LWT-FOOD SCIENCE AND TECHNOLOGY
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2026
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IF 7.1
Bin Zhong,An Wang,Jin-Song Liao,Jun-Ru Qi,Qi Zou,Zi-Yuan Zhang,Li-Yuan Xin,Xiao-Yin Wang
NTPP, NTLP and NTBP exerted different physicochemical property and bioactivity. • Peels were selected as optimal part for Nanfeng tangerine polysaccharide extraction. • Extraction conditions of NTPP were optimized, with a validated yield of 26.09%. Massive tangerine by-products from fresh-eating, juicing or plantation management cause pollution and waste. Polysaccharide recovery offers a high-value solution. This study aimed to optimize polysaccharide extraction from Nanfeng tangerine by-products, focusing on part selection and extraction conditions. Polysaccharides from peels (NTPP), leaves (NTLP) and branches (NTBP) of Nanfeng tangerine were extracted with citric acid. Their yield, chemical composition, physicochemical properties, antioxidant activity and α-glucosidase inhibitory activity were compared to select the most suitable part. Extraction parameters for the selected part-derived polysaccharide were optimized using single-factor experiment, Box-Behnken design and response surface methodology. Results showed that NTPP, NTLP and NTBP differed in chemical composition, physicochemical properties, antioxidant activity and α-glucosidase inhibitory activity. NTPP exhibited the highest yield, the strongest 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), 1,1-diphenyl-2-picryl-hydrazyl (DPPH), hydroxyl (OH) and superoxide anion (O 2 − ) radicals scavenging capacities with half maximal inhibitory concentration (IC 50 ) values of 15.89, 4.91, 4.15 and 6.93 mg/mL, and the best Fe 2+ chelating ability with concentration for 50% of maximal effect (EC 50 ) value of 4.40 mg/mL. NTPP and NTBP showed stronger α-glucosidase inhibitory activity with IC 50 values of 2.09 and 1.87 mg/mL. Therefore, peels were selected as the optimal part. Significant correlations existed between the above bioactivities and chemical composition and physicochemical properties. The extraction conditions of NTPP were optimized and adjusted to pH 1.67, extraction temperature 99.0 °C, liquid-solid ratio 16.0 mL/g and extraction time 60.0 min, yielding a validated yield of 26.09%. These findings provide a foundation for the exploitation and utilization of polysaccharides from Nanfeng tangerine by-products. Download: Download high-res image (666KB) Download: Download full-size image
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Exploration
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2026
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IF 30.4
Ruijia Wang,Hongda Guo,Tao Zhang,Xiaoxia Chen,Min Ge,Shujun Li,Jian Li,Bing Tian,Bernd Strehmel,Shouxin Liu,Andrey L. Rogach,Tony D. James,Zhijun Chen
Fixation of CO 2 through photocatalytic cycloaddition with epoxides to synthesize cyclic carbonates is an important but challenging process. In this work, carbon dots (CDs) synthesized from gallic acid and polyethylenimine are used for the efficient catalytic cycloaddition of CO 2 with epoxides in the absence of any solvent, additives, and halides, and importantly upon irradiation by natural sunlight. Specifically, carbon dots generated thermal energy and electrons upon solar irradiation, which together with their surface N-sites activated the inert CO 2 . Meanwhile, epoxides were activated by the surface hydroxyl and carboxylic groups of the carbon dots, which reacted with activated CO 2 at solar thermal-induced high temperatures. The CDs shows excellent stability and recyclability during the catalysis. A 1000 mmol scale reaction for cyclic carbonate synthesis performed well upon irradiation with natural sunlight in the presence of CDs, showing great potential for the industrial application due to the simple, mild, and energy-saving process.
