Food and Bioprocess Technology
·
2020
·Vol. 13
·期 9
·1621-1632
·
IF 3.356
Wan Jiawei,Pei Yaqiong,Hu Ying,Ai Tingyang,Sheng Feng,Li Jing,Li Bin
Preservation of refrigerated meat has always been a concern in food industry. In our study, eugenol (Eu) microcapsules were prepared to solve this problem. Eu was embedded into a gelatin-based emulgel with both low-energy and high-energy methods. The emulgel was further spray dried to obtain the Eu microcapsule. The physicochemical properties, microstructure, and thermodynamic properties of the microcapsules were studied. Results showed that the microcapsule powders prepared from the high-energy emulgel (HEG) contained less water and appeared no caking. But the microcapsule prepared from the low-energy emulgel (LEG) showed more regular shape. After dissolution, the reconstructed emulgel was investigated in terms of texture, microstructure, thermal properties, and preservation effects. Reconstructed emulgel from both LEG and HEG showed significantly higher gel strength but similar thermal properties comparing to the fresh one. In addition, meat covered with reconstructed emulgel showed less weight loss and more stable pH and total volatile basic nitrogen (TVB-N) value, as well as stronger resistance to bacterial reproduction, especially against lactic acid bacteria. The results indicated that the microencapsulation of Eu through gelatin-based emulgel might be a convenient and effective technology for refrigerated meat preservation.
研究领域:
食品科学
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生物技术
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2020
·Vol. 104
·期 4
·1902-1907
·
IF 3.502
Yu Zheng,Xudong Luo,Jiegang You,Ting Li,Qingdong Hou
Ceramic foam materials with highly porous microstructure are playing vital role in increasing areas, especially for those with requirements for open channels and superior specific surface area. In this work, a simple and versatile approach to prepare ceramic foams with open pores has been proposed, that is gelation of boehmite nanoparticle-assembled emulsions. Notably, hierarchical porous microstructure with open channels and uniform pore structure has been built. High specific surface area up to389.4 m 2 /g is attainable, making it excellent adsorption material when combining the merit of hierarchical pore structure. Furthermore, lattice-shaped ceramics are prepared via direct ink writing gelled emulsion, displaying the potential of forming lightweight material with complex shape and designable macrostructure. The three-dimensional (3D) printed foams exhibit multiple open pores, which cover length scale from mm scale, to μm scale and nm scale, making them promising materials in several fields like adsorption and gas filtrations, etc.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2022
·Vol. 15
·期 4
·1835-1848
·
IF 8.307
Wenjing Xie,Han Li,Houqiang Yu,Hongfu Zhou,Anran Guo,Qing Yao,Ling Zhang,Yongsheng Zhao,Hongan Tian,Ling Li
Iodized oil has an excellent X-ray imaging effect, but it shows poor embolization performance. When used as an embolic agent, it is easily washed off by the blood flow and eliminated from the body. Therefore, it is essential to use iodized oil in combination with solid embolic agents such as gelatin sponge or to perform multiple embolization procedures to achieve the therapeutic effect. In the present study, a poly(N-isopropyl acrylamide)-co-acrylic acid (PNCAA) temperature-sensitive nanogel was synthesized by emulsion polymerization; the nanogel was then emulsified with iodized oil to prepare a thermosensitive iodized oil Pickering gel emulsion (TIPE). The oil–water (O/W) ratio of an O/W emulsion system can reach 4 : 6. When injected into the body, TIPE transforms into a nonflowing coagulated state at physiological temperature; the iodized oil is locked in the emulsion structure, thereby achieving local embolization and continuous imaging effects, which not only retain the X-ray imaging effect of the iodized oil but also improve its embolization effect. Subsequently, we further evaluated renal artery embolization in a normal rabbit renal artery model, and the results showed that TIPE shows a long-term conformal embolization performance and excellent long-term X-ray imaging ability.
