Food Chemistry-X
·
2026
·
IF 9.2
Tian-Pei Zhao,Jing-Yu Chen,Yue-Hua Li,Chen-Xia Zhang,Yu-Xiang Ma,Zhao Qin,Xue-De Wang,Hua-Min Liu,Rui-Fu Cui,Lei Wang,Yong-Jun Xu,Hai-Ming Shi
This study systematically investigated the antioxidant activities of seven lignin-derived volatile phenolics in sesame oil. Using in vitro assays and a purified sesame oil (PSO) model, 4-vinylguaiacol exhibited the strongest antioxidant capacity, followed by 4-ethylguaiacol, 4-methylphenol, and guaiacol, all of which outperformed vanillin, acetovanillone, and isoacetovanillone. The former four compounds effectively enhanced PSO stability, as evidenced by prolonged oxidation induction time, increased thermal decomposition temperature, and suppressed rise of various oxidation indices during accelerated storage. Quantum chemical calculations supported that 4-vinylguaiacol had the strongest antioxidant activity, consistent with experimental ranking. Binary interaction analysis revealed antagonism between 4-vinylguaiacol and sesamol, indicating that these two compounds should not be combined in antioxidant formulations, whereas additive effects were observed with γ -tocopherol. This study provides a theoretical basis for the rational design of antioxidant formulations. As natural antioxidants, 4-vinylguaiacol and its combination with γ -tocopherol show promising application prospects in commercial edible oil systems.
✓ 已验证
DOI
PubMed
高影响因子
ACS Catalysis
·
2023
·
IF 12.9
Jie Li,Zhen Li,Jing Dong,Renbo Fang,Yingnan Chi,Changwen Hu
The targeting cleavage of lignin into value-added aromatic monomers has attracted increasing attention. Although the base-catalyzed depolymerization of lignin has been developed, the use of excess corrosive bases and their poor recyclability limit their industrial implementation. Herein, a catalytic amount of solid base K7HNb6O19 (KNb6) coupled with copper-modified graphitic carbon nitride (Cu/C3N4) shows enhanced catalytic performance for the oxidative cleavage of β-O-4 lignin linkages using molecular oxygen. Due to the synergetic effect between KNb6 and Cu/C3N4, 96% of the β-O-4 ketone model was converted under relatively mild conditions, and phenol (yield: 90%) and other aromatic monomers (yield: 90%) were obtained. Moreover, KNb6–Cu/C3N4 is robust, and its catalytic activity is basically maintained after five cycles. Experimental and theoretical studies (spectroscopic analysis, control experiments, kinetic study, density functional theory calculations, etc.) reveal that the surface basic O atoms of KNb6 can simultaneously activate the Cβ–H bond of β-O-4 ketone to promote the insertion of molecular oxygen, and subsequently, Cu/C3N4 catalyzes the selective cleavage of the Cα–Cβ bond. The catalysts were also active for the oxidative cleavages of other lignin models and oxidized organosolv lignin.
