INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Jiahui Gong,Mengfei Tian,Mengying Zhang,Xiaolong Yang,Yujiao Song,Hongying Ge,Wenxue Sun,Chunying Li,Chunjian Zhao
In this study, a novel polydopamine modified carboxymethyl chitosan molecularly imprinted resin (CMCS-MIR) was synthetized for selectively adsorbed and separated epicatechin (EC) from Rumex acetosa L. The preparation process involved modifying the surface of DM-130 resin to form the polydopamine (PDA) layer firstly, which facilitated an increase in adsorption sites. Subsequently, carboxymethyl chitosan (CMCS), a green functional monomer, was utilized along with glutaraldehyde as a crosslinking agent and EC as a template molecule to synthesize the CMCS-MIR. The synthesized CMCS-MIR exhibited an adsorption capacity of 53.30 mg·g −1 within 6 h and exhibited excellent selectivity and affinity towards EC (IF = 3.31). Moreover, the CMCS-MIR maintained stable adsorption performance and reusability with the adsorption efficiency remaining above 90 % in the fifth cycle. What's more, the CMCS-MIR can be used as a novel column filler in solid-phase extraction (SPE) to separate EC from extracts of Rumex acetosa L. roots. The adsorption recovery rate of EC is 89.56 %, the desorption recovery rate reaches 88.02 %. The DFT simulation and NMR experiments indicated that the predominant adsorption mechanism was due to the strong hydrogen bonding interactions. This work offers significant insights into the development of green molecularly imprinted materials with excellent selectivity and recognition capabilities.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Zhenhua Shi,Mengmeng Wei,Tong Gao,Dandan Fu,Masrina Mohd Nadzir,Junsheng Wang,Leihua Jia,Wenjiao Yuan,Bo Wang,Jinjun Yang
The poly(L-lactic acid) (PLA) is a biodegradable, biocompatible, and mechanically robust biological macromolecule that has been widely applied in various fields. However, the PLA is highly flammable and prone to dripping during combustion, posing potential fire safety risk. Moreover, it exhibits an extremely poor crystallizability. In this work, a halogen-free flame retardant (C-DPPC) was synthesized from a bio-based carboxymethyl cellulose (CMC), and a novel flame-retardant PLA composite (PLA/C-DPPC) was developed. The PLA/5 %C-DPPC achieved a limiting oxygen index (LOI) of 38.2 % and increased by 91.0 %, reaching the highest UL-94 vertical burning rating of V-0 with a self-extinguishing property. The peak heat release rate (pHRR), total heat release (THR), and carbon dioxide production (CO 2 P) decreased by 41.7 %, 53.7 %, and 53.6 %, respectively, demonstrating excellent flame retardancy and fire safety performance. The excellent fire-proofing effect is attributed to the condensed-phase (continuous, compact and dense char layer) and gaseous-phase (quenching effect of phosphorus–oxygen radicals on oxygen radicals) flame retardant mechanisms. In addition, the composite exhibited improved crystallization rate, significantly enhanced UV-shielding capability and hydrophilicity. This work provides a new strategy for the development of green multifunctional materials and offers a promising example for expanding the potential applications of the PLA-based composites.