研究领域:
医学材料学
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介入放射学
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产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 19
·6542
·
IF 4.927
Jialing Chen,Qing Li,Ruijie Du,Xinke Yu,Zhili Wan,Xiaoquan Yang
Responsive dual-structured emulsions and gel emulsions have attracted more and more attention due to their complex microstructures, on-demand responsive properties, and controlled release of active cargoes. In this work, the effect of monoglyceride (MG)-based oil phase structuring on the formation and stability, structural properties, and thermoresponsive and cargo release behavior of gel emulsions stabilized by glycyrrhizic acid (GA) nanofibrils were investigated. Owing to the formation of GA fibrillar networks in the aqueous phase and MG crystalline networks in the oil phase, a stable dual-structured gel emulsion can be successfully developed. The microstructure of the dual-structured gel emulsions largely depended on the concentration of MG in the oil phase. At low MG concentrations (1–2 wt%), the larger formed and lamellar MG crystals may pierce the interfacial fibrillar film, inducing the formation of partially coalesced droplets. In contrast, at high MG concentrations (4 wt% or above), the smaller MG crystals with enhanced interfacial activity can lead to the formation of a bilayer shell of GA nanofibrils and MG crystals, thus efficiently inhibiting the interfacial film damage and forming a jamming structure with homogeneously distributed small droplets. Compared to pure GA nanofibril gel emulsions, the GA−MG dual-structured gel emulsions showed significantly improved mechanical performance as well as good thermoresponsive behavior. Moreover, these stable GA−MG gel emulsions can be used as food-grade delivery vehicles for encapsulating and protecting hydrophobic and hydrophilic bioactive cargoes. They also have great potential as novel and efficient aroma delivery systems showing highly controlled volatile release. The dual-structured emulsion strategy is expected to broaden the applications of natural saponin GA-based gel emulsions in the food, pharmaceutical, and personal care industries.Keywords:glycyrrhizic acid;monoglyceride;dual-structured gel emulsions;thermoresponsive;controlled release
研究领域:
食品科学
·
药学
·
个人护理产品
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产品关联
DOI
PubMed
高影响因子
Soft Matter
·
2023
·Vol. 19
·期 34
·6604-6611
·
IF 3.4
Min Xue,Gang Wang,Enrui Lin,Ping Sun,Beibei Li,Pengna Li,Shiying Hua
In the research of gel emulsions, it is a great challenge to develop a new method for fabrication of gel emulsions and utilize them in preparing novel porous materials containing metal complexes. In this work, we proposed to use coordination self-assemblies of two building blocks, organic ligands and metal ions, as stabilizers to prepare gel emulsions, which could be used as templates to prepare porous materials containing metal complexes. Aromatic carboxylic ligands CDCn (n = 4, 6, 8, and 10) containing cholesterol groups were designed and synthesized, and were used as organic ligands to fabricate new W/O gel emulsions through the coordination self-assembly with Tb3+/Eu3+ at the oil–water interface. The gel emulsions based on CDC6 possess injection molding properties, which were rarely seen in conventional gel emulsions. EDX mapping and XPS and FTIR analyses revealed that the coordination self-assembly of CDC6 and Tb3+ at the oil–water interface was the main driving force for the gel emulsion formation. CDC6/Tb3+/styrene/H2O gel emulsions could be further used as templates to prepare low-density porous metal complex/polymer composites with typical luminescence emissions of terbium complexes. This work extends the method for preparation of gel emulsions and develops a novel approach to obtain porous materials containing metal complexes.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
Geoenergy Science and Engineering
·
2023
·
IF 0
Xianbin Huang,Fengbao Liu,Pengxin Zhang,Zhenzhen Wei,Jinsheng Sun,Kaihe Lv,Jian Li
Fractured formations are complex formations often encountered during oil and gas drilling. Conventional methods such as plugging formation fractures and pores, improving cutting-carrying efficiency, and inhibiting hydration of cements cannot effectively solve the problem of wellbore instability in fractured formations. In this paper, an adhesive microgel latex (MGL) was prepared to improve the cementing strength of fractured formations. The morphology and thermal property were analyzed by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), etc. The plugging effect of MGL was then studied by visualized plugging experiments and high temperature and high pressure (HTHP) plugging experiments. The evaluation methods for strengthening fractured formation were established, including immersion test, single lap test and compressive strength test, and applied to evaluate MGL. The experimental results show that MGL were spherical particles with a median particle size of 38.9 μm and a glass transition temperature of 61.98 °C. MGL could effectively decrease drilling fluid intrusion and plug fractured formations. Wellbore strengthening experiment showed that MGL could enhance the cementing strength of fractured formations. MGL greatly improved the tensile shear strength between core pieces and cementation strength of the fractured formation. After treatment of MGL, the tensile shear strength between core pieces increased by 81.2% compared to asphalt, and the compressive strength substantially increased for both wet and dry sand cores. The mechanism analysis suggests that the adsorption between MGL and rock matrix and the self-adhesion among MGL particles are responsible for wellbore strengthening. This paper innovatively proposes the use of adhesive particles to enhance wellbore stability in fractured formations.
