchical helical nanocomposite macrofibers based on bacterial cellulose nanofibers, realizing impressive improvement in their tensile strength, elongation and toughness simultaneously. The achievement certifies the validity of the bioinspired hierarchical helical and nanocomposite structural design proposed here. This bioinspired design strategy provides a potential platform for further optimizing or creating many more strong and tough nanocomposite fiber materials for diverse applications.
研究领域:
材料科学
·
生物工程
·
纳米技术
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2020
·Vol. 27
·期 17
·10061-10075
·
IF 4.21
Wu Xingxian,He Ye,Lai Guichao,Zeng Rong,Tu Mei
Abstract Novel biomimetic zwitterionic phosphorylcholine (PC) modified bacterial cellulose (PCBC) membranes were prepared based on the Pudovik reaction of oxidized BC nanofiber clusters and then solution casting technology. Their chemical structure, morphology, hydrophilicity, mechanical and biocompatible properties were characterized and compared with non-modified BC membranes. The composition and morphology analysis of PCBC membranes confirmed the existence of zwitterionic PC groups on the membrane surfaces, and their nano-fibrous structure was kept. Compared with BC membranes, PCBC membranes exhibited better hydrophilicity, similar tensile strength, but decreased rupture strain. And PCBC membranes were non-hemolytic and non-cytotoxic like BC membranes. The anti-biofouling performance investigation revealed that PCBC membranes with zwitterionic surface showed significantly reduced protein adsorption for bovine serum albumin, as well as inhibited cell attachment for both L929 cells and macrophage RAW 264.7. The results strongly suggested that PCBC membranes with excellent cell fouling resistance are expected to be a promising anti-adhesion biomaterial. Graphic abstract
研究领域:
材料科学
·
生物医学工程
·
生物材料
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 14
·8871-8886
·
IF 4.22
Pi Menghan,Jiang Lichao,Wang Zhisen,Cui Wei,Shi Lingying,Ran Rong
As a new two-dimensional material, MXene has caused extensive research in field of supercapacitor, electromagnetic shielding, strain sensing field due to its excellent mechanical properties and electrical conductivity. MXene with good water dispersibility can be used as an ideal nano-material to enhance the conductivity of hydrogels. However, MXene is easy to accumulate in the hydrogel system, and there are rare articles on MXene hydrogels. In this paper, we combine cellulose nanocrystals (CNCs) and MXene to prepare CNC/MXene nanosheets and take advantage of CNC’s excellent dispersibility in water and the electrostatic repulsion between CNCs to avoid the accumulating of MXene and enhance the mechanical properties of the hydrogel. Based on it, we prepared a physical–chemical double crosslinking and double-network CNC/MXene hydrogel by in situ polymerization and cycle freeze-thaw method. The CNC/MXene hydrogel we prepared exhibited excellent mechanical properties; it could be stretched to 7 times its original length and could reach 1.025 MPa tensile stress. When the compression strain was 80%, the compression stress could reach 1.1 MPa. After unloading the compression pressure, it could rapidly return to its original length within 0.17 s, which would impact greatly on the practical application of CNC/MXene hydrogel. What's more, the conductivity of it was up to 0.4 S/m and the thermal conductivity was 0.38 W/mK. So, the hydrogel prepared by us has a wide range of application prospects in the fields of human motion monitoring, electronic skin, man–machine interface, etc.
研究领域:
材料科学
·
传感器技术
·
生物医学工程
✓ 已验证
DOI
高影响因子
MOLECULES
·
2016
·Vol. 21
·期 5
·618
·
IF 2.465
Dawei Li,Kelong Ao,Qingqing Wang,Pengfei Lv,Qufu Wei
Palladium nanoparticle-bacterial cellulose (PdBC) hybrid nanofibers were synthesized byin-situchemical reduction method. The obtained PdBC nanofibers were characterized by a series of analytical techniques. The results revealed that Pd nanoparticles were evenly dispersed on the surfaces of BC nanofibers. Then, the as-prepared PdBC nanofibers were mixed with laccase (Lac) and Nafion to obtain mixture suspension, which was further modified on electrode surface to construct novel biosensing platform. Finally, the prepared electrochemical biosensor was employed to detect dopamine. The analysis result was satisfactory, the sensor showed excellent electrocatalysis towards dopamine with high sensitivity (38.4 µA·mM−1), low detection limit (1.26 µM), and wide linear range (5–167 µM). Moreover, the biosensor also showed good repeatability, reproducibility, selectivity and stability and was successfully used in the detection of dopamine in human urine, thus providing a promising method for dopamine analysis in clinical application.Keywords:palladium nanoparticle;bacterial cellulose;laccase;dopamine;biosensor
研究领域:
材料科学
·
分析化学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）