Applied Food Research
·
2026
·Vol. 6
·期 1
·101723
·
IF 6.2
Dahe Qiao,Chun Yang,Xiaozeng Mi,Sihui Liang,Yan Guo,Juan Chen,Zhengwu Chen
Tea quality is synergistically shaped by raw material grade and processing, yet existing research has primarily focused on the processing stage, with systematic evaluations of the role of raw materials remaining insufficient. This study systematically investigated the flavor chemistry of the 'Qiancha 1′ (QC1) tea plant cultivar across tea types from multi-grade raw materials. Fresh leaves of QC1 (one-bud-one-leaf, one-bud-two-leaves, one-bud-three/four-leaves, open surface leaves) were processed into eight distinct tea products (green, black, oolong). Key taste components (catechins, theanine, caffeine, 20 amino acids, 18 flavonoids) were quantified via HPLC and LC-MS. Aroma volatiles (366 compounds) were analyzed using headspace solid-phase microextraction coupled with comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry (HS-SPME/GC × GC-TOF-MS). Multivariate analysis revealed significant compositional shifts driven by raw material grade and processing. Tea from one-bud-two-leaves exhibited the highest theanine content. The curling process markedly increased amino acids and aroma volatiles while reducing catechins and flavonoids levels. Lipids and esters dominated the volatile profile. Thirty-eight key aroma-active compounds were identified, defining QC1′s characteristic floral, green, and fruity notes. This work provides a chemical basis for optimizing QC1 tea processing, recommending one-bud-one/two-leaf raw materials for curly green or black tea to enhance characteristic flavor quality.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Tian Ma,Meijin Yan,Zhiwei Liu,Kun Li,Tifeng Jiao,Fei Liu
Wound healing is a highly complex biological process, and chronic wounds are susceptible to bacterial attacks. Traditional dressings only provide basic protection, while modern dressings are expected to integrate multiple functions, such as pollution isolation and healing promotion. Electrospinning membranes have gradually become research hotspots due to their ability to simulate extracellular matrix and their large specific surface area. In this study, we prepared chitosan (CS)/polycaprolactone (PCL)/tetradecyldimethylbenzyl ammonium chloride (TDBAC) composite nanofibrous membranes via electrospinning technology. When the mass ratio of PCL to CS was 6:5, the prepared PCL/CS fibrous membrane exhibited the optimal performance, with excellent morphological characteristics, mechanical properties, and hydrophilicity. After adding different contents of the antibacterial agent TDBAC to the PCL/CS solution with this ratio to prepare composite materials, it was found that all composite materials showed good antibacterial properties, and the antibacterial effect enhanced with the increase of TDBAC content. The PCL/CS/TDBAC composite with 1 % TDBAC content (PCL/CS/TDBAC1 %) demonstrated the best comprehensive performance, with colony inhibition rates of 99.93 % and 99.94 % against Staphylococcus aureus and Escherichia coli , respectively. This composite nanofibrous membrane meets the requirements of wound dressings for anti-adhesion, liquid absorption, and biosafety, providing a feasible approach for the development of high-performance antibacterial dressings and is expected to promote the advancement of wound care materials.
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FOOD CHEMISTRY
·
2026
·
IF 9.8
Suozhu Wu,Hao Wu,Guojuan Zhang,Hongyuan Guo
3-Monochloropropane-1,2-diol (3-MCPD) is a common contaminant generated during the heating process of foods. Because of the potential carcinogenic and toxic effects, measuring 3-MCPD is greatly significant to guarantee food security. Here, we developed a molecularly imprinted polyphenylboronic acid/carboxylated graphene (MIPPBA/CG)-based electrochemical sensor to determine 3-MCPD. The MIPPBA/CG composites were prepared by in-situ electrochemical deposition, and CG and MIPPBA were respectively used for electrical signal amplification and specific recognition of 3-MCPD. 3-MCPD was tested by square wave voltammetry utilizing the potassium ferricyanide probe. Under the optimal experimental conditions, our results showed that this sensor had the advantages of simplicity, rapidity, wide response range (1.0 × 10 −12 –1.0 × 10 −3 M), low detection limit (1.4 × 10 −13 M), good reproducibility, excellent stability, and high selectivity, and could detect the 3-MCPD content in different soy sauce samples with satisfactory results, which provided a promising approach for testing the food processing contaminant.
