FOOD CHEMISTRY
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2026
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IF 10.4
Zipeng Zheng,Jun Hu,Weijie Zhou,Hongqing Yuan,Jianxia Sun,Yongbin Xu,Weibin Bai
Anthocyanins are a class of water-soluble flavonoid pigments widely distributed in plants, characterized by their flavylium cation core. Glycosylation modifications exert significant effects on the biological activities of anthocyanins with identical aglycones. This study accomplished the first chemical syntheses of cyanidin-3-O-galactoside (C3Gal) and cyanidin-3-O-arabinoside (C3Ara), providing a general glycosylation strategy. The configurations of β-D-galactopyranoside and α-L-arabinopyranoside were determined by 2D NMR. Comparative analysis of cyanidin-3-O-glucoside (C3Glu), C3Gal, and C3Ara revealed that C3Glu was the most stable, whereas C3Ara and C3Gal exhibited superior antioxidant activity. C3Ara also showed the strongest inhibition against α-amylase (IC 50 = 98.16 μM), consistent with molecular docking predictions. These results reveal the key structure-activity: hexoses (glucose, galactose) have higher stability and reduced activity. Pentosyl arabinosides have higher biological activity. This work provides a reliable preparation method and research direction for anthocyanin glycosides.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Wendong Wang,Fangsong Guo,Longmei Shang,Kang Sun,Dandan Song,Jianchun Jiang,Guowu Zhan
Pressure-driven reconstruction forms Ni-O-K single-atom interfaces. • Near-equilibrium CO 2 conversion (∼58%) with ∼100% CO selectivity. • Exceptional stability over 200 h without sintering or deactivation. • Ni-O-K sites lower E a and suppress methanation. • Carboxyl pathway dominates over formate route. Achieving simultaneous high activity, selectivity, and stability in single-atom catalysts (SACs) under high-temperature conditions remains a significant challenge, primarily due to the difficulty in precisely controlling the coordination environment of metal centers. Here, we demonstrate that alkali ion (e.g., K + ) modification of both Ni single atoms and their carbon nitride (CN) support enables exceptional performance in the reverse water-gas shift (RWGS) reaction. The resulting Ni@K-CN catalyst achieves near-equilibrium CO 2 conversion with nearly 100% CO selectivity across a broad temperature range (400–600 ℃), alongside remarkable long-term stability. This performance substantially surpasses that of the K-free analogue and ranks among the best-reported non-noble metal RWGS catalysts. Operando studies reveal that the catalyst undergoes a thermodynamically driven in-situ reconstruction under high pressure reaction conditions, forming atomically dispersed Ni-O-K interfacial sites within a restructured carbon nitride matrix. Density functional theory calculations reveal that these sites markedly lower the apparent activation energy ( E a = 41.5 vs. 131.4 kJ·mol −1 ), modulate the electronic structure of Ni and surface-adsorbate interactions, and thereby promote a low-energy-barrier carboxyl pathway while kinetically suppressing methanation. This work establishes a design strategy based on alkali-mediated dynamic reconstruction to create highly stable and selective SACs for demanding high-temperature catalytic processes. Download: Download high-res image (174KB) Download: Download full-size image
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FOOD HYDROCOLLOIDS
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2022
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IF 11.504
Zhiming Gao,Chen Gao,Wenxin Jiang,Longquan Xu,Bing Hu,Xiaolin Yao,Yanlei Li,Yuehan Wu
It has been a great challenge of using natural polysaccharides to stabilize food emulsions , due to their poor amphiphilicity. In this study, a novel strategy of using polysaccharide to stabilize O/W emulsions was developed, through in situ crosslinking of sodium alginate on oil-water interface. During the emulsifying process, the acetic acid migrated across the interface, and induced the released of calcium ions , which immediately crosslinked the sodium alginate on interface. Results showed that the oil droplets were encapsulated in the integral polysaccharide shells. The droplet size of the emulsions located in the range from 20 to 200 μm. The concentration of sodium alginate and HAc, as well as the mixing rates were showed to be positively related with the thickness of the shell. However, excess calcium ions would disintegrate the shell structure. Additionally, the interfacial crosslinked sodium alginate stabilized emulsions exhibited excellent physical stability under centrifugating and freeze-thawing.
