CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Bowen Li,Xinyi Zhu,Chaoqun Xu,Juan Yu,Xiaofang Zhang,Yimin Fan
Incorporating “cross-linkable” double bonds into cellulose nanofibers (CNFs) is crucial for fabricating high-performance composite hydrogels. Herein, TEMPO-oxidized CNFs syringaldehyde propiolate ether (TS), functionalized with “cross-linkable” internal alkenes (-C=C-), was synthesized via hydroxyl-yne click chemistry under mild aqueous conditions. This rapid modification yielded 0.24 ± 0.04 mmol/g alkenes in 5 min and 0.50 ± 0.03 mmol/g in 4 h. The internal -C=C- groups enabled efficient UV-induced gelation of TS dispersions (0.15–0.6 wt%) within 10 min. The TS-polyacrylamide (PAM) nanocomposite hydrogels exhibited a dual-network structure, with a crosslinked TS network providing mechanical support and a PAM network ensuring flexibility. At TS-PAM mass ratios of 0.45–0.9 wt%, stress and toughness increased by 108 ± 11.1 % and 673 ± 58.2 %, respectively, due to enhanced crosslinking and stress transfer. These hydrogels exhibited strain sensitivity (10–200 %) and stable dynamic response across strain rates (50–250 mm/min), with a maximum gauge factor (GF) of 4.3. Real-time motion tracking highlights their promise for wearable sensors and sustainable flexible electronics. Notably, the use of green hydroxyl-yne click chemistry and natural lignin-derived syringaldehyde ensures environmentally friendly and efficient modification, avoiding harmful reagents and minimizing waste. This study presents a sustainable and efficient approach to high-performance cellulose nanofiber hydrogels with promising applications in flexible electronics, motion sensing, and soft robotics.
研究领域:
材料科学
·
高分子化学
·
纳米技术
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DOI
PubMed
高影响因子
BIOPROCESS AND BIOSYSTEMS ENGINEERING
·
2019
·Vol. 42
·期 9
·1435-1445
·
IF 2.371
Cao Hanfei,Ji Yingchun,Zhou Jingwei,Zhuang Wei,Niu Huanqing,Gao Nan,Chen Yong,Liu Dong,Zhu Chenjie,Chen Xioachun,Ying Hanjie,Wu Jinglan
Vanillin and syringaldehyde are widely used as flavoring and fragrance agents in the food products. The potential of a macro-mesoporous adsorption resin was assessed for separation of these binary mixtures. This work focuses on modeling of the competitive adsorption behaviors and exploration of the adsorption mechanism. The characterization results showed the resin had a large BET surface area and specific pore structure with hydrophobic properties. By analysis of the physicochemical properties of the solutes and the resin, the separation mechanism was mainly contributed by hydrophobic effect. Subsequently, the competitive Langmuir isotherm model was used to fit the competitive adsorption isotherms. The pore diffusion coefficient was obtained by macropore diffusion model. Afterwards, a mathematical model was established to predict the breakthrough curves of the binary mixture at various operating conditions. The data and model presented are valuable for design and simulation of the continuous chromatographic separation process.
研究领域:
食品科学
·
化学工程
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Qian Lou,Yixiao Wu,Huijun Ding,Benhao Zhang,Weihao Zhang,Yan Zhang,Liu Han,Mengting Liu,Tao He,Jiayou Zhong
As a new type of environmental pollutant, environmental antibiotic residues have attracted widespread attention, and the degradation and removal of antibiotics has become an engaging topic for scholars. In this paper, Novozym 51003 industrialized laccase and syringaldehyde were combined to degrade sulfonamides in aquaculture wastewater. Design Expert10 software was used for multiple regression analysis, and a response surface regression model was established to obtain the optimal degradation parameters. In the actual application, the degradation system could maintain a stable performance within 9 h, and timely supplement of the mediator could achieve a better continuous degradation effect. Low concentrations of heavy metals and organic matter would not significantly affect the degradation performance of the laccase–mediator system, making the degradation system suitable for a wide range of water quality. Enzymatic reaction kinetics demonstrated a strong affinity of sulfadiazine to the substrate. Ten degradation products were speculated using high-resolution mass spectrum based on the mass/charge ratios and the publication results. Four types of possible degradation pathways of sulfadiazine were deduced. This work provides a practical method for the degradation and removal of sulfonamide antibiotics in actual sewage.