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FOOD RESEARCH INTERNATIONAL
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2025
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IF 8
Ting Chen,Shiru Mo,Mingyue Shen,Wenzhuo Du,Qiang Yu,Yi Chen,Jianhua Xie
Ficus pumila L. has been reported to alleviate pulmonary inflammation, its impact on chronic obstructive pulmonary disease (COPD) pathobiology-specifically via modulation of the gut-lung signaling pathway-has yet to be mechanistically defined. This study investigated how Ficus pumila L. polysaccharides (FP-P) and aqueous extracts (FP-E) remodel the gut microbiome-SCFA network and restore microbial metabolic function in a cigarette smoke–induced COPD mouse model. Microbiota composition was profiled by high-resolution 16S rRNA amplicon sequence variant (ASV) analysis, with concomitant quantification of caecal SCFA using targeted gas chromatography–mass spectrometry (GC–MS) and inference of metagenome function by PICRUSt2. Results demonstrated that FP-P and FP-E alleviated pulmonary pathology, reduced inflammatory cytokine secretion, and significantly restored gut microbiota α-diversity in COPD mice. At the family level, FP-P selectively expanded SCFA-producing Clostridiaceae , and Staphylococcaceae , whereas it contracted pro-inflammatory Helicobacteraceae and Campylobacteraceae . Caecal total SCFA concentration increased by 41.90 %, driven primarily by elevations in butyrate (+23.41 %) and propionate (+45.45 %), without significant changes in acetate. PICRUSt2-inferred metagenomes showed up-regulation of butanoate biosynthesis (PWY-5677), metabolism of cofactors and amino acid (P162-PWY and NAD-BIOSYNTHESIS-II), and carbohydrate degradation (P341-PWY), all of which underpin SCFA production. These functional shifts were accompanied by increased abundance of microbial genes encoding ribosomal proteins and ATP-binding cassette transporters, indicating barrier reinforcement. Collectively, FP-P and FP-E mitigate CS-induced COPD pathology through a gut microbiota-SCFA-lung signaling signaling pathway, highlighting the gut-to-lung communication within the broader gut-lung axis. These findings establish a mechanistic link between microbial metabolism and pulmonary inflammation while acknowledging that the reverse lung-to-gut feedback remains to be elucidated. Future studies will investigate this bidirectional crosstalk and the receptor-mediated signaling of SCFAs in lung tissue.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Yuanxiu Liu,Tong Shi,Xiyue Cao,Xin Wang,Mengzhe Li,Chenya Lu,Xiaoli Zhang,Ying Tian,Li Yuan,Wengang Jin,Ruichang Gao
This study explored the influences of L-Arg in the ion migration and the quality of low-salt fish balls (L, 0.3 % NaCl). L-Arg significantly increased the weight gain and expansion rate of L by 18.33 % and 13.47 %. Water-holding capacity decreased from the internal to the external part of fish balls, consistent with the looser microstructure. Inductively coupled plasma-mass spectrometry (ICP-MS) revealed that L-Arg promoted Na + migration at setting ( P < 0.05), decreased the internal concentration from 34.38 to 30.37 mg/L and increased the external one from 25.78 to 29.80 mg/L ( P < 0.05). Conversely, Cl − concentration was decreased at setting and improved after the two-stage heating ( P < 0.05), indicating the suppressed Cl − migration. The partial replacement of Na + by L-Arg facilitated the protein unfolding, formation of disulfide bonds and exposure of tryptophan residues. This study enriched the mechanisms of salt reduction and quality maintenance for surimi products regarding ion migration.
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FOOD HYDROCOLLOIDS
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2025
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IF 12.4
Yan Wen,Yan Zhang,Na Lü,Zehui Xuan,Lili Lu
D-tagatose is an attractive functional sweetener, and its production via enzymatic synthesis is simple and environmentally friendly; however, it faces challenges related to enzyme and substrate costs. In this study, a novel and cost-effective method for synthesizing D-tagatose was established using L-arabinose isomerase (L-AI) immobilized within a sodium alginate (SA) composite hydrogel, with the low-cost guar gum as the starting material. Eight inorganic or organic materials were individually combined with SA to encapsulate L-AI. The immobilized enzyme prepared with SA and 50-nm SiO 2 particles demonstrated superior properties, including enhanced mechanical strength and improved reusability, compared to enzymes immobilized with other carriers. The structure of the immobilized enzyme was characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction. The D-tagatose synthesis reaction using the immobilized enzyme was optimized through both single-factor and statistical methods. The maximum yield of D-tagatose reached 30.12% from 1 M D-galactose at 68°C, with a productivity of 6.78 g/L/h. The immobilized enzyme was reusable for 20 cycles of reaction at 60°C, retaining over 55% of its initial activity and accumulating a high amount of 863.74 g/L D-tagatose. Furthermore, it efficiently converted guar gum hydrolysate into D-tagatose, retaining over 50% enzyme activity and yielding 114.32 g/L of D-tagatose after 10 cycles. The excellent enzyme reusability and the exploration of an economic substrate would significantly reduce production costs in large-scale D-tagatose synthesis in the future.