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高影响因子
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
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2025
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IF 1.9
Xiao-Liang Zhao,Kai-Li Qi,Hui Han,Hai-Dong Wen,Yan-Mei Liu,Qing-Song Zhou,Yuan-Yuan Ma,Cun-Jin Wang,Jing Zhang,Ji Zhang,Wei-Jie Zhang
Olive pomace, a by-product of olive oil production, remains underexplored despite its potential environmental and economic benefits. This study sequentially extracted three polysaccharides (OERC, OERH, and OERA) from olive pomace using water at room temperature, hot water (80 °C), and 2% Na2CO3 solution (60 °C). Characterization through UV–Vis spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, high-performance liquid chromatography, and Congo red experiment revealed that these polysaccharides are heteropolysaccharides primarily composed of glucose, mannose, rhamnose, and galactose, each with distinct molar ratios. The polysaccharides exhibited significant antioxidant activity by scavenging hydroxyl, DPPH, and superoxide radicals, with OERC showing the highest potency. They also repaired H2O2-induced oxidative damage in HepG2 cells, with OERC at 400 μg/mL and OERH/OERA at 200 μg/mL displaying optimal efficacy. Additionally, these polysaccharides effectively inhibited α-glucosidase activity, enhanced glucose consumption, and increased glycogen content in insulin-resistant models, thereby exerting hypoglycemic effects. Furthermore, they promoted proliferation, phagocytosis, and nitric oxide release in RAW264.7 macrophages, demonstrating immunomodulatory effects. These results indicate that sequential extraction under varying conditions is an effective method for preparing polysaccharides. The three polysaccharides isolated in this study show great potential for development as functional products with antioxidant, hypoglycemic, and immunomodulatory applications.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2025
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IF 6.3
Chenkun Yu,Ze Liang,Ruoyao Zhou,Tingting Gao,Fangzhi Zhang,Congde Qiao,Jinshui Yao,Qinze Liu
Background Nuclear energy as a kind of clean energy has been vigorously developed. The possibility of nuclear leakage may discharge harmful substances, among which radioactive iodine is one of them. The iodine may be discharged into the environment in the form of vapor and solution, and the effective removal of them has obviously become an important and arduous task. Methods In this paper, two nitrogen-rich polymers, PY-PEI (poly(polyethyleneimine-pyrogallic)) and LS-PY-PEI (poly(Sodium lignosulfonate-polyethyleneimine-pyrogallic)) were successfully synthesized for iodine adsorption. 3) 3) Significant Findings: The experimental data showed that the capacities of the two for iodine capture in vapor were 3.57 g g -1 (PY-PEI) and 3.25 g g -1 (LS-PY-PEI), 1054 mg g -1 (PY-PEI) and 1035 mg g -1 (LS-PY-PEI) in iodine n-hexane organic solvent. Besides, both of them possessed rapid adsorption. Therefore, two efficient iodine adsorbent materials were successfully synthesized by designing nitrogen-rich sites and electron-rich groups in the molecules.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Yihan Li,Xuezhu Zhang,Xiaoxiao Wang,Fushuo Shen,Yan Zhang,Changxin Du,Peng Shun,Likai Wang,Xiaobin Wang,Qiang Liu,Qinze Liu
Hexavalent chromium (Cr(VI)) is a highly toxic pollutant with substantial risks to ecosystems, rendering its efficient removal from waters a critical challenge. This study fabricated a novel poly(pyrogallol-tetraethylenepentamine)/carbonizing corncob (PPTA/CC) composite for Cr(VI) decontamination by decorating mussel-inspired resin onto carbonized corncob (CC) via a facile modification strategy. The PPTA/CC hybrid synergistically integrated the hierarchical porosity of the CC support with the abundant phenolic hydroxyl and amino functional groups of PPTA polymer layer, thereby facilitating rapid adsorption-reduction of Cr(VI). The theoretical maximum adsorption capacity was determined to be 787 mg g −1 , with the process being spontaneous (as indicated by negative ΔG°) and endothermic, well-described by the Langmuir isotherm and pseudo-second-order kinetic models. PPTA/CC candidate also exhibited outstanding selectivity and stability toward Cr(VI) in the presence of common coexisting ions. These results highlight PPTA/CC as a promising composite material for the efficient remediation of Cr(VI) in wastewater treatment applications.
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JOURNAL OF RARE EARTHS
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2025
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IF 7.2
Bingjie Han,Yuxin Huang,Xuan Liu,Yuanyuan Bao,Shujing Li,Zhaohui Qu,Yongbo Lyu,Ke Wu
At present, the widespread biomedical application of cerium oxide nanoparticles (CeO 2 NPs) is still limited due to their tendency to aggregate in biological fluids, which reduces their specific surface area and diminishes their mimetic enzyme activities (e.g., catalase- or superoxide dismutase-like functions). In this work, ultra-small CeO 2 NPs modified by biodegradable glycerol (GCNs) were synthesized using a facile co - precipitation method at ambient temperature. The effect of glycerol modification on the physicochemical properties of ceria nanoparticles was evaluated, and it is noteworthy that the size of the GCNs decreases gradually from (8.42 ± 0.03) to (2.66 ± 0.02) nm, along with the resulting dispersibility in water improving inversely as the percentage of glycerol addition increases. In addition, the modification of glycerol also has a significant impact on the surficial electronic structure of GCNs. Compared to the unmodified CeO 2 counterparts (Ce Naked), the oxygen vacancies and Ce 3+ content of GCN–6 (66.6 wt% glycerol-modified) can be remarkably enhanced to almost twice higher than that of Ce Naked. As a result, the antioxidant activity towards scavenging 2,2-diphenyl-1-picrylhydrazyl radical (DPPH), superoxide, and hydroxyl free radicals has been significantly increased for GCN–6. In addition, HaCaT cells derived from human keratinocytes were employed to assess the cytotoxic effect and biocompatibility of GCN–6, and the HaCaT cell viability is not inhibited when the concentration of GCN–6 is less than 0.625 mg/mL. Furthermore, a reactive oxygen species (ROS) generation model was established using UVB irradiation to investigate the in vitro protective effect of GCN–6 on ROS-induced cell death. GCN–6 is proven to efficiently suppress the ROS production from oxidative stress in HaCaT cells stimulated by UVB radiation at a biocompatible concentration, indicating that the glycerol-modified GCN–6 enhances HaCaT cell survival by eliminating excessive intracellular ROS, and further providing a superior photoprotection effect against harmful UV exposure. These results suggest that surface engineering of nanoceria using biocompatible glycerol can boost a high Ce 3+ ratio, thus exhibiting potential application in protecting from oxidative stress-associated skin damage, and is promising for widespread use in sunscreens as an additive UV-shielding ingredient.