研究领域:
环境科学
·
废水处理
·
生物技术
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DOI
PubMed
高影响因子
Toxins
·
2020
·Vol. 12
·期 8
·476
·
IF 3.531
Zhimin Zhou,Renkuan Li,Tzi Bun Ng,Yunyun Lai,Jie Yang,Xiuyun Ye
Aflatoxin B1(AFB1) is a known toxic human carcinogen and can be detoxified by laccases, which are multicopper oxidases that convert several environmental pollutants and toxins. In this study, a new laccase that could catalyze AFB1degradation was purified and identified from the white-rot fungusCerrena unicolor6884. The laccase was purified using (NH4)2SO4precipitation and anion exchange chromatography, and then identified as Lac 2 through zymogram and UHPLC-MS/MS based on the Illumina transcriptome analysis ofC. unicolor6884. Six putative laccase protein sequences were obtained via functional annotation. Thelac 2cDNA encoding a full-length protein of 512 amino acids was cloned and sequenced to expand the fungus laccase gene library for AFB1detoxification. AFB1degradation by Lac 2 was conducted in vitro at pH 7.0 and 45 °C for 24 h. The half-life of AFB1degradation catalyzed by Lac 2 was 5.16 h. Acetosyringone (AS), Syrinagaldehyde (SA) and [2,2′ -azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid)] (ABTS) at 1 mM concentration seemed to be similar mediators for strongly enhancing AFB1degradation by Lac 2. The product of AFB1degradation catalyzed by Lac 2 was traced and identified to be Aflatoxin Q1(AFQ1) based on mass spectrometry data. These findings are promising for a possible application of Lac 2 as a new aflatoxin oxidase in degrading AFB1present in food and feeds.Keywords:laccase;Cerrena unicolor;aflatoxin B1;biodegradation;detoxification;product;transcriptomeKey Contribution:A product identified to be AFQ1was found from Lac 2-mediated AFB1degradation, indicating that AFB1would be transformed during Lac 2-mediated AFB1degradation.
研究领域:
微生物学
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生物技术
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环境科学
·
毒理学
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DOI
PubMed
高影响因子
Journal of Biobased Materials and Bioenergy
·
2022
·Vol. 16
·期 1
·117-126
·
IF 0.687
Feng Nianjie,She Shaowen,Hu Chuanqin,Wu Qian
To find new plant-derived antitumor drugs, hydrolysate and fractions of poplar were analyzed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay for their inhibitory effect against liver cancer HepG-2 cells. Strong cytotoxicity of hydrolysate was revealed at
processing temperature of 180 °C or above. The hydrolysate formed at 180 °C was sequentially extracted using organic solvent to obtain five fractions, and only the diethyl ether-soluble fraction (F
De) showed specific cytotoxicity. The eluted fraction of acetone/n-hexane
(F
1) was further isolated by column chromatography separation from the F
De fraction at a yield of 70%, and could severely decrease cell viability. LC-MS chromatography indicated that 5-hydroxymethyl furfural, ρ-hydroxybenzoic acid and syringaldehyde
were the main compounds in the F
1 fraction. Furthermore, the results of flow cytometry, Western blotting, and polymerase chain reaction indicated that syringaldehyde could tightly control the growth and metabolism of HepG-2 cells. The findings could move forward the value-added
applications of lignocellulosic hydrolysate on traditional medicines.
研究领域:
植物学
·
遗传学
·
肿瘤学
·
药理学
·
分析化学
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DOI
高影响因子
ACS Catalysis
·
2023
·
IF 12.9
Yuting Zhu,Yuhe Liao,Luying Lu,Wei Lv,Jing Liu,Xiangbo Song,Jingcheng Wu,Lei Li,Chenguang Wang,Longlong Ma,Bert F. Sels
Facile oxidation is a promising technology to valorize lignocellulosic biomass toward high-value chemicals and cellulose. However, the carbon efficiency is restricted by inevitable dissolution and conversion of carbohydrates and the condensation and degradation of lignin and monophenolics. Herein, we report the use of CuO nanoparticles (NPs) to oxidatively fractionate lignocellulose with O2 in aqueous NaOH under mild conditions, achieving over 80% carbon efficiency. Lignin was converted to aromatic aldehyde monomers (up to 48.6 wt %, mainly vanillin and syringaldehyde), and the yield can surpass the theoretical value (on the basis of the β-O-4 bond content) due to cleavage of other bonds. This was proven by several model compounds with different interlinkages. All hemicelluloses were transformed toward water-soluble small acids (mainly oxalic acid). As it was protected by the complexation of Cu cations, up to 80% cellulose was obtained as a white crystalline residue with high purity (>95%), which has potential applications in the production of materials and chemicals.
