INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Yu Sun,Jia-Xiang Yang,Xu Zhang,Yun Liu
Viscose fabrics are characterized as good moisture absorption and dyeability, but the disadvantage of being extremely flammable limits the application of viscose fabrics. In this paper, tea polyphenols (TPs), amino trimethylphosphonic acid (ATMP) and urea were used to synthesize a semi-durable and efficient flame retardant, TBP. The limiting oxygen index (LOI) of Viscose/TBP was 44.2 %, and peak heat release rate was decreased by 91.5 %, indicating the fire risk of viscose fabrics was reduced. Viscose/TBP200-20Ls can pass the vertical flame test after 20 laundering cycles (Ls), and LOI reached 27.0 %. TBP did not cause damage to the mechanical properties of treated viscose fabrics. The transmittance of Viscose/TBP showed a significant reduction compared with those of viscose fabrics in ultraviolet-A and ultraviolet-B region, and its ultraviolet protection factor value reached 86.1 which was better for anti-ultraviolet properties. In a word, Viscose/TBP with anti-ultraviolet properties and flame retardancy was successfully prepared. Meanwhile, flame-retardant viscose fabrics' tensile strength was not decreased.
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高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Fangcong Lin,Leiping Wang,Xiaorong Dai,Zun Man,Yang Meng,Dongtao Chu,Yuting Yang,Wei Wang,Hang Xiao,Kaiying Wang
Effective treatment of hydrogen sulfide (H 2 S) is crucial for minimizing nuisance odors from intensive livestock and poultry operations. The development of high-performance desulfurizers holds practical significance in this context. Herein, a novel CuO-CaCO 3 co-impregnated biochar desulfurizer (Cu x Ca y /BC T ) was synthesized by impregnation-pyrolysis method, using waste tea stalks and metal salts as raw materials, and it is intended for the treatment of H 2 S at room temperature. The optimized Cu 0.75 Ca 0.25 /BC 800 shows an excellent H 2 S removal capacity of 182.67 mg/g, which is 31 times and 5.6 times that of inactivated biochar (BC 800 ) and copper-oxide-impregnated biochar (Cu 0.75 /BC 800 ). The desulfurization mechanism of Cu 0.75 Ca 0.25 /BC 800 involves synergistic effect of reactive adsorption and catalytic oxidation . CaCO 3 ’s alkaline adsorption sites and copper-mediated activation of superoxide radicals (∙O 2 - ) were critical in this reaction. Besides, Cu 0.75 Ca 0.25 /BC 800 demonstrated excellent reusability, retaining approximately 85 % of its initial H 2 S removal capacity after seven cycles of desulfurization and regeneration. This study aims to develop a metal oxide- and carbonate-impregnated biochar-based desulfurizer, with the goal of advancing the technology for catalytic removal of H 2 S in a more environmentally friendly and effective manner.
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FOOD CHEMISTRY
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2024
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IF 8.5
Jinping Zhou,Laifeng Chen,Hooi Ling Foo,Zhenhui Cao,Qiuye Lin
The present study aimed to determine microbial community , short-chain fatty acids (SCFAs), and volatilome of Bulang pickled tea during fermentation. Sequencing of 16S rRNA and ITS revealed that Bualng pickled tea was dominated by Lactobacillus plantarum , unclassified Enterobacteriaceae , unclassified Debaryomyces , Candida metapsilosis, Cladosporium sphaerospermum , and unclassified Aspergillus . The overall contents of SCFAs increased, with acetic acid showing the highest content. A total of 398 differential volatile metabolites were detected using differential metabolomics analysis. Out of these different volatile compounds , ten key volatile compounds including (Z)-4-heptenal, 1-(2-thienyl)-ethanone, 5-methyl-(E)-2-hepten-4-one, 2-ethoxy-3-methylpyrazine, p-cresol, 2-methoxy-phenol, ethy-4-methylvalerate, 3-ethyl-phenol, p-menthene-8-thiol, and 2-s-butyl-3-methoxypyrazinewere were screened based on odor activity value (OAV). The Spearman correlation analysis showed a high correlation of SCFAs and volatile compounds with microorganisms, especially L. plantarum and C. sphaerospermum . This study provided a theoretical basis for elucidating the flavor quality formation mechanism of Bulang pickled tea.
