FOOD CHEMISTRY
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2026
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IF 10.4
Fanhua Wu,Xinyu Wang,Jinkui Wu,Dianli Yang,Chu Li,Ying Zhang,Ni Cheng,Haoan Zhao,Wei Cao
The changes in metabolic profiles of honey during long-term room temperature storage were studied. • Untargeted and targeted metabolomics approaches reveal changes in components of stored honey. • Phenolic acids decrease and furfurals increase during long-term room temperature storage. The performance stability during honey processing and storage is critical to evaluating honey quality and safety. Previous research mainly focused on the impact of heat processing on honey quality, while the molecular changes in chemical composition and the underlying mechanisms of honey during long-term room-temperature storage are unclear. Herein, the honey samples stored at 25 °C–30 °C for 0–24 months were prepared, and the differential metabolite profile of the prepared honey was analyzed using an HPLC-QTOF-MS-based untargeted metabolomics. Changes in characteristic compounds are presented as the degradation of six phenolic acids (gallic acid, p -hydroxybenzoic acid, vanillic acid, syringic acid, p -coumaric acid, and ferulic acid) and the generation of four furfurals (5-hydroxymethylfurfural, 2-furaldehyde, 2-furyl-methyl ketone, and 5-methylfurfural). The variations in characteristic compounds of eight randomly selected batches of honey samples with different storage durations are consistent with the above. This study comprehensively investigated the changes in chemical composition during 24-month storage of acacia honey, demonstrating the significant impact of room-temperature storage on honey quality and providing a reference for honey quality control. Download: Download high-res image (246KB) Download: Download full-size image
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Shangpu Zhuang,Di Hao,Yilin lei,Jiahui Chu,Fan Xue,Tao Wei,Yuyu Sun,Zhuxiu Zhang,Ruiping Wei,Jihai Tang,Xu Qiao
MOF-templated strategy fabricates highly dispersed Cu x Ni 2-x /CeO 2 catalysts. • Cu 1.2 Ni 0.8 /CeO 2 achieves 100% BHMF yield under mild reaction conditions. • Cu-O V interfacial sites induce vertical adsorption for C=O selective activation. • Ni-promoted H spillover boosts hydrogenation efficiency. Efficient utilization of biomass is a cornerstone of green chemistry and sustainable development. 5-Hydroxymethylfurfural (5-HMF) constitutes a pivotal biomass-derived platform molecule which selective hydrogenation into 2,5-bis(hydroxymethyl)furan (BHMF) plays a crucial role in the development of bio-based materials and fine chemicals. Conventional monometallic catalysts, however, are often constrained by an intrinsic trade-off between activity and selectivity and tendencies toward particle sintering and deactivation. To address these challenges, a metal–organic-framework (MOF) precursor was employed in a self-sacrificial templating route to fabricate highly dispersed, oxygen vacancies-tunable, bimetallic Cu x Ni 2–x /CeO 2 catalysts. By integrating comprehensive physicochemical characterization with in-situ spectroscopies, a systematic investigation was conducted to examine the effects of the Cu/Ni ratio and oxygen vacancy (O V ) concentration on 5-HMF hydrogenation were systematically investigated to elucidate structure–activity relationships. The results demonstrate that the Cu 1.2 Ni 0.8 /CeO 2 catalyst achieves an optimal balance between O V and metal site distribution, enabling nearly complete 5-HMF conversion and exclusive selectivity toward BHMF. Interfacial synergy facilitates Ni-mediated H 2 dissociation and hydrogen spillover to Cu sites, while the O V selectively adsorbs and activates the carbonyl of HMF, suppressing furan-ring hydrogenation and other side reactions. Compared with prior reports, this work highlights the decisive roles of O V and bimetallic interfaces in promoting substrate-selective adsorption, active-hydrogen supply, and side-reaction suppression. This strategy advances the high-value conversion of biomass platform molecules and provides a conceptual foundation for the rational design of green catalysts. Download: Download high-res image (116KB) Download: Download full-size image
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Green Energy & Environment
·
2026
·
IF 16.7
Zhiyang Tang,Xianyuan Wu,Jie Qu,Xinjun He,Fukun Li,Jinxing Long,Qiang Zeng,Haixia Su,Hongyan He,Xuehui Li