研究领域:
化学工程
·
材料科学
·
生物技术
·
可持续化学
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Zhenju Bi,Xinqi Gao,Zhencui Bi,Li Yan,Yafang Lei,Chan Li
The wood used for construction should be able to cope with complex environments, especially water and decay fungi. To enhance the wood’s decay resistance and hydrophobicity, aromatic aldehydes such as vanillin, cinnamaldehyde, syringaldehyde, or protocatechualdehyde were grafted onto wood. The poplar ( Populus tomentosa Carr.) wood was impregnated with (3-aminopropyl) triethoxysilane (APTES) to aminate its cell wall, and then aromatic aldehydes were grafted onto the aminated wood through a Schiff base reaction. The findings indicated that this technique enhanced the leaching resistance of aromatic aldehydes in the wood. Furthermore, the durability level of wood grafted by vanillin or cinnamaldehyde was very durable (mass loss<5 %) even after the leaching test. Modified wood has hydrophobicity, manifested by strong anti-swelling efficiency (ASE), low equilibrium moisture content (EMC), and high water contact angle (>90°, air-dried) in 65 % relative humidity and saturated environments. The characterization of modified wood and its model compounds indicated that aromatic aldehydes were grafted onto the hydroxyl groups of wood through Schiff base under the mediation of APTES. This study obtained an outdoor green building wood with hydrophobic and decay resistance for outdoor use and expanded the application of aromatic aldehydes in wood.
研究领域:
材料科学
·
木材科学与技术
·
环境科学
·
化学工程
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Rong Wu,Minmin Zou,Jiarui Cao,Manman Shi,Guobin Jiang,Fuliang Cao,Erzheng Su
Ginkgo seeds are rich in nutrients and bioactive compounds, but they cause poisoning after excessive consumption, thus limiting their application. In this work, enzymatic degradation technology was employed to remove ginkgotoxins presented in ginkgo seeds, including 4’-O-methylpyridoxine (MPN) and MPN-5’-glucoside (MPNG). Through the screening of four oxidases and ten reaction mediators, the laccase-syringaldehyde system was successfully established. After optimizing the reaction conditions using response surface methodology (RSM), ginkgotoxins in both raw and boiled ginkgo seed powder was completely degraded at a temperature of 40 °C and a solvent to solid ratio (60 mL/g) of the ginkgo seed powder suspension within 3 h. Furthermore, the main nutritional components of detoxified ginkgo seed powder did not exhibit significant changes, but there was inevitably a decrease in the content of bioactive compounds. Finally, an acute oral toxicity assessment demonstrated that the detoxified ginkgo seed powder was virtually non-toxic. Therefore, enzymatic degradation using the laccase-syringaldehyde system has the potential to be a simple and effective approach for removing ginkgotoxins from ginkgo seed powder, thereby meeting the safety requirements for ginkgo products.
研究领域:
食品科学
·
毒理学
·
酶学
·
营养学
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DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Na Shi,Haoyu Wang,Zhenjiang Li,Min Zhang,Xin Zou,Yanqi Shi,Xin Yuan,Jiahui Ma,Chunyu Li,Kai Guo
A series of unsymmetric bio-based epoxy monomers were synthesized using lignin-derived monophenols (vanillin and syringaldehyde) and methyl ketone (piceol, zingiberone, and raspberry ketone). The obtained bisphenols are analog of retrochalcone (echinatin), which is isolated from the root of liquorice. The structure of lignin-based epoxy monomers and the obtained epoxy thermosets was confirmed by nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopy. The curing behavior of the epoxy thermosets was determined by differential scanning calorimetry (DSC) at different ramp rates (5°C/min, 10°C/min, 15°C/min, and 20°C/min). The activation energy of the bio-based epoxy resins was from 50.59 KJ mol −1 to 61.36 KJ mol −1 according to Kissinger equation. The glass transition ( T g ) of the obtained epoxy thermosets was higher than that of DGEBA-based resins (74.8°C vs 61.9°C) based on dynamic mechanical analysis (DMA). Thermomechanical properties of the corresponding thermosets were conducted on thermogravimetric analysis (TGA) and tensile test (TA). They exhibited comparable thermal stability with that of DGEBA based resins.
