Foods
·
2022
·Vol. 11
·期 5
·657
·
IF 5.561
Huiyu Hu,Yuting Wang,Yousheng Huang,Yanpeng Yu,Mingyue Shen,Chang Li,Shaoping Nie,Mingyong Xie
Maillard reaction during food processing contributes to the formation of some unpleasant heat-induced toxicants including advanced glycation end products (AGEs) and 5-hydroxymethylfurfural (HMF). The current study prepared butter cookies fortified with two dietary natural antioxidants (catechins and curcumin) and two dietary hydrocolloids (pectin and chitosan), and investigated their effects on formation of free Nε-(carboxymethyl)lysine (CML)/Nε-(carboxyethyl)lysine (CEL), protein-bound CML/CEL and HMF and on the sensory qualities of butter cookies. Meanwhile, three typical α-dicarbonyl compounds were also determined to identify possible correlations between α-dicarbonyl intermediates and formation of these harmful heat-induced products in butter cookies. Experimental data showed that catechin exhibited the strongest inhibitory effects on formation of AGEs and HMF, but its addition would impair the color and taste of cookies. On the other hand, chitosan was not so effective in inhibiting AGEs and HMF as compared to catechin, but its addition could increase the sensory qualities of butter cookies.Keywords:advanced glycation end products;5-hydroxymethylfurfural;butter cookies;natural antioxidants;hydrocolloids
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高影响因子
RENEWABLE ENERGY
·
2022
·
IF 8.634
Shanshan Tu,Xiaojie Yu,Qinghua Ji,Qiannan Ma,Cunshan Zhou,Li Chen,Clinton Emeka Okonkwo
With the deepening of the research on the conversion of cellulose biomass to furfural, there is no green and efficient method to separate sugars and 5-HMF. This study utilized a thermoreversible aqueous two-phase system (ATPS) coupled with tetrabutylammonium bromide ([N 4444 ]Br)- based deep eutectic solvents (DES) and inorganic salts for separating glucose and 5-HMF. The thermal characteristics of DESs were analyzed by thermogravimetry (TGA) and differential scanning calorimetry (DSC). The thermoreversible phase behavior of ATPS was determined by phase diagram. Furthermore, the process factors were optimized, such as the type and concentration of DES and phosphate, the temperature, and the time of ATPS were investigated, to maximize the separation of glucose and 5-HMF. Finally, the ATPS was a successful integrated catalytic reaction of glucose involving CrCl 3 and 5-HMF separation. The results showed that the ATPS consist of 30 wt% [N 4444 ]Br-EG and 25 wt% K 2 HPO 4 had the most efficient extraction rate, 5-HMF reached 96.0 ± 0.6%, and mainly existed in the DES phase, while glucose was enriched in salt phase, and the extraction rate reached 99.9 ± 0.03%. And the 5-HMF yield reached 25.6 ± 1.1% in the production separation integrated platform. This thermoreversible ATPS may provide a guide for the effective extraction of furfural from biomass-derived glucose.
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CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Zhong-Qiu Liu,Jia-Liang Guo,Rong-Hua Liang,Feng-Xiang Wang,Zhan-Ku Li,Yujing Liu,Anguo Ying
The efficient conversion of glucose to 5-hydroxymethylfurfural (HMF) is a critical process for maximizing the value of lignocellulosic biomass. However, the existing systems of binary solvent and ionic liquids (ILs) commonly employed for this conversion often encounter significant interphase mass transfer resistance and exhibit lower utilization efficiency of ILs. Herein, the study presents the precise fabrication of a novel Pickering interfacial catalyst, P(0.8[CL 8 ]-[ILs] 2 -[SP])@SiO 2 @Fe 3 O 4 with immobilized magneto-optical bi-sensitizer and Brønsted&di-superimposed-Lewis acid functionalized ILs (B-L-ILs), realized through surface-initiated reversible addition-fragmentation chain transfer polymerization. The construction of an intelligent Pickering emulsion with dual-stimuli-responsive properties was effectively accomplished by accurate manipulation under Vis-light radiation, utilizing P(0.8[CL 8 ]-[ILs] 2 -[SP])@SiO 2 @Fe 3 O 4 . The presence of this emulsion significantly enhances interphase mass transfer in a binary solvent system, while the incorporation of B-L-ILs at interphase interfaces in Pickering emulsion greatly facilitates the efficient conversion of glucose to HMF. The Pickering interfacial catalyst demonstrates exceptional and unprecedented performance, as evidenced by its ability to achieve a glucose conversion rate of 96.3% and HMF yield of 86.7%. Various characterizations, experimental analyses, and kinetic studies synergistically confirm the efficient conversion of glucose to HMF in the Pickering emulsion. The effective control of Pickering demulsification can be intelligently achieved by simultaneously applying magnetic stimulation and UV-light irradiation, while its catalytic activity remains unaltered even after undergoing five consecutive cycles. This study presents a novel approach to enhance the efficiency of HMF production by combining a cutting-edge Pickering emulsion with B-L-ILs, thereby accomplishing two objectives simultaneously.
