Foods
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2022
·Vol. 11
·期 24
·4073
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IF 5.561
Yingrui Ji,Dongming Lan,Weifei Wang,Kok Ming Goh,Chin Ping Tan,Yonghua Wang
With the prevalence of edible diacylglycerol (DAG) oil, which is beneficial to human, the generation of 3-monochloropropanediol esters (3-MCPDE) and glycidyl esters (GE) as well as the stability of physical properties during heat-induced processing still need to be explored. In this study, the experiment used olive-based edible oil with different contents of DAG (40, 60, and 80%) to make crackers and fry chicken. They were heated at 160 and 180 °C to determine the changes in 3-MCPDE and GE, the crackers’ hardness and gumminess, and the physical properties of the oil. During baking and frying, 3-MCPDE decreased, while the content of GE slightly increased with the prolonged heating duration. Finally, 3-MCPDE and GE were lower than 1.25 mg/kg and 1.00 mg/kg, respectively. The AV increased proportionally as duration increased and POV was below 0.30 g/100 g. In general, the changes in 3-MCPDE and GE were related to the heating temperature and duration, and not significantly (p> 0.05) related to the content of DAG.Keywords:3-MCPD ester;glycidyl ester;diacylglycerol;crackers;frying oil
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JOURNAL OF CHEMICAL THERMODYNAMICS
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2023
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IF 2.6
Mingcheng Li,Xiaojie Liu,Chunying Zhu,Taotao Fu,Xiqun Gao,Youguang Ma
Densities and viscosities were measured for binary solutions MEA (monoethanolamine) + 3DMA1P (3-dimethylamino-1-propanol), 3DMA1P + H 2 O and ternary solutions MEA + 3DMA1P + H 2 O at P = 0.101 MPa, T = 293.15 K ∼ 333.15 K. Based on the experimental densities of solutions, the volume properties of the excess molar volume, partial molar volume, apparent molar volume and limiting partial molar volume were calculated. Moreover, the viscosity deviation and viscous flow activation energy were calculated based on the experimental viscosity. Additionally, the intermolecular interactions of the mixed solutions were analyzed and discussed, and the Redlich-Kister equation was used to correlate the excess molar volume and viscosity deviation of the binary solutions.
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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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INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
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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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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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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SOLAR ENERGY
·
2022
·
IF 7.188
Guangcheng Wu,Xuting Dong,Guanglei Cui,Rui Sun,Xianhu Wu,Min Gu,Zewen Zuo,Yong Liu
Poly(3-hexylthiophene) (P3HT) based devices possess potential toward low-cost and easy fabrication for high-performance perovskite solar cells (PSCs). However, these devices currently suffer from stability and relative low performance. Herein, a gradient mixed-cation perovskite is obtained by a facile strategy of tailoring MAPbI 3-x Cl x , in which MAFAPbI 3-x Cl x were constructed in ambient air by directly spin-coating FAI onto perovskite intermediate phase. The pristine device shows an inferior power conversion efficiency (PCE) of 13.71%, whereas the as-optimized device achieves a PCE of 16.26%. A gradient distribution of FA cation is revealed by crystal unit parameters and energy dispersive spectrometer (EDS). The lifted valence band edge matches better with the HOMO of P3HT, thus resulting in the faster charge extraction. In addition, the reduced trap states lead to the enhanced crystallinity and the mitigation of perovskite/P3HT interface, and then the stability is significantly enhanced. Our work provides a facile way to improve the performance of P3HT based air-processed PSCs, which can bring these devices closer to low-cost commercial applications.
