JOURNAL OF FOOD SCIENCE
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2022
·Vol. 87
·期 5
·2159-2172
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IF 3.693
Zhenzhu Zhu,Lipin Yang,Zhong Li,Qin Liu
Neurotoxicity seriously affects the normal function of the nervous system. Cyanidin-3-O-glucoside (C3G) is the most abundant anthocyanin widely distributed in plants. Using β -amyloid (A β ) transgenic Caenorhabditis elegans and cell models, the neuroprotective effect of C3G was examined. The results showed that C3G remarkably suppressed A β aggregation, enhanced antioxidant capacity, improved the sensitive capacity towards chemical compounds, and boosted the memory ability of C. elegans . There was no significant difference between preventive and long-term treatment groups at the same dosage of C3G. Given the rapid metabolism and oxidation of C3G in vivo, the antioxidative and anti-inflammatory activities of C3G, the metabolite cyanidin (Cy), oxidation products of Cy (OP), as well as protocatechuic acid (PCA) at the corresponding level in OP were compared by using lipopolysaccharide (LPS)-stimulated BV2 microglia cell model. The results indicated that C3G, Cy, and OP could prevent BV2 cells against LPS-induced inflammation and oxidative damage. There was no significant difference on antioxidative and anti-inflammatory activities among C3G, Cy, and OP at the same level. Notably, PCA at the corresponding concentration in OP exhibited limited antioxidative and anti-inflammatory activities. The results suggested that C3G could exert neuroprotective function through the metabolite Cy and its oxidation products by inhibiting inflammation and oxidative damage, and PCA was not the primary bioactive species in OP. Practical Application This study confirmed the neuroprotection of cyanidin-3-O-glucoside (C3G) in transgenic Caenorhabditis elegans . C3G, its metabolite cyanidin (Cy), and oxidation products of Cy (OP) alleviated both neuroinflammation and oxidative damage. It highlighted that C3G-rich foods could exert neuroprotective potential through their oxidation products, the constitution, and existence of OP in vivo need further study.
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FOOD CONTROL
·
2022
·
IF 6.652
Jie-Qiong Wang,Yan-Qing Fu,Daniel Granato,Peigen Yu,Jun-Feng Yin,Liang Zeng,Yong-Quan Xu
The effects of pH (2.2–8.0) and temperature (25–100 °C) on the instrumental color of a model beverage containing (−)-epigallocatechin-3-gallate (EGCG) were investigated. As the pH and temperature increased, the lightness ( L *) decreased while the redness and yellowness ( a* and b* , respectively) increased. Using spectral scanning, it was possible to verify that color changes might be related to the structural rearrangement of the EGCG aqueous solution in the system under alkaline and heating conditions. There were 6 key substances identified in the EGCG solutions, among which (2R)-2-Hydroxy-3-(2,4,6-trihydroxyphenyl)-1-(3,4,5-trihydroxyphenyl)-1-propanone 2- O -gallate ( m/z 473.0720) and theacitrin C/dehydrotheasinensin AQ ( m/z 911.1340) were identified as key coloring substances. Color changes did not decrease antioxidant activity of the beverage model. These results provide new insights on the mechanism of color change during storage of green tea beverages, and enable the understanding of key contributors to the browning of infusions color in tea beverages for the first time.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2022
·
IF 4.52
Alberta Osei Barimah,Ping Chen,Limei Yin,Hesham R. El-Seedi,Xiaobo Zou,Zhiming Guo
Detrimental health effects caused by the intake of food contaminated with heavy metals have drawn concerns on effective monitoring using rapid and benign methods. This work presented a novel surface-enhanced Raman scattering (SERS)-based 3-Aminobenzeneboronic acid (ABBA) labeled silver (Ag) nanosensor combined with chemometric algorithms to detect and predict total arsenic (TAs) in acid digested spiked black tea leaves. The sensor recognizes TAs through the partial detachment of ABBA and the chemical formation of As-O-Ag linkage between the TAs and the Ag nanoparticles , which caused a SERS-on signal enhancement effect. SERS combined with competitive adaptive reweighted sampling partial least squares algorithm predicted the TAs with higher correlation coefficient (R p ) results (R p = 0.9750) and a detection limit of 0.0273 µg/g. Good recoveries of 83.84–109.53% and the excellent agreement with the inductively coupled plasma-mass spectrometry method (R 2 = 0.999) revealed this developed rapid method could be deployed for fast-tracking of As in food samples.
