International Journal of Food Engineering
·
2024
·Vol. 20
·期 6
·439-449
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IF 1.6
Wenxin Jiang,Hefan Zhang,Xinwei Xiong,Fengting Li,Wei Lu,Bing Hu,Zhiming Gao,Yuehan Wu,Dan Yuan,Yanlei Li
Using non-amphiphilic polysaccharide to stabilize oil-in-water emulsions is still a challenge in food industry. Polysaccharide microgels showed emulsifying capacity, however, the stability of the formed emulsions is far from the requirements of the food industry. In this work, agarose microgel/Tween-20 suspensions were prepared and further employed in oil-in-water emulsion stabilization. Focuses were taken on the impact of Tween-20 on the emulsifying properties of agarose microgels. Results suggested that Tween-20 could complex with agarose microgels, and microamounts of Tween-20 (0.02 wt%) could apparently improve the emulsifying performance of microgels. Dynamic interfacial pressure and interfacial adsorption of microgels indicated that appropriate amount of Tween-20 (≤0.04 wt%) could benefit the interfacial adsorption of agarose microgels, while excessive Tween-20 (≥0.08 wt%) could compete with agarose microgels for adsorption sites on oil/water interface. Results of this work supporting that surfactant complexing could be a promising solution to prepare polysaccharides based Mickering emulsions.
研究领域:
食品科学
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高分子化学
·
界面科学
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DOI
高影响因子
Nanoscale
·
2015
·Vol. 8
·期 1
·517-528
·
IF 7.394
Wing-Fu Lai,Ho Cheung Shum
Proteins have emerged as an important class of therapeutic agents due to their high specificity in their physiological actions. Over the years, diverse protein carriers have been developed; however, some concerns, such as the relatively low loading efficiency and release sustainability, have limited the efficiency of protein delivery. This study reports the use of hydrogel nanoparticles based on a novel copolymer, poly(ethylenimine)-graft-polysorbate (PEIP), as effective protein carriers. The copolymer is fabricated by grafting poly(ethylenimine) (PEI) with polysorbate 20 using carbonyldiimidazole chemistry. Its cytotoxicity is much lower than that of unmodified PEI in RGC5 and HEK293 cells. In comparison with nanoparticles formed by unmodified PEI, our nanoparticles are not only more efficient in cellular internalization, as indicated by the 5- to 6-fold reduction in the time they take to cause 90% of cells to exhibit intracellular fluorescence, but also give a protein loading efficiency as high as 70–90%. These, together with the salt-responsiveness of the nanoparticles in protein release and the retention of the activity of the loaded protein, suggest that PEIP and its hydrogel nanoparticles warrant further development as protein carriers for therapeutic applications.
研究领域:
生物材料学
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药物递送系统
·
分子生物学
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产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2023
·
IF 10.7
Zhibin Chen,Wenbo Wang,Jie Xiao
The interfacial-bulk phase distribution behavior of antioxidants is closely related to their anti-oxidative efficiency. In this study, the dynamic distribution behavior of gallic acid (GA) in a zein particles-Tween 20 co-stabilized emulsions (CPE) and its impact on the oxidative stability of CPE were elucidated via a combined experimental and Dissipative Particle Dynamics (DPD) method. As the concentration of TW20 increased, the competitive displacement of Zp from the interface was observed. Consequently, the interfacial loading of Zp decreased, leading to a corresponding decrease in the content of GA on the interface. The study's pseudo-phase model provided quantitative data indicating that the interfacial partition percentage of GA decreased from 70.72% to 48.63%, while the interfacial adsorption rate of GA decreased from 0.039 to 0.015. A notable discovery was made in emulsions solely stabilized by Zp, where 17.58% of GA was lost at the interface through free diffusion. However, in CPE, this loss was significantly reduced to 9.12%. This reduction was achieved by maintaining an appropriate concentration of TW20 (ranging from 0.19 to 1.91 mM), which facilitated a higher interfacial distribution of GA in CPE. Additionally, inhibiting the free diffusion of antioxidants at the interface, as indicated by the diffusion coefficients ranging from 20.51 to 4.45, contributed to the improved oxidative stability of the CPE. The study not only provided insights into the phase-interface distribution behavior of antioxidants in emulsions but also offered in-situ determination methods to guide the interfacial engineering of emulsions.