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Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 5
·950-958
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IF 7.779
Shifei Kang,Zhihao Zhang,Maofen He,Zirou Fang,Di Sun,Lulu Zheng,Xijiang Chang,Lifeng Cui
Co-modification of graphitic carbon nitride (g-C3N4) photocatalysts can maximally optimize their intrinsic photoelectric structures, but usually involves complex multistep reactions, and thus is challenging because structural collapse and active site decay usually happen due to the complex process, over-treatment or conflict of different modification strategies. In this work, potassium iodate (KIO3), an edible salt additive, was used as a critical waste-free modifier in the thermal polymerization of g-C3N4, leading to a fast and coordinated co-modification of g-C3N4 photocatalysts. The final g-CN-KIO3 photocatalyst demonstrated a superior and balanced optical absorption ability and semiconductor band structure. In visible-light-driven photocatalytic model tests, g-CN-KIO3 showed a 3.25 times higher Cr(VI) photoreduction rate and five orders of magnitude lower residual bacteria in a photocatalytic sterilization within 120 min compared with raw g-C3N4. The photocatalytic performance of g-CN-KIO3 also outperformed all of the controls without maximized K–I–O co-modification (CN-K, CN-I, CN-O, and CN-KI). Photocurrent and electrochemical impedance experiments suggest that the co-modified photocatalysts have a faster charge separation ability, which is attributed to the multiple K–I–O co-modifications inducing an optimized surface electronic structure and slower carrier recombination. This work provides a new way to simplify and coordinate complex multi-factor regulation of materials.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Longgong Xia,Kai Wang,Hongjun Wang,Zhihong Liu
Thermodynamic studies of the Mg-Te-O system have significant importance in improving Te recovery from pyrometallurgical processes and materials preparation in related fields. Ternary compounds, Mg 3 TeO 6 , Mg 2 Te 3 O 8 , MgTe 2 O 5 and MgTe 6 O 13 , in the Mg-Te-O system have been synthesized in the present study, and their decomposition behaviors at various atmospheric conditions have been experimentally studied with the TGA-DSC technique. Obtained results showed that: 1) Mg 3 TeO 6 started to decompose to MgO , TeO 2 , and O 2 at 1255.9 °C in the carrying gas of 20% O 2 - 80% Ar, and the initial decomposition temperature decreased along with decreasing oxygen concentration in the gas; 2) Mg 2 Te 3 O 8 decomposed to MgO and TeO 2 , and when the O 2 was rich in the gas, Mg 3 TeO 6 was also found in the product. The initial decomposition temperature of Mg 2 Te 3 O 8 was 832.1 °C, 839.2 °C, and 839.9 °C, when the O 2 concentration in the carrying gas was 20%, 0.1%, and 0.0001%, respectively; 3) The decomposition products of MgTe 2 O 5 were same with that of Mg 2 Te 3 O 8 , and its initial decomposition temperature decreased along with decreasing the O 2 concentration in the gas; 4) MgTe 6 O 13 decomposed to MgTe 2 O 5 and TeO 2 around 700 °C, and the initial decomposition temperature decreased with decreasing O 2 concentration in the gas. Along with increasing temperature, MgTe 2 O 5 converted to Mg 3 TeO 6 through oxidation reactions, and Mg 3 TeO 6 decomposed at elevated temperatures.
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Lubrication Science
·
2022
·Vol. 35
·期 1
·1-13
·
IF 1.307
Chao Ju,Qin Zhao,Xiaobo Wang
A series of protic ionic liquids (PILs) containing dibutyldithiophosphate were simply synthesised and used as lubricant additive in base emulsion. The physico-chemical and lubricating properties of PILs in emulsion were systematically investigated. The stability of prepared emulsions containing PILs were similar with base emulsions by particle size distribution tests. Compared with traditional additive of polysulfide, the PILs in emulsion exhibited superior lubricating properties under harsh conditions. Surprisingly, the oil-miscible O-PILs in emulsion showed better friction and wear reduction than water-miscible T-PILs in emulsion. The stable protective films formed on the steel surface by results of scanning electron microscope and X-ray photoelectron spectroscopy were the main reason for the preferable performance.