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Food Bioscience
·
2026
·
IF 5.9
Mingjing Zheng,Huan Ouyang,Luan Zhao,Yanbing Zhu,Zhipeng Li,Hui Ni,Zedong Jiang,Tao Hong
In vitro gut microbiota fermentation characteristics and anti-adipogenic effect of Bangia fusco-purpurea polysaccharide extracted with ultra-high pressure assisted extraction (UBFP) were investigated. Compared with polysaccharide obtained with traditional hot water extraction (BFP), UBFP significantly increased intestinal flora diversity and induced a beneficial shift in the microbial composition, which could suppress the growth of opportunistic pathogens such as Escherichia-Shigella and Streptococcus , while enriching the abundance of beneficial bacteria such as Enterococcus . Both BFP and UBFP increased short-chain fatty acids (SCFAs) production, particularly acetic acid. The total SCFAs content in the UBFP group showed a 1.83-fold greater increase than that in the BFP group relative to the control. Furthermore, UBFP fermented products could better inhibit 3T3-L1 preadipocytes from differentiating into mature adipocytes as well as lowering triglyceride and total cholesterol contents and inhibiting lipid droplet formation. Notably, the reduction of TG content by UBFP fermented products showed 1.07- to 2.87-fold greater efficacy than BFP fermented products ( p < 0.05). Western blot analysis revealed that UBFP fermentation products upregulated the pAMPK/AMPK ratio and downregulated PPARγ expression in 3T3-L1 cells, suggesting that the anti-adipogenic effect may be mediated through activation of the AMPK signaling pathway and inhibition of PPARγ expression. Although these bioactivities of UBFP were assessed using in vitro models and requires further validation through in vivo studies, this research nevertheless provided valuable insights into the potential role of UBFP in promoting intestinal health and regulating lipid metabolism.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Liang Gong,Lin Zhu,Wencheng Xu,Xiuzhi Shan,Miduo Tan,Yubin Gu,Juan Zhou,Sihua Liu
Influenza virus infections, particularly those caused by the Avian influenza virus, result in millions of deaths and substantial economic losses annually. Early diagnosis of the pathogen during the initial stages of an outbreak is pivotal for effective outbreak control. This study presents the development of an Exo III-mediated high sensitivity dual signal amplification (HSDSA) platform for detecting the H5N1 gene sequence. The detection mechanism is initiated by the hybridization of the target H5N1 DNA with hairpin DNA (Hp DNA) to form double-stranded structure. Hp DNA in this structure could be recognized and partial hydrolyzed by Exo III, releasing target DNA and free DNA. On one side, the target DNA enabled hybridize with other Hp DNA for circulate freely, achieving the first round of amplification. On the other hand, free DNA can hybridize with the DNA structure labeled on the gold nanoparticles, transforming the originally 3-terminal protruding double-stranded structure into a 3-terminal concave Exo III substrate structure. After triggering the Exo III recognition, the long chains (SH DNA) within dsDNA are hydrolyzed, and free DNA is released again to enter the next round of triggering for the second round of amplification. Meanwhile, another DNA labeled with carboxyfluorescein (FAM DNA) released from the hydrolyzed SH DNA, causing the fluorophore to detach from the AuNPs, the fluorescence signal is restored. This strategy significantly enhances detection sensitivity through double cyclic signal amplification mediated by Exo III, with a linear range from 0.08 nM to 15 nM and a detection limit of 54 pM for H5N1 DNA. The fluorescence sensor demonstrates robust applicability in detecting H5N1 in human serum samples, with recovery rates ranging from 98.75% to 105.83%. These results underscore the potential of the HSDSA platform for low-abundance molecular detection, disease diagnosis, and biomedicine applications.