研究领域:
食品科学
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化学工程
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DOI
高影响因子
Analytical Methods
·
2020
·Vol. 12
·期 11
·1469-1477
·
IF 2.596
Huihui Liu,Zeyu Gan,Chao Song,Binbin Xu,Zhiyong Guo,Xi Zhou,Zhiwei Chen
In this work, we designed a simple and intelligent method to detect cyromazine. After original citrate stabilized AuNPs were modified with Tween 20, they could remain stable under complex conditions of different pH values (5.5–8.0) and high ionic strength. However, after the addition of cyromazine, ligand exchange occurred with the citrate ion on the surface of Tween 20–AuNPs, resulting in instability and aggregation of Tween 20–AuNPs. At the same time, a new absorption peak appeared near 630 nm, and the color changed from red to blue. This method has been successfully applied to the detection of cyromazine in milk and cucumber. Furthermore, this method was used in conjunction with a smartphone to intelligently detect and analyze cyromazine at concentrations as low as 0.04 mg kg−1.
研究领域:
分析化学
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食品科学
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环境监测
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产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2021
·
IF 9.147
Junmeng Lu,Xinglian Xu,Xue Zhao
In the current study, the interfacial rheological properties of alkali pH-shifted MP under pH 11.0 → 7.0, pH 11.5 → 7.0 and pH 12.0 → 7.0 have been firstly investigated. The molecular weight and microstructure of myofibrillar protein (MP) treated by alkali pH-shifting were investigated by gel-permeation chromatography (GPC) and transmission electron microscopy (TEM). Results indicated a swollen, organized and aggregated structure of refolded MP. Overall, the molecular change in refolded MP led to faster protein adsorption towards the O/W interface, enhanced intermolecular interaction between adsorbed proteins and improved elasticity of interfacial film compared to native MP. After β-mercaptoethanol (β-ME) was added, the advantage of refolded MP in diffusion phase no more existed due to the disruption of aggregation and decreased molecular size, besides the penetration and rearrangement were interfered because the disruption of disulfide bond inhibited the formation of interfacial protein layers. With the protein concentration increasing, MP molecules crowding at O/W (oil in water) surface limited the development of a highly elastic network. As revealed by Tween 20 displacement, MP layers with higher interfacial elasticity were more resistant to displacement. Moreover, after displacement the coalescence stability of emulsion droplet was enhanced but the mechanical strength of interfacial MP layer was reduced. Altogether MP (0.04 or 0.2 mg/mL) treated by pH 11.0 → 7.0 exhibited the best adsorption performance and interfacial properties, which were important in stablizing emulsions. Thus, interfacial behavior regulation by alkali pH-shifting may be a applicable process for developing meat protein-based emulsions in food industry.
研究领域:
食品科学
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蛋白质化学
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胶体科学
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DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2024
·
IF 3.8
Sihui Ding,Yu Xu,Song Xue,Ang Li,Qi Zhang
Capillary electrophoresis (CE) has conventionally been classified into aqueous and non-aqueous categories based on the types of buffer solvents employed. Traditionally, non-aqueous CE has always been associated with the use of organic solvents, which are considered hazardous to health and environmentally detrimental. In this work, we introduce deep eutectic solvents (DESs) as CE separation media for the first time, presenting a novel and environmentally friendly approach to CE separations. The DES employed consists of proline and urea (Proline:Urea, PU), both of which are naturally occurring compounds that are readily available, cost-effective, and environmentally benign. Various fundamental aspects of the DES-type CE media were investigated, including thermal property, viscosity, electroconductivity, Joule heating effect, and compatibility with detectors. A simulated complex mixture of ten naphthalene-based compounds with varied charges and sizes was separated using the DES-based medium in capillary zone electrophoresis (CZE) mode. Moreover, we also established a DES-based micellar electrokinetic chromatography (MEKC) system utilizing Tween-20 as the surfactant. Six structurally similar naphthalene derivatives (isomers) that couldn't be resolved by CZE were effectively separated due to their strong hydrophobic interaction with Tween-20 micelles within the DES medium. Given that DESs are “designer” solvents with highly tunable properties and environmentally friendly characteristics, this study demonstrates the potential of employing DESs as an alternative to organic solvents for greener CE separations.
