作者机构：
[Fengjiao Quan; Pengfei Xu; Xiaolan Chen; Wenjuan Shen; Yun He; Jianfen Li] College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China;[Falong Jia] College of Chemistry, Central China Normal University, Wuhan 430079, China;[Guangming Zhan] School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
通讯机构：
[Falong Jia] C;College of Chemistry, Central China Normal University, Wuhan 430079, China
摘要：
Nitrate (NO3–) is a widespread pollutant in high-salt wastewater and causes serious harm to human health. Although electrochemical removal of nitrate has been demonstrated to be a promising treatment method, the development of low-cost electro-catalysts is still challenging. In this work, a phosphate modified iron (P-Fe) cathode was prepared for electrochemical removal of nitrate in high-salt wastewater. The phosphate modification greatly improved the activity of iron, and the removal rate of nitrate on P-Fe was three times higher than that on Fe electrode. Further experiments and density functional theory (DFT) calculations demonstrated that the modification of phosphoric acid improved the stability and the activity of the zero-valent iron electrode effectively for NO3– removal. The nitrate was firstly electrochemically reduced to ammonium, and then reacted with the anodic generated hypochlorite to N2. In this study, a strategy was developed to improve the activity and stability of metal electrode for NO3– removal, which opened up a new field for the efficient reduction of NO3– removal by metal electrode materials.
期刊：
Journal of the Science of Food and Agriculture,2024年104(6) ISSN：0022-5142
通讯作者：
Du, Jing;Zhang, WN
作者机构：
[Zhang, Wei-nong; He, Jun-bo; Du, Jing; Zhang, Hai-long] Wuhan Polytech Univ, Key Lab Deep Proc Major Grain & Oil, Minist Educ, Wuhan, Peoples R China.;[Du, Jing; Zhang, Wei-nong; Zhang, WN] Wuhan Polytech Univ, Key Lab Deep Proc Major Grain & Oil, Minist Educ, Wuhan 430023, Peoples R China.;[Zhang, Wei-nong; He, Jun-bo; Du, Jing; Zhang, Hai-long] Wuhan Polytech Univ, Hubei Key Lab Proc & Transformat Agr Prod, Wuhan, Peoples R China.;[Zhang, Wei-nong; He, Jun-bo; Wang, Kun-li; Du, Jing; Zhang, Hai-long; Wang, Zhi-xian] Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan, Peoples R China.;[Zhang, Wei-nong; He, Jun-bo; Zhang, WN; Zhang, Hai-long] Engn Res Ctr Lipid Based Fine Chem Hubei Prov, Wuhan, Peoples R China.
通讯机构：
[Du, J; Zhang, WN ] W;Wuhan Polytech Univ, Key Lab Deep Proc Major Grain & Oil, Minist Educ, Wuhan 430023, Peoples R China.;Engn Res Ctr Lipid Based Fine Chem Hubei Prov, Wuhan, Peoples R China.
关键词：
French fries;oil absorbency;rice bran oil;γ-oryzanol
摘要：
BACKGROUND: The aim of this research was to evaluate the possibility of lipid concomitant gamma-oryzanol reducing oil absorbency of fried foods and the underlying mechanism. Therefore, the influence of gamma-oryzanol on moisture and oil content, and distribution and micromorphology of French fries and the viscosity, fatty acid composition and total polar compounds content of rice bran oil (RBO) after frying were studied.RESULTS: Our results showed that the incorporation of low concentration of gamma-oryzanol [low addition group (LAG)] (5.754 g/kg) decreased the oil absorbency and porous structure of French fries during frying. Additionally, LAG incorporation inhibited the degradation of linoleic acid, decreased the growth rate of saturated fatty acids, total polar compounds and viscosity of frying oil.CONCLUSIONS: Consequently, it was recommended to incorporate a small amount of gamma-oryzanol in frying oil because it could inhibit oil absorption behavior of French fries. (c) 2023 Society of Chemical Industry.
