International Journal of Applied Ceramic Technology
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2025
·
IF 2.3
Bixian Zhang,Kai Yang,Zhuohang Li,Sihao Jian,Bei Ren,Ziqian Meng,Yinghui Tang,Yang Miao
Yttrium iron garnet (YIG) ferrite is extensively utilized in microwave devices due to its exceptional fundamental electromagnetic properties and easily adjustable magnetic properties. In recent years, there has been a growing interest in investigating high-entropy garnets. However, its dielectric properties have not been extensively studied. This study prepared a series of bismuth-containing high-entropy yttrium iron garnet ferrites (Bi 0.6 Gd 0.6 Ho 0.6 Y 0.6 Re 0.6 ) Fe 5 O 12 (Re = Dy, Er, Tm, Yb) using the solid-phase reaction method. The addition of Bi 3+ to the high-entropy matrix resulted in a reduction of the optimal phase forming temperature of garnet from 1450°C to 1150°C. Despite the incorporation of Bi 3+ with a relatively large ionic radius, no heterophase generation occurred, leading to the formation of a single garnet phase. These high-entropy garnet samples exhibited unique magnetic properties along with high dielectric constants and low dielectric losses. Specifically, the dielectric constant (ε') of sample HEYIG-4 is measured at 20.26, with a low dielectric loss of just 2.78 × 10 −3 , while the specific saturation magnetization reached 16.86 emu/g. This paper expanded research within the field of high-entropy garnet ferrites.
研究领域:
材料科学
·
物理学
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产品关联
DOI
高影响因子
MOLECULES
·
2019
·Vol. 24
·期 7
·1343
·
IF 3.06
You Luo,Bin Peng,Weiqian Wei,Xiaofei Tian,Zhenqiang Wu
Guava (Psidium guajavaL., Myrtaceae) leaves have been used as a folk herbal tea to treat diabetes for a long time in Asia and North America. In this study, we isolated polysaccharides from guava leaves (GLP), and evaluated its antioxidant activity in vitro and anti-diabetic effects on diabetic mice induced by streptozotocin combined with high-fat diet. The results indicated that GLP exhibited good DPPH, OH, and ABTS free-radical scavenging abilities, and significantly lowered fasting blood sugar, total cholesterol, total triglycerides, glycated serum protein, creatinine, and malonaldehyde. Meanwhile, it significantly increased the total antioxidant activity and superoxide dismutase (SOD) enzyme activity in diabetic mice, as well as ameliorated the damage of liver, kidney, and pancreas. Thus, polysaccharides from guava leaves could be explored as a potential antioxidant or anti-diabetic agents for functional foods or complementary medicine.Keywords:polysaccharides;guava leaves;antioxidant;anti-diabetic
研究领域:
药理学
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生物化学
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营养学
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Shengtai Zhang,Zhen Teng,Linzhen Wu,Chen Chen,Yongqiang Tan,Xiaosong Zhou
Spark plasma sintering (SPS) is a fast and efficient method for preparing functional ceramics . This article investigates the phase evolution, thermal expansion and chemical stability of traditional (Y 1.2 Nd 1.8 Fe 5 O 12 ) and high-entropy ((Y, Gd, Sm, Eu, Dy) 3 Fe 5 O 12 ) garnet ceramics. Prepared under conventional SPS (50 MPa) conditions at 900–1100 °C. The results indicate that using SPS sintering method can significantly reduce the sintering temperature (1100 °C) and time (3 min) of garnet ceramics. (Y, Gd, Sm, Eu, Dy) 3 Fe 5 O 12 (1.6 × 10 −6 K −1 ) exhibits superior thermal expansion stability compared to Y 1.2 Nd 1.8 Fe 5 O 12 (5.4 × 10 −6 K −1 ). The strong REE-O bond energy and severe lattice distortion of high entropy garnet ceramics hinder the migration and diffusion of cations, resulting in higher leaching resistance of high-entropy garnet ceramics (∼10 −7 g m −2 d −1 -10 −8 g m −2 d −1 ) compared to traditional garnet ceramics (∼10 −5 g m −2 d −1 -10 −6 g m −2 d −1 ). Therefore, SPS has broad application prospects in the low-temperature preparation of high-entropy garnet ceramics for immobilization of actinide elements.