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高影响因子
Materials Today Bio
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2024
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IF 8.7
Min Wang,Aoling Yu,Wen Han,Jingyi Chen,Chunhua Lu,Xiankun Tu
Ferroptosis, a newly discovered form of regulated cell death, has garnered significant attention in the field of tumor therapy. However, the presence of overexpressed glutathione (GSH) and insufficient levels of H 2 O 2 in the tumor microenvironment (TME) hinders the occurrence of ferroptosis. In response to these challenges, here we have constructed the self-assembled nanocomplexes (FeE NPs) utilizing epigallocatechin-3-gallate (EGCG) from green tea polyphenols and metal ions (Fe 3+ ) as components. After grafting PEG, the nanocomplexes (FeE@PEG NPs) exhibit good biocompatibility and synergistically enhanced tumor-inhibitory properties. FeE@PEG NPs can be disassembled by H 2 O 2 in the TME, leading to the rapid release of Fe 3+ and EGCG. The released Fe 3+ produces large amounts of toxic •OH by the Fenton reactions while having minimal impact on normal cells. The generated •OH effectively induces lipid peroxidation, which leads to ferroptosis in tumor cells. Meanwhile, the released EGCG can autoxidize to produce H 2 O 2 , which further promotes the production of •OH radicals and increases lipid peroxide levels. Moreover, EGCG also depletes the high levels of intracellular GSH, leading to an intracellular redox imbalance and triggering ferroptosis. This study provides new insights into advancing anticancer ferroptosis through rational material design, offering promising avenues for future research.
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FOOD CHEMISTRY
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2024
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IF 8.5
Renliang Zhao,Hengbin Yao,Ziyan Hou,Qiongqiong Zhou,Mengyao Zhao,Chunlai Wu,Lipan Zhang,Chao Xu,Hui Su
Fu Brick Tea (FBT) is characterized by Fungus Aroma (FA), which determines the quality of FBT products. However, the aroma constituents and their interactive mechanism for FA remain unclear. In this study, the FBT sample with the optimal FA characteristics was selected from 29 FBTs. Then, 19 components with OAV ≥ 1 were identified as the odorants involved in the FA formation. The aroma recombination test suggested that the FA was potentially produced by the synergistic interplay among the 15 key odorants, including ( E,E )-2,4-heptadienal, ( E,E )-2,4-nonadienal, ( E )-2-nonenal, ( E,Z )-2,6-nonadienal, ( E )-2-octenal, ( E )- β -ionone, 4-ketoisophorone, dihydroactinidiolide, ( E )- β -damascenone, 1-octen-3-ol, linalool, geraniol, heptanal, hexanal, and phenylacetaldehyde. And, the synergistic effects between them were preliminarily studied by aroma omissions, such as modulatory effects, masking effects, compensatory effects, and novelty effects, ultimately contributing to the FA. In all, this work helps us better understand the formation of the FA and provides a basis for the improvement of FBT production technology.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Liya Fan,Xiaoxuan Xi,Xiaoyan Zhao,Xiao Zhu
The method of adding additives at once not only increases costs, but also poses a risk of excessive consumption. Therefore, the slow-release technology was employed for improving the utilization efficiency and edible safety of additives in this work. The poly (N-isopropylacrylamide) (PNIPAM) and polylactic acid (PLA) composite hydrogels with sheath-core structure were fabricated by in-situ spinning method. The mechanical bearing capacity of PNIPAM hydrogel was improved by controlling the structure of PLA electrospun fiber membrane. The results showed that the compression resistance of the samples coated with PLA was increased 931 % at 50 % deformation. In addition, the surface wettability of samples was studied to ensure the stable water permeability. The composite hydrogel was used for the sustained release of tea polyphenol (TP) antioxidant. The release effect of TP at different temperatures, and radical scavenging effect of 2, 2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2-Phenyl-4,4,5,5-tetraMethyliMidazoline-3-oxide-1-oxyl) (PTIO) were investigated. It was found that the release rate for TP could reach to 77.8 % at 30 °C. The radical clearance rates of ABTS and PTIO were 99.2 % and 46.6 %, respectively. This work provides effective ideas for the use of antioxidants in food preservation processes.