研究领域:
石油工程
·
材料科学
✓ 已验证
DOI
FOOD CHEMISTRY
·
2023
·
IF 8.8
Ziying Liao,Lulu Dong,Muwen Lu,Songbai Zheng,Yong Cao,Michael Rogers,Yaqi Lan
In this study, we reported a facile strategy to produce an interfacial crystallized oleogel emulsion for improved thermal stability. The interfacial crystallization of ceramide (non-interfacial active oleogelator) was achieved by addition of a surface active compound, which was demonstrated by interfacial rheology tests and polarized light microscopy. For successfully prepared interfacial crystallized emulsions, smaller particle size was observed when the gelator concentration was lower. However, better thermal stability was achieved when oleogelator concentration was higher than 1 wt%. Results from differential scanning calorimetry, X-ray diffraction and Fourier transform infrared spectroscopy suggested that the interfacial adsorption of ceramide was due to its co-crystallization with the emulsifier driven by hydrogen bonds formed by multiple sites. It provided appropriate crystallinity and steric repulsion for oleogel emulsions against oil droplet coalescence during heating process. This strategy greatly enriches oleogel emulsion formulations and their potential applications in food products involved with thermal treatment.
研究领域:
食品科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2021
·Vol. 26
·期 21
·6526
·
IF 4.412
Caiyun Lin,Yuying Li,Weishan Tang,Shufeng Zhou,Xiaoping Rao
Supramolecular hydrogels have attracted great attention due to their special properties. In this research, bio-based supramolecular hydrogels were conveniently constructed by heating and ultrasounding two components of dehydroabietic acid with a rigid tricyclic hydrophenanthrene skeleton and morpholine. The microstructures and properties of hydrogels were investigated by DSC, rheology, SAXS, CD spectroscopy, and cryo-TEM, respectively. The critical gel concentration (CGC) of the hydrogel was 0.3 mol·L−1and the gel temperature was 115 °C. In addition, the hydrogel showed good stability and mechanical properties according to rheology results. Cryo-TEM images reveal that the microstructure of hydrogel is fibrous meshes; its corresponding mechanism has been studied using FT-IR spectra. Additionally, oil-in-water gel emulsions were prepared by the hydrogel at a concentration above its CGC, and the oil mass fraction of the oil-in-water gel emulsions could be freely adjusted between 5% and 70%. This work provides a convenient way to prepare bio-based supramolecular hydrogels and provides a new method for the application of rosin.Keywords:bio-based;supramolecular hydrogels;dehydroabietic acid;oil-in-water;gel emulsions
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Zhaohua Huang,Baozhong Guo,Junhui Pan,Deming Gong,Guowen Zhang
This research offers valuable understanding of the structural and functional attributes of water-in-oleogel emulsions (OGEs) containing proanthocyanidins and curcumin, highlighting the relationship between their rheological characteristics and gastrointestinal fate. By altering emulsifier types (PGPR, lecithin, zein, or none), OGEs demonstrate unique mechanical characteristics and digestion profiles. Microscopic observations confirmed emulsion formation, with polarized light microscopy revealing interfacial crystallization in OGE-zein. Interfacial tension analysis indicated synergistic interactions between carnauba wax and emulsifiers. Rheological analysis showed that PGPR and lecithin weakened the crystal network, while zein enhanced its density and stability. In vitro digestion revealed that the emulsions with PGPR and lecithin had lower bioaccessibility of proanthocyanidins and curcumin, whereas OGE-zein showed the highest free fatty acids release and bioaccessibility. Correlation analysis indicated that stronger oleogel matrices improve the bioaccessibility of co-encapsulated nutrients. These results provide insights for designing functional OGEs for low-fat foods and bioactive compound delivery systems.
