Food Bioscience
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2022
·
IF 5.318
Yu Jin,Bin Shu,Xinman Lou,Kunhua Wang,Yunhui Zhai,Yingjuan Qu,Ruijuan Song,Fuguo Liu,Xiaobo Dong,Huaide Xu
Nervonic acid (NA, ω-9) is beneficial for brain health, but its poor water solubility limits its bioaccessibility. The protein-based emulsions were unstable under environmental stress. In this study, the effects of a nonionic surfactant (Tween 20, T20) on the characteristics, stability, and in vitro digestion properties of NA-loaded nanoemulsions prepared with proteins (whey or soybean protein isolate) were evaluated. The emulsions stabilized by protein-T20 mixtures had smaller droplets with more even distributions, more negative charges, and higher encapsulation efficiencies for NA. The addition of T20 improved the interfacial properties of the systems, as confirmed by spectral and rheological analyses. Emulsion stability under various conditions was enhanced by the improved interfacial composition and emulsifying ability. In particular, the effective interfacial layers produced by the protein-T20 mixture decreased lipid digestion but increased NA bioaccessibility. Therefore, the co-adsorption of proteins with suitable nonionic surfactants at oil-water interfaces is a promising approach for designing functional food delivery systems with improved stability and NA bioaccessibility.
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高影响因子
MICROCHEMICAL JOURNAL
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2022
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IF 5.304
Yan-Hua Yuan,Hai-Xin Gu,Qi-Yuan Xie,Jun Zhang
Surface-enhanced Raman scattering (SERS) technology has been widely used in the field of environmental pollutant detection due to its fast and intuitive characteristics and low water interference. Herein, a low-cost and flexible SERS substrate was fabricated by transferring gold nanoparticles (NPs) onto polydimethylsiloxane (AuNPs@PDMS) membranes, which enabled highly sensitive detection of aromatic amine pollutants in wastewater after fire suppression. Finite time domain-difference calculations confirmed that the uniformly distributed NP gap significantly enhanced the localized electromagnetic field. The AuNPs@PDMS substrate performed satisfactorily in testing for rhodamine 6G (R6G) with a detection limit (LOD) of 5.5 × 10 −10 M. This substrate also demonstrated high reproducibility for detection of different concentrations of R6G and the relative standard deviation (RSD) was <7 %. These excellent SERS properties made AuNPs@PDMS a promising substrate in the detection of aniline and benzidine. Quantitative analysis of aniline and benzidine was achieved with LODs of 4.5 × 10 −9 and 7.8 × 10 −9 M, respectively. In addition, this substrate could be applied in rapid analysis of mixtures in wastewater after fire suppression using SERS without any complex pretreatments, displaying a great potential for rapid, high-sensitivity, and on-site detection of contaminants in fire-fighting sites.
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高影响因子
ACS Applied Nano Materials
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2023
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IF 5.9
Xianghua Gong,Yang Li,Jinzhu Wu,Hongjun Kang,Xiaohong Wu
Recently, zeolites have been selected as a potential adsorbent for capturing space molecular contaminants owing to their strong adsorption ability and extreme stability in a harsh environment. Considering the adsorption process in a vacuum environment, enhancement of the adsorption performance of the zeolites is required. Unfortunately, up to now, the improved adsorption behavior for the space molecular contaminants of the modified zeolite adsorbent under ultralow pressure has rarely been reported. Herein, a 13X/ZnO adsorbent was prepared by incorporating ZnO nanoislands into the nanoporous zeolite 13X via atomic layer deposition (ALD). It is found that a representative 13X/ZnO-50 exhibits an increased adsorption capacity toward dimethyl phthalate and the outgassing species of J133 adhesive even under the ultralow pressure of 10–5 Pa. This could be attributed to the synergistic effects of physical interactions and chemical adsorption associated with the unique cage structure of the zeolite and the incorporated ALD-grown ZnO nanoislands. This work provides a useful strategy for developing the adsorbents used in space molecular contamination control during space missions.