研究领域:
分析化学
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环境科学
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分离科学
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DOI
PubMed
高影响因子
Food Science & Nutrition
·
2020
·Vol. 8
·期 7
·3099-3109
·
IF 1.797
Xin Li,Zong-Cai Tu,Xiao-Mei Sha,Yun-Hua Ye,Zhong-Ying Li
Different surfactants (lecithin, Tween-20, and Tween-80) were added in composite film during the preparation. Flavor, antimicrobial activity, and physical properties of ginger essential oil -gelatin film were investigated, in order to study the effect of surfactants on the properties of film. The flavor of GEO was not detected in the film prepared with Tween-20 and film prepared with Tween-80, and these two films exhibited stronger antimicrobial activity; film prepared with lecithin possessed higher value in thickness, elongation at break, water solubility, Δ E and opacity, lower value in water vapor property, and tensile strength; attenuated total reflectance-Fourier transform infrared spectrum results suggested, Tween-20 and Tween-80 enhanced the strength of covalent bond, and lecithin weakened the strength of hydrogen bond; and the result of scanning electron microscope showed that Tween-20 and Tween-80 improved the dispersion of oil droplets in film. Therefore, this study suggested that surfactants had an influence on the physical properties and molecular structure of a resulting film; in addition, Tween-20 and Tween-80 could reduce the flavor of GEO in film, improving the antimicrobial activity of film.
研究领域:
材料科学
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食品科学
·
化学
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产品关联
DOI
PubMed
高影响因子
Food Biophysics
·
2022
·Vol. 17
·期 4
·545-556
·
IF 3.34
Lv Danyu,Dai Chenming,Wang Muyun,Chen Huaiqiong,Guan Yongguang
Aqueous and photo stability of bixin are challenges in practical applications. Herein, transparent nanoemulsion can be self-emulsified to improve 9'- cis -bixin aqueous and photo stability. The 0.25 g carvacrol with 0.5% w/w 9'- cis -bixin, 2.08 g 12-% soybean lecithin, 2.25 g Tween 20, and 0.42 g water were mixed and stored overnight to fabricate transparent oil-in-water (O/W) nanoemulsion. The O/W nanoemulsion droplets had an average dimeter of 12.03 nm and equivalent spherical diameter of 6.78 nm. Photo stability of 9'- cis -bixin was improved after encapsulating in nanoemulsion droplets, demonstrated by significant improvement of 9'- cis -bixin degradation rate constant under ultraviolet. Nanoemulsion droplets significantly improved cell uptake of 9'- cis -bixin especially at the first 15 min after cocultivation of Caco-2 cells and 9'- cis -bixin encapsulated nanoemulsion. This study provides a comprehensive understanding of bixin protection by nanoemulsion fabricated by a self-emulsification method with potential cellular uptake.
研究领域:
药学
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纳米技术
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食品科学
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光化学
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产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2018
·
IF 5.089
Jianhua Yi,Jianqin Ning,Zhenbao Zhu,Leqi Cui,Eric A. Decker,David Julian McClements
In this study, the interfacial composition of protein-stabilized emulsions was manipulated by adding a small molecule surfactant to induce displacement of the adsorbed protein. The rate and extent of lipid and protein oxidation was then measured for emulsions with different interfacial compositions. Lipid and protein co-oxidation were studied in walnut oil-in-water (O/W) emulsions (5% v/v oil, 1.0% w/v protein, 0–1.0% w/v Tween 20, pH 7). The interfacial tension, protein surface load, surface potential, and mean particle size of the emulsions decreased as the surfactant concentration increased, suggesting that caseinate was displaced by Tween 20. Emulsions stabilized solely by caseinate exhibited relatively slow lipid oxidation when incubated in the dark at 45 °C for up to 8 days, as determined by lipid hydroperoxides and 2-thiobarbituric acid-reactive substances (TBARS). In contrast, the caseinate itself was rapidly oxidized, as shown by carbonyl formation, intrinsic fluorescence loss, and electrophoresis measurements. Competitive displacement of adsorbed caseinate by Tween 20 reduced protein oxidation but promoted lipid oxidation, indicating that adsorbed proteins were more sensitive to oxidation themselves but also more efficient at protecting lipids from oxidation than non-adsorbed ones. These results demonstrate the important role that interfacial composition plays on the oxidative stability of food emulsions containing mixtures of emulsifiers.
