FOOD RESEARCH INTERNATIONAL
·
2024
·
IF 7
Mengzi Nie,Jiaxin Li,Ran Lin,Xue Gong,Bin Dang,Wengang Zhang