研究领域:
材料科学
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陶瓷工程
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核废料处理
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DOI
高影响因子
PHYSICA B-CONDENSED MATTER
·
2021
·
IF 2.436
Fenhong Liu,Xiaojun Tan,Shoulei Xu,Xiangyu Wang,Bernard A. Goodman,Wen Deng
Thulium-doped yttrium aluminum garnet (YAG) single crystals with composition (Tm x Y (1- x ) ) 3 Al 5 O 12 (x = 0.001–0.02) were prepared by the optical floating zone method. The crystals were of high quality with no cracks, bubbles, or inclusions, and with >80% visible light transmittance . The lowest value for the mean positron lifetime was observed with crystals which had x = 0.01, which demonstrates that this composition had the fewest number of defects. This sample also produced the highest emission intensities in the PL spectra, and had narrower lines than those previously reported for Tm 3+ -doped yttria-stabilized zirconia. However, with higher Tm 3+ concentrations, interactions between neighboring Tm 3+ ions resulted in partial quenching of the luminescence. Overall, Tm-doped YAG single crystals synthesized by the optical floating zone (OFZ) method contained few defect centers and exhibited narrow luminescence linewidths , which demonstrate potential uses in high resolution applications.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
BIOLOGICAL & PHARMACEUTICAL BULLETIN
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2015
·Vol. 38
·期 10
·1658-1662
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IF 1.828
Lu-yang Lu,Yuan Liu,Zhi-feng Zhang,Xiao-jun Gou,Jun-hao Jiang,Ji-zhong Zhang,Qian Yao
Pomegranate seed oil (PSO) has diverse bioactivities. It was hyphothesized that if PSO were employed to construct a trans-resveratrol-loaded self-nanoemulsifying drug delivery system (RES SNEDDS-PSO), not only could PSO serve as an oil phase but also exert synergistic effects with resveratrol to yield better therapeutic outcomes. In this study, we prepared RES SNEDDS-PSO for the first time to validate that hypothesis. The anti-inflammatory and anticancer activities of RES SNEDDS-PSO were compared with another SNEDDS composed of oil phase isopropyl palmitate (RES SNEDDS-IP). The results showed that upon exposure to a 10-fold amount of water, RES SNEDDS-PSO was converted into nanoemulsions with a mean size of 44 nm. Nanoemulsions enhanced the water solubility of resveratrol by 20-fold, significantly improved resveratrol stability in intestinal fluid, and slowed the decomposition of resveratrol in water by 1-fold. An in vivo anti-infection test showed that the degree of inflammatory swelling in mice given RES SNEDDS-PSO was only 60 and 76% that of the group fed with RES SNEDDS-IP at doses of 10 and 20 mg/kg, respectively. An in vitro anticancer study showed that the inhibitory rate of RES SNEDDS-PSO against MCF-7 breast cancer cells was 2.03- and 1.24-fold that of RES SNEDDS-IP at a concentration of 12.5 and 25 µg/mL, respectively. This study demonstrated that the newly developed SNEDDS may be a prospective formulation in the functional food and clinical fields.
研究领域:
药剂学
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生物医学
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食品科学
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DOI
PubMed
高影响因子
Nanomaterials
·
2019
·Vol. 9
·期 5
·721
·
IF 4.034
Zhencai Dong,Chao Xu,Yongmin Wu,Weiping Tang,Shufeng Song,Jianyao Yao,Zhengyong Huang,Zhaoyin Wen,Li Lu,Ning Hu
Garnet Li7La3Zr2O12is one of the most promising solid electrolytes used for solid-state lithium batteries. However, low ionic conductivity impedes its application. Herein, we report Ta-doping garnets with compositions of Li7-xLa3Zr2-xTaxO12(0.1 ≤ x ≤ 0.75) obtained by solid-state reaction and free sintering, which was facilitated by graphene oxide (GO). Furthermore, to optimize Li6.6La3Zr1.6Ta0.4O12, Mg2+was select as a second dopant. The dual substitution of Ta5+for Zr4+and Mg2+for Li+with a composition of Li6.5Mg0.05La3Zr1.6Ta0.4O12showed an enhanced total ionic conductivity of 6.1 × 10−4S cm−1at room temperature. Additionally, spark plasma sintering (SPS) was applied to further densify the garnets and enhance their ionic conductivities. Both SPS specimens present higher conductivities than those produced by the conventional free sintering. At room temperature, the highest ionic conductivity of Li6.5Mg0.05La3Zr1.6Ta0.4O12sintered at 1000 °C is 8.8 × 10−4S cm−1, and that of Li6.6La3Zr1.6Ta0.4O12sintered at 1050 °C is 1.18 × 10−3S cm−1.Keywords:garnet;dual substitution;spark plasma sintering;conductivity
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 11
·7009-7018
·
IF 3.9
Yong Ge,Baoliang Xu,Yiliao Liao,Xueyu Zhang,Xu Yan,Caohui Zheng,Tao Duan