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Biotechnology for Biofuels and Bioproducts
·
2023
·Vol. 16
·期 1
·1-13
·
IF 0
Yang Fan,Liu Jiashu,Li Bianxia,Li Huanan,Jiang Zhengbing
Background As a cost-effective and eco-friendly approach, biocatalysis has great potential for the transformation of 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylic acid (FDCA). However, the compatibility of each enzyme in the cascade reaction limits the transformation efficiency of HMF to FDCA. Results Coupled with an alcohol oxidase from Colletotrichum gloeosporioides ( Cgl AlcOx), this study aims to study the potential of bacterial laccase from Bacillus pumilus ( Bp Lac) in an enzymatic cascade for 2,5-furandicarboxylic acid (FDCA) biosynthesis from 5-hydroxymethylfurfural (HMF). Bp Lac showed 100% selectivity for HMF oxidation and generated 5-hydroxymethyl-2-furancarboxylic acid (HMFCA). Cgl AlcOx was capable of oxidizing HMFCA to 2-formyl-5-furancarboxylic acid (FFCA). Both Bp Lac and Cgl AlcOx could oxidize FFCA to FDCA. At the 5 mM scale, a complete transformation of HMF with a 97.5% yield of FDCA was achieved by coupling Bp Lac with Cgl AlcOx in the cascade reaction. The FDCA productivity in the reaction was 5.3 mg/L/h. Notably, Bp Lac could alleviate the inhibitory effect of FFCA on Cgl AlcOx activity and boost the transformation efficiency of HMF to FDCA. Moreover, the reaction was scaled up to 40 times the volume, and FDCA titer reached 2.6 mM with a yield of 58.77% at 168 h. Conclusions This work provides a candidate and novel insight for better design of an enzymatic cascade in FDCA production.
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JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2023
·
IF 3.4
Guoliang Zhang,Haoyu Liu,Sen Fu,Hong Yuan
BACKGROUND A series of ZSM-5@KIT-6 composite molecular sieve catalysts was prepared by encapsulating ZSM-5 as a substrate in the mesoporous material KIT-6. The intent was to use these catalysts to promote the catalytic cracking of a waste cooking oil model compound (WCOMC) to produce light olefins. RESULTS The morphology, structural characteristics and acidity of each of the resulting catalysts were characterized by X-ray diffraction, transmission electron microscopy, N 2 -Brunauer–Emmett–Teller (N 2 -BET) surface area analysis and temperature-programmed ammonia desorption. The results showed that ZSM-5 was successfully coated with KIT-6. The BET surface areas of these catalysts ranged from 345 to 792 m 2 g −1 and the specimens had average pore sizes in the range of 2.37–5.51 nm. Total acidity increased with increases in the mass-based proportion of ZSM-5 in the material. CONCLUSION The catalytic cracking of WCOMC was studied in a lab-scale fixed-bed apparatus. Trials at a reaction temperature of 600 °C using the material having a mass-based ZSM-5 proportion of 80.0% (ZK-80) gave the highest gas-phase yield of light olefins of 43.8%. After 6000 min, the catalytic performance of this material remained stable, demonstrating a resistance to carbon deposits. The superior activity of the present composite catalysts can be ascribed to improvements in pore structure and acid strength distribution. © 2023 Society of Chemical Industry (SCI).
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JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Hongjun Zang,Jing Lou,Shuolei Jiao,Huanxin Li,Yannan Du,Jiao Wang
Chitin and its derivatives contain biologically fixed nitrogen elements, which can provide nitrogen sources for N-containing chemicals. Herein, a series of pyridinium-based ionic liquids were synthesized to directly catalyze the conversion of N -acetyl-D-glucosamine (NAG, the monomer of chitin) to 3-acetamido-5-acetylfuran (3A5AF). The yield of 3A5AF in 1-carboxymethyl pyridinium chloride ionic liquid reached 37.49%, without any additives. Using B 2 O 3 and CaCl 2 as additives, the optimum yield increased to 67.37% at 180 °C in 20 min. In addition, HPLC-MS analysis has been utilized to elucidate the reaction mechanism. This research on turning “waste” into “wealth” opens up new ways for the utilization of biomass waste, which not only reduces environmental pollution but also has potential economic value.