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JOURNAL OF POWER SOURCES
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2022
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IF 9.794
Chengwei Li,Yun Huang,Jiapin Liu,Jiepeng Chen,Xing Li,Mingshan Wang,Bingshu Guo,Yuanhua Lin
Organic redox-active materials are investigation hotspots for lithium ion storage due to their structural diversity and tunability. A large number of researches have focused on the organic materials of benzene para-substitution type. There are little investigations on benzene ortho-substitution type organic materials. Benzene ortho-substitution redox molecules are generally considered to be too close to the functional group to fully react, and conjugated structure is not as stable as that of para-substitution. However, we reported dilithium phthalate (Li 2 PA) anode active material for lithium ion battery . Interestingly, Li 2 PA anode has an excess capacity and reaches four-electrons reaction, and the lithium ions storage mechanism is explored: not only the two adjacent conjugated carbonyls can fully react, but also the rearranged benzene ring can accept two Li + ions. Li 2 PA anode has a high specific capacity of 674 mA h g −1 at 60 mA g −1 , with 91.7% capacity retention after 125 cycles (cycled for 4 months). Furthermore, it achieves high-rate capability, holding the specific capacity of 110 mA h g −1 at 4000 mA g −1 . This research shows that Li 2 PA can be used as organic active material for anode, opening up new possibility for organic anode development.
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JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
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2022
·Vol. 102
·期 14
·6555-6565
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IF 4.125
Nitong Bu,Liying Huang,Guoyu Cao,Jie Pang,Ruojun Mu
BACKGROUND The stabilization of oil-in-water (O/W) emulsions has long been explored. Assembly of polymer networks is an effective method for stabilizing O/W emulsions. Konjac glucomannan (KGM) is a plant polysaccharide and the network of KGM gel is a good candidate for stabilizing O/W emulsions based on its high viscosity and thickening properties. However, natural KGM has strong hydrophilicity and is not able to offer interfacial activity. Octenyl succinic anhydride (OSA) is a hydrophobic molecule, which is widely used as thickener and stabilizer in food emulsions. In this work, the amphiphilic biopolymer (OSA-KGM) was fabricated by modifying the KGM with OSA. Furthermore, OSA-KGM biopolymer was used to prepare O/W emulsions, which were then freeze-dried and used to prepare oleogels as fat substitute for bakery products. RESULTS OSA-KGM had advanced hydrophobicity with water contact angle 81.13° and adsorption behavior at the oil–water interface, with interfacial tension decreasing from 18.52 to 13.57 mN m −1 within 1 h. The emulsification of OSA-KGM remarkably improved the stability of emulsions without phase separation during storage for 31 days. Oleogels with OSA-KGM showed good thixotropic and structure recovery properties (approximately 100%) and low oil loss (from 69.5% to 50.4%). Cakes made from oleogels had a softer texture than cakes made from peanut oil and margarine. CONCLUSION Amphiphilic biopolymer OSA-KGM shows advanced interfacial activity and hydrophobicity. This paper provides an insight into preparing stable O/W emulsions with a new biopolymer and oleogels potentially applied as fat substitute in bakery products. © 2022 Society of Chemical Industry.
