INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2021
·Vol. 56
·期 7
·3455-3462
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IF 3.713
Qiaozhen Liu,Zhuowa Li,Xiaoxue Pan,Yangyong Dai,Hanxue Hou,Wentao Wang,Xiuzhen Ding,Hui Zhang,Xiangyang Li,Haizhou Dong
Summary The purpose of this study was to expand the application range of pea protein isolates by improving the rheological properties of their acid-induced gels. A pea protein isolate was ground for different durations, and changes in the structure and properties of its gels were studied. Furthermore, the influence mechanism of grinding on gelation was revealed. The results showed that grinding slightly changed the secondary structure of the pea protein isolate and had a great impact on its tertiary structure. Compared with the unground pea protein isolate, the solubility of the ground pea protein isolate increased from 45.89% to 69.84%, and the water-holding capacity of the gels increased from 52.04% to 94.67% at 7.5 min of grinding. After grinding for 15 min, the particle size of the pea protein isolate decreased from 1292.4 to 945.7 nm, and the polydispersity index decreased from 0.387 to 0.321. Rheological measurements showed that the storage modulus ( G ′), viscosity and recovery of protein gel samples improved after grinding. Thus, grinding enhanced the potential of protein gels for new applications.
研究领域:
食品科学
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蛋白质化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Mengyao Liu,Dong Xu,Jun Zhang,Fei Pan,Changhao Liu,Xiangxin Li,Xiaoming Fang,Hualei Chen,Wenli Tian,Wenjun Peng
Tenebrio molitor protein (TMP) is a highly promising alternative protein resource. However, hydrogels formed from TMP alone typically exhibit fragility and brittleness, limiting their development and application. This study investigated the effects of varying chitosan (CS) concentrations on the mechanical properties of TMP hydrogels. We found that CS concentrations between 0.5 and 1.5 % greatly improved the mechanical properties, water-holding capacity (WHC), and rheological properties of the TMP/CS composite gels. Specifically, the incorporation of 1.5 % CS improved the storage modulus of the gel, enhanced the interaction between water and proteins, and yielded a WHC of 53.32 %. Furthermore, the addition of 1.5 % CS altered the secondary structure and spatial conformation of the protein, with a β-folding content of 43.27 %, leading to a significant enhancement of hydrophobic interactions and hydrogen bonding in the composite gel system and the formation of a dense and stable gel network structure. However, the addition of excessive CS (2.0 % ~ 3.0 %) led to phase separation of the gel system, which decreased gel strength and increased the viscosity of composite gels. In conclusion, optimized CS incorporation offers a viable theoretical basis for the development of new TMP-based food formulations.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Xuanlin Lu,Zhi Yang,Jian Zhang,Xin Zhao,Jiaxuan Chen,Wen Liu,Yicheng Zhao,Yongdan Li
Oxygen reduction and proton conduction originated from hydration are two key steps in the cathode process of protonic ceramic fuel cells. In this work, Pr 6 O 11 is impregnated into a cobalt-free BaCe 0.2 Fe 0.8 O 3-δ cathode, resulting in an improved activity of lattice oxygen and a moderate enhancement of the electrical conductivity, both of which are beneficial for charge transfer, the rate-determining step of oxygen reduction process at the cathode. The polarization resistance of bare BaCe 0.2 Fe 0.8 O 3-δ cathode for oxygen reduction is 0.115 Ω cm 2 at 700 °C, which is reduced significantly to 0.039 Ω cm 2 with the addition of 30 wt% Pr 6 O 11 . Besides, the hydration ability of the cathode is also improved with Pr 6 O 11 , and thus the combination of proton and oxygen is facilitated. A single cell with 30 wt% Pr 6 O 11 -70 wt% BaCe 0.2 Fe 0.8 O 3-δ composite cathode exhibits the highest maximum power density of 1406 mW cm −2 at 700 °C. The composite cathode also shows a good stability.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Honglang Liu,Yongqing Wu,Yanxin Li,Xin-an Xie,Pan Li,Bing Du,Lu Li