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Frontiers in Materials
·
2022
·
IF 3.985
Guo Xin,Wang Jinke,Huang Luyao,Wang Yajie,Ma Li,Zhang Dawei,Ma Lingwei
The corrosion inhibition effect of 3-amino-5-mercapto-1,2,4-triazole (AMT) on AA2024 aluminium alloy in 3.5 wt.% NaCl solution was investigated, and the corrosion inhibition mechanism was revealed. The influence of AMT concentration on the corrosion inhibition performance was evaluated by potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS). Surface analysis and surface-enhanced Raman scattering (SERS) spectra were used to study the adsorption process and corrosion inhibition mechanism of AMT on the alloy surface. Polarization curve and EIS results showed that when the AMT concentration was 1.5 g/L, the corrosion current density (icorr) was the lowest and the resistance of adsorption film (Rf) was the largest, illustrating the highest corrosion inhibition efficiency. Moreover, the adsorption kinetics process of AMT was revealed by SERS measurement, and a positive correlation between the SERS intensity and Rf values of AMT after different immersion time was achieved. It indicated that the efficient adsorption of corrosion inhibitors significantly enhanced the corrosion inhibition performance. Density functional theory (DFT) and molecular dynamics simulations were used to give further insight into the adsorption and inhibition mechanism of AMT on the aluminium alloy surface.
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JOURNAL OF BIOMATERIALS APPLICATIONS
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2022
·
IF 2.712
Zao Cheng,Junfei Gao,Qianqian Liu,Qun Gu
This work describes the relationship between the antibacterial activity and the ester chain length (C1-C8) of (R)-3-Hydroxybutyric ((R)-3-HB) alkyl esters that synthesized from (R)-3-HB acid ((R)-3-HBA) by esterification reaction. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) decrease as the length of the (R)-3-HB alkyl ester chain increases from 1 to 6, but (R)-3-HB-C7 and (R)-3-HB-C8 have their own rules for different microorganisms. Among them, the (R)-3HB-C6 has the relatively best antibacterial and antifungal properties, which MIC were 1.95 mg mL−1 against E. coli and S. aureus; 0.98 mg mL−1 against C. albicans and B. subtilis; 0.49 mg mL−1 against A. niger. Finally, the antimicrobial mechanisms of the (R)-3HB-C6 are revealed, and these include disruption of biofilm and the bacterial wall/membrane, leakage of the intracellular content, and change in the transmembrane potential. These results imply the potential application of (R)-3-HB alkyl ester as new antimicrobial agents; future research can use this as an antibacterial element to synthesize new polymer materials or agents with high-efficiency antibacterial activity.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
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IF 6.364
Linjing Liu,Bin Yang,Shuai Yang,Qiangwei Kou,Hang Xie,Yuan Sun,Yunfei Chang,Shan-Tao Zhang,Fei Li
Grain-oriented Pb(Mg 1/3 Nb 2/3 )O 3 -PbZrO 3 -PbTiO 3 (PMN-PZ-PT) based ceramics were synthesized through templated grain growth via using BaTiO 3 (BT) templates. Although BT templates are partially destroyed by PMN-PZ-PT matrix, CuO addition remarkably promotes [001] c -oriented grain growth behavior of the ceramics, resulting in an improvement of Lotgering factor F 001 from ~86% to 98%. Both crystallographic texture and CuO doping increase tetragonality and reduce average domain size of the ceramics dominated by rhombohedral phase. Consequently, 0.50 wt% CuO-doped ceramics ( F 001 ~98%) exhibit optimum electromechanical properties: d 33 ~860 pC/N, d 33 × g 33 ~48.6 × 10 −12 m 2 /N, k p ~0.80, E c ~7.2 kV/cm, tan δ ~0.8% and T c ~222 °C. In addition to ~3.7 times and 6.6 times higher d 33 and d 33 × g 33 , those ceramics possess about 240% enhanced piezoelectric strain and much better thermal stability ( S max / E max variation ≤2% between RT and 150 °C) relative to non-textured counterpart. This work offers a good paradigm for simultaneously exploring high piezoelectric response and good temperature stability in piezoceramics, benefiting the development of next-generation advanced electromechanical devices.