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DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Xueying Shan,Qixin Huang,Jiao Gao,Hanchao Liu,Jingru Wang,Jinchun Li
Epoxy resin (EP) coating is characterized by high flammability, low resilience, and a pronounced susceptibility to aging. In this study, a novel chitosan-based Schiff base derivative flame retardant, STLCP, was synthesized using tert -butyl dimethyl chlorosilane, syringaldehyde, and DOPO as raw materials, with chitosan as the basic skeleton. The resulting EP/STLCP composites had excellent flame retardancy, UV shielding, and high toughness. The incorporation of only 1 wt % STLCP can effectively suppress the risk of combustion-induced melt dripping in EP. At a 6 wt % loading, the EP composite attained a UL-94 V-0 classification and an LOI of 32.3 %. In addition, the EP/STLCP-6 % composite demonstrated reductions of 46.3 %, 12.8 %, and 14.8 % in total heat release (THR), peak heat release rate (PHRR), and smoke production rate (SPR), respectively, when compared with pure EP. Flame retardant mechanistic analysis revealed that adding STLCP notably enhanced the char layer's graphitization degree, diluted combustible gas concentrations, and contributed synergistically to flame retardation in both the condensed and gas phases. In addition, STLCP exhibited the excellent UV aging resistance to EP, as the T UVA and T UVB transmittance values were reduced to below 3 %. Regarding mechanical properties, STLCP improved the tensile strength and impact toughness of EP by up to 43.3 % and 40.0 %, respectively, and improved the elongation at break by 24.6 %. Moreover, the EP/STLCP composite was shown to possess excellent thermal conductivity. This work is expected to provide a promising strategy developing green, eco-friendly, and multifunctional EP composites.
研究领域:
材料科学
·
高分子化学
·
火灾安全工程
·
功能材料
·
环境友好材料
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DOI
高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.7
Hongjuan Zhu,Dan Zhou,Bianxia Li,FanYang,Yujie Chen,Jiashu Liu,Wanli Cheng,Huanan Li,Zhengbing Jiang
A novel biocatalyst, Bp Lac@IPM, was constructed to enhance the remedi- ation of antibiotic wastewater. Compared with Bp Lac, Bp Lac@IPM showed better catalytic activity, stability, and reusability. Moreover, Bp Lac@IPM exhibited exceptional removal performance for quinolone antibiotics. Specifically, its ciprofloxacin removal efficiency reached 94.70%, which was 8.54% and 48.37% higher than that of Bp Lac and IPM, respectively. Furthermore, it effectively removed various quinolone antibiotics, including ciprofloxacin, norfloxacin, enrofloxacin, and moxifloxacin, with removal efficiencies ranging from 77.08% to 94.70%. Biotoxicity evaluation confirmed that Bp Lac@IPM treatment reduced the biotoxicity of ciprofloxacin. The biological toxicity of ciprofloxacin was 31% and 13% lower than that after IPM and Bp Lac treatment, respectively. Liquid chromatography-tandem mass spectrometry analysis identified the primary degradation pathways of ciprofloxacin as defluorination, decarboxylation, and cleavage of the piperazine ring. Further studies demonstrated a synergistic effect between adsorption and biocatalysis in Bp Lac@IPM, with a synergistic coefficient of 148.31% at 10 min. Mechanism analysis revealed that quinolone antibiotics were adsorbed onto Bp Lac@IPM via electrostatic attraction, hydrogen bonding, and hydrophilic interactions. Subsequently, the high concentration of quinolone antibiotics near Bp Lac@IPM promoted biocatalysis. This study provides a novel and efficient strategy for the removal and detoxification of quinolone antibiotics
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高影响因子
BIORESOURCE TECHNOLOGY
·
2026
·
IF 9
Tianyin Huang,Yifan Yu,Wentao Zhang,Yue Zhao,Yiliang Tao,Wenguang Huang,Bingdang Wu
Antibiotic residues, as emerging environmental contaminants, have raised significant concerns, underscoring the urgent need for efficient laccase–mediator systems (LMS) to facilitate their removal. However, the screening and design of high-performance mediators remain largely empirical, lacking robust theoretical guidance. In this study, we systematically evaluated the kinetic performance of Trametes versicolor laccase coupled with 19 redox mediators for sulfamethoxazole (SMX) degradation in the presence of humic acid (HA). Among the mediators tested, syringaldehyde (SA) exhibited superior degradation efficiency. By promoting laccase-catalyzed generation of phenoxyl radicals, the kinetics of antibiotic removal was improved. Toxicity assessments revealed that the degradation products of SMX in the SA-mediated LMS with HA exhibited low ecological risk. The system maintained high SMX degradation performance in various real water matrices (with a removal rate of up to 95 % and a reaction rate of up to 0.11 min −1 ), demonstrating its applicability in environmentally relevant scenarios. Furthermore, we established a structure–activity relationship between the electronic properties of natural mediators and SMX removal efficiency, demonstrating that catalytic performance is closely correlated with frontier molecular orbital energy levels and HOMO (Highest Occupied Molecular Orbital)–LUMO (Lowest Unoccupied Molecular Orbital) gaps. High-efficiency mediators typically possess higher HOMO energies and narrower energy gaps. This study offers molecular-level insights and design principles for developing efficient mediators, advancing the targeted application of LMS technology for the remediation of emerging contaminants.
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PubMed
高影响因子
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