作者机构：
[He, Dongping; Gao, Pan; Liu, Ying; Gao, P; Yin, Jiaojiao; Zhong, Wu; Huang, Chuanyang; Hu, Chuanrong] Wuhan Polytech Univ, Coll Food Sci & Engn, Key Lab Edible Oil Qual & Safety State Market Regu, Key Lab Deep Proc Major Grain & Oil,Minist Educ Ch, Wuhan, Peoples R China.;[Wang, Shu] Wuhan Inst Food & Cosmet Control, Key Lab Edible Oil Qual & Safety State Market Reg, Wuhan, Peoples R China.;[Wang, Xingguo] Jiangnan Univ, Sch Food Sci & Technol, Int Joint Res Lab Lipid Nutr & Safety, Wuxi, Peoples R China.
通讯机构：
[Gao, P ] W;Wuhan Polytech Univ, Coll Food Sci & Engn, Key Lab Edible Oil Qual & Safety State Market Regu, Key Lab Deep Proc Major Grain & Oil,Minist Educ Ch, Wuhan, Peoples R China.
关键词：
Iron walnut oil;Oleogels;Fatty acid composition
摘要：
In this study, we compared the quality of iron walnut oil (IWO) oleogels prepared with different oleogelators, including gamma-oryzanol/beta-sitosterol (OZ-PS), gamma-oryzanol/triglyceride (OZ-TC), monoglycerides (MGS), beeswax (BW), beeswax-monoglycerides (BW-MGS), and carnauba wax (CW). The physicochemical and component properties, rheological and textural parameters, macroscopic morphologies, and antioxidant capacities of the resulting oleogels were analyzed. In addition, their microscopic properties were analyzed using Fouriertransform infrared (FTIR), X-ray powder diffraction (XRD) spectroscopy, and polarized light microscopy (PLM). The results showed that the gel structures produced by different oleogelators did not change the fatty acid composition of IWO. In addition, the IWO oleogel prepared with OZ-PS had a more stable network structure, excellent hardness at 4celcius (1116.51 g), better antioxidant capacity (766.50 mu mol TE/kg) and higher total phenolic content (14.98 mg/kg) than any other experimental IWO oleogels. Moreover, comprehensive ranking by principal component analysis of numerous characteristics showed that the OZ-PS oleogel (2.533) ranked first among the six oleogels studied. Therefore, the IWO oleogel prepared with OZ-PS is a promising product, and our results provide guidance for the preparation of IWO oleogels, such as to increase their applications in the food industry.
摘要：
Anthocyanin extracts from purple tomato (PTA) were incorporated with polyvinyl alcohol (PVA), resulting in a series of colorimetric PVA/PTA films with PTA concentrations of 0%, 1%, 3%, and 5% (based on PVA). The role of anthocyanin on color response, Fourier-transform infrared (FTIR), thickness, water content, mechanical properties, antioxidant activity, and water vapor permeability (WVP) through the films was examined. In addition, its application in smart packaging to assess the freshness of shrimp was studied. It was found that the tensile strength, contact angle and WVP of PVA/PTA films increases with the addition of more PTA, while the elongation at break and water content decreased. FTIR analysis showed that there are interactions between PTA and the PVA matrix. The addition of anthocyanins caused significant improvement in the antioxidant properties of PVA films. Furthermore, the total volatile alkaline nitrogen (TVB-N), total plate count (TPC), and pH value of shrimp were monitored after 4 days of refrigeration, and the color change of the indexes was recorded. The PVA/PTA films changed color from purple to yellow-green during the storage time of 0-4 days for shrimp. This suggests that the film could be used in smart packaging as a real-time freshness indicator for shrimp.
