FOOD CHEMISTRY
·
2022
·
IF 9.231
Okon Johnson Esua,Da-Wen Sun,Jun-Hu Cheng,Ji-Lin Li
The effects of the treatment (UPFL) combining ultrasound (US) with plasma functionalized liquids (PFL) were evaluated on the quality of vacuum-packaged silver Pomfret stored at 4 ℃ for 15 days. Conformational modifications in myofibrillar proteins, improvements in nutritional value and biomedical index of fatty acids and lipids, reduced pH of 5.70, increased K -value, TBARS, and TVB-N at values of 12.05%, 0.576 mg MDA/kg, and 9.15 mg N/100 g, respectively, and 1.99 log reductions in spoilage microorganisms were evident immediately after treatments. UPFL presented better quality preservative effects when compared with individual applications of US or PFL, and vacuum packaging ensured optimal quality enhancement effects such as stability of myofibril fragmentation, inhibition of physicochemical quality degradation, and microbial growth control. The results also revealed the predominant cultivable spoilage microbiota of vacuum-packaged silver Pomfret treated with UPFL, providing valuable information towards developing broad-spectrum sanitisers and hurdle technology for the seafood industry.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Soft Matter
·
2022
·Vol. 18
·期 20
·3856-3866
·
IF 4.046
Panpan Li,Aixin Song,Jingcheng Hao,Xu Wang
In biology, nonequilibrium assembly is characterized by fuel-driven switching between associating and nonassociating states of biomolecules. This dynamic assembly model has been used routinely to describe the nonequilibrium processes in synthetic systems. Here, we present a G-quartet-based nonequilibrium system based on fuel-driven co-assembly of guanosine 5′-monophosphate disodium salt hydrate and urease. Addition of lanthanum(III) ions to the system caused macroscopic dynamic switching between precipitates and hydrogels. Interestingly, combined analyses of the nonequilibrium systems demonstrated that molecules could switch between two distinct associating states without undergoing a nonassociating state. This finding suggested a nonequilibrium assembly mechanism of topological reconfiguration of molecular assemblies. We detailed quantitatively the nonequilibrium assembly mechanism to precisely control the phase behaviors of the active materials; thus, we were able to use the materials for transient-gel-templated polymerization and transient circuit connection. This work presents a new nonequilibrium system with unusual phase behaviors, and the resultant active hydrogels hold promise in applications such as fluid confinements and transient electronics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Okon Johnson Esua,Da-Wen Sun,Jun-Hu Cheng,Huifen Wang,Chen Chen
Hybridising plasma functionalized water and ultrasound pretreatment for the enzymatic hydrolysis (HPUEH) of Larimichthys polyactis was evaluated by adopting Plackett-Burman design for parametric screening of six key variables, and Box-Behnken design for optimizing three most significant variables including plasma generating voltage (P V ), ultrasound treatment time (U T ), and enzyme concentration (E C ). The models developed for predicting the degree of hydrolysis (DoH), protein recovery (PVY), and soluble protein content (SPC) were sufficiently fitted to the experimental data (R 2 ≥ 0.966) with non-significant lack of fit and used for determining the optimum conditions as P V of 70 V, U T of 15 min, and E C of 1.787%, with predictive values of 27.74%, 85.62%, and 3.28 mg/mL for DoH, PVY, and SPC, respectively. HPUEH presented hydrolysates with smaller peptide sizes and molecular weights, enhanced DoH, PVY, SPC, amino acids and antioxidant activity, but reduced emulsifying and foaming properties when compared with conventional enzymatic hydrolysis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Xiaochun Ma,Zhaodong Zhu,Haichuan Zhang,Shenglong Tian,Xiaohong Li,Huiming Fan,Shiyu Fu