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高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Han Kang,Ze Zhang,Wei Zhou
Rhodamine B(RhB) was encapsulated in Tb(btc) (btc = 1,2,4-benzene tricarboxylic acid) frameworks by “one-pot” method, and the complex RhB@Tb(btc) with host-guest dual fluorescence emissions was synthesized. Compared with the stability of Tb 3+ emission, the characteristic emission of RhB at 620 nm showed a more sensitive response to ambient temperature. By integrating the different temperature dependence of Tb 3+ and RhB emissions, the temperature sensing of RhB@Tb(btc) was determined with relative sensitivity ranging from 0.43 to 0.59% K −1 (temperature range 298–353 K). Among several common antibiotics, RhB@Tb(btc) showed fluorescence quenching response to metronidazole (MDZ) and color transition to levofloxacin (LOFX) respectively with stable reusability. The combination of photoinduced electron transfer and internal filtration effect was confirmed as the contributor to MDZ induced fluorescence quenching. Furthermore, hydrogels and milk, which were added antibiotics on purpose for simulating unsafe foods, were detected at in situ temperature by RhB@Tb(btc) test paper, which achieved highly sensitive and highly selective detection to MDZ and LOFX with limit of detection reaching 10 −6 M.
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高影响因子
Forests
·
2022
·Vol. 13
·期 1
·61
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IF 3.282
Yuan Zhong,Yuhong An,Kebing Wang,Wanqi Zhang,Zichu Hu,Zhangjing Chen,Sunguo Wang,Boyun Wang,Xiao Wang,Xinran Li,Xiaotao Zhang,Ximing Wang
Heavy metal wastewater treatment is a huge problem facing human beings, and the application degree ofSalix psammophilaresources produced by flat stubble is low. Therefore, it is very important to develop high-value products ofSalix psammophilaresources and apply them in the removal heavy metal from effluent. In this work, we extracted the cellulose fromSalix psammophila, and cellulose nanofibers (CNFs) were prepared through TEMPO oxidation/ultrasound. The aerogel spheres derived fromSalix psammophila(ASSP) were prepared with the hanging drop method. The experimental results showed that the Cu(II) adsorption capacity of the ASSP composite (267.64 mg/g) doped with TOCNF was significantly higher than that of pure cellulose aerogel spheres (52.75 mg/g). The presence of carboxyl and hydroxyl groups in ASSP enhanced the adsorption capacity of heavy metals. ASSP is an excellent heavy metal adsorbent, and its maximum adsorption values for Cu(II), Mn(II), and Zn(II) were found to be 272.69, 253.25, and 143.00 mg/g, respectively. The abandoned sand shrub resource of SP was used to adsorb heavy metals from effluent, which provides an important reference value for the development of forestry in this sandy area and will have a great application potential in the fields of the adsorption of heavy metals in soil and antibiotics in water.Keywords:sandy shrub;cellulose;TEMPO;aerogel;adsorption
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Green Energy & Environment
·
2022
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IF 12.781
Daqiang Yan,Lin Zhang,Lei Shen,Runyu Hu,Weiping Xiao,Xiaofei Yang
Developing high efficient Pd-based electrocatalysts for oxygen reduction reaction (ORR) is still challenging for alkaline membrane fuel cell, since the strong oxygen adsorption energy and easy agglomerative intrinsic properties. In order to simultaneously solve these problems, Pd/Co 3 O 4 –N–C multidimensional materials with porous structures is designed as the ORR catalysts. In details, the ZIF-67 with polyhedral structure was firstly synthesized and then annealed at high-temperature to prepare the N-doped Co 3 O 4 carbon-based material, which was used to homogeneously confine Pd nanoparticles and obtained the Pd/Co 3 O 4 –N–C series catalysts. The formation of Co–N and C–N bond could provide efficient active sites for ORR. Simultaneously, the strong electronic interaction in the interface between the Pd and N-doped Co 3 O 4 could disperse and avoid the agglomeration of Pd nanoparticles and ensure the exposure of active sites, which is crucial to lower the energy barrier toward ORR and substantially enhance the ORR kinetics. Hence, the Pd/Co 3 O 4 –N–C nanocompounds exhibited excellent ORR catalytic performance, ideal Pd mass activity, and durability in 0.1 mol L −1 KOH solution compared with Co 3 O 4 –N–C and Pd/C. The scalable synthesis method, relatively low cost, and excellent electrochemical ORR performance indicated that the obtained Pd/Co 3 O 4 –N–C electrocatalyst had the potential for application on fuel cells.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 8