摘要：
The recovery of Au(III) has become a focal point of interest due to its significance in resource utilization and addressing environmental contamination. In this study, [C(3)NH(2)Mim]Cl-CMPS and PPh3-CMPS were successfully developed by immobilizing [C(3)NH(2)Mim]Cl and triphenylphosphine (PPh3) onto chloromethylated polystyrene beads (CMPS). The adsorbents demonstrated consistently high adsorption efficiency (>95 %) at a wide pH range. The [C(3)NH(2)Mim]Cl-CMPS and PPh3-CMPS exhibited exceptional selective adsorption ability for Au(III), and the adsorption process adhered to the PSO and Langmuir model. The adsorption efficiency of Au(III) remained constant after five consecutive cycles, highlighting outstanding reusability performance. Furthermore, as the existence of multiple coexisting metal ions, [C(3)NH(2)Mim]Cl-CMPS and PPh3-CMPS could efficiently and selectively capture Au(III) from the gold slag and PCBs lixivium, which is promising for Au recovery in practice.
作者机构：
[Jingcheng Dai; Jiangke Yang] School of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430023, China;[Dingxin Wen; Yong Yang] State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan, 430062, China;[Hao Li; Jingpeng Yang; Xiongfei Rao] Tobacco Research Institute of Hubei Province, Wuhan , Hubei, 430030, China;[Jiangke Yang] Pilot Base of Food Microbial Resources Utilization of Hubei Province, College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, 430024, China;[Chunlei Yang] Tobacco Research Institute of Hubei Province, Wuhan , Hubei, 430030, China. ycl193737@163.com
通讯机构：
[Chunlei Yang; Jun Yu] T;Tobacco Research Institute of Hubei Province, Wuhan
, Hubei, China<&wdkj&>Tobacco Research Institute of Hubei Province, Wuhan
, Hubei, China
摘要：
BACKGROUND: Hydrogen sulfide (H(2)S) is a novel signaling molecule involved in the growth and development of plants and their response to stress. However, the involvement of H(2)S in promoting the growth and development of tobacco plants is still unclear. RESULTS: In this study, we explored the effect of pre-soaking or irrigating the roots of tobacco plants with 0.0, 2.0, 4.0, 6.0, and 8.0mM of sodium hydrosulfide (NaHS) on endogenous H(2)S production, antioxidant enzymatic and cysteine desulfhydrase activities, seed germination, agronomic traits, photosynthetic pigments contents, and root vigor. The results revealed that exogenous NaHS treatment could significantly promote endogenous H(2)S production by inducing gene expression of D/L-CD and the activities of D/L-CD enzymes. Additionally, a significant increase in the agronomic traits and the contents of photosynthetic pigments, and no significant difference in carotenoid content among tobacco plants treated with 0.0 to 8.0mM of NaHS was observed. Additionally, a significant increase in the germination speed, dry weight, and vigor of tobacco seeds, whereas no significant effect on the percentage of seed germination was observed on NaHS treatment. Furthermore, NaHS treatment could significantly increase the activity of superoxide dismutase (SOD) and peroxidase (POD) enzymes, which reduces damage due to oxidative stress by maintaining reactive oxygen species homeostasis. CONCLUSIONS: These results would aid in enhancing our understanding of the involvement of H(2)S, a novel signaling molecule to promote the growth and development of tobacco plants.
