LWT-FOOD SCIENCE AND TECHNOLOGY
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2026
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IF 7.1
Jingran Liu,Hao Yang,Shuning Yi,Yingyuan Zhao,Xianhui Chang,Qingyun Lyu,Lei Chen,Qian Shen,Wenping Ding,Xi Chen
This study preliminarily confirmed that the primary cause for the low bioavailability of Dihydromyricetin (DHM) was its rapid structural alteration induced by pH fluctuation during digestion, using the in vitro digestion model with HPLC-ESI-MS/MS analysis. Thus, for stable gastrointestinal delivery, DHM was encapsulated using bovine serum albumin (BSA) - chitosan nanocarrier. Physicochemical characterization revealed spherical DHM loaded BSA-chitosan nanoparticles (DBC-NPs, 217.3 ± 3.2 nm) with high encapsulation efficiency (86.66%). In vitro stability tests confirmed their resistance to upper gastrointestinal pH variations and indicated the potential to reach the colon intact. Untargeted metabolomics and 16S rRNA sequencing were performed using in vitro colonic fermentation (three replicates in each group) of gut bacteria from the pooled stools of 6 donors, applying a statistical threshold of p-value <0.05. Furthermore, DBC-NPs modulated gut microbiota (increasing Dorea / Bifidobacterium / Akkermansia , reducing Escherichia-Shigella / Clostridium ) and their corresponding metabolites (such as promoting beneficial phenyllactic acid while inhibiting harmful metabolites such as 3-Oxocholic acid). This study revealed the capability of BSA-chitosan in protecting DHM integrity during digestion and regulative effect on the gut microbiome and their metabolites, offering new strategies for functional foods and precision nutrition interventions.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2026
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IF 9.2
Guida Jiang,Yingge Shu,Ling Zhao,Ying Teng,Tao Chen,Runlai Luo,Zhongyuan Li
A slow-release permanganate (PM) and persulfate (PS) composite gel (P-PGSR) was developed to overcome the blocking effect of amorphous MnO 2 generated from PM and the futility of PS without activator in-situ chemical oxidation (ISCO) of sulfonamides (SAs) in groundwater plumes. Results showed that the release longevity of PM and PS from P-PGSR was lengthened 3-fold more than from powder in a column experiment. Low P-PGSR dosage, permeability of the porous medium and ionic strength facilitated the release efficiencies of PM and PS, which was not fully consistent with the degradation efficiencies of SAs. Approximately 99.1% sulfathiazole (STZ) at pH 6, and 83.9% sulfadiazine (SDZ), 92.4% sulfachloropyridazine (SCP) and 92.4% sulfamethoxazole (SMX) at pH 5, were degraded within 24 min by 1.25 g P-PGSR at 2.0 mL min −1 flow rate using 0.01 M NaCl as background solution. Co-existing 0.5 M anions inhibited the degradation of SAs. The addition of 5 mg L −1 fulvic acid enhanced the degradation of SDZ and SCP, but reduced the degradation of STZ and SMX. Increasing ration of PS and PM from 0 to 5 accelerated the k obs of SDZ, STZ, SCP and SMX by 5.5, 1.3, 18.1 and 5.6 folds, respectively, proving that P-PGSR is a novel self-catalytic oxidant to improve the remediation efficiency of ISCO. Radical quenching experiments illustrated that ∙OH was the primarily reactive species for the degradation of STZ and SMX, while SO 4 ∙ − played an important role in the degradation of SDZ, STZ and SCP. The intermediate products of SDZ, STZ and SMX indicated that aniline moiety oxidation, hydroxylation, deamination, and smiles-type rearrangement to produce SO 2 extrusion were involved in the degradation pathways of SAs by treatment with P-PGSR.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Xiangting Zhao,Yuyan Zheng,Meiling Chen,Xiaoqin Jiang,Wenhua Miao,Yadong Zhao,Jin Zhu,Fei Liu
In this study, cellulose was facilely dissolved in a novel solvent composed of carbon disulfide, an organic base, and organic solvent, and then regenerated to obtain dithiocarbonate cellulose. Functional fluorescent material was then fabricated by grafting poly(lactic acid) side chain and dansyl chloride (DNS-Cl) to the backbone of this cellulose derivative. The product, denoted as cellulose- graft -poly(lactic acid)/dansyl chloride (C-g-PLLA/DNS-Cl), was obtained by simply dissolving cellulose and grafting fluorescent structures. It exhibits a distinct glass transition temperature, indicating thermal processing properties. It displays yellow-green fluorescence in both solid and solution states. The fluorescence intensity increases with solution concentration; when the concentration reaches 1.0 mg/mL, the intensity begins to decrease until complete quenching, exhibiting a pronounced aggregation-caused quenching (ACQ) effect. Simultaneously, it exhibits high sensitivity fluorescent response towards Fe 3+ with a detection limit as low as 1.40 × 10 −5 M. This study provides a new perspective on the high-value utilization of cellulose based on a novel solvent.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·122009