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FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8
Xin Meng,Yijun Wang,Lianyao Cai,Huan Sun,Yiran Song,Wei Tao,Ying Gao,Chaohong Fu,Yong-Quan Xu
Black tea, due to its distinctive flavor, is the most popular type of tea worldwide. Tea producers and scientists devote themselves to the development of novel black tea with better and special flavors. In this study, cherry blossoms and tannase were added to black tea during processing, and their effects on the aroma and taste of black tea were evaluated by analyzing the sensory quality, contents of non-volatile and volatile components, and the antioxidant capacity. Combined with molecular sensory science, the characteristic aroma compounds of cherry blossom black tea were further validated. The results indicate that incorporating cherry blossoms and tannase during the fermentation stage of black tea effectively improved the aroma profile, the taste of the tea infusion, and its antioxidant capacity. This study established the aroma wheel of cherry blossom black tea for the first time and systematically characterized its characteristic aroma compounds, laying foundation for the development and production of cherry blossom black tea.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2026
·
IF 4.9
Defeng Wu,Bing Zhou,Yun Li,Siyu Lu,Zongbiao Liu,Jianlong Zhang,Mingliang Ma,Na Wang,Xin Shang,Kaiying Wang
Enhancing the visible light response of wide-bandgap semiconductors is crucial for the advancement of oxide-based solar devices. Here, we report a TiO 2 nanorod array (TNRAs)/BiVO 4 heterojunction photoanode fabricated via a cyclic spin-coating strategy, where the number of coating cycles (10, 15 or 20) is used to regulate the deposition of BiVO 4 . The formation of a type-II band alignment facilitated efficient charge separation, while the incorporation of BiVO 4 extended the light absorption from ∼400 nm to ∼500 nm, as confirmed by UV–Vis spectroscopy. Electrochemical impedance spectroscopy revealed reduced charge transfer resistance, and density functional theory (DFT) calculations showed that the bandgap narrowed and visible-light absorption increased with increasing BiVO 4 thickness. The optimized heterojunction (15 deposition cycles) delivers a photocurrent density of 1.41 mA cm - 2 in the quasi-solid-state solar cell ∼19 times that of the pristine TNRAs (0.075 mA cm - 2 ) with a power conversion efficiency of 0.277%. The device also exhibits remarkable photocurrent stability in the quasi solid electrolyte (QSE). This study elucidates the interplay between heterointerface structure and optoelectronic performance and offers a scalable route to engineering stable, high-efficiency, oxide-based solar energy systems.
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International Journal of Green Energy
·
2026
·
IF 3.1
Wei Liu,Caihang Liang,Ronghui Qi
Q235 carbon steel is widely used in seawater cooling systems but suffers severe corrosion in high-salinity environments. Conventional inhibitors are limited by poor water solubility and environmental risks. Here, we synthesized glyoxal-modified guanine (GGO) by introducing hydrophilic – OH groups and coordination-active (C = N/C – N) sites, increasing aqueous solubility from < 1 mg/L (guanine) to 3.289 g/L. Electrochemical and weight loss tests showed that GGO achieved a corrosion inhibition efficiency of 96.15% at 200 ppm in 3.5 wt.% NaCl, greatly surpassing unmodified guanine. SEM, contact angle, and 3D profilometry revealed that GGO formed a compact, hydrophobic protective film, significantly reducing corrosion pits and surface roughness. Adsorption isotherms and thermodynamic analysis indicated that GGO adsorption involves both chemisorption and physisorption, with a more negative Gibbs free energy than guanine. Quantum chemical calculations and molecular dynamics simulations demonstrated that polar functional groups promote strong adsorption and coordination with the steel surface, blocking chloride attack and stabilizing the inhibitor layer. XPS confirmed Fe – N coordination bonds and organic species in the protective film. This study provides a high-efficiency, eco-friendly corrosion inhibition strategy for Q235 carbon steel in saline environments and guides the rational design of green inhibitors for industrial applications.
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RSC Advances
·
2026
·Vol. 16
·期 2
·1202-1211
·
IF 4.6
Qiuyun Huang,Shiyu Liu,Weihua Shen,Yunjin Fang
For the carbonylation of methyl nitrite (MN) to dimethyl carbonate (DMC), a series of Ce(x)-UiO-66 were synthesized and utilized as supports for Pd/Ce(x)-UiO-66 catalysts. The characteristics of the carriers were investigated using XRD, SEM, TG, NH3-TPD and BET analyses. The results showed that doping cerium in the UiO-66 significantly enhanced the catalytic activity by improving the surface area, acidity and CO adsorption of the catalysts. Ce(0.1)-UiO-66, with the highest thermal stability (547.26 °C), presented the highest catalytic stability in DMC synthesis. It was proven that the damage of CO and the migration of Pd atoms occurred due to the replacement of ligands and metal clusters, which led to catalytic deactivation.