摘要：
adipate terephthalate (PBAT) as matrix and zinc oxide nanoparticles (ZnONPs) and silver nanoparticles (AgNPs) as antibacterial agents, a series of antibacterial PLA/PBAT films were prepared by melt blending. The weight ratio of PLA, PBAT and nanoparticles in composite films was 70:900:10 (lower loading) or 70:900:20 (higher loading). The results showed that comparing with the PLA/PBAT films, the hydrophilicity, oxygen barrier properties, mechanical performance and antibacterial activities of PLA/PBAT/nanoparticles films were significantly improved (P < 0.05), and influenced by the content and type of nanoparticles. After the addition of nanoparticles, the maximum change of films performance was from 71.3 degrees to 35.8 degrees for water contact angle, from 7.4 x 10(-14) cm(3) cm.cm(-2). s(-1). Pa-1 to 5.5 x 10(-14) cm(3) cm.cm(-2). s(-1). Pa-1 for oxygen transmission permeability, from 26.4 MPa to 31.4 MPa for tensile strength, and from 0% to 57.8% (Escherichia coli) or 58.6% (Staphylococcus aureus) for antibacterial ratio. The films with higher loading content of nanoparticles showed a better antibacterial activity. For the same nanoparticles content, the antibacterial activity of PLA/PBAT/AgNPs was better than PLA/PBAT/ZnONPs. The overall migration in food simulants involving acetic acid (3%) ethanol (10% and 95%) was below 10 mg/dm(2) for most films, however, the overall migration for the films with higher content of AgNPs exceeded the limit value. The fresh noodles packaged by PLA/PBAT/AgNPs films showed the significant lowest total viable count with 4.6 lg (CFU/g) and the best appearance color characterized by L* (lightness), a*(red-green) and b*(yellow-blue) at storage time of 7 d in contrast with PLA/PBAT and PLA/PBAT/ZnONPs films, indicating the potential application of prepared films in active packaging to prolong the shelf life of food.
通讯机构：
[Shen, SN ; Li, H ; Li, H] W;Wuhan Univ, Sch Power & Mech Engn, Wuhan 430072, Peoples R China.;Wuhan Polytech Univ, Sch Mech Engn, Wuhan 430048, Peoples R China.
关键词：
Laser powder bed fusion;Laser ultrasonic detection;Surface roughness;Internal holes;Longitudinal wave
摘要：
In view of the non-destructive and non-contact features, laser ultrasonic (LU) technology has long been the effective method to detect tiny defects for laser powder bed fusion (LPBF) additive manufactured specimens. Of larger concern is the variation and the corresponding mechanism on tested results of LU detection as the property of LPBF additive manufactured specimen is changed. Aiming at the property of surface roughness, this work investigated the propagation characteristics of excited ultrasonic waves in LPBF additive manufactured 316L stainless steel with different surface roughness, as well as the interaction between ultrasonic waves and artificial submillimeter holes. Both numerical simulated and experimental study were conducted. Simulated results revealed that the amplitudes of longitudinal wave (L wave) and its echo wave L1 at the holes exhibited a discernible increase as the surface was coarser. The increase in surface roughness was detrimental to the resolution of defect detection as was expected from the increased amount of noise. LPBF fabrication and the subsequent LU pulse-echo detection were conducted for 316L stainless steel. Both B-scan and C-scan were able to detect the holes with the diameter of 0.6 mm. The speckle phenomenon deriving from the increase in surface roughness emerged, corresponding to the increased ultrasonic signal energy but deteriorated resolution of detected images. It is feasible to optimize LU detected effect by minimize the surface roughness of tested specimens.
摘要：
Designing efficient nanozyme to construct rapid analytical method for tannic acid (TA) content control has significant influence in food science area. Herein, by one-step self-assembly between Fe3+ and 2, 3, 6, 7, 10, 11-hexahydroxytriphenylene (HHTP), an amorphous nanomaterial (Fe-HHTP) was synthesized and fully characterized by TEM, AFM, XRD, EDS element mapping and XPS. Then, its peroxidase-like activity was explored by using H2O2 and 3, 3′, 5, 5′- tetramethylbenzidine (TMB) as typical substrates. Due to the inhibition of TA on Fe-HHTP catalyzed chromogenic reaction, a rapid and accurate colorimetric method for TA detection was constructed. After thorough verification, the method featured with merits of low limit of quantitation (0.50 μmol/L), good linear range (0.5–100.0 μmol/L) and high accuracy (recovery rate of 95.85–98.06%). From mechanism study, the inhibition of TA on chromogenic reaction might be resulted from its antioxidation ability and the formation of Fe3+-TA complex. Finally, this method was applied to visual detection of TA content in different teas and red wines.
作者机构：
[Zhang, Man; Fu, Wanwan; Liu, Jiesheng; Zhao, Yunlong; Chen, Zhishan; Tan, Xiaoming] School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China;Author to whom correspondence should be addressed.;[Peng, Hao] School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China<&wdkj&>Author to whom correspondence should be addressed.