Selective hydrogenolysis of cellulose into C 6 -ketones offers a promising route for the production of high-value carbonyl compounds. However, conventional metal-catalyzed hydrogenolysis methods typically rely on externally added acids and require high-purity H 2 . Herein, we report an alternative syngas-promoted hydrogenolysis method that eliminates these dual dependencies while enabling the selective transformation of cellulose into value-added C 6 -ketones. Under optimal conditions, using a commercial Pd/C catalyst at 230 °C and 3.0 MPa total pressure (H 2 /CO = 1.5/1.5 MPa) for 2 h, the yield of C 6 -ketones reached 37.8 C-mol%, representing a 6.8-fold enhancement compared to that obtained under pure H 2 . Mechanistic studies demonstrated a dual promotional effect of CO in directing cellulose to C 6 -ketones. First, competitive adsorption of CO on Pd active sites suppresses excessive hydrogenation and undesired hydrogenolysis of cellulose-derived intermediates. Second, CO participates in the water–gas shift (WGS) reaction (CO + H 2 O ⇌ CO 2 + H 2 ), generating carbonic acid (H 2 CO 3 ) in-situ via CO 2 + H 2 O ⇌ H 2 CO 3 , which provides a controllable acidic environment that promotes key intermediate transformations associated with C 6 -ketone precursor formation.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xia Jiang,Ziheng Ding,Wenhua Zhang,Zhicheng Jiang,Bi Shi
Electrocatalytic production of 2,5-furandicarboxylic acid (FDCA) from 5-hydroxymethylfurfural (HMF) is a sustainable and clean pathway for harvesting both value-added chemicals and green hydrogen (H 2 ). Herein, B, N doped porous carbon supporting Co (Co/BN-C) with abundant pyridinic N-B species was constructed via a one-pot method using chitosan as precursors, which was further applied for the paired electrocatalysis of an HMF oxidation reaction (HMFOR) and H 2 evolution reaction (HER). H 3 BO 4 as a templating agent could increase the specific surface area of the catalyst and expose more active sites for the HMFOR. Meanwhile, H 3 BO 4 also acted as a B source to dope heteroatoms in the carbon matrix, creating surface defects and thus improving electrical conductivity. Besides, B, N-doped carbon substrate induced the electron deficiency of Co nanoparticle, resulting in the strong adsorption of HMF on the catalyst surface via the interactions between the aldehyde group/furan ring of HMF and the catalyst. Consequently, the Co/BN-C catalyst exhibited remarkable performance with a high HMF conversion (> 99%) and selectivity to FDCA (> 98%) and remained high activity after 8 cycles.
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ACS Omega
·
2023
·
IF 4.1
Ning Shi,Tianlang Zhu,Hongyan Zhang,Hongsheng Huang,Liang Zhou,Ying Liu,Riyang Shu
Catalytic conversion of cellulose into the novel platform molecule 2,5-hexanedione (HXD) is regarded as one feasible approach for high-value utilization of biomass resources. Here, we reported one efficient way of one-pot conversion of cellulose into HXD with high yield of 80.3% in H2O and tetrahydrofuran (THF) mixture within Al2(SO4)3 combined with Pd/C as a catalyst. In the catalytic reaction system, Al2(SO4)3 could catalyze the conversion of cellulose into 5-hydroxymethylfurfural (HMF), and Pd/C combined with Al2(SO4)3 could catalyze the hydrogenolysis of HMF into furanic intermediates such as 5-methylfurfuryl alcohol and 2,5-dimethylfuran (DMF) without causing over-hydrogenation of these furanic intermediates. These furanic intermediates were finally transformed into HXD catalyzed by Al2(SO4)3. Besides, the H2O/THF ratio could significantly influence the reactivity of the hydrolytic furanic ring-opening of the furanic intermediates. The catalytic system also showed excellent performance on the conversion of other carbohydrates (glucose and sucrose) into HXD.
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Journal of the Taiwan Institute of Chemical Engineers
·
2023
·
IF 5.7
Taimei Cai,Lihua Yao,Jieping Fan,Hailong Peng
Background The highly efficient conversion of renewable biomass-derived platform compounds to high value-added chemicals is one of the most promising solution to the current rapid consumption of fossil resources. Methods Nanofibrous and porous carbon microspheres (NPCMs) were developed from chitin biomass and used to encapsulate Fe-Ni bimetallic nanoparticles for the formation of a novel catalytic nanoreactor (Fe-Ni/NPCMs), which was then used for the selective hydrogenation of 5-hydroxymethylfurfural (HMF) to 2,5-dihydroxymethylfuran (DHMF) or 2,5-dihydroxymethyltetrahydrofuran (DHMTHF). Significant findings The NPCMs consisted of N-doped carbon nanofibers with a high surface area. The Fe-Ni bimetallic nanoparticles were uniformly dispersed on the carbon nanofiber surfaces of the Fe-Ni/NPCMs, resulting in abundant catalytic sites and excellent catalytic performance. Importantly, the Fe-Ni/NPCMs showed highly-selective hydrogenation of HMF to DHMF or DHMTHF with high yields of 93.6% or 94.9% through simply modulating the reaction conditions. Increasing the zero valent iron (Fe 0 ) content in the Fe-Ni/NPCMs significantly promoted the DHMTH selectivity from HMF hydrogenation. Moreover, the Fe-Ni/NPCMs presented high stability and recyclability, and thus they are applicable to other biomass conversions . Therefore, Fe-Ni/NPCMs have promising industrial application in the production of high value-added chemicals from biomass-derived feed-stocks.