研究领域:
食品科学
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化学
·
胶体与表面科学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Wei Gao,Aoyun Mo,Jie Jiang,Yuqing Liang,Xiaomu Cao,Defu He
Microplastics (MPs) pose a potential risk to aquatic ecosystems , and there is a growing demand to alleviate the contamination of MPs. Here, we introduce cationic-modified starch (CS) as an eco-friendly bio-coagulant for removing MPs from water. CS with varying degrees of substitution was synthesized and characterized, and its performance in removing MPs was evaluated under different MP sizes, types, and aging, as well as various water conditions. The results indicated that CS efficiently removed MPs, achieving an average removal rate of 65.33 % for polystyrene particles, with higher removal rates for larger, high-density, and aged MPs. The efficiency of CS remained consistent across a wide range of water pH values, but was significantly reduced in the presence of kaolin clay or/and humic acid . The removal efficiency of CS for MPs was enhanced by the non-ionic surfactant, Tween 20, but inhibited by the anionic surfactant, cetyltrimethylammonium bromide. In addition, CS could concurrently remove both MPs and phenanthrene , as a typical water contaminant. Moreover, the applicability of CS was demonstrated in natural water samples from the Ecological Demonstration Zone of the Yangtze River Delta, China, with an average removal rate of 60.13 ± 3.15 %. Taken together, this study offers an environmentally friendly and cost-effective approach for the removal of MPs from water, demonstrating CS has significant application potential as a sustainable solution to mitigate microplastic pollution.
研究领域:
环境科学
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水处理
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材料科学
·
污染控制
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2018
·
IF 3.412
Zhenbao Zhu,Cui Zhao,Jianhua Yi,Ning Liu,Yuangang Cao,Eric A. Decker,David Julian McClements
The impact of interfacial composition on lipid and protein co-oxidation in oil-in-water emulsions containing a mixture of proteins and surfactants was investigated. The emulsions consisted of 5% v/v walnut oil, 0.5% w/v whey protein isolate (WPI), and 0 to 0.4% w/v Tween 20 (pH 3 and pH 7). The protein surface load, magnitude of the ξ-potential, and mean particle diameter of the emulsions decreased as the Tween 20 concentration was increased, indicating the whey proteins were displaced by this nonionic surfactant. The whey proteins were displaced from the lipid droplet surfaces more readily at pH 3 than at pH 7, which may have been due to differences in the conformation or interactions of the proteins at the droplet surfaces at different pH values. Emulsions stabilized by whey proteins alone had relatively low lipid oxidation rates when incubated in the dark at 45 °C for up to 8 days, as determined by measuring lipid hydroperoxides and 2-thiobarbituric acid-reactive substances (TBARS). Conversely, the whey proteins themselves were rapidly oxidized, as shown by carbonyl formation, intrinsic fluorescence, sulfhydryl group loss, and electrophoresis measurements. Displacement of whey proteins from the interface by Tween 20 reduced protein oxidation but promoted lipid oxidation. These results indicated that the adsorbed proteins were more prone to oxidation than the nonadsorbed proteins, and therefore, they could act as better antioxidants. Protein oxidation was faster, while lipid oxidation was slower at pH 3 than at pH 7, which was attributed to a higher antioxidant activity of whey proteins under acidic conditions. These results highlight the importance of interfacial composition and solution pH on the oxidative stability of emulsions containing mixed emulsifiers.
研究领域:
食品科学
·
化学
·
生物技术
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产品关联
DOI
PubMed
高影响因子
COLLOID AND POLYMER SCIENCE
·
2017
·Vol. 295
·期 7
·1223-1232
·
IF 1.723
Yao Jia,Cao Zhihai,Chen Qun,Zhao Shuning,Zhang Yushang,Qi Dongming
Poly(styrene- co -methyl methacrylate) (poly(St- co -MMA))/SiO 2 nanocomposite particles (NCPs) were prepared through miniemulsion polymerization by using polyoxyethylene (20) sorbitan monolaurate (commercial name: Tween-20) as the sole surfactant. The number fraction of poly(St- co -MMA)/SiO 2 NCPs in the as-synthesized emulsion could exceed 90% in some well-designed systems, indicative of high efficiency of poly(St- co -MMA)/SiO 2 NCP formation. Each poly(St- co -MMA)/SiO 2 NCP contained many SiO 2 NPs, thus exhibiting a high composite efficiency between the poly(St- co -MMA) and SiO 2 NPs. The mechanistic investigation indicated that the enhanced efficiency of the poly(St- co -MMA)/SiO 2 NCP formation is due to the improved homogeneity in the distribution of SiO 2 among the monomer droplets and the effectively suppressed nucleation of plain monomer droplets through controlled coalescence of the monomer droplets with the latex particles.
研究领域:
材料科学
·
化学工程
·
高分子化学
·
纳米技术
✓ 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）