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Journal of Materials Chemistry C
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2025
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IF 5.1
Xuekai Wang,Yongze Cao,Guangming Niu,Huanhuan Zhang,Xianglan Yan,Yichao Wang,Sai Xu,Baojiu Chen
Er3+/Yb3+/Sr2+-doped L-Ta2O5 upconversion phosphors were synthesized using the molten salt method with B2O3 as the solvent. High-resolution transmission electron microscopy (HRTEM) results showed that Er3+/Yb3+/Sr2+ underwent intercalated intergrowth in L-Ta2O5. This structure facilitates energy transfer from Yb3+ to Er3+, resulting in outstanding pure green upconversion luminescence (UCL) intensity. The green UCL integrated intensity of L-Ta2O5:Er3+/Yb3+/Sr2+ was 1.53 and 3.14 times greater than that of β-NaYF4:Er3+/Yb3+ and the optimal NaY(WO4)2:Er3+/Yb3+ samples, respectively. The absolute and relative temperature sensitivity reached 1.383% and 0.992% K−1, respectively. The shift rate of the peak centroids reached 0.273 nm GPa−1 under high pressure. With its excellent performance, L-Ta2O5:Er3+/Yb3+/Sr2+ can be used in the fields of UCL display, temperature and pressure sensing.
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Materials
·
2024
·Vol. 17
·期 15
·3758
·
IF 3.1
Xin Sun,Huiwen Tian,Fangxin Zou,Weihua Li,Yujie Qiang,Baorong Hou
High toxicity is the main reason for the limited application of traditional corrosion inhibitors. Herein, it is critical to find a green, efficient, and long-term stable alternative substitute for the hazardous and conventional corrosion inhibitor.Ambrosia trifida Lis widely distributed in fields and riverside wetlands as an invasive plant in China. According to the concept of turning waste into treasure, the extract ofAmbrosia trifida Lleaves (ATL) has the potential to address this issue due to its natural origin and abundant presence of heterocyclic organics. Therefore, ATL, as a green corrosion inhibitor, is prepared for the first time via a simple water-based extraction method. FT-IR (Fourier transform infrared spectroscopy) and UV-Vis (UV-visible) indicate that ATL extract contains abundant heterocyclic organics with conjugated structures, which exhibit the potential to become a high-efficiency inhibitor. Notably, the active sites of ATL molecules and their interaction with Q235 steel at the molecular/atomic level are revealed via theoretical calculations. The highestEbindingvalue observed for the major components in the ATL extract is 259.66 kcal/mol, implying a significant adsorption capacity. The electrochemical results verify that microdose ATL extract can prominently inhibit steel corrosion, and the highest inhibition efficiency (η) is 97.5% (1000 mg/L). Following immersion for 24 h, theηvalue is enhanced to 99.0%, indicating a reliable and long-term ATL extract protection film is formed on the steel surface in harsh acidic solutions. The results of the weight loss, SEM (scanning electron microscope), and LSCM (laser scanning confocal microscopy) are consistent with the above conclusions. Finally, this study anticipates providing theoretical support for developing novel green plant extract inhibitors and aiding in their application in industrial pickling environments.
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JOURNAL OF DAIRY SCIENCE
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2022
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IF 4.225
Shuangyan Ding,Hailiang Hu,Xianglin Yue,Kaiwen Feng,Xiaoyu Gao,Qiuling Dong,Mingqi Yang,Ugur Tamer,Ganhui Huang,Jinsheng Zhang
ABSTRACT Salmonella , as a common foodborne pathogen in dairy products, poses a great threat to human health. We studied a new detection method based on quantum dots (QD). A fluorescent biosensor with multiple fluorescent signal amplification based on a streptavidin (SA) biotin system and the polyamino linear polymer poly- l -lysine (PLL) were established to detect Salmonella in milk. First, Salmonella was captured on a black 96-well plate with paired Salmonella mAb to form a double-antibody sandwich. Second, SA was immobilized on biotin-modified mAb by SA-biotin specific bond. Then, the biotin-modified polylysine (BT-PLL) was bound on SA and specifically bonded again through the SA-biotin system. Finally, water-soluble CdSe/ZnS QD-labeled SA was added to a black 96-well plate for covalent coupling with BT-PLL. The fluorescent signal was amplified in a dendritic manner by the layer-by-layer overlap of SA and biotin and the covalent coupling of biotinylated PLL. Under optimal conditions, the detection limit was 4.9 × 10 3 cfu/mL in PBS. The detection limit was 10 times better than that of the conventional sandwich ELISA. In addition, the proposed biosensor was well specific and could be used for detecting Salmonella in milk samples.