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MATERIALS CHEMISTRY AND PHYSICS
·
2026
·
IF 4.7
Sheng Lin,Yuting Wang,Chunxiang Huang,Yu Niu,Yongming Liu,Wangchuan Xiao,Fenghua Chen,Rongrong Xue
Co-amorphous systems, including co-amorphous and co-amorphous salts, can enhance the solubility of poorly water-soluble small molecules. It is important to identify them because co-amorphous and co-amorphous salts have different physicochemical properties. Co-amorphous system of luteolin (LUT, a well-known poorly soluble flavonoid) and amino acids at a molar ratio of 1:1 was prepared using neat ball milling. Only amorphous luteolin-arginine (LUT-Arg) and luteolin-lysine (LUT-Lys) exhibit significant solubility enhancements in the media of water and PBS. The Δ p K a rule suggests that LUT-Arg (Δ p K a , 2.8) and LUT-Lys (Δ p K a , 2.9) are close to co-amorphous salts. Diffuse reflectance spectroscopy and Raman spectroscopy confirmed that LUT-Arg and LUT-Lys are co-amorphous salts, while IR spectroscopy, the most common used method, cannot distinguish them. Comprehensive multiple characterizations (>2) are essential to confirm the formation of co-amorphous or co-amorphous salts, such as applying the Δ p K a rule, diffuse reflectance spectroscopy, and Raman spectroscopy for LUT-Arg and LUT-Lys.
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Science Advances
·
2026
·Vol. 12
·期 1
·
IF 12.5
Yunqi Xiao,Shanyu Zhang,Xinmeng Gao,Tian Li,Hanhan Zhang,Panke Zhang,Shuo Huang
Oligosaccharides, polymers of covalently linked monosaccharides, are essential biomolecules mediating diverse biological and physiological processes. Despite their critical roles, the structural complexity of many oligosaccharides poses a notable challenge for comprehensive characterization, limiting our understanding of their biological functions. Nanopores as emerging single-molecule sensors offer promise for oligosaccharide structural analysis. Here, we demonstrate direct discrimination of diverse mono- and oligosaccharides using a hetero-octameric Mycobacterium smegmatis porin A (MspA) nanopore integrated with a single phenylboronic acid (PBA) adapter (MspA-90PBA). The high-resolution event signatures generated by MspA-90PBA enable structural analysis of complex oligosaccharides via hydrolysis into smaller fragments, which can be analyzed for either structure profiling or determination. Using a minimized reference database, we achieve structural determination of raffinose, stachyose, and verbascose through nanopore characterization of its hydrolyzed fragments followed by fragment assembly. This work establishes a framework for nanopore-based oligosaccharide analysis, combining single-molecule sensing with a fragment assembly strategy to address the long-standing challenge of glycan structural elucidation.
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Journal of Future Foods
·
2026
·
IF 7.2
Yihang Zhao,Hangqi Li,Bingkun Bao,Yinzhao Luo,Jingyu Hao,Jun Gong,Sufang Duan,Zhigang Liu
The gut-brain axis is increasingly implicated in Alzheimer's disease (AD), offering a promising target for nutritional interventions. Bovine milk fat globule membrane (BMFGM) is a bioactive component known to modulate gut microbiota and confer neuroprotection. However, the precise molecular mechanisms linking BMFGM to AD amelioration remain elusive. This study demonstrates that BMFGM supplementation significantly improves cognitive performance in 5xFAD transgenic mice, accompanied by reduced amyloid-beta deposition, suppressed neuroinflammation, enhanced brain-derived neurotrophic factor (BDNF) expression, and recovered gut barrier integrity. Importantly, BMFGM significantly reduced interleukin-1β (IL-1β) expression in the colon, serum, and cortex, indicating IL-1β suppression as a central mechanism linking gut, systemic, and neuroinflammation. BMFGM reshaped the gut microbiota and increased fecal butyrate level, which correlated positively with cognitive outcomes. Crucially, antibiotic-induced microbiota depletion or pharmacological blockade of free fatty acid receptor 2 (FFAR2) via GLPG097 abrogated the cognitive, inflammatory, and neuropathological benefits conferred by BMFGM. Collectively, this study elucidates a specific microbiota-metabolite-receptor axis for dietary neuroprotection and highlights butyrate signaling as a critical pathway for AD prevention and management.
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