·5886-5898
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IF 2.779
Tong Xingyu,Li Wei,Li Jiaying,Lu Shaowei,Wang Baichen,Ma Keming,Yang Chun,Li Qiuwen
Multi-component composite can effectively improve the electromagnetic interference shielding effectiveness (EMI SE) due to the synergistic effects. Herein, graphene aerogel (GA) provides a three-dimensional network framework and in situ generation of titanium dioxide (TiO 2 ) on its network layer by the sol–gel method. After microwave irradiation reduction, the titanium dioxide/microwave-reduced GA (TiO 2 /MRGA) was immersed in epoxy resin solution and cured to obtain its composite. The existence of the Ti–O–C bond proves the favorable combination of TiO 2 and MRGA. Under electromagnetic radiation, MRGA and TiO 2 generate a synergistic effect to improve the EMI SE of the composite. When the mass ratio of TiO 2 to MRGA is 1.5:1 (2.1 wt%+1.4 wt%), the composite exhibits a maximum EMI SE of 32.5 dB in the X band. Moreover, when the mass ratio of TiO 2 to MRGA is in the range of 1 to 1.8, the average EMI SE of the composites increases by 37% compared with that of the MRGA/Epoxy composite. The research indicates that this kind of EMI shielding composite has enormous application potential.
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高影响因子
MATERIALS & DESIGN
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2022
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IF 9.417
Bocheng Lei,Xiaobo Gao,Ran Zhang,Xin Yi,Qing Zhou
The development of a scaffold that can be quickly prepared and used to repair maxillofacial bone defects is an urgent clinical need. 3D printing technology can prepare personalized bone defect substitutes according to the computed tomography (CT) data of the patient's defect location. Magnesium is a bioactive molecule that plays an important role in the process of bone repair. In this study, different contents of magnesium phosphate (Mg 3 (PO 4 ) 2 ) were incorporated into polycaprolactone (PCL), and a bone defect repair scaffold was prepared using 3D printing technology. In vitro results showed that PCL scaffolds containing 20 % Mg 3 (PO 4 ) 2 (PCL#20MgP) had the strongest ability to promote osteogenic differentiation. Micro-CT and histological staining results of the repair of tibial defects in rats also further proved that the PCL#20MgP scaffold had strong bone formation ability in vivo . The PCL#20MgP scaffold was used to repair the rabbit maxillofacial bone defect. The Micro-CT results also confirmed that PCL#20MgP had a better osteogenesis effect than the PCL scaffold. The PCL#20MgP scaffold has good clinical application prospects in the field of maxillofacial bone defect repair.
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FOOD CHEMISTRY
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2022
·
IF 9.231
Hongdong Song,Qingyu Wang,Aijing He,Sen Li,Xiao Guan,Yawen Hu,Siyi Feng
Hordein nanoparticles have been successfully fabricated to encapsulate EGCG. The present study aimed to investigate the effect of hordein nanoparticles encapsulation on antioxidant activity, storage stability and in vitro release of EGCG. The antioxidant activities of EGCG before and after encapsulation by hordein nanoparticles had no significant difference. The 28-day storage experiments indicated that EGCG-hordein nanoparticles had a good storage stability in terms of average diameter and zeta potential. Meanwhile, the stability of EGCG was significantly improved by hordein nanoparticles encapsulation. The remaining amount of encapsulated EGCG was 1.31-fold and 1.52-fold higher than that of free EGCG at 4 °C and 25 °C, respectively. The release study in the simulated gastric or intestinal fluids suggested that hordein nanoparticles could slow down the release of EGCG in the simulated gastric or intestinal fluids. These results showed that encapsulation of EGCG using hordein nanoparticles could be a promising approach to improve its stability.