✓ 已验证
产品关联
DOI
高影响因子
OPTICS EXPRESS
·
2023
·Vol. 31
·期 5
·8190-8200
·
IF 3.8
Fei Huang,Ziyang Yan,Sikun Zhou,Baoshan Gu,Sha Wang,Shutong Wang,Shouhuan Zhou
The performance of electrodes is a key factor affecting the development of smart fabrics. The preparation of common fabric flexible electrodes has defects such as high cost, complicated preparation, and complex patterning that limit the development of fabric-based metal electrodes. Therefore, this paper presented a simple fabrication method for preparing Cu electrodes using selective laser reduction of CuO nanoparticles. By optimizing laser processing power, scanning speed, and focusing degree), we prepared a Cu circuit with an electrical resistivity of ∼ 5.53 µΩ.m. Based on the photothermoelectric properties of Cu electrodes, a white light photodetector is developed. The detectivity of the photodetector reaches ∼2.14 mA/W at a power density of 10.01 mW/cm2. This method is instructive for preparing metal electrodes or conductive lines on the surface of fabrics, and provides specific techniques for manufacturing wearable photodetectors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMACROMOLECULES
·
2023
·
IF 6.2
Dandan Wu,Yilin Wang,Shuang Qi,Yufeng Yuan,Jiaqi Guo,Gegu Chen,Mehraj Ahmad,Bo Jiang,Yongcan Jin
The abundant and low-cost features of lignin in combination with its natural activities make it a fascinating biopolymer for valorization, especially, in agriculture as an active plant growth regulator. However, the structure–activity relationship of lignin in regulating plant growth and metabolism remains unclear. In this work, rice-straw-based low-molecular-weight (LWM, 1860 Da) and high-molecular-weight (HMW, 6840 Da) alkali–oxygen lignins are structurally and comparatively investigated to understand their effects on the growth and metabolism of maize seedlings. The results indicate that LMW lignin at 150 mg·L–1 displays early growth stimulation in maize. Under the optimal concentration of LMW lignin (25 mg·L–1), the growth of maize shoot is ∼83% higher than that of the control one. Furthermore, LMW lignin also has a positive effect on the upregulation of photosynthetic pigment, carbohydrate, and protein synthesis. In contrast, HMW lignin shows an overall inhibitory effect on the above-mentioned biochemical parameters. Based on the structural characterization, LMW lignin contains a higher syringyl/guaiacyl ratio (0.78) and carboxyl content (1.64 mmol·g–1) than HMW lignin (0.43 and 1.27 mmol·g–1, respectively), which demonstrates that methoxyl and carboxyl content of lignin may play a decisive role in seedling growth.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2023
·
IF 5.5
Shaoqing Wang,Yan Jiao,Zhihe Li,Zhen Wan,Yu Han,Weiming Yi
In this paper, a surface encapsulation method has been developed to synthesize the HZSM-5 @Al-KIT-6 hierarchical zeolites, due to the poor mono-aromatic hydrocarbons (MAHs) selectivity and rapid coke deactivation during the catalytic upgrading lignin pyrolysis vapors. Results showed that the acidity and accessibility of HZSM-5 @Al-KIT-6 hierarchical zeolite can be modulated by changing the TEOS/HZSM-5 mass ratio during catalyst synthesis. The three-dimensional (3-D) cubic mesoporous shell can capture the bulky phenolic oligomers and pre-crack for further reforming. The highest MAH content (44.03%) and lower polycyclic aromatic hydrocarbons (PAHs) (23.79%) were produced when the TEOS/HZSM-5 mass ratio was 1.0. The hierarchical zeolites improved the yield of xylenes due to the enhanced alkylation reaction. In addition, the micro-mesoporous highway reduced the formation of coke deposition. The catalytic mechanism of hierarchical zeolites was then proposed based on the obtained results. This study provides a reference for pilot-scale experiments for the catalytic upgrading lignin pyrolysis vapors.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Jing Tian,Jingqian Chen,Jiaqi Guo,Wenyuan Zhu,Mohammad Rizwan Khan,Qingquan Fu,Yongcan Jin,Huining Xiao,Junlong Song,Orlando J. Rojas
We introduce Kraft lignin colloids produced by destabilization of a kraft lignin solution by pH shift from 2 to 11. The system includes lignin particles and hydrocolloid aggregates in equilibrium (KLP), which are used to control the emulsifying energy and to stabilize oil-in-water emulsions under high energy at pH 11 and 7, yielding excellent stability (at least three months with no creaming). We investigate emulsify technology (ultrasonication and homogenization), energy input (high energy or low energy), particle desorption, drop size, and rheology on the stability of KLP-based Pickering emulsions according to the system’s pH. The ultrasonication leads to fine, stable and homogenous lignin emulsions without observing macroscopic creaming phenomenon, whereas homogenization only limits to alkaline condition. Regarding homogenization process, increasing the energy input helps to reduce the emulsion droplet size and consequently improves emulsion stability. In addition, the emulsion produced at acidic conditions always presented excellent stability, independent of the emulsify parameters. Considering the synergistic effects of emulsification protocol, surface activity, and particle interactions, the results indicate the possibility of extending the applications of kraft lignin as a Pickering stabilizer in neutral and alkaline conditions. It also creates a promising method to control the stability and emulsion microstructure in the industrial KLP based emulsion preparation process.