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IF 7.5
Xingyu Guo,Haiyan Song
Photocatalytic H 2 O 2 production from O 2 using covalent organic frameworks (COFs) is a promising solar-to-chemical energy conversion route. However, existing design strategies for COF-based photocatalysts are constrained by various issues, making it difficult to achieve synergistic optimization of both photogenerated charge separation efficiency and catalytic activity. In addition, compared with pure water medium, achieving efficient H 2 O 2 production in alcohols is of great significance for alcohol-mediated organic synthesis and direct alcohol fuel cells. Herein, two amide-linked COFs were fabricated via site-specific benzene ring functionalization, focusing on precise amino group incorporation. Aligned with recent advances in photocatalytic structure property relationships, amino group introduction induces significant charge density differentials in COFs, modulating donor acceptor interactions and efficiently promoting photogenerated charge separation/transport. Consequently, the 2-aminoterephthalic acid-based COF (PPTD-COF) exhibits superior photocatalytic H 2 O 2 production performance. PPTD-COF achieves a H 2 O 2 productivity of 16.23 mmol h −1 g −1 in ethanol within 0.5 h, 16-fold higher than the unmodified terephthalic acid-based COF (PTA-COF). Ethanol acts as an efficient electron-proton donor, supplying abundant H + for the oxygen reduction reaction (ORR) and facilitating proton-coupled electron transfer (PCET) for efficient H 2 O 2 generation. This work develops a site-specific functionalization strategy to tune COF electronic structures, optimize donor-acceptor interactions, and enhanced charge dynamics, highlighting potential applications in sustainable energy and environmental remediation.
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GREEN CHEMISTRY
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2026
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IF 10.6
Yujie Ren,Bin Zhu,Qiuge Wang,Shuyi Wang,Sheng Chen,Jian Zhang,Chunlin Chen
Amid the global energy transition and the drive toward carbon neutrality, converting biomass into high-value chemicals has become a key research priority. In particular, the electrocatalytic oxidation of bio-based 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) has garnered significant interest. Nickel-based catalysts show great promise for the HMF oxidation reaction (HMFOR). However, their practical application is limited by the complicated and environmentally unfriendly preparation procedures, as well as the stringent requirements for high-purity reagents and water. This study proposes a green synthesis strategy that integrates catalyst fabrication and biomass electrooxidation using natural seawater. By employing seawater as a hydrothermal corrosion medium, nickel foam (NF) is reconstructed into a highly efficient catalyst. The obtained NF-sw-120 electrode delivers outstanding performance in an alkaline seawater electrolyte, achieving a FDCA yield of 97.5% and a faradaic efficiency (FE) of 97.6%. Moreover, it exhibits exceptional stability after continuous electrolysis for 1500 hours. Mechanistic investigations reveal that seawater simultaneously suppresses the competing oxygen evolution reaction (OER) while promoting the HMFOR, leading to higher current density and improved energy efficiency. This work provides a sustainable and cost-effective route for fabricating high-performance biomass electrocatalytic materials.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Aiguo Yuan,Haitao Yu,Shuke Liu,Laxiang Yang
Aflatoxin contamination in soybeans is challenging because toxins can partition into dense kernel matrices. This study developed a coupled ultrasound–chlorination (US/Cl) process to remove four aflatoxins from soybean kernels. Within 10 min, US/Cl achieved 80.4–91.3% removal, outperforming chlorination alone (45.3–57.2%) and ultrasound alone (38.4–40.2%). The synergy factor increased from 0.1 to 1.9% (2 min) to 15.0–19.8% (10 min), indicating a shift from early desorption to late-stage radical oxidation. Mass-balance tracking of AFB1 confirmed chemical destruction under US/Cl, with 83.4% degraded after 10 min and only 8.7% remaining in kernels and 7.9% in water. Box–Behnken response surface methodology identified practical operating windows and showed excellent fit ( R 2 = 0.9968). Identified intermediates supported initial hydroxylation and chlorination followed by further oxidation. Soybean quality was preserved, with overlapping FTIR spectra and minimal color change (ΔE = 1.86). Overall, US/Cl provides a rapid, quality-preserving decontamination strategy for soybean kernels.