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INDUSTRIAL CROPS AND PRODUCTS
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2022
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IF 6.449
Yixin Sun,Peishan Li,Qi Sun,Xin Liu,Yanping Wang,Bixian Zhang,Shijia Dong,Xiaomei Hu
Ionic liquids (ILs)-assisted microbes and enzymes are potential approaches for converting lignocellulosic biomass into fermentable sugars in a biorefinery. In the present study, an ILs-tolerant strain Aspergillus terreus NEAU-7 with ILs-stable cellulase production ability was isolated and identified. A comparative transcriptome analysis revealed that A. terreus NEAU-7 could promote ion transport and acquire metabolic energy to reduce the adverse effect of ILs. The results further confirmed that the strain could increase the accumulation of compatible solutes to offset the osmotic pressure of ILs and reduce the cell membrane permeability to prevent ILs. A secretome analysis of Carbohydrate-Active Enzymes (CAZymes) showed no significant reduction in the Glycoside Hydrolases (GH) families of cellulolytic enzymes, while a significant reduction was observed for Carbohydrate Esterases (CE) families and Glycoside Hydrolase 43 (encoding α- L -arabinofuranosidases and β-xylosidases), indicating that the presence of ILs could decrease the expression of hemicellulolytic enzymes. Herein, a model for lignocellulose degradation of A. terreus NEAU-7 was interpreted. Overall, this study will provide insights into further exploration of the ILs-resistance mechanism of lignocellulolytic fungi and employment of ILs-assisted fungi in the degradation of lignocellulosic biomass into value-added products.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
·
IF 8.025
Debin Jiang,Xiaoping Wang,Li Feng,Yichang Yu,Jie Hu,Xiaoying Liu,Hong Wu
In this study, a novel nano-La(OH) 3 /porous carbon composites derived from La alginate xerogel with egg-box structure had been successfully synthesized by a gradient heat treatment in nitrogen atmosphere. This facile fabrication strategy can be easily employed to considerably encapsulate La(OH) 3 nanoparticles uniformly into the porous carbon matrix derived from the alginate macromolecule framework. The optimized sample, labeled as LS-550(N), exhibited extremely high phosphate uptake and great selectivity. The adsorption kinetic process dramatically followed pseudo-second-order model. The Langmuir model fitted maximum equilibrium adsorption capacity is 133.58 mg·g −1 . The phosphate adsorption mechanisms could be consist of electrostatic interaction, complexation and ligand exchange interaction on the surface of LS-550(N). The prominent practical applicability of LS-550(N) in the regeneration test suggests that the LS-550(N) could be a potential adsorption candidate for the decontamination of phosphate-containing natural water bodies.
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NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 26
·12296-12303
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IF 3.3
Wen-Hui Zhang,Zi-Yue Chen,Ren-Ming Liu,Xiong-Wei Liu,Bo-Wen Pan,Jian Zhou,Ying Zhou,You-Ping Tian,Xiong-Li Liu
Herein, previously unreported trimethylindolenines serving as useful C–N synthons in [3+2] cycloaddition reactions of donor–acceptor 3-isothiocyanato oxindoles to build a library of spiro[oxindole-thioxoimidazolidine-indoline] hybrids are described. A wide range of intriguing and complex products bearing three pharmacophores and three adjacent quaternary stereocentres were smoothly afforded in up to 92% yield, >20 : 1 dr, under catalyst-free conditions. Moreover, this strategy further expands the skeletal diversity of polyheterocycles, which will aid the search for new bioactive molecules.