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Foods
·
2023
·Vol. 12
·期 11
·2151
·
IF 5.2
Baorong Chen,Xiaodan Wang,Yumeng Zhang,Wenyuan Zhang,Xiaoyang Pang,Shuwen Zhang,Jing Lu,Jiaping Lv
This study aimed to determine chemical composition and assess exposure in flavored milk among Chinese residents, based on risk assessment methodologies of acceptable daily intake (ADI) and toxicological concern threshold (TTC). Esters (32.17%), alcohols (11.19%), olefins (9.09%), aldehydes (8.39%), and ketones (7.34%) comprised the majority of the flavoring samples. Methyl palmitate (90.91%), ethyl butyrate (81.82%), and dipentene (81.82%) had the highest detection rates in flavor samples. This study screened fifteen flavor components of concern and discovered that 2,3,5-trimethylpyrazine, furfural, benzaldehyde, and benzenemethanol were detected in 100% of flavored milk samples. Benzenemethanol was found in the highest concentration (14,995.44 μg kg−1). The risk assessment results revealed that there was no risk for Chinese residents in consuming flavored milk, and the maximum per capita daily consumption of 2,3,5-trimethylpyrazine, furfural, and benzenemethanol were 226.208 g, 140.610 g, and 120.036 g, respectively. This study could provide guidelines for amounts of flavor additive ingredients in milk.Keywords:flavored milk;SPME-GC/MS;flavor components;acceptable daily intake;toxicological concern threshold
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Molecular Catalysis
·
2023
·
IF 4.6
Siyuan Chang,Sen Zhang,Tianyi Chen,Lei Xu,Sumin Ge,Bingfeng Li,Chenke Yun,Guoxin Zhang,Xuejun He,Xin Pan
The important bio-based platform chemical 5-Hydroxymethylfurfural (HMF) can be oxidized for use in several products that serve as versatile building blocks of polymers. Previously, we had demonstrated that Pseudomonas aeruginosa PC-1 can selectively produce 5-hydroxymethyl-2-furancarboxylic acid (HMFCA) from 800 mM HMF, with a yield greater than 90%. In this study, an aldehyde dehydrogenase (PaALDH64) was identified from P. aeruginosa PC-1 for selective HMF oxidation to HMFCA. The HMF tolerance level of E. coli /pET- PaALDH64 was over 300 mM, which was greater than the tolerance levels of all other reported enzymes. The proposed biocatalyst could be used to catalyze the biotransformation of other aldehydic furans, with carboxylic acid yields over 92%. Molecular docking revealed that the catalytic active site cleft in PaALDH64 formed more hydrogen bonds with HMF compared to other enzymes, which stabilized the enzyme–substrate interaction and enhanced the catalytic efficiency. In a fed-batch process, 547.8 mM HMFCA was produced from 600 mM HMF by E. coli /pET- PaALDH64 within 19 h only, which showed an excellent HMF conversion rate. Overall, PaALDH64 constitutes a promising enzyme for the industrial production of HMFCA.
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DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 32
·11076-11084
·
IF 4
Zhuoyou Gao,Mengying Wang,Ningzhao Shang,Wei Gao,Xiang Cheng,Shutao Gao,Yongjun Gao,Chun Wang
Hydrodeoxygenation (HDO) is an indispensable approach to produce renewable biofuels and value-added chemicals using natural biomass and its derivatives. 2,5-Dimethylfuran (DMF) is considered to be a very promising liquid biofuel, and it can be fabricated by HDO of the biomass derivative 5-hydroxymethylfurfural (HMF). Herein, a highly efficient bifunctional catalyst, Co/HAP(Ce), was fabricated by anchoring highly dispersed Co on Ce-doped hydroxyapatite (HAP(Ce)). Co/HAP(Ce) displayed excellent HDO catalytic activity to convert HMF to DMF, and 99% HMF conversion and 96% DMF selectivity can be obtained under 150 °C, 2 MPa H2 conditions for 5 h. Density functional theory calculations revealed that H2 can be more easily activated by Co/HAP(Ce). Systematic studies confirmed that the high activity of Co/HAP(Ce) can be ascribed to the desired acid–alkali properties, highly dispersed cobalt species and strong metal–support interactions. This research provides a cost effective approach for designing efficient catalysts for HDO of biomass and its derivatives.