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Journal of Environmental Sciences
·
2022
·
IF 6.796
Jing Deng,Anhong Cai,Xiao Ling,Qian Sun,Tianxin Zhu,Qingsong Li,Xueyan Li,Weizhu Chen
As an active metabolite of venlafaxine and emerging antidepressant, O-desmethylvenlafaxine (ODVEN) was widely detected in different water bodies, which caused potential harm to human health and environmental safety. In this study, the comparative work on the ODVEN degradation by UV (254 nm) and UV-LED (275 nm) activated sodium percarbonate (SPC) systems was systematically performed. The higher removal rate of ODVEN can be achieved under UV-LED direct photolysis (14.99%) than UV direct photolysis (4.57%) due to the higher values of photolysis coefficient at the wavelength 275 nm. Significant synergistic effects were observed in the UV/SPC (80.38%) and UV-LED/SPC (53.57%) systems and the former exhibited better performance for the elimination of ODVEN. The degradation of ODVEN all followed the pseudo-first-order kinetics well in these processes, and the pseudo-first-order rate constant ( k obs ) increased with increasing SPC concentration. Radicals quenching experiments demonstrated that both ·OH and CO 3 · − were involved in the degradation of ODVEN and the second-order rate constant of ODVEN with CO 3 · − (1.58 × 10 8 (mol/L) −1 sec −1 ) was reported for the first time based on competitive kinetic method. The introduction of HA, Cl − , NO 3 − and HCO 3 − inhibited the ODVEN degradation to varying degrees in the both processes. According to quantum chemical calculation, radical addition at the ortho-position of the phenolic hydroxyl group was confirmed to be the main reaction pathways for the oxidation of ODVEN by ·OH. In addition, the oxidation of ODVEN may involve the demethylation, H-abstraction, OH-addition and C-N bond cleavage. Eventually, the UV-LED/SPC process was considered to be more cost-effective compared to the UV/SPC process, although the UV/SPC process possessed a higher removal rate of ODVEN.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
·
IF 8.025
Xiya Yang,Lingyuan Chen,Dong Ren,Shixing Wang,Zhaogang Ren
An O -hydroxyphenyl thiourea-modified chitosan ( OTCS ) with excellent Pb(II) adsorption performance and selectivity was prepared as an adsorbent. The structure and morphology of the adsorbent were systematically investigated by SEM, BET, FTIR, EDX , zeta-potential measurements, XPS and XRD. The impacts of the initial Pb(II) concentration, reaction time, temperature, pH value, and coexisting ions were explored. At pH 7 and 303 K, the maximal adsorption capacity of OTCS for Pb(II) was 208.33 mg/g, which was greater than those of other adsorbing materials reported in the literature. The metal ion adsorption kinetics and isotherm models were found to obey pseudo-second-order kinetics and the Langmuir isothermal model, indicating that the adsorption process was monolayer chemisorption. The adsorption process could proceed spontaneously, and the thermodynamic results revealed that the adsorption mechanism was an endothermic reaction. The ion exchange and chelation between the sulfur, nitrogen and oxygen groups on the adsorbent and lead ions endowed the material with excellent adsorption properties. Significantly, OTCS showed excellent selectivity toward Pb(II). Therefore, the adsorbent OTCS is expected to promote the wider application of chitosan in the adsorption of Pb(II).
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CHEMIE INGENIEUR TECHNIK
·
2021
·
IF 1.672
Hao Guo,Zheng Wan,Yanhong Li,Xiao He,Aisheng Huang
In this study, a graphene oxide (GO) membrane is developed for the separation of p -xylene (PX, 0.58 nm) from o -xylene (OX, 0.68 nm). Attributing to the suitable d-spacing size (0.58 nm), the GO membrane allows more PX to pass through than OX, leading to a high PX/OX selectivity. At 110 °C for the separation of equimolar PX/OX mixture, the PX/OX separation factor is 9.4 and PX flux is 145.3 g m −2 h −1 , respectively, which is promising for the separation of xylene isomers by pervaporation. The separation performance of the GO membrane is further confirmed by simulation studies.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 19
·50401
·
IF 2.52
Faming Yang,Chen Xiong,Yingfu Lian,Xiaojun Wang,Zhimei Wei,Shengru Long,Gang Zhang,Jie Yang
Water-in-oil emulsions separation plays a critical role in industrial wastewater treatment. Membrane technology has attracted much interest in water-in-oil emulsions separation field for its excellent separation performance and facile processing method. However, versatile membrane with better solvent-resistance is still absent in chemical industry. In this work, oxidized polyarylene sulfide sulfone (O-PASS) membrane was severed as substrate, on which a hydrophobicity surface was built via coating of octadecyltrichlorosilane (OTS). And polydopamine (PDA) layer was employed and acted as connector between OTS and O-PASS membrane due to its abundant active hydroxyl group. The maximum water contact angle was 132.6° indicating good hydrophobicity of the membrane. Finally, the OTS/PDA/O-PASS composite membranes showed good separation performance for corrosive emulsions: the rejection and flux were 93.0% and 10.0 L/m 2 h for water-in-dichloromethane emulsions, and the rejection and flux were 92.3% and 34.6 L/m 2 h for water-in-n-hexane emulsions. The OTS/PDA/O-PASS composite membrane is a new candidate membrane for water-in-oil emulsions separation. In addition, the superior performance of the composite membrane under harsh environment conditions ensures its usefulness in resistance aggressive solvent.
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