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FOOD RESEARCH INTERNATIONAL
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2025
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IF 8
Die Dong,Tenglong Geng,Lidan Pan,Xiaorui Liu,Chenxi Yu,Chao Yuan,Li Guo,Meng Zhao,Bo Cui
In this study, covalent octenyl succinic anhydride starch-soy protein- (−)-Epigallocatechin-3-gallate (OSAS-SP-EGCG) complexes were synthesized by H 2 O 2 / ascorbic acid radical grafting method. Particle size, ζ-potential, Fourier transform infrared, and thermogravimetric results proved the formation of covalent OSAS-SP-EGCG complexes. The results of scanning electron microscopy and atomic force microscopy confirmed that the particles of the covalent complexes (especially 1:4 complexes) were more uniformly distributed. Compared with single OSAS, the covalent complexes exhibited excellent antioxidant capacity (>70 %). Static/dynamic contact angle, dynamic interfacial tension and quartz crystal microbalance were used to characterize the interfacial properties of the samples. Results showed that the stronger hydrophobicity of the complexes resulted in lower interfacial tension, which was stabilized at 17 mN/m after 45 min. Among the complexes, 1:4 complexes showed the most visible interfacial properties, with the initial and equilibrium surface values increasing by 12.1 % and 24.3 %, respectively. Moreover, the saturated f displacement of 1:4 complexes reached 50.45 Hz. It was indicated that better interfacial adsorption capacity of the complexes allowed them to adsorb more quickly to the oil-water interface and form thicker and denser interfacial films. This work provides a promising avenue for improving the interfacial properties of covalent polysaccharide-protein-polyphenol complexes.
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Journal of Materials Chemistry A
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2025
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IF 9.5
Shuwen Zhu,Huiqing Fan,Yuxin Jia,Yongbo Fan,Weijia Wang
Due to the unique properties of heterojunction interfaces, heterojunction materials have broad application prospects in gas sensors. In this study, we synthesized In2O3 microrods through direct calcination of MIL-68(In) at ambient condition. Subsequently, WO3/In2O3 n-n heterojunction composites were built via a solvothermal method. The sensors fabricated with this heterojunction demonstrated exceptional TEA sensing capabilities, such as excellent selectivity and stability, a high response value of 678.43 to 20 ppm TEA, a fast response time (11 s) and a low operating temperature of 160°C. The increased sensing performance is attributed to the improved specific surface area, distinct barrier-controlled electron transport present in n-n type heterojunctions, and the unique selectivity of WO3 to TEA. This work not only offers a strategy for creating heterojunction-rich sensing materials, but also an efficient way for TEA detection.
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ACS Applied Polymer Materials
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2025
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IF 4.7
Jin Han,Fang Chen,Weipeng Qin,Lei Wang,Dan Wu,Kun Shen,Xiaoxue Yin,Qingquan Xue
The practical application of tea tree oil (TTO) as a natural broad-spectrum antimicrobial agent is limited by high volatility, chemical instability, and compatibility challenges with conventional polymer matrices. In this study, an antimicrobial thermosetting system with controlled hydrolysis was constructed. The N,N,N′,N″,N″-pentamethyldipropylenetriamine (PMD) cured samples exhibited superior mechanical and thermal properties in comparison to the N,N,N′,N′-tetramethyl-1,6-hexanediamine (TMHDA) or N,N,N′,N′-tetramethyl-1,3-propanediamine (TMPDA) cured samples. The TTO-loaded β-cyclodextrin (β-CD) was cross-linked by a rapid quaternization reaction to give the thermoset with quaternary ammonium contact-mode antimicrobial and TTO pharmaceutical antimicrobial properties. The remaining tertiary amine groups in the system provide a weakly alkaline environment, while the quaternary ammonium ester (Quat Ester) groups undergo weak base accelerated hydrolysis. The tensile strength of the cured system reached 23.69 MPa, and the antimicrobial activity against Escherichia coli and Staphylococcus aureus reached 95.27 and 95.63%, respectively; the antimicrobial performance could be further enhanced when long-chain cetyl chloroacetate (CCA) was involved in the curing (the antimicrobial activity reached 98.33 and 98.07%, respectively). The antimicrobial and pH-responsive degradation properties provide ideas for the development of degradable and antimicrobial materials for three-dimensional (3D) printing, solid disinfectants and so on.