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高影响因子
Chemosensors
·
2023
·Vol. 11
·期 3
·171
·
IF 4.2
Xin Meng,Bao-Lin Xiao,Xin-Yan Song,Xin-Xin Ma,Yang-Yang Li,Lin-Lin Ma,Yu-Jie Chen,Yu-Ying Li,Ke-Xin Xu,Jian-She Wei,Tao Hong,Ali Akbar Moosavi-Movahedi,Jun Hong
Rutin is a natural antioxidant flavonoid compound with anti-inflammatory, antioxidant, and antiviral effects that is used to prepare drugs with wide application in clinical treatment. Therefore, the quantitative detection of rutin has important practical significance. In this work, a novel electrochemical sensor based on glassy carbon electrodes (GCEs) modified with sodium carboxymethylcellulose (CMC), multi-walled carbon nanotubes (MWCNTs), and 1-butyl-3-methylimid (ionic liquid, IL) was developed for the super-sensitive detection of the flavonoid rutin. The properties of these modified materials were analyzed by transmission electron microscope (TEM), cyclic voltammograms (CVs), and electrochemical-impedance spectroscopy (EIS). CMC was used to disperse MWCNTs to further enhance their hydrophilicity and biocompatibility. The modified MWCNTs improved the sensitivity of rutin detection. The square-wave voltammetry (SWV) technique showed that the linear range of rutin concentration determination was 0.01 μM to 1 µM and 1 µM to 10 µM. The minimum concentration detection of rutin was 0.83 nM and 6.6 nM, respectively. The proposed sensor presented good selectivity for rutin and successfully analyzed rutin content in the pharmaceutical rutin tablets. These results are consistent with those measured by ultra-high-performance liquid chromatography (UHPLC). Therefore, this sensor has latent application value in the analysis of rutin in food and drug tablets and nutraceutical samples.Keywords:sensor;multi-walled carbon nanotubes;ionic liquid;sodium carboxymethylcellulose;rutin
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JOURNAL OF MEMBRANE SCIENCE
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2023
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IF 9.5
Hongyan Yu,Li Xu,Yunpeng Luo,Mengyao Guo,Xuefeng Yan,Xiaohui Jiang,Liangmin Yu
A novel thin film composite (TFC) nanofiltration (NF) membrane was prepared by introducing the capsaicin derivative AMTHBA into polyamide (PA) layer by bidirectional interfacial polymerization. Ultrathin, smooth and defect-free PA layers can be prepared by bidirectional interface polymerization. Meanwhile, the surface properties of NF membranes were precisely regulated by adjusting the concentration of AMTHBA in an aqueous solution. As a result, the AMTHBA-PA R /PA F /PS membrane displayed superior permeance owing to its hydrophilic and negatively charged surface. The optimized NF membrane exhibited an ultrahigh permeance of 128.95 L m −2 h −1 (almost two-fold higher permeance than that of the nanofiltration membrane prepared by traditional interfacial polymerization), together with a steady efficiency above 98.43% for rejection of Na 2 SO 4 . In addition, the AMTHBA-PA R /PA F /PS membrane exhibited excellent antifouling performance and therefore has broad application prospects in the field of water treatment.