通讯机构：
[Hao Peng] S;School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
Hot stamping (or press hardening) is a new technology that is widely used in the production of advanced high-strength steel parts for automotive applications. Electrochemical measurements, including potentiodynamic polarization and electrochemical impedance spectroscopy (EIS), and accelerated corrosion tests (the neutral salt spray test and periodic immersion test) were conducted on press-hardened samples produced from uncoated (cold-rolled and cold strip production (CSP) hot-rolled) and Al-Si-coated press-hardened steels to elucidate their distinct anti-corrosion mechanisms. The cross-sectional micromorphology and element distribution of three types of press-hardened steels after a neutral salt spray test were observed using scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDAX). The corrosion resistance of Al-Si-coated press-hardened steel was found to be significantly diminished following the hot stamping process due to the presence of microcracks and elevated iron content in the coating subsequent to austenitizing heat treatment. On the other hand, the corrosion resistance of uncoated press-hardened sheets produced from cold-rolled and CSP hot-rolled press-hardened steel was found to be proximal due to their nearly identical composition and microstructure (fully martensite) after the hot stamping process. Considering the high efficiency and energy-saving properties of hot-rolled press-hardened steel, it holds the potential to replace cold-rolled and even aluminum-silicon-coated press-hardened steel in automobile manufacturing.
摘要：
Poly (ethylene oxide) (PEO) is a potential material for solid-state lithium batteries. However, the present polymer electrolyte is hampered by its low ionic conductivity at room temperature and poor mechanical properties, which are significant barriers to its practical application. Herein, we designed a high-performance composite solid electrolyte (PLSP) by incorporating PEO, LiTFSI, and the solid plasticizer butanedinitrile into a 3D polyethylene terephthalate (PET) nonwoven framework with excellent mechanical properties. The PLSP achieved an impressive ionic conductivity of 5.45 x 10-4S cm-1, nearly 100 times higher than the original PEO electrolyte (6.1 x 10-6 S cm -1) at room temperature. Additionally, the optimized composite electrolyte exhibited an extended electrochemical window of up to 5.2 V vs. Li+/Li and a remarkable tensile strength exceeding 8.55 MPa. The stability of the lithium symmetrical battery's charge and discharge voltage platform after 400 h of cycling indicated favorable interfacial compatibility between the PLSP and lithium metal. Furthermore, the assembled Li/PLSP/LFP configuration displayed a discharge specific capacity of 131.4 mA h g-1 and a capacity retention of 93.8 % after 100 cycles at 1C at room temperature, highlighting the promising potential of the composite electrolyte for solid-state lithium batteries.
摘要：
Environmental pollution caused by ciprofloxacin is a major problem of global public health. A machine learning-assisted portable smartphone-based visualized molecularly imprinted electrochemiluminescence (MIECL) sensor was developed for the highly selective and sensitive detection of ciprofloxacin (CFX) in food. To boost the efficiency of electrochemiluminescence (ECL), oxygen vacancies (OVs) enrichment was introduced into the flower-like Tb@Lu(2)O(3) nanoemitter. With the specific recognition reaction between MIP as capture probes and CFX as detection target, the ECL signal significantly decreased. According to, CFX analysis was determined by traditional ECL analyzer detector in the concentration range from 5×10(-4) to 5×10(2)μmolL(-1) with the detection limit (LOD) of 0.095nmolL(-1) (S/N=3). Analysis of luminescence images using fast electrochemiluminescence judgment network (FEJ-Net) models, achieving portable and intelligent quick analysis of CFX. The proposed MIECL sensor was used for CFX analysis in real meat samples and satisfactory results, as well as efficient selectivity and good stability.