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POLYMER
·
2026
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IF 5.1
Yongliang Ding,Lieshun Cai,Siyu Liu,Jindong Li,Qihao Huang,Yu Fang,Qingmin Yang,Xi Li,Zhongkai Wang,Xiankun Wu
The design of sustainable polymers that combine high strength, ductility, and compatibility with existing bioplastics remains a critical challenge. Here we report a castor-oil-derived sulfur-containing copolyamide (PAS-X) synthesized via thiol-ene click reaction followed by melt polycondensation, providing a scalable route for high-performance bio-based materials. The incorporation of flexible thioether linkages and strongly hydrogen-bonding amide motifs enables precise control over chain mobility, crystallinity, and mechanical response. The optimized copolymer, PAS-50, exhibits a tensile strength of ≈39.8 ± 2.4 MPa and a work-to-fracture of ≈120.7 ± 8.0 MJ m −3 . When blended with polylactic acid (PLA) at low loadings (≤5 wt%), PAS-50 forms robust hydrogen-bond-mediated interfaces that induce a brittle-to-ductile transition, increasing fracture toughness from 9.2 MJ m −3 to 60.7 MJ m −3 without sacrificing yield stress. This work establishes a chemically simple and industrially viable approach to transform renewable plant-oil derivatives into multifunctional polyamides, offering a general framework for hydrogen-bond-assisted design of strong and tough bio-based polymers.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2026
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IF 4.8
Zhima Yangcuo,Xiaodan Zheng,Yajuan Zhang,Xin Yang,Xinyi Zheng,Hang Zhu,Wenhui Chen,Qihong Cai
Under alkaline conditions with sodium hydroxide (NaOH), both 1-naphthol (1-NAP) and 2-naphthol (2-NAP) transitioned from their molecular forms to ionic forms, resulting in redshifts of their fluorescence spectra. Thus, not only the interference of 2-NAP raman peak was eliminated, but the fluorescence intensity of two naphthols was also enhanced, thereby improving the selectivity and sensitivity of their analysis. Due to their structural similarity, the conventional fluorescence spectra of 1-NAP and 2-NAP overlapped and interfered with each other, precluding their simultaneous measurement without prior separation. In this study, the wavelength difference (Δλ) = 140 nm was selected for synchronous fluorescence spectrometry (SFS) scanning to simplify the spectra. However, the interference of 2-NAP on 1-NAP remained significant. So, the second-order derivative technique combined with SFS was adopted. The method that eliminated the severe interference between 1-NAP and 2-NAP and wastewater background by utilizing spectral parameters. Finally, a new second-order derivative SFS for simultaneous determination of 1-NAP and 2-NAP was first established. The detection limits were 0.0850 ng·mL −1 for 1-NAP and 0.1066 ng·mL −1 for 2-NAP, with linear ranges of 0.5–80 ng·mL −1 and 0.5–50 ng·mL −1 , respectively. Recoveries of two naphthols in wastewater were 87.53%–93.50% (1-NAP) and 89.85%–104.00% (2-NAP). The new SFS established in this research has been successfully applied to the analysis and detection of 1-NAP and 2-NAP residues in wastewater, achieving satisfactory results. It is expected to become a new routine detection method for 1-NAP and 2-NAP.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Ting Yu,Yalei Li,Ruiming Luo,Shuang Gao,Qijian Jiang,Mengyao Ma,Lingling Zhang,Yuying Xiao
This study systematically investigated the quality changes of buckwheat hele noodles (BHN) during frozen storage at −18 °C for 80 days. Pronounced lipid–protein co-oxidation was observed, characterized by a 71.9% rise in malondialdehyde (MDA) and a 133.2% rise in carbonyl content. Sulfhydryl content showed a continuous decline, while the levels of key unsaturated fatty acids progressively decreased. The activities of lipoxygenase (LOX) and catalase (CAT) gradually diminished, thereby inhibiting enzymatic oxidation but promoting non-enzymatic oxidation. Microscopic analysis revealed a disrupted gluten network with enlarged pores, and the proportion of β-sheet structures in protein secondary structures increased significantly, suggesting enhanced protein aggregation and cross-linking. Flavor analysis indicated that the levels of aldehydes and ketones peaked at 40 days, with 2-nonenal and 1-octen-3-ol identified as the key off-flavor compounds. Correlation analysis confirmed that protein and lipid oxidation were the primary driver of quality deterioration in BHN during frozen storage.