Deacidification and surface self-cleaning are of great significance for the long-term preservation of historic literature. Herein, a superhydrophobic self-cleaning coating, derived from nanocellulose coated with CaCO 3 particles is constructed via chemical vapor deposition (CVD) for the first time for the preservation of historic paper. The static contact angle of superhydrophobic paper reached more than 150° and the minimum sliding angle was 6.4°. Deacidification effect was achieved with a desired pH value in the range from 7.50 to 7.77 and the maximum alkali storage was up to 1.235 mol/kg. It is found that the low-cost CaCO 3 nanoparticles can not only remove the acid substances, but also gave the paper function of self-cleaning, which is very great significant for the protection of paper-based relics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GOLD BULLETIN
·
2022
·Vol. 55
·期 1
·31-40
·
IF 1.564
Wang Cuiping,Zhang Huan,Wang Chunrong
A simple template-free method was developed for the fabrication of fibers whose surfaces were covered by a three-dimensional interconnected network of Au nanostructures (3D-NW AuNSs) without additional stabilizer. The EDS and XPS measurements confirmed the metallic nature of the formed 3D gold nanowire networks on the fiber surface. The morphology of these 3D-NW AuNSs can be controlled by the experimental parameters, such as reaction time, roughness of the glass fiber surface, HAuCl 4 , and sodium citrate concentration. The 3D gold nanowire networks showed excellent uniformity. Additionally, the nanofiber was used to accurately and reliably detect methyl red (MR), crystal violet (CV), and acridine orange (AO), which can be detected as low as 1, 10, and 5 μg/L, respectively. Since the proposed strategy is simple, cost-effective, and reproducible for the mass production of network-like gold film–covered nanofiber, it is expected to play an important role in the development of trace analytical devices.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 3
·1079
·
IF 4.927
Henghui Zhang,Zhijun Zhang,Dongliang He,Shuying Li,Yongping Xu
Botanical oils are staple consumer goods globally, but as a by-product of oil crops, meal is of low utilization value and prone to causing environmental problems. The development of proteins in meal into bioactive peptides, such asPerillapeptide, through biotechnology can not only solve environmental problems, but also create more valuable nutritional additives. In the present work, the hydrolysis process ofPerillameal protein suitable for industrial application was optimized with the response surface methodology (RSM) on the basis of single-factor experiments. Alcalase was firstly selected as the best-performing among four proteases. Then, based on Alcalase, the optimal hydrolysis conditions were as follows: enzyme concentration of 7%, hydrolysis temperature of 61.4 °C, liquid-solid ratio of 22.33:1 (mL/g) and hydrolysis time of 4 h. Under these conditions, the degree of hydrolysis (DH) ofPerillameal protein was 26.23 ± 0.83% and the DPPH scavenging capacity of hydrolysate was 94.15 ± 1.12%. The soluble peptide or protein concentration ofPerillameal protein hydrolysate rose up to 5.24 ± 0.05 mg/mL, the ideal yield of which was estimated to be 17.9%. SDS-PAGE indicated that a large proportion of new bands in hydrolysate with small molecular weights appeared, which was different from the originalPerillameal protein. The present data contributed to further, more specific research on the separation, purification and identification of antioxidant peptide from the hydrolysate ofPerillameal protein. The results showed that the hydrolysis ofPerillameal protein could yield peptides with high antioxidant activity and potential applications as natural antioxidants in the food industry.Keywords:Perillameal protein;hydrolysate;response surface methodology;antioxidant activity;peptide
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Longming Jin,Lijie Hu,Songmiao Liang,Zhiliang Wang,Guoyang Xu,Xingsheng Yang