研究领域:
食品科学
·
营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2024
·
IF 3.3
Dian Zhang,Ruimin Zhong,Ziying Liao,Xin Wang,Pengcheng Xiang,Ao Zhang,Nan Su,Yong Cao,Yaqi Lan
BACKGROUND Quercetin is a flavonoid compound with numerous bioactivities. However, the low solubility, easy degradation and low bioaccessibility limit its application. In this study, a novel interfacial crystallized oleogel emulsion was fabricated, where beeswax was used as the oleogelator, for quercetin encapsulation with enhanced stability and bioaccessibility. RESULTS The process of interfacial crystallization was investigated using interfacial rheology and polarized microscopy, with a positive correlation between crystal density and beeswax content in the oil phase. Emulsion stability was directly linked to beeswax concentration in the oil phase, with 100 mg g −1 showing enhanced stability under storage, UVB light exposure and ionic conditions. Beeswax addition significantly increased the quercetin loading capacity of the emulsion; particularly, at a 200 mg g −1 beeswax concentration, the loading capacity was improved by 285.55%, and the environmental stability was enhanced against UV light and Ca 2+ . Ultimately, in vitro simulated digestion experiment indicated improved bioaccessibility of quercetin. CONCLUSIONS This strategy significantly enriched the formulation of oleogel emulsion and its potential applications in delivering bioactive ingredients with high environmental vulnerability. © 2024 Society of Chemical Industry.
研究领域:
食品科学
·
制药技术
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Jianfei Liu,Min Li,Pei Wang,Kaiqiang Liu,Yu Fang
In this work, a series of porous polymeric monoliths with densities as low as ∼0.060 g/cm 3 were prepared by employing some newly created gel-emulsions as templates, of which acidified cotton was utilized for the first time as an efficient stabilizer. The monoliths as obtained could be purified by simple washing and dried at ambient conditions. Moreover, they showed strong affinity to particulate matters (PMs). Adsorption tests revealed that the saturated adsorption capacity of one of the monoliths (M8) to PM 2.5 could reach ∼520 mg/g and the removal efficiency exceeds 93% at ambient conditions, a prominent result considering the collective advantages of the monolith. Importantly, the monoliths after adsorption can be recovered and re-used via simple washing and drying. More importantly, the stabilizer as created is so efficient that 0.1% ( w / v , cotton to the volume of the continuous phase) is enough to stabilize the gel emulsions. Considering the excellence in performance, low cost in preparation, and convenience in regeneration, we believe that the monoliths are strong candidates for real-life applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Yang Yang,Wu Peng,Hao Zhang,Hao Wang,Xiaoxuan He
Microscale crosslinked polymeric hydrogels, termed microgels, have attracted considerable attention as enhancing oil recovery (EOR) agents due to their favorable in-depth fluid diversion effect. However, the oil/water interfacial behavior of microgels remains unclear, limiting the comprehensive understanding of the EOR mechanism. In this study, the oil/water interfacial behavior of microgel powder (MP) and microgel emulsion (ME) was studied through emulsification tests and interfacial tension (IFT) measurements. Despite the similar properties of the microgel particles, such as morphology, size distribution and zeta potential , ME exhibited better emulsification performance than MP in deionized (DI) water due to the presence of additional surfactants in ME. However, since the competitive adsorption between the microgel particles and surfactants on the oil/water interface changed with salinity, ME exhibited a higher emulsion volume but lower emulsion stability than MP in brine. Moreover, W/O and O/W emulsions were formed in DI water, but only an O/W emulsion was formed in brine for ME. Furthermore, MP exhibited better IFT reduction performance in brine due to the weaker steric hindrance and tighter adsorption layer on the oil/water interface. In contrast, ME showed better IFT reduction performance in DI water owing to the interaction between the microgel particles and the surfactants. Considering that MP is usually used in the laboratory while commercial microgels are provided in the form of ME, the different oil/water interfacial behaviors of MP and ME may result in an inconsistent understanding of the EOR mechanism in laboratory study and field application.
研究领域:
石油工程
·
材料科学
✓ 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）