Multiphase ceramics have a high application potential in the field of nuclear waste immobilization because of the efficient synergy between the individual phases. In this work, zirconia/garnet multiphase ceramics with high efficient and effective immobilization capacity of trivalent actinides were successfully prepared using conventional solid-phase sintering. ZrO 2 doping increases the lattice site available for nuclide substitution and advance the immobilization capacity of the ceramic substrate for nuclide. At the same time, the phase change of zirconia is used to tougher and improve the physical properties of the ceramic waste form. The feasibility of using multiphase ceramics for the efficient immobilization of trivalent actinides was assessed by studying the phase evolution, microstructure, Vickers hardness, and chemical stability of the multi-phase ceramics. Zr 1- x Nd x O 2- x /2 /Ca 3- y Nd y Zr 3- y Fe y -1 Fe 3 O 12 multiphase ceramics exhibited superior physical or chemical properties compared to most of the multiphase ceramics as well as the previously prepared single-phase calcium garnet ceramic waste forms. The Vickers hardness of all the multiphase ceramic samples ranged between 685 and 730 HV0.5. Under the condition of using simulate Bei Shan groundwater as leaching agent, the normalized leaching rates of Nd is approximately 10 − 6 g · m −2 · day −1 , showing good chemical stability and achieving efficient and effective immobilization of trivalent actinides. The excellent chemical, as well as physical properties of Zr 1- x Nd x O 2- x /2 /Ca 3- y Nd y Zr 3- y Fe y -1 Fe 3 O 12 multiphase ceramics are expected to make them one of the substrates for more efficient and effective immobilizing of trivalent actinides.
研究领域:
材料科学
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核废料管理
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DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2025
·
IF 3.1
Peng Yijin,Yun Yurou,Zou Wenhui,Zhou Linyan
Our study analysed the quality differences between 6 pomegranate varieties grown in Yunnan. The results showed that the composition and contents of anthocyanins, the amount of polymeric pigments produced by the reaction between anthocyanins and tannins, and pH were the primary factors affecting the colour of pomegranate arils. Fructose and citric acid were the main sugar and organic acid contributing to the taste of pomegranate arils. In total, 42 phenolic compounds were identified, with BS being classified as a distinct group due to higher concentrations of ACNs and flavonols. Additionally, 32 volatile compounds were identified, with TLZ, SP, and TGY grouped, BS, TNS, and HRY grouped into another. The key phenolic metabolic pathways included flavone and flavonol biosynthesis, anthocyanin biosynthesis, and phenylpropanoid biosynthesis, while fatty acid biosynthesis, pyruvate metabolism, and sulfur metabolism were the main volatile metabolic pathways. These results provide valuable guidance for agricultural practices and promoting industrial development.
研究领域:
食品科学
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植物化学
✓ 已验证
产品关联
DOI
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Jinyu Wu,Xinru Wang,Rundong Jiang,Genlin Zhang,Yanyan Dang
This study investigated the effects of shade drying (SD), hot air drying (HD), vacuum drying (VD), and vacuum freeze-drying (VFD) on the drying characteristics, bioactive compound content, and biological activities of pomegranate peel. Additionally, preliminary research was conducted on the antimicrobial mechanisms of pomegranate peel polyphenols. The results demonstrated that VFD achieved the shortest drying time while maintaining superior appearance quality and the highest levels of bioactive compounds: total phenolic content (TPC, 86.78 mg/g), total flavonoid content (TFC, 19.37 mg/g), total tannin content (TTC, 7.6 mg/g), total anthocyanin content (TAC, 0.07 mg/g), and ABTS antioxidant capacity (383.10 mg TE/g). The VFD treatment also showed superior •OH radical scavenging activity (122.50 mg TE/g) and α-ALA inhibition (5.18 mg/mL), as well as maximum inhibition zones against S. aureus (21.33 ± 0.04 mm), B. subtilis (16.23 ± 0.04 mm), and A. tenuissima (83.89%). The HD demonstrated slightly lower but comparable quality parameters to VFD. 22 major phenolic compounds were identified in the VFD. Molecular docking studies revealed four compounds, including punicalagin, punicalin, rutin, and ellagic acid 4-O-xylopyranoside, that effectively bound to fungal cell wall functional proteins. Among these, punicalagin exhibited primary interactions through hydrogen bonding and hydrophobic interactions with the target proteins.