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Catalysts
·
2021
·Vol. 11
·期 3
·324
·
IF 4.146
Jinkun Guan,Lusha Zhou,Weiquan Li,Die Hu,Jie Wen,Bichun Huang
SO2poisoning is a great challenge for the practical application of Mn-based catalysts in low-temperature selective catalytic reduction (SCR) reactions of NOxwith NH3. A series of Gadolinium (Gd)-modified MnOx/ZSM-5 catalysts were synthesized via a citric acid–ethanol dispersion method and evaluated by low-temperature NH3-SCR. Among them, the GdMn/Z-0.3 catalyst with the molar ratio of Gd/Mn of 0.3 presented the highest catalytic activity, in which a 100% NO conversion could be obtained in the temperature range of 120–240 °C. Furthermore, GdMn/Z-0.3 exhibited good SO2resistance compared with Mn/Z in the presence of 100 ppm SO2. The results of Brunauer–Emmett–Teller (BET), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction of H2(H2-TPR) and temperature-programmed desorption of NH3(NH3-TPD) illustrated that such catalytic performance was mainly caused by large surface area, abundant Mn4+and surface chemisorbed oxygen species, strong reducibility and the suitable acidity of the catalyst. The in situ diffuse reflectance infrared Fourier transform spectra (DRIFTS) results revealed that the addition of Gd greatly inhibited the reaction between the SO2and MnOxactive sites to form bulk manganese sulfate, thus contributing to high SO2resistance. Moreover, in situ DRIFTS experiments also shed light on the mechanism of low-temperature SCR reactions over Mn/Z and GdMn/Z-0.3, which both followed the Langmuir–Hinshelwood (L–H) and Eley–Rideal (E–R) mechanism.Keywords:SO2poisoning;low temperature;NH3-SCR;in situ DRIFTS
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高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2021
·
IF 4.952
Jia-Nan Chen,Xu-Hui Huang,Jie Zheng,Yi-Han Sun,Xiu-Ping Dong,Da-Yong Zhou,Bei-Wei Zhu,Lei Qin
Blue mussel ( Mytilus edulis L.) is a shellfish with high nutritional and economic value. Free amino acids (FAAs), 5′-nucleotides, and lipids that affected the nutritional value and flavor of blue mussels varying with the seasons were analyzed using stable isotope labeling-liquid chromatography coupled with tandem mass spectrometry (SIL-LC-MS/MS) and ultra-performance liquid chromatography-Q-Exactive orbitrap tandem mass spectrometry (UPLC-Q-Exactive Orbitrap-MS). FAAs and 5′-nucleotides were most in the summer. Changes in FAAs between seasons were more obvious than those between genders, except in spring, when females were in the reproductive period. A total of 413 lipids were annotated in blue mussels for one year. Seasonal variation in triacylglycerols (TAGs) was the most evident. TAGs were dominant in females, while phosphatidylcholines (PCs) and phosphatidylethanolamines (PEs) were dominant in males. Overall, blue mussels in summer were more delicious and nutritious. Thus, such findings are of great significance to the seasonal preference of deep processing and consumption of mussel products.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Xiaojie Song,Xiaohui Liu,Haifeng Wang,Yong Guo,Yanqin Wang
The electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylic acid (FDCA), an important platform chemical for renewable polymer industry, is receiving increasing interest. In this study, nickel borides (NiBx) doped with different amounts of phosphorus were prepared by a simple method and applied to the electrocatalytic oxidation of HMF. It was found that the FDCA yield on P-doped NiBx (NiBx–Py) gradually improved first and then decreased with the increase of phosphorus content. When NiBx–P0.07 (nP/nNi = 0.07) is used as the electrocatalyst, the FDCA yield reached the maximum (90.6%) and Faradaic efficiency was 92.5% at the potential of 1.464 V (vs RHE). XPS results indicate that the P dopant made relative displacement of electrons from surface nickel happen and surface nickel hydroxide species increased, which has a beneficial effect on its electrocatalytic performance. Furthermore, appropriate phosphorus doping accelerated charge transmission capability of NiBx–Py and then improved its activity. NiBx–P0.07 also has good stability in the potentiostatic electrolysis of HMF.