In this paper, the effects of different concentration (0.05–0.5 M) of metal ions (Na + , K + , Ca 2+ and Al 3+ ) on the gel properties and microstructure of Inca peanut albumin (IPA) were investigated. Results showed that the formation of IPA gel network was mainly in the cooling stage. The hardness, water holding capacity (WHC) and energy storage modulus of the gels increase when the NaCl and KCl concentration are lower than 0.1 M. With the increase of CaCl 2 concentration, the hardness and energy storage modulus of the gels first increased and then decreased, but the WHC did not change significantly. Moreover, 0.1 M AlCl 3 increased the WHC, surface hydrophobicity and Zeta potential of the gels, but the average particle size decreased. The above results indicate that different metal ions have different effects on the properties of IPA gels. Metal ions induced the interconversion of the IPA secondary structure, in which the increase in the content of β-sheet structure might be one of the reasons for the enhanced gel properties. NaCl, KCl and CaCl 2 induced the gels to form a tighter and more homogeneous fine-chain structure, whereas AlCl 3 induced the IPA gel network to form a "sheet-like" structure. In conclusion, the gels' microstructure and properties were improved by the low concentration of NaCl and KCl (<0.1 M), and the gels' distinctive lamellar structure created by 0.1 M Al 3+ was better suited to improving their WHC. These results will provide a valuable basis for the application of IPA gels in food colloids .
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Zehao Chen,Yunjia Wang,Xuekai Jin,Zhuoyue Tian,Yunpeng Zhang,Xiufang Wen,Jihao Zuo,Pihui Pi
Three-dimensional superhydrophilic materials, with large pores and extensive permeation channels, can achieve high-flux separation of oil-in-water emulsions. However, complex internal structure and high specific surface area also lead to severe oil contamination during the separation process, resulting in rapid declines in separation efficiency and permeation flux, necessitating frequent cleaning and significantly limiting their practical applications. The oleophobicity of superhydrophilic materials mainly relies on the hydration layer on the surface. Enhancing the combination strength of superhydrophilic surfaces to water can effectively reduce the hydration layer damage caused by oil, thereby extending the demulsification lifespan of the material. In this study, we enhance the hydration strength of the copper foam surface by constructing a special pocket-like nano structure and endowing it with a substantial number of hydrated groups. During continuous separation of oil-in-water emulsions, the copper foam filter can achieve a separation efficiency exceeding 99.1 % and a permeation flux greater than 20,000 L·m −2 ·h −1 . In cyclic separation tests, under conditions where the cleaning interval up to 150 mL of emulsion, the declined efficiency remains at 98.4 %, while the declined flux exceeds 18,000 L·m −2 ·h −1 . The cleaning interval is as high as 85 mL·cm −2 . Furthermore, after cleaning, both the separation efficiency and permeation flux of the copper foam can be completely restored, significantly outperforming the copper foam without hydration strengthen modification and various other three-dimensional materials.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
ULTRASONICS SONOCHEMISTRY
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2024
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IF 8.7
Dan Zheng,Danrong Yu,Shuai Lin,Liting Ji,Yaogui Sun,Chunyou Liu,Xiaoyu Zhang,Zhihui Yu
Salted duck eggs are a popular food product, but their high salt content and uneven salt distribution can reduce acceptability. This study investigated the effects of pH-high-intensity ultrasound combined treatment on the salt-induced gelation properties of egg yolk granules. The results showed that the pH5 + 150 W treatment group exhibited the best physical and gelation properties, with the smallest particle size (1597.33 nm), optimal dispersibility (PDI 0.29), and good stability. The gelation properties of this group also demonstrated excellent springiness (0.30 mm), cohesiveness (0.56), and gumminess (0.05 N). Furthermore, the pH5 + 150 W group had the highest water holding capacity of 97.42 % and relatively high hydrophobicity (173.39 μg). Notably, it also showed high oil exudation (2.83 %) and good sandiness (62.07 %). The pH5 + 150 W led to a significant redshift of the fluorescence peak at 335 nm and an enhancement of the peak intensity at 562 nm compared to the control group. Structural characterization revealed a more ordered protein structure and a uniform gel structure with enhanced electrostatic repulsion between oil droplets. Secondary structure analysis of the proteins showed a significant reduction in α-helix and β-sheet, while β-turn and random coil increased. In summary, the pH5 + 150 W treatment displayed the best gelation properties, providing theoretical guidance for enhancing the processing performance of yolk and expanding their application in the food industry.