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高影响因子
TALANTA
·
2023
·
IF 6.1
Yan Guo,Xiaojiao Zheng,Xin Wang,Zhuoting Zhang,Shu Qin,Xiaowen Wang,Xu Jing
A simple, green extraction method of dithiocarbamate (DTC) pesticides in food samples was developed using adhesive tapes and a green deep eutectic solvent (DES). A rapid and convenient determination and distinction method of DTC pesticides was established using tyrosinase inhibition assay. First, DTC pesticides were extracted by pasting and peeling off the adhesive tape, then eluted by the DES synthesized from xylitol and ethylene glycol . Second, determination of DTC pesticides was conducted by inhibiting the activity of tyrosinase which can catalyze the oxidation of catechol . Less colored products were generated in the reaction system (tyrosinase, catechol, and 4-aminoantipyrine), leading to weak absorbance. In addition, different DTC pesticides (ziram, propineb , zineb , mancozeb , thiram , metiram, and ferbam) were successfully distinguished by sensor arrays (tyrosinase, phenolic compounds , and 4-aminoantipyrine) through principal component analysis. The limit of detection was found to be 0.2 μg kg −1 , and the limit of quantification was 0.6 μg kg −1 . The recoveries ranging from 89.4% to 103.8% were obtained in vegetable, fruit, and cereal, with a relative standard deviation of less than 4.2%. The method is simple, rapid, and convenient and shows good application prospects in the determination of pesticides in a variety of food samples.
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高影响因子
CHEMISTRY & BIODIVERSITY
·
2023
·Vol. 20
·期 3
·e202200813
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IF 2.9
Kaiwen Li,Jie Wang,Zizhen Huang,Chunxia Tan
Angelica Sinensis polysaccharide cerium (ASP−Ce) was prepared by Angelica Sinensis polysaccharide (ASP) and cerium ammonium nitrate (NH 4 ) 2 Ce(NO 3 ) 6 . and its morphology, and solid structure was investigated. The antioxidant activity of the ASP−Ce complex in vitro was evaluated. The antioxidant activity of ASP−Ce complex in vitro was evaluated by the scavenging activity of 2,2-diphenyl-1-picrylhyrazyl radical (DPPH), hydroxyl radical (⋅OH) and superoxide anion radical ( ⋅). The results showed that the ASP−Ce had the more ordered structure for inserting the Ce 4+ into the polymer chain of ASP and there was little change in the conformation of the polysaccharide from Ce 4+ . Three free radical scavenging experiments proved that ASP−Ce had better antioxidant capacity than of ASP, especially on DPPH, and then on ⋅. The scavenging rate of ASP−Ce at 1.0 mg/mL on DPPH reached 71.6 %. Therefore, these results provide references for the further development and utilization of rare earth-polysaccharide.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Juanjuan Zhou,Chao Liu,Li Xia,Liang Wang,Congrui Qi,Guangyi Zhang,Zhezhe Tan,Ben Ren,Bihe Yuan
With the development of modern electronic technology, there is an urgent demand for the fabrication of multifunctional composites with electromagnetic interference (EMI) shielding and flame-retardant properties. Herein, a novel microcapsule structure is formulated by modifying the hydrophilicity of polypropylene (PP) micro-powder surface and wrapped with graphene oxide to modulate the distribution state of multi-walled carbon nanotubes (MWCNTs). The modified PP/reduced graphene oxide/MWCNTs (mPP/RGO/MWCNTs) composite with a distinctive segregated structure is obtained by hot-pressing of the microencapsulated PP micro-powder. The influence of the contents of MWCNTs and RGO on composite’s EMI shielding and flame-retardant properties are further investigated. Interestingly, the results show remarkable synergistic effect between MWCNTs and RGO, enhancing the electrical conductivity and EMI shielding property of the composites. Moreover, the segregated structure of mPP/RGO/MWCNTs composite enhances EMI shielding and flame-retardant properties compared with pure PP and mPP/MWCNTs. Therefore, this work provides new insights into the rational design of EMI shielding polymer composite with segregated structures to realize high EMI shielding performances and good flame-retardant properties.
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高影响因子
POLYMER
·
2022
·
IF 4.432
Cheng Deng,Hai Yang,Simin Liu,Zhiyong Zhao
Nanomaterials self-assembled by DNA amphiphiles have great potential application in catalysis, bioimaging and biomedicine. Here, we constructed two kinds of DNA-dendrimer amphiphiles including the G-quadruplex-dendrimer hybrid (G20-Den) and single-stranded DNA-dendrimer hybrid (D20-Den) as a control. Both of them self-assembled into nanofibers with a length of several micrometers in MES buffer, and the diameter of G20-Den nanofibers was smaller than that of D20-Den nanofibers due to the compact stacking of G-quadruplex formed in G20-Den hybrids. At the same time, the catalytic properties of G20-Den nanofiber/hemin, as horseradish peroxidase-mimicking DNAzymes, were investigated. Our results showed that G20-Den nanofiber/hemin, as well as the single-stranded G20/hemin system, exhibited higher catalytic peroxidation activity than D20-Den nanofiber/hemin. Furthermore, through simple ultrafiltration, the recycle of these nanofibers can be simply achieved. This research has provided a new solution for the construction of functional DNA nanomaterials.
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高影响因子
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