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Waste and Biomass Valorization
·
2020
·Vol. 12
·期 6
·3271-3286
·
IF 2.851
Sajid Muhammad,Bai Yuchen,Liu Dehua,Zhao Xuebing
Abstract Hydroxymethylfurfural (HMF) has been considered as one of the most promising biomass derived precursors for producing bio-based materials. Lewis acids are usually used to facilitate the isomerization of glucose to fructose in order to improve the HMF yield. In this study, glucose was converted to HMF with p -toluenesulfonic acid ( p TSA) and chlorides as Brønsted and Lewis acids catalysts in the DMSO medium at 120 °C under atmospheric pressure. Kinetic modeling of the process was investigated with consideration of glucose isomerization, dehydration of fructose, rehydration of HMF and formation of humin. NH 4 Cl was screened as the most efficient co-catalyst for glucose conversion with HMF yield of 47%. The developed model could be well used to simulate the process with satisfying goodness of fit. The activation energies for glucose isomerization, condensation, dehydration of fructose, and rehydration of HMF were determined to be 39.8, 18.1, 55.2, and 19.0 kJ/mol, respectively. However, because the fructose concentration was very low and the reaction rate of fructose dehydration was much higher than that of glucose isomerization, a pseudo-steady state assumption could be employed, by which the observed activation energy for a lumped reaction of glucose to HMF conversion ( E HMF ) was determined as 45.6 kJ/mol. The developed observed kinetic model could be well used to describe the kinetics of p TSA and chloride co-catalyzed conversion of HMF. Isomerization of glucose to fructose, condensation of glucose to form humin, dehydration of fructose to form HMF, and rehydration of HMF to LA were the major reactions in the system. To improve the HMF selectivity, efforts should be made to reduce the rate of glucose condensation to form humin Graphic Abstract
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高影响因子
Energy Technology
·
2020
·Vol. 9
·期 2
·2000808
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IF 3.404
Wen Wen,Zhinan Wang,Ailian Wang,Qinghui Zeng,Pingping Chen,Xin Wen,Zhenfeng Li,Zengxi Li,Wei Liu,Liaoyun Zhang
Solid polymer electrolytes (SPEs) have been one of the most promising candidates to replace nonaqueous liquid electrolyte for achieving high-safety lithium-ion batteries (LIBs). However, the extremely low ionic transport capacities of SPEs have seriously hindered their applications in LIBs. Herein, a metal–organic framework (MOF) material MOF-5 is applied to polymer electrolyte for enhancing electrochemical performances of SPEs. Specifically, a polymer matrix is first obtained via a strategy of random copolymerization of trifluoroethyl methacrylate (TFEMA) and poly(ethylene glycol) methacrylate (PEGMA). Then, a free-standing flexible composite SPE (CSPE) membrane composed of P(TFEMA- ran -PEGMA) polymer, lithium salt, and MOF-5 (nanofillers) is prepared by the solution casting technique. The results indicate that the room temperature ionic conductivity of the CSPE is 1.5 times higher than that of neat SPEs and lithium-ion transference number of CSPE remarkably enhances from 0.25 to 0.51. In addition, the as-prepared CSPE has a very wide electrochemical window of 5.38 V. Moreover, the assembled solid cell LiFePO 4 /CSPE/Li presents an outstanding specific discharge capacity retention of 92.2% after 25 cycles. Thus, the superior comprehensive properties of the MOF-incorporated composite polymer electrolyte exhibit a promising potential application in solid electrolyte for high-safety solid LIBs.
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高影响因子
Catalysis Science & Technology
·
2020
·Vol. 11
·期 4
·1497-1509
·
IF 5.721
Xiaoyue Wan,Nannan Tang,Qi Xie,Shuangyan Zhao,Chunmei Zhou,Yihu Dai,Yanhui Yang
A CuMn2O4 spinel oxide was prepared via a freezing-assisted sol–gel method and used in the aerobic oxidation of 5-hydroxylmethylfurfural (HMF) toward 2,5-furandicarboxylic acid (FDCA) in aqueous solvent. A highest FDCA yield of 92.1% over the CuMn2O4 spinel oxide was achieved and the catalyst could be regenerated by calcination in air after the sixth consecutive run, outperforming several other Mn-based spinel and single oxide catalysts. Kinetic studies reveal that HMF → 2,5-diformylfuran → 5-formylfuran-2-carboxylic acid (FFCA) → FDCA is the primary reaction route of the reaction and that the oxidation of FFCA is the rate-determining step over the CuMn2O4 spinel. Characterization measurements show that Mn species enrichment and proper Mn4+/Mn3+, Cu2+/Cu+ and Cu/Mn ratios on the surface of the catalyst led to an appropriate Olatt./Oads. ratio, which facilitated oxygen mobility between the Olatt. consumption and the Olatt. generation via the refilling of oxygen vacancies. Synergistic effects between Mn and Cu in the CuMn2O4 spinel inhibit the secondary reaction and accelerate the rate-determining step rate to enhance FDCA formation.
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