The organic solvent nanofiltration (OSN) membranes are an attractive candidate that enable carbon-neutral nature in both isolation and purification process. However, the application of current commercial available OSN membranes is severely hindered by their inferior permeability and selectivity. Here, using poly(m-phenylene isophthalamide) (PMIA) as support, a thin film composite (TFC) membrane with remarkably high permeability and ideal selectivity is fabricated in an industrial-scale manufacturing line and the relevant spiral-would module is successfully prepared. Optimization by the solvent activated, the TFC membrane with an extraordinary solvent permeation for acetone, methanol and acetonitrile are 63, 41 and 38 L m −2 h −1 ∙bar −1 , respectively. The nanofiltration performance of A-TFC membrane supports out-performs: at similar rejection (100%) the methanol and acetonitrile permeance increased dramatically at 10 and 5 times than current commercial OSN membranes, respectively. The spiral-would module is carried out in methanol and acetonitrile RB (1017 g mol −1 ) solution, which displays a high permeate fluxes and stable separation performances, methanol: 112 GPD, 98%; acetonitrile: 99 GPD, 99.3%. This work provided a large-scale facile process for high-performance PMIA based OSN membrane, and the fabrication of spiral-would module, which should be promising for manufacture of solvent-resistant TFC membrane in industrial scale-up.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 8
·4550-4561
·
IF 4.036
Yun Liu,Haihua Yang,Tao Chen
It is highly desirable to explore efficient catalysts for reducing toxic Cr6+ to benign Cr3+ under mild and eco-friendly conditions. This article describes a facile fabrication of nitrogen doped carbon (N@C-g-C3N4) as a metal-free catalyst for Cr6+ reduction using lignin as a carbon source and g-C3N4 nanosheets as a nitrogen source. The structural properties of the N@C-g-C3N4 catalyst are characterized by TEM, HR-TEM, XRD, TGA, Raman, EDS-mapping, XPS and BET techniques. The summation of these analyses sheds light on the high surface area (903 m2 g−1), mesopore size (17.3 nm) and defects (ID/IG = 0.97) of N@C-g-C3N4, which contribute to its excellent catalytic activity in HCOOH-mediated reduction of Cr6+ to Cr3+ with high rate constant (2.98 min−1) and turnover frequency (2.21 molK2Cr2O7 gcatalyst−1 min−1) and complete degradation (100%) within 5 min. The catalytic performance of the catalyst reveals that the reduction activity is significantly dependent on the concentration of Cr6+ and HCOOH, catalyst loading, pH, temperature, and foreign ions. Particularly, the N@C-g-C3N4 catalyst shows superior stability and renewability with little loss of activity (≥95%) after 8 months storage and five repeated uses. Furthermore, N@C-g-C3N4 can be applied in other hydrogenation reactions involving K3[Fe(CN)6], 4-NP and BPA using NaBH4 as a hydrogen donor, and the removal of organic dyes. These findings illustrate that N@C-g-C3N4 as a metal-free catalyst is effective, versatile and eco-friendly for the reduction of Cr6+ from contaminated environments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Can Cheng,Wenjun Huang,Haomiao Xu,Zhisong Liu,Xianwei Li,Hongzhi Shi,Yongmei Yu,Zan Qu,Naiqiang Yan
The steel smelting process produces extensive CO 2 and Ca-containing steel slag (SS). Meanwhile, the low value utilization of steel slag results in the loss of Ca resources. CO 2 sequestration utilizing SS can reduce carbon emissions while achieving Ca circulation. However, conventional SS carbon sequestration methods suffer from slow reaction rates, finite Ca usage efficiency, and difficulty separating the CaCO 3 product from SS. Herein, an innovative two-step leaching (TSL) and carbonation method was presented based on the variations in leaching efficiency of activated Ca under different conditions, aiming at efficient leaching, carbon sequestration, and high-value reuse of SS. This method employed two NH 4 Cl solutions in sequence for two leaching operations on SS, allowing the Ca leaching rate to be effectively increased. According to the findings, TSL could increase the activated Ca leaching rate by 26.9 % and achieve 223.15 kg CO 2 /t SS sequestration compared to the conventional one-step leaching (CSL) method. If part of the CaCO 3 is recovered as a slagging agent, about 34.1 % of the exogenous Ca introduction could be saved. In addition, the CO 2 sequestration of TSL did not significantly decrease after 8 cycles. This work proposes a strategy that has the potential for recycling SS and reducing carbon emissions.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiaofang Feng,Chenchen Liu,Runxuan Long,Shuning Liu,Xiaobo Liu