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2019
·
IF 5.839
Yingying Dong,Chengrong Wen,Tingting Li,Chunhua Wu,Hang Qi,Miao Liu,Zhongli Wang,Beiwei Zhu,Shuang Song
The effects of positive and neutral charged amino acids (Arginine (Arg) and Glutamine (Gln)) on the gel properties and microstructure of potassium iota Carrageenan (KIC) were investigated. The findings suggested that the gel melting temperature (T g ) of KIC gels increased from 36 °C to 43 °C with the Gln concentration increasing, and the elastic modulus ( G’ ) increased as well. However, with the increase Arg concentration, T g and G’ of gels increased gradually and then decreased, and the maximum T g (46 °C) and G’ were obtained at concentrations of 0.05% Arg. LF-NMR results showed that the addition of Gln decreased the position of T 23 , indicating a negative effect of Gln on the water holding capacity and water mobility of KIC gels, while the addition of Arg increased the position of T 23 , showing the opposite effect. Compared to the pure KIC and Gln-KIC (GKIC), Arg-KIC (AKIC) showed a more regular network structure and a stronger water holding capacity . In addition, few chemical bonds were formed between amino acid and KIC. It is electrostatic attraction between KIC and Arg and the crowding of Gln that contributed to better gel properties. Taken together, our results provide insights for the further application of GKIC or AKIC gels in food and medical applications.
研究领域:
食品科学
·
生物化学
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2021
·
IF 5.645
Isaac Duah Boateng,Xiao-Ming Yang
Choosing a suitable intermediate-wave infrared drying condition for dried seeds and selecting the appropriate statistical technique for the drying of seeds to improve bioactive components and desired functionality is paramount in the food industry. In this study, process parameters of the intermediate-wave infrared dryer were optimized for dried Ginkgo biloba L. seeds. The screening by Plackett-Burman design (PBD) indicated that drying time, temperature, and the distance between infrared emitter and samples were the significant factors for green-red ( a* ), yellowness ( b* ), ascorbic acid (AA), and rehydration capacity (RC) responses. However, none of the factors was significant for the total flavonoid content responses’. Hence, a* , b* , AA, and RC were used for further optimization. Rotatable central composite design (RCCD) and Box-Behnken design (BBD) optimization were performed to get a minimum AA and a* degradation, maximum b*, and RC. Both designs had acceptable models. Although PBD-BBD had a higher coefficient of determination ( R 2 ), PBD-RCCD was selected for further experiment due to a higher lack of fit and lower residual standard error. The optimum conditions using RCCD were temperature =74.6 °C, time =173 min and height = 22 cm. Although dried ginkgo seeds had a lower physicochemical assessment, it had higher product quality, bioactives, antioxidants, and lower toxic components than fresh ginkgo seeds. This provides an opportunity to use an intermediate-wave infrared dryer under these optimum conditions in food processing.