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JOURNAL OF SOLID STATE CHEMISTRY
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2021
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IF 3.498
Ping-Ping Sun,Yu-Hang Zhang,Hongwei Shi,Fa-Nian Shi
A new 3-D Co-MOF with the molecular formula of C 10 H 8 Co 3 N 4 O 12 was prepared by hydrothermal method . As the anode for lithium ion battery , the electrode modified with 20% copper powder (Co-MOF-20) shows the specific capacity of 1138.5 mAh g −1 at 100 mA g −1 . Even under the high current test of 500 mA g −1 , Co-MOF-20 also shown excellent performance (349.6 mAh g −1 ) after 300 cycles. The advantages of Co-MOF-20 electrode are not only due to the introduction of copper powder conductive agent, but also the existence of three-dimensional structure which can provide ion transport channels.
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FOOD HYDROCOLLOIDS
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2021
·
IF 9.147
Xin Yin,Huanhuan Dong,Hao Cheng,Chuye Ji,Li Liang
In oil-in-water emulsions, a single phenolic compound has been used as interfacial antioxidant. The co-encapsulated polyphenols may produce more supper stability or bioactivity than a single encapsulated one. This study used epigallocatechin-3-gallate (EGCG) and resveratrol as model polyphenols with different solubility. Their co-encapsulation in SC particles was analyzed on the basis of particle characterization, loading efficiency, antioxidant activity , polyphenolic microenvironment and retention. When the polyphenols’ concentration was 0.4 mM, 98% EGCG and 68% resveratrol were co-encapsulated in sodium caseinate (SC) particles. The SC particles containing dual polyphenols were then used to stabilize fish oil emulsions, which were analyzed in term of particle characterization, oil oxidation , polyphenolic partition and retention. When the content of fish oil was 10%, there were 77% resveratrol in the emulsified oil droplets and 87% EGCG at the oil-water interface. The co-encapsulated EGCG improved the stability of resveratrol in SC particles and protected fish oil emulsions against oxidation prior to resveratrol. These results are instructive for the combination of multiple bioactive compounds for the applications in foods and pharmaceuticals.
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ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Yue Pan,Shan Xu,Zhouping Wang,Caiyun Jiang,Xiaoyuan Ma
Background Histamine is a kind of biogenic amine with strong toxicity and potential carcinogenicity . Many traditional methods of detecting histamine have the disadvantages of cumbersome detection steps, expensive equipment, and high professional requirements for staff. In contrast, SERS has become the preferred method for quantitative analysis of histamine because of rich fingerprint information, rapidity and economy. However, most of SERS substrates still have technical problems, such as poor stability, low sample collection rate, and detection efficiency. Therefore, there is a great need for new strategies to develop high-performance SERS substrates based sensors. Results In our study, a sensitive SERS aptasensor for the detection of histamine was synthesized. The assembly was formed between IRMOF-3@Au/PDMS (flexible SERS substrate) and AuNR-DTNB@Ag-HA apt (Raman signal probe with both the target capture ability) via π-π stacking interaction from HA aptamer and IRMOF-3. Consequently, the SERS signal of the assembly derived from DTNB reached highest due to the synergistic enhancement effect by AuNR@Ag and IRMOF-3@Au. Meanwhile, HA aptamer can specifically capture histamine, therefore histamine addition competitively bound to the probe, leading to a corresponding decrease in the DTNB signal value on the SERS substrate. The SERS intensity at 1331 cm −1 presented a good linear relationship towards the logarithmic value of histamine concentrations ranging from 0.0001 mg/L to 400 mg/L (R 2 = 0.990) with the LOD of 3.6 × 10 −5 mg/L. Furthermore, the application in wine samples demonstrated the accuracy and applicability of the developed sensor. Significance This method effectively improves substrate stability, detection sensitivity and signal response immediacy to amplify the SERS sensor, thus satisfying the histamine detection requirements of various systems. According to this aptasensor design, our strategy can be extended to create other MOF-based SERS substrates for accurately detecting relative targets to ensure food safety.
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