研究领域:
食品科学
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植物化学
·
微生物学
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产品关联
DOI
高影响因子
Frontiers of Materials Science
·
2015
·Vol. 9
·期 4
·366-372
·
IF 1
Xia Yu,Ma Liang,Lu Hui,Wang Xian-Ping,Gao Yun-Xia,Liu Wang,Zhuang Zong,Guo Li-Jun,Fang Qian-Feng
Garnet-like Li 6.8 La 3 Zr 1.8 Bi 0.2 O 12 (LLZBO) + x mol.% Al 2 O 3 ( x = 0, 1.25, 2.50) lithium ionic electrolytes were prepared by conventional solid state reaction method under two different sintering temperatures of 1000°C and 1100°C. XPS, induced coupled plasma optical emission spectrometer (ICP-OES), XRD and AC impedance spectroscopy were applied to investigate the bismuth valance, lithium concentration, phase structure and lithium ionic conductivity, respectively. Electrical measurement demonstrated that ionic conductivity of Al-added LLZBO compounds could be obviously improved when the sample sintering temperature increased from 1000°C to 1100°C. The highest ionic conductivity 6.3×10 -5 S/cm was obtained in the LLZBO-1.25%Al sample sintered at 1100°C, in consistent with the lowest activation energy 0.45 eV for the lithium ion migration. The mechanism related with good ionic conductivity in the Al-added LLZBO sample was attributed to the lattice distortion induced by the partial Al substitution at Zr sites, which is helpful to improve the migration ability of Li ions in lattice.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2022
·
IF 6.056
Duan Zhou,Mouming Zhao,Jiankang Wang,Muniba Faiza,Xuefeng Chen,Junjie Cui,Ning Liu,Daoming Li
Punicic acid (PA)-enriched diacylglycerol (DAG) possesses both the beneficial effects of PA and DAG. However, few studies have focused on the preparation of PA-enriched DAG. Here, we report a novel and highly efficient method for the preparation of PA-enriched DAG through Lipozyme 435-catalyzed ethanolysis of pomegranate seed oil (PSO). Firstly, PSO was obtained through microwave-assisted extraction. Subsequently, four lipases were screened for their capability in the preparation of PA-enriched DAG through ethanolysis of PSO (containing 82.98% PA), and Lipozyme 435 was selected. Under the optimal conditions, the resultant mixture containing 32.86% DAG was obtained. Interestingly, Lipozyme 435 maintained superior operational stability after ten successive cycles. A scale-up reaction was then conducted under the optimized conditions and the purified product containing 51.83% DAG (containing 81.95% PA) was obtained. The final product with a low peroxide value (1.45 mmol/kg) and undetectable acid value reached edible quality. This is the first study for the preparation of PA-enriched DAG through ethanolysis and Lipozyme 435 exhibited superior capability and recyclability. Compared with other approaches for DAG preparation, this approach favored shorter reaction time and better quality of the product. This study provides useful information for further studies involving DAG preparation and modification of PSO.
研究领域:
食品科学
·
生物化学
✓ 已验证
DOI
高影响因子
FOOD CONTROL
·
2024
·
IF 5.6
Wenjie Lu,Xiaoli Dai,Renqing Yang,Zeyan Liu,Haili Chen,Yanfeng Zhang,Xinai Zhang
Pomegranate is very favored but highly susceptible to lead contamination that threatens consumer health, and thereby it is essential to establish efficient modes to monitor lead level in pomegranate. A specific and sensitive electrochemical sensor was developed for assessing lead pollution in pomegranate based on Pb 2+ -dependent DNAzyme as recognition receptor and metal-organic frameworks (MOFs) for signal output. Particularly, the used MOFs exhibited Fenton-like catalytic functions toward methylene blue (MB) as electroactive medium. Integrating with gold nanoparticles (AuNPs), the Fenton-like MOFs showed high sensitivity for electrochemical detection of Pb 2+ in pomegranate. Moreover, benefiting from the specific recognition of DNAzyme to Pb 2+ , the adjustable strategy was achieved, in which the approaching MB led to a higher signal with the absence of Pb 2+ while the detached MB gave rise to a lower signal with the presence of Pb 2+ . With the use of Fenton-like catalytic MOFs driving electrochemical aptasensing interface, this simplified detection pattern was endowed with sensitive assessment of lead pollution level in pomegranate, highlighting its promising potential in evaluating the safety of foodstuffs.
研究领域:
食品安全检测
·
环境科学
·
生物传感技术
✓ 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）