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FOOD CHEMISTRY
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2022
·
IF 9.231
Dongying Song,Yinghao Yun,Zijie He,Jiali Mi,Jiaxiang Luo,Min Jin,Qicun Zhou,Guoxing Nie
In order to further explain the fillet texture improvement of Yellow River carp ( Cyprinus carpio ) fed with faba bean ( Vicia faba L.), a three-month rearing trial was conducted to investigate fatty acid composition, antioxidant capacity, myofiber development, collagen deposition and transcriptome in white muscle of two farmed carp groups (One was fed only faba bean, the other was fed commercial diet). As a strong oxidant, faba bean changed fatty acids composition in white muscle, especially DHA and EPA, up-regulated the levels of reactive oxygen species (ROS) and down-regulated major antioxidant enzyme activities in the hepatopancreas and white muscle. Through the analysis of transcriptome and subsequent verification analysis, we speculated that the increase of ROS led to the decrease of myofiber diameter and collagen metabolism. This study provides a theoretical basis for further understanding the regulation of faba bean on fillet texture characteristic of Yellow River carp.
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Journal of Physical Chemistry Letters
·
2025
·
IF 4.6
Jiaxing Lv,Ying Jiang,Guozhong Lu,Xiaobing Lou,Bingwen Hu
In traditional operations of all-solid-state lithium metal batteries (ASSLMBs), a small thin lithium metal circular disk is employed as a lithium metal anode (LMA). However, ASSLMBs with a circular-disk LMA often fail in <150 cycles with low capacity retention. In this work, we developed a new ring-shaped LMA to improve cyclability. Full cells consisting of a ring-shaped LMA, a LiCoO2 cathode, and a Li6PS5Cl electrolyte maintain good capacity retention of 83.65% at 0.3C after 300 cycles. Moreover, in situ L-band electron paramagnetic resonance imaging (EPRI) showed that fewer Li dendrites are formed on a ring-shaped LMA. This work highlights the importance of the design of the shape of the LMA to mitigate the growth of lithium dendrites and shows that L-band EPRI is a useful technique for ASSLMBs.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2022
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IF 4.831
Xin-Ran Guo,Yu-Ming Dong,Xin-Yue Chen,Juan Chen
This article first reported the green synthesis of N, S co-doped fluorescent carbon dots (N, S-CDs-Sop) and sought to establish the fluorescence detection system for amoxicillin (AMX). By using Sophora japonica L. flower as the green precursor and dl -homocystine as the co-dopant, N, S-CDs-Sop were successfully prepared via a one-pot hydrothermal method, exhibiting good water solubility and excellent photoluminescence. It was revealed that the surface of N, S-CDs-Sop was abundant in amino, hydroxyl and carboxyl groups after being characterized by a variety of techniques. When Fe 3+ was added, Fe 3+ could be complexed with N, S-CDs-Sop to from N, S-CDs-Sop-Fe 3+ chelation leading to a significant static quenching of fluorescence. However, when N, S-CDs-Sop, Fe 3+ and AMX coexisted, AMX would coordinate with Fe 3+ and form the strong chelate due to the favorable chemical structure, resulting in the rapid fluorescence recovery. Such a fast, simple and sensitive fluorescence “off–on” strategy with a low LOD and a relatively wide range was successfully applied to the detection of AMX, which is closely correlated with human health.
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Foods
·
2022
·Vol. 11
·期 6
·855
·
IF 5.561
Xiuping Li,Wenhui Wang,Shouyin Wang,Yuqing Shen,Jinfeng Pan,Xiuping Dong,Shengjie Li
This study aimed to investigate the presence ofL-lysine (Lys) on the solubility and structures of myofibrillar proteins (MFPs) at different ionic strengths. Porcine MFPs were incubated at 4 °C with various levels of ionic strengths (0.15, 0.3, or 0.6 M NaCl) with or without the presence of 20 or 40 mM Lys. After 24 h of incubation, MFP solubility and turbidity were determined, and the particle size distribution, circular dichroism spectra, and intrinsic tryptophan fluorescence of MFP were analyzed to obtain their secondary and tertiary structure. Results showed that the solubilization effects of Lys on MFPs are dependent on the ionic strength. Particularly, the presence of Lys could improve MFP solubility at 0.3 M, which resembles salt-reducing processing conditions. Concomitantly, the secondary and tertiary structures were observed to change as a result of the varying ionic strengths and the addition of Lys, including myofibril swelling, dissociation of myosin filaments, uncoiling of α-helix, and unfolding of the tertiary structure. The possible mechanisms underlying the solubilization effects of Lys on MFPs at low ionic strengths are discussed from the perspective of protein structural changes.Keywords:myofibrillar proteins;L-lysine;solubility;conformation;low salt
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