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FOOD CONTROL
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2024
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IF 5.6
Xiaoxiao Wu,Suleiman A. Haruna,Nazhi Lv,Fangling Jiang,Yu Xia,Qingguo Cai,Qingmin Chen,Xiaomei Chen,Tianhui Jiao,Quansheng Chen
The identification of white tea mainly relies on sensory evaluation and mass spectrometry methods, which have drawbacks such as strong subjectivity and complex analysis. Thus, this study established a novel approach based on colorimetric indicator displacement assay (IDA) sensor to achieve rapid and accurate white tea identification. Cost-effective dyes and phenylboronic acids with different substituents were selected as the indicator and receptor, respectively. A color-signal-responsive IDA sensor array was constructed to enable the rapid and sensitive identification of white tea. Additionally, three supervised pattern recognition algorithms were utilized to process image data. The results demonstrate that combining the IDA sensor with the random forest algorithm accurately differentiates white tea samples by origin and type, achieving a 100% recognition accuracy in both training set (n = 84) and prediction set (n = 56) when ntree = 1000. This work offers an economical and efficient method for the rapid identification of white tea products.
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CERAMICS INTERNATIONAL
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2024
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IF 5.1
Jiayun Guo,Shuyi Ma,Gege Fan,Ping Ni,Nina Ma,Yinyue Wang,Jiamin Zhu,Heng Wang
In this paper, NdFeO 3 nanofibers were synthesized by the electrospinning method for the first time and used for the detection of triethylamine. XRD, SEM, TEM, BET, XPS, and gas-sensitive test instruments were used to detect the morphology, structure, and gas-sensitive properties of the synthesized products. The results show that the average diameter of the nanorods is about 275 nm. The specific surface area is 10.298 m 2 /g, the total pore volume is 0.112 cm 3 /g, and the average pore diameter is 43.469 nm. Gas sensing tests were carried out on NdFeO 3 nanofibers. The gas-sensitized element was found to have a low optimal operating temperature of 190 °C. The response to 100 ppm triethylamine was 18.9. The response time and recovery time were 72 and 35 s, respectively. A series of test results showed that the sample had excellent selectivity, reproducible detection, long-term stability, and a low detection limit for triethylamine. It has a lot of potential for practical TEA monitoring and detection.
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LWT-FOOD SCIENCE AND TECHNOLOGY
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2025
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IF 6.6
Fei Zhou,Jinchao Wang,Xuming Jiang,Zhangfeng Zhao,Jiang Shi,Lipeng Hu,Baiyi Lu,Jiyu Peng
Grinding is an essential process in green tea powder production, which greatly affects the final quality. However, in-depth studies on process parameter-quality correlations are lacking, especially regarding the multiple process parameters induced variability. In this work, the influence of process parameters (ambient temperature, rotational speed, and grinding time) on physicochemical and sensory metrics of green tea powder was investigated with univariate and multivariate analysis. Both rotational speed and grinding time contribute to reducing the particle size and water holding capacity (WHC), and increasing lightness, greenness, and yellowness of green tea powder, while low ambient temperature can help to improve the WHC and flowability. Rotational speed is significantly related to the concentrations of gallic acid, catechin, epigallocatechin gallate, and epigallocatechin gallate ( p < 0.01). Rotational speed and grinding time are closely related to the final appearance of green tea powder, while temperature is the dominant factor influencing its aroma.
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危险品化学品经营许可证（带存储）