✓ 已验证
产品关联
DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2023
·
IF 7.5
Jiantao Su,Haihong Xia,Fei Ge,Xiaohui Yang,Minghao Zhou,Jianchun Jiang
5-Hydroxymethylfurfural (HMF) is a very important chemical intermediate, while it can be hydrogenated into various value-added chemicals. However, the hydrogenation of HMF over non-precious metal catalysts still remains as a challenging problem. In this study, lignosulfonate (LS) was used as carbon resource, and successfully introduced into MOFs structure. Then, a series of lignin-MOF derived catalysts (Ni n Co-MOF-LS) were prepared by the hydrothermal method with different ratios of Ni and Co metals. The selective conversion of hydroxymethylfurfural (HMF) to 5-methylfurfuryl alcohol (MFA) was achieved over Ni n Co-MOF-LS catalyst in a N 2 atmosphere with isopropanol as solvent. The Ni/Co metal ratios and calcination temperature played a key role in the catalytic performance of the catalyst. The catalysts showed good catalytic performance in the selective hydrogenation of HMF to MFA through an in-depth study of various reaction parameters such as temperature, pressure, reaction time and catalyst dosage. The coordination of lignosulfonate and MOFs provide a novel alternative for the utilization of lignin resource and the upgrading of biomass-derived chemicals.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Jiang-Meng Yuan,Ke Wang,Ting-Ting Su,Bing-Yu Chi,Wen-Feng Ren,Run-Cang Sun
Lithium (Li) metal batteries are deemed to an outstanding candidate of next-generation energy storage instruments due to their low electrochemical potential as well as high theoretical capacity. Nonetheless, the uncontrolled dendrite growth of Li and side reaction occurrence of Li metal anodes hamper their application. In this work, we fabricated an organic corncob lignin /inorganic lithium nitride composite layer by a facile in-situ coating method. For one thing, the organic corncob lignin layer can avoid direct contaction of Li with electrolyte, reduce the occurrence of undesirable reactions, and enhance the stability of electrode/electrolyte interface. For another, the component of inorganic lithium nitride in the composite layer can facilitate the ion transportation between electrolyte and Li metal anodes, increase mechanical properties of the film, decrease the nucleation overpotential, and eventually suppress the growth of Li dendrite. The Li metal anodes with composite protective layers exhibit good cycling property of 2000 h at 1.5 mA cm −2 with 1.5 mAh cm -2 . The Li-S full batteries assembled with Li metal anodes coated by composite protective layers show good cycling performance of 513.7 mAh g -1 after 300 cycles in contrast to bare Li. This study provides a simple coating method to fabricate artificial solid electrolyte interphase layer and promotes to realizing stable and safe Li-metal batteries and recycling the lignin from industrial waste.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Yuan Li,Qi Shen,Shengren Li,Yuyuan Xue
The high quantum-yield (QY) lignin fluorescence material at solid state was obtained via the polymer confinement strategy, using polyvinyl alcohol (PVA) as polymer matrix and organic solvent lignin (OL) as luminescent material. The absolute QY of lignin/PVA film could reach 13.68 % by optimizing the raw material of OL, of which was even higher than that in THF medium due to their hydrogen bond interaction for inhibiting aggregation and rigid environment for decreasing molecular rotation and vibration. In addition, under the encapsulation of PVA, the resistance of photobleaching of lignin fluorescence was also enhanced. Finally, OL was proved as a natural ratiometric fluorescence pH sensor from the electronegativity change of phenylpropane unit, and the fluorescence of lignin/PVA film showed a naked-eye recognition for spoiled pork detection. This work provided a new perspective to lignin fluorescence for really using as a feedstock for luminescent materials.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Changzhou Chen,Na Zheng,Weixin Wu,Mengqi Tang,Wenyao Feng,Wei Zhang,Xiangyu Li,Yan Jiang,Jinhui Pang,Douyong Min,Lianhua Fu