研究领域:
食品科学
·
植物学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Asim A. Mohammed,Zhenfei Li,Bo Liu,Dong Yan,Jian Li,Lichao Jia
Protonic ceramic fuel cells (PCFCs) are highly efficient energy conversion devices that operate at relatively low temperatures. Enhancing their performance strongly relies on developing cathode materials with high electrocatalytic activity. This study presents a double-doped perovskite material, Pr 1.5 La 0.3 Ba 0.2 Ni 0.9 Fe 0.1 O 4+δ (PLBNF), where the electrochemical properties are significantly improved through composition and structural tuning. Comprehensive characterization confirms that the co-doping strategy effectively enhances the hydration capability, oxygen reduction reaction (ORR) activity, and operational stability. At 700 °C, the polarization resistances of the PLBNF cathode and the PLBNF-BZCYYb composite cathode are 0.11 and 0.08 Ω cm 2 , respectively, with peak power densities reaching 1012 and 1277 mW cm −2 . Fuel cell tests demonstrate excellent operational stability for the PLBNF-BZCYYb air electrode, indicating its strong potential for application in high-performance proton-conducting ceramic fuel cells. This work provides new insights into the development of efficient fuel cell materials and advances related energy technologies.
研究领域:
材料科学
·
电化学
·
能源材料
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固体氧化物燃料电池
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功能陶瓷
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Liming Zhang,Bingjie Pang,Shiqing Hu,Zhongwei Cao,Peng Zhang,Xuefeng Zhu,Weishen Yang
Protonic ceramic fuel cells (PCFCs) are promising power generation equipment because of their high efficiency and low operating temperature. However, the sluggish oxidation-reduction reaction (ORR) kinetics of the cathode seriously limits their further development. Here, a low-valent alkaline-earth metal Mg-doped BaCo 0.4 Fe 0.4 Zr 0.2 O 3-δ (BaCo 0.4 Fe 0.4 Zr 0.1 Mg 0.1 O 3-δ = BCFZMg0.1) cathode is developed to increase oxygen vacancy concentration and hydration capability of mixed oxygen ion-electron conducting (MIEC) electrode materials . The phase composition , microstructure, and stability in wet air were examined, while the oxygen vacancy , hydration capability, conductivity, and surface species of the materials were investigated. Experimental results demonstrate that the oxygen vacancy concentration, hydration capability, and conductivity are all increased by Mg doping. Consequently, the ORR active sites were expanded to the whole electrode surface , and the electrochemical performance of PCFCs with BCFZMg0.1 cathode was greatly improved (peak power density: >40% increase; polarization resistance : 60–70% decrease). This work provides a new strategy to develop cathodes with high ORR activity for PCFCs by doping Mg into the MIEC perovskite B-site.
研究领域:
材料科学
·
能源工程
·
电化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Jiqun Li,Yan Zhang,Shiyu Song,Yifan Ma,Jianlin Yang
Membrane separation technology offers an ideal strategy for the efficient separation of emulsified oily wastewater by constructing superhydrophilic coatings on porous substrates. However, coatings exhibit more susceptible to fouling, leading to a decline in separation performance. Herein, a robust and durable superhydrophilic polydopamine/polyethyleneimine (PDA/PEI)-MgCO 3 mineralized coating with resistance to crude-oil fouling was successfully developed via co-deposition coupled with biomineralization. The mineralization effect of the PDA/PEI adhesive layer and organic dextran enabled uniform dispersion of inorganic MgCO 3 nanocrystals across PDA/PEI co-deposited substrates. More importantly, polypropylene membrane with PDA/PEI-MgCO 3 coating exhibited high separation flux (>925 L m −2 h −1 bar −1 ), exceptional efficiency (99.6 %), and long-term stable cyclic separation capability (98.9 % flux recovery) for crude-oil-in-water emulsions containing surfactant. Anti-crude-oil-fouling mechanism of the mineralized coating was further elucidated using density functional theory calculations. There is a strong adsorption interaction between the CO 3 2− in MgCO 3 and water molecules, demonstrating excellent hydration capacity. The synergistic effect of the hydrophilic CO 3 2− functional groups in the mineralized coating and the surface nanocomposite structure significantly enhances its hydration capacity, exhibiting exceptional resistance to crude-oil fouling. Additionally, the PDA/PEI-MgCO 3 coating demonstrates excellent chemical durability and prolonged stability, showing its strong potential for large-scale treatment of emulsified crude-oil-containing wastewater.
研究领域:
材料科学
·
化学工程
·
环境科学
·
纳米技术
·
表面工程
✓ 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）