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ACS Catalysis
·
2023
·
IF 12.9
Peiqi Liu,Wanyun Shao,Zhen Yang,Jiuzhong Yang,Liangyuan Jia,Yang Pan,Zhongyue Zhou,Yingquan Chen,Fei Qi
Reactive intermediates are essential for determining the reaction mechanism of biomass pyrolysis. However, these short-life compounds are rarely reported because they are difficult to probe and identify. Here, the catalytic pyrolysis of furanic compounds over HZSM-5 was investigated by combining a low-pressure reactor and an in situ synchrotron vacuum ultraviolet photoionization molecular beam mass spectrometer (SVUV-PI-MBMS). Important reactive intermediates (m/z < 200) can be detected and characterized by this in situ analysis method, which also allows studying the dynamics of volatile formation as a function of catalyst deactivation. Strikingly, formaldehyde and acetaldehyde as reactive intermediates in the upgrading of 5-methylfurfural (5-MFF) are mainly produced from its side-chain cracking on the external surface of the zeolite, while their conversion is highly related to the contribution of the Brønsted acid site inside the zeolite. It is also evidenced that reactive methylcyclopenadienes (MCPDs) are formed from various compounds (alkynes, furans and olefins) and can be further converted to methylbenzenes (MBs) via ring-expansion. Finally, more complete conversion pathways that contain reactive intermediates for zeolite-catalyzed pyrolysis of furanic compounds are proposed. The key roles of some reactive intermediates in promoting the deoxidation and aromatization of furans are also illustrated.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Ye Meng,Yumei Jian,Jie Li,Hongguo Wu,Heng Zhang,Shunmugavel Saravanamurugan,Song Yang,Hu Li
The appropriate regulation of photocatalyst band structure by simultaneous introduction of active sites is an effective strategy in constructing efficient photocatalytic systems for biomass valorization. Herein, a renewed host–guest photocatalyst (Ov-WO 3 @CB[5]) prepared by anchoring cucurbit[5]uril on oxygen vacancy-rich WO 3 was efficient for reductive upgrading of biomass derivatives using NH 3 -BH 3 , such as cascade photocatalytic hydrogenation-cyclization of ethyl levulinate to γ-valerolactone (up to 99 % yield) at 25 °C in 1 h, and quantitative production of primary/secondary bio-alcohols or arylamines from various aldehydes/ketones or nitroarenes, respectively. Also, the rate of H 2 production by direct photocatalytic hydrolysis of NH 3 -BH 3 could reach 5.75 mL h −1 g −1 . The inclusion of cucurbit[5]uril effectively adjusted the semiconductor band structure and enhanced migration efficiency of photo-generated carriers, and the hydrophobic cavity of cucurbit[5]uril favored the entrance of NH 3 -BH 3 , as elaborated by theoretical calculations. Properly engineering supramolecular surface-active sites based on interface host–guest chemistry opens new avenues for reductive upgrading of biomass and hydrogen evolution.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Shuibo Wang,Chunzheng Wu,Hongbo Yu,Yuting Chu,Shiwei Wang,Tong Li,Hongfeng Yin
Tailoring the interface between active metals and promoters to improve catalytic performance is a challenging issue for bicomponent catalysts. Herein, we developed a series of silica supported Pt-CoO x hybrid nanocatalysts though in situ oxidation of supported bimetallic PtCo nanoparticles (NPs) with different Pt/Co ratios. Focusing on the hydrogenation of acetophenone to 1-phenylethanol as the model reaction, the obtained Pt-CoO x /SiO 2 catalysts showed superior activity and selectivity compared to Pt/SiO 2 , and the sample with a Co/Pt molar ratio of 1/3 performed the best. Our research showed that the CoO x on Pt not only changed its electronic and geometric properties, but also promoted the adsorption of reactants and the dissociation of H 2 . A further increase of the Co/Pt ratio to 1/1, however, reduced the activity due to blockage of the Pt surface.
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