Conductive hydrogels have attracted extensive interest owing to its potential in soft robotics, electronic skin, and human monitoring. However, insufficient mechanical properties, lower adhesivity, and unsatisfactory conductivity seriously hinder potential applications in this emerging field. Herein, a highly elastic conductive hydrogel with a combination of favorable mechanical properties, self-adhesiveness, and excellent electrical performance was achieved by the synergistic effect of aminated lignin (AL), polydopamine (PDA), polyacrylamide (PAM) chains, and biomass carbon aerogel (C-SPF). In detail, AL was applied to induce slow oxidative polymerization of DA for preparing the sticky hydrogel containing PDA. Then, C-SPF carbon aerogel was used as a matrix to construct a dual-network structured composite hydrogel by combining with the hydrogels derived from PDA, AL, and PAM. The as-prepared conductive hydrogel displayed excellent mechanical performance, strong adhesive strength, and repeatable adhesivity. The prepared hydrogel-based pressure sensor possessed fast response (0.6 s loading and 0.8 s unloading stress time), high response (maximum RCR = 1.8 × 104), wide working pressure range (from 0 to 240.0 kPa), and excellent durability (stable 500 compression cycles with 30% deformation). In addition, the prepared sensor also displayed ultrahigh sensitivity (170 kPa–1), which was near 4 orders of magnitude higher than the conventional lignin-modified PAM hydrogels. The multiple interactions between hydrogel components and the mechanical properties of hydrogel were also verified by molecular dynamics investigation. Moreover, the excellent cytocompatibility and antibacterial activity of this composite hydrogel ensured high potential in various applications such as human/machine interaction, artificial intelligence, personal healthcare, and wearable devices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2023
·Vol. 26
·期 3
·1488-1500
·
IF 9.8
Changzhou Chen,Xialin Ji,Yongzhi Xiong,Jianchun Jiang
Biomass appears to be a potential candidate for the preparation of porous carbon materials with wide applications for catalytic fields due to its low price, green sustainability and natural hierarchical porous structure. Here, we designed a novel NixCuy/BC catalyst with a unique hollow sphere structure derived from a biomass puffball, which exhibited a superior catalytic transfer hydrodeoxygenation of VAN to value-added MMP products with an ∼100% vanillin (VAN) conversion and over 88% selectivity of 2-methoxy-4-methylphenol (MMP) products in the absence of additional hydrogen. The good catalytic activity performance of the NixCuy/BC catalysts was attributed to the NiCu alloy with a unique hollow sphere structure, high dispersion and electron transfer. Density functional theory (DFT) calculation results also indicated NiCu alloy as the main catalytic sites. This work not only provided a cheap and efficient hydrodeoxygenation catalyst for VAN hydrodeoxygenation, but also offered new insights for designing novel and unique biomass-based carbon materials for biomass utilizations or other widespread applications.
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 13
·2806
·
IF 5
Haichuan Ye,Yuan He,Haichao Li,Tingting You,Feng Xu
Three-dimensional (3D) printing is regarded as a novel technique to realize the customized production of films. However, the relative lack of printable materials with excellent mechanical properties and tailored functionalities seriously restricts its wide application. Herein, a promising multifunctional 3D printing filament was fabricated by incorporating lignin into the polylactic acid (PLA) matrix and firstly applied to film production. The results indicate that lignin was an excellent mechanical reinforcement of the PLA matrix, especially for toughening. Only 0.5% lignin doping improved the toughness by 81.8%. Additionally, 3D-printed films with 0.5–5% lignin exhibited excellent ultraviolet (UV)-blocking capability of 87.4–99.9% for UVB and 65.6–99.8% for UVA, as well as remarkable antioxidant properties, ranging from 24.0% to 79.0%, and high levels of haze, ranging from 63.5% to 92.5%. Moreover, the prepared PLA/lignin (P/L) films based on 3D printing achieved the customization of film production and have potential applications in the fields of packaging, electronic products, medical care, and so forth. Overall, this work not only enriches the 3D printing composites with tailored multifunctionality but also brings the promising potential for the production of customized films.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）