This study used a CuSO 4 /H 2 O 2 catalyst to accelerate the oxidation and polymerization of dopamine in solution to facilitate the rapid deposition of polydopamine (PDA) onto a melamine foam. Dopamine provided the Fe 3 O 4 adhesive layer and additional photocatalytic electron transfer channels for the foam. Stearic acid (SA) was used as the final incorporation on the surface of melamine foam(MF) to further superhydrophobically modify the magnetic foam (MF@PDA/Fe 3 O 4 ) to obtain superhydrophobic magnetic MF@PDA/Fe 3 O 4 @SA foam. The foam has excellent capacity, acid resistance, alkali resistance, flame retardant, and salt resistance and can be conveniently separated, recycled, and recovered using magnetism. At the same time, peroxymonosulfate (PMS) can be activated to generate super-active radicals. Within 16 min, the degradation rate of sulfadiazine (SDZ) reached 99.8 %. Trapping experiments and EPR analysis confirmed the critical roles of ·OH, ·SO 4 − and 1 O 2 in SDZ removal. The wide pH working range (1.0 ∼ 13.0) and the slight toxicity of photocatalytic intermediates indicate that the as-prepared MF@PDA/Fe 3 O 4 @SA/PMS system has good application potential. The foam has potential practical applications in emergency oil spill rescue and oil/organic solvent wastewater treatment. Furthermore, this study provides a promising strategy for designing and fabricating a novel magnetic foam and photoactivated PMS synergistic system to eliminate pharmaceutical antibiotics effectively.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Lan Luo,Fenghua Zhang,Linlin Wang,Yanju Liu,Jinsong Leng
Achieving high thermal conductivity in rigid liquid crystal-based units without compromising their superflexibility is challenging. A strategy tacking synergistic enhancement of hydrogen bonds and liquid crystal main chains to form a multidimensional cross-linking network structure is proposed. An intrinsically thermally conductive shape memory polymers with ultra-high strength, ultra-high toughness, low-temperature resistance and wear resistance were obtained. It can lift up to 10,000 times its own weight (10 kg), has a bending radius of even 0.99 mm and remains super-flexible at −190 °C, achieving an unprecedented damage tolerance for thermosetting resins and laying the foundation for its foldability. We regulate the spherical crystal size by the solvent-induced self-assembly method, achieving an intrinsic thermal conductivity of 1.2 W/m·K. We took inspiration from the bionic structure of earwig wings combined with a crease vanishing function to apply high-aspect-ratio deployment structures in aerospace, achieving compatibility between deformation and load bearing.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 12
·5059-5070
·
IF 1.6
Guo Zifang,Zhang Yang,Jiao Limin,Li Yifan,Lin Zijian,Du Xiangyi,Zhao Xing,Gao Xuan,Yu Guobing,Liu Chunyu,Lin Mingzhang
The radiolytic behaviors of aqueous ammonia solutions under γ-ray irradiation were investigated, focusing on several factors, including initial ammonia concentration, absorbed dose, and H 3 BO 3 concentration. The main species including ammonia, H 2 O 2 , nitrogen oxides, and H 2 , were quantitatively analyzed. The results revealed the significant influence of the initial ammonia concentration on the radiolytic behavior of the aqueous ammonia solution. The existence of ammonia in the solution exhibited suppression of the concentrations of H 2 O 2 and O 2 . Furthermore, the radiolysis of aerated aqueous ammonia solution led to the formation of nitrogen oxides (NO 2 − and NO 3 − ). This process was driven by multiple oxidation reactions, in which O 2 and ·OH played crucial roles. Interestingly, the addition of H 3 BO 3 provided protection to ammonia during γ irradiation, while the concentration of H 2 O 2 was increased.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）