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Yingnan Ma,Zhen Xu,Yulu Zhang,Zixuan Guo,Juan Chen,Panliang Zhang,Kewen Tang
This study innovatively proposed an in-situ confined polymerization strategy of trimesoyl chloride (TMC) and piperazine (PIP) within MOFs nanosheets, successfully constructing a thin film nanocomposite (TFN) separation membrane with excellent interfacial compatibility. The method employed MOFs nanosheets as confined templates to achieve bottom-up in-situ construction of a continuous and dense polyamide matrix. By precisely controlling the number of polymerization cycles, the MOFs content in the functional layer was effectively regulated from 83.3 wt% to 42.6 wt%. Benefiting from the molecular-level interfacial compatibility between MOFs and the polymer phase, as well as the synergistic effect of efficient solution diffusion and fine molecular sieving mechanisms, the TFN membranes demonstrated significantly enhanced CO 2 separation performance, CO 2 permeance reached 1688.3 GPU with selectivities of 36.4 for CO 2 /N 2 and 38.9 for CO 2 /CH 4 , which surpassed the Upper bound (2008 and 2019). The TFN membranes exhibited outstanding long-term operational stability (selectivity fluctuation <3.6%) under rigorous conditions including prolonged 14-day continuous testing and variable temperature (35-75 °C) and pressure (0.1-0.5 MPa) conditions. This work provided a new paradigm for the precise design and scalable fabrication of gas separation membranes, opening new avenues for the development of high-performance separation membranes.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Xinnan Ma,Juan Han,Pinxin Ni,Lei Wang,Yang Zhou,Jiacong Wu,Yun Wang
Enzymatic depolymerization of plastic waste represents a sustainable route toward monomer recovery for closed-loop recycling, yet its efficiency is hindered by poor enzyme accessibility to hydrophobic polymer surfaces and product inhibition. Here, we develop aqueous micellar two-phase emulsions (AMTPEs), formed by self-assembly of nonionic surfactants and polysaccharides, as an integrated catalytic and separation platform for enhanced enzymatic degradation of poly(ethylene terephthalate) (PET). These AMTPEs exhibit excellent stability and efficient co-encapsulation of PET substrates and hydrolases, via a synergistic “wetting-encapsulation” mechanism. The enzyme's affinity for the substrate was greatly increased, likely due to the dynamic microenvironment in the system. Meanwhile, the continuous polysaccharide phase enables simultaneous product removal to overcome the inhibition of products. The optimized Tween 80/Dex AMTPE system exhibits broad applicability across diverse PET hydrolases, boosting MHET production by 7.7-fold (FsC), 20.8-fold (Fast-PETase), and 15.0-fold (LCC) increases over buffer controls within 24 hours. Moreover, after four catalytic cycles that including the product recovery process, system still retained 92.6% of initial MHET production. This work establishes AMTPEs as an integrated and recyclable platform, thereby addressing the effectively addressing the inherent limitations of traditional PET biodegradation.
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RSC Advances
·
2026
·Vol. 16
·期 12
·11158
·
IF 6.1
Wenli Qin,Xinyi Zhang,Gaofeng Chen,Zhaoting Ji,Zengling Ma
The increasing influx of nutrients ( e.g. , nitrogen and phosphorus) into freshwater systems is exacerbating eutrophication in natural waterways. To address this issue, a novel magnetic photocatalyst composed of a carbon nanotube core and a titanium dioxide coating (denoted as C–TiO 2 –Fe 3 O 4 and C–TiFe 2 O 4 ) is successfully synthesized. Microcystis aeruginosa and microcystin-LR (MC-LR) in eutrophicated water can be efficiently inactivated by the composite via visible light photocatalysis. The incorporation of magnetic Fe significantly enhances cyanobacteria capture and improves the photocatalytic efficiency for algal inactivation and MC-LR breakdown. C–TiFe 2 O 4 exhibits the highest adsorption-photocatalysis performance with an inactivation efficiency of 77.9% after 7 hours. Under optimal conditions (7 h of reaction time, a catalyst dosage of 0.39 g L −1 , and an initial algae density of 1 × 10 6 cells per mL), the MC-LR removal rate is 89.1%. Notably, C–TiFe 2 O 4 maintains exceptional stability and reusability even after five cycles. The composite demonstrates promising potential for treating harmful algal blooms (HABs) across diverse environmental conditions. These findings highlight the viability of C–TiFe 2 O 4 as a sustainable and scalable technology to mitigate HABs and degrade MC-LR in contaminated water systems. The prepared magnetic photocatalysts, C–TiO 2 –Fe 3 O 4 and C–TiFe 2 O 4 , are sustainable and scalable technologies to mitigate HABs and degrade MC-LR in contaminated water systems.
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