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OPTICS EXPRESS
·
2022
·Vol. 30
·期 8
·12409-12419
·
IF 3.833
Le Zheng,Chen Wei,Hongrong Zhou,Fanxi Sun,Ang Gao,Dongsheng Wang,Dongsheng Wang,Yong Liu
Pulsed lasers operating in the mid-infrared are of great importance for numerous applications in spectroscopy, medical surgery, laser processing, and communications. In spite of recent advances with mid-infrared gain platforms, the lack of a capable pulse generation mechanism hinders the development of compact mid-infrared pulsed laser source. Here we show that MIL-68(Al) and MIL-68(Fe), which are aluminum- and iron- based metal-organic frameworks (MOFs) with ordered atoms distribution and periodic mesoporous structure, constitute exceptional optical switches for the mid-infrared. We fabricated the MIL-68(Al) and MIL-68(Fe) via hydrothermal method and prepared reflection-type MIL-68(Al)- and MIL-68(Fe)- saturable absorber mirrors (SAMs). By employing the as-prepared SAMs in the laser cavities, we achieved high-power nanosecond Q-switched fiber lasers at 2.8 µm. Especially, the average output power and pulse duration of the MIL-68(Al) Q-switched fiber laser reached 809.1 mW and 567 ns, respectively. To the best of our knowledge, this is the first time to demonstrate that MIL-68(M) can be efficient optical switches for 3-µm mid-IR laser pulses generation. Our findings reveal that MIL-68(M) is promising saturable absorber for compact and high-performance mid-infrared pulsed lasers.
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JOURNAL OF FOOD SCIENCE
·
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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Reaction Chemistry & Engineering
·
2022
·Vol. 7
·期 8
·1742-1749
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IF 5.2
Chaoqiang Wu,Chengyong Wang,Alei Zhang,Kequan Chen,Fei Cao,Pingkai Ouyang
3-Acetamido-5-acetylfuran (3A5AF) is an important platform compound, possessing very promising application prospects. Herein, we propose a new approach to convert N-acetylglucosamine (NAG) and chitin to 3A5AF using biobased deep eutectic solvents (DESs) containing choline chloride and various organic acids or polyols. A comparison of catalytic capacity showed that a DES made with choline chloride/citric acid (CCCA) possesses the optimum catalytic properties, which lead to a maximum yield for 3A5AF of 47.1 mol% and 5.0 mol% from NAG and chitin, respectively, at 210 °C in N,N-dimethylacetamide solvent with CaCl2·2H2O as an additive. Moreover, CCCA showed excellent recyclability and retained over 63.6% of its original activity after five cycles of use. In addition, the 3A5AF product was obtained with 99.0% purity by simple extraction and crystallization. This research provided a new avenue for 3A5AF production from renewable chitin resources.
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CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Xingyu Chen,Yeqing Guan,Zhaolin Zhong,Fenglin Wang,Wei Li,Haijun Mao,Zhuofeng Liu,Weijun Zhang
The effect of Zr 4+ substitution for Ti 4+ on the phase evolution and microwave dielectric properties of (Cu 1/3 Nb 2/3 ) 0.25 Ti 0.75- x Zr x O 2 (0 = x ≤ 0.35) ceramics prepared via conventional solid-state method has been investigated. With the increase of Zr substitution, the ceramics exhibit a gradual phase transition from a tetragonal rutile phase to an orthorhombic srilankite phase, where the synthesis of the srilankite phase at atmospheric pressure and temperature below 1200 °C in this study is reported for the first time. The crystal structure is tetragonal rutile type for the unsubstituted composition, orthorhombic srilankite type for the compositions with x > 0.30, and the compositions in between is a two-phase region with a mixture of rutile and srilankite. The Zr substitution has a great influence on the microstructure of the ceramics. In particular, for compositions where x > 0.1, the grain boundaries are surrounded by elongated powdery particles. The microwave dielectric properties of the ceramics are closely related to the phase transition process, in which Q × f is significantly improved and τ f decreases almost linearly with the increase of the content of srilankite phase. Optimum microwave dielectric properties with a permittivity of 35.1, a Q × f value of 7270 GHz, and a near-zero τ f of 9.0 ppm/°C are obtained in the ceramics with x = 0.3 sintered at 1150 °C for 4 h, which provides a new option for microwave devices requiring medium-permittivity dielectric ceramics .
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