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PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2022
·
IF 6.449
Ya zhu Wang,Jin Zheng,Muhammad Nawaz,Fan Yang,Jiajun Hu,Min-Tian Gao
In this study, it was found that soluble polysaccharides (SPs) from rice straw were conjugated with high levels of phenolic compounds . A gradient ethanol precipitation method was used to separate conjugates with different phenolic compound components. These conjugates were mainly composed of disaccharides or trisaccharides and phenolic acids that were mainly p- coumaric acid, ferulic acid, vanillic acid, and vanillin. SPs with more conjugates exhibited better effects on Saccharomyces cerevisiae and ethanol fermentation . The change in the proportion of conjugates in SPs significantly affected the accumulation of intracellular trehalose and glycerol content, indicating the effect of the conjugates on intracellular osmotic stress. Moreover, SPs with more conjugates generated lower intracellular hydrogen peroxide (H 2 O 2 ) levels. Thus, oligosaccharide and phenolic compound conjugates in SPs promoted yeast growth and ethanol fermentation. For instance, OD value reached 9.4, which was 1.3 times higher than the control group, and ethanol content at 36 h was 36.5 g/L, which was 1.3 times higher than the control. Osmotic pressure alleviation and lowered intracellular H 2 O 2 levels by conjugates are key mechanisms of the SPs during yeast growth and ethanol fermentation.
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高影响因子
Water
·
2022
·Vol. 14
·期 8
·1223
·
IF 3.53
Xiaoqun Zhang,Weiyou Zheng,Heng Zhang,Yi Chai,Guoliang Ruan
In order to understand the difference in muscle nutritional quality between yellow catfish (Pelteobagrus fulvidraco) cultured in in-pond raceway systems (IPR) and traditional ponds (TRP), two modes were used to culture the yellow catfish with the same initial body weight [average body weight (15.69 1 ± 2.28) g] for 60 days. The growth index, muscle texture characteristics, muscle nutritional components, amino acids and fatty acids of the fish were measured after the culture experiment. The results showed that the weight gain rate, specific growth rate and survival rate of IPR were significantly higher than TRP (p< 0.05). The hardness, elasticity, chewiness and resilience of the yellow catfish cultured in IPR were significantly higher than those cultured in TRP (p< 0.05). The crude protein content in the muscle of the yellow catfish cultured in IPR was significantly higher than that cultured in TRP (p< 0.01), while the content of crude fat and water was significantly lower (p< 0.01). The total amount of amino acids, essential amino acids and flavor amino acids of IPR were significantly higher than TRP (p< 0.01). The percentages of saturated fatty acids in muscle of the yellow catfish cultured in IPR and TRP were 3.59% and 3.83%, respectively, and the percentages of unsaturated fatty acids were 96.41% and 96.17%, respectively. It was concluded that the nutritional quality of yellow catfish cultured in IPR was better than that of fish cultured in TRP.Keywords:pond;catfish;water quality;growth;muscular texture;nutritional component
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Energy Storage Materials
·
2022
·
IF 20.831
Shuanghui Han,Zhenbang Li,Yuji Zhang,Danni Lei,Chengxin Wang
The practical application of rechargeable lithium metal batteries is limited by inhomogeneous lithium deposition and infinite side reactions. In practical scenarios, the temperature of the battery increases, which may aggravate side reactions and decrease the battery efficiency significantly. Herein, we report a unique lithium thermal reduction method for producing lithium-rich alloys from metal ethoxides. The uniformly distributed nanoscale Li–Al alloy in Li metal anodes can induce the uniform deposition of lithium metal and effectively inhibit side reactions. Therefore, the lithium rich alloy anode presents extremely low overpotential (5 mV) and cycles for 1000 h with no short circuit at the range of 30–60 °C under 0.5 mA cm −2 and 1 mAh cm −2 . When the anode is coupled with a commercial high loading LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathode (8.8 mg cm −2 ), a capacity retention of 72% is obtained after 490 cycles at 30 °C. Furthermore, the cell matched with a higher mass loading LiNi 0.6 Co 0.2 Mn 0.2 O 2 cathode (21.6 mg cm −2 ) maintained a high coulombic efficiency of 99.5% and a stable cycle for 300 h at 60 °C.
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