期刊：
Frontiers in Microbiology,2024年15:1374688 ISSN：1664-302X
作者机构：
Wuhan Polytechnic University, Wuhan, China;Applied Animal and Aquatic Sciences Research Unit, Department of Agricultural Technology, Faculty of Technology, Mahasarakham University, Mahasarakham, Maha Sarakham, Thailand
摘要：
The outbreak of mass mortality occurred in Tachysurus fulvidraco farm in Hubei province of China. The pathogenic strain of Streptococcus iniae (termed 2022SI08) was isolated and identified from diseased T. fulvidraco, based on morphological, physiological and biochemical characteristics, as well as 16S rRNA gene sequence and phylogenetic analysis. Further, the whole genome of isolate S. iniae was sequenced and predicted to contain one single circular chromosome of 1,776,777 bp with a GC content of 37.14%. The genomic sequence analysis showed that 2022SI08 was positive for 204 virulent and 127 antibiotic resistant genes. The experimental challenge demonstrated the high pathogenicity of the retrieved isolate of S. iniae, with a median lethal dosage (LD50) 9.53 × 10 5 CFU/g. Histopathological examination indicated that the 2022SI08 strain could induce extensive tissue cell degeneration, necrosis, haemorrhage and inflammation in the skin, gill, fin, spleen, liver, kidney, intestine, eye and brain. Moreover, the innate immune enzyme activities in serum such as acid phosphatase and alkaline phosphatase were increased significantly at 24 and 48 hours post infection (hpi) and then decreased at 168 hpi. The transcriptional profile of immune associated gene in T. fulvidraco following bacterial infection was detected at each point of time, and the results revealed clear transcriptional activation of those genes, which proving their reacting and regulatory role during the response of the host against S. iniae infection. The results revealed that S. iniae was an etiological agent in the mass mortalities of T. fulvidraco and this research will be conducive for increasing our understanding on pathogenesis and host defensive system in S. iniae invasion.
摘要：
The current study investigated the impact of ascorbic acid (AA) on physicochemical and emulsifying properties of highland barley protein (HBP). Emulsifying and solubility of AA-modified HBP increased compared to its native state. However, excessive AA concentration induced protein reaggregation, leading to a deterioration of these properties. At a concentration of 0.3 % (w/v) AA, the highland barley protein emulsion (HBPE) exhibited the smallest average particle size (0.59 mu m), and the protein demonstrated superior emulsification properties. The observed alterations stem from the formation of covalent bonds between HBP and AA through the Maillard reaction. These changes also relate to modifications in the secondary structure, marked by a notable increase of 60.25 % in beta-turns, accompanied by reductions of 16.45 % in alpha-helices and 33.84 % in beta-sheets. This was confirmed through analyses of disulfide bond content and FTIR. The outcomes of this study hold promise for enhancing the stability of emulsion formulations based on HBP, achieved by harnessing the complex formation between HBP and AA.
摘要：
In this work, hydrogel beads with 3D network structure were successfully prepared using montmorillonite nanosheets (MMTNS) combined with macromolecule polymers. Batch adsorption tests revealed that the increase in exfoliation degree of MMTNS was beneficial to improve the methylene blue (MB) adsorption on hydrogel beads (HB). In addition, the HB with 25 % MMTNS-3 dosage achieved high mechanical strength and reached the maximum adsorption capacity of 543.1 mg/g. Effects of MB concentration (40-120 mg/L), adsorbent dosage (1-1.5 g) and flow rate (5-15 mL/min) on fixed -bed column adsorption indicated that the HB column exhibited an excellent dynamic adsorption performance and recycling performance, much better than the D113 resin. The good fits of Pseudo -first -order model and Pseudo -second -order model and a better Langmuir model fitting result implied a monolayer chemical adsorption and physical adsorption nature of MB on HB. Moreover, scanning electron microscope combined with the energy dispersive spectrometer, fourier transform infrared spectroscope and X-ray photoelectron spectroscopy measurements indicated that the adsorption mechanism was mainly attributed to Ca ion -exchange and chemical bonding of -COOH and -OH groups with MB. Such hydrogel beads showed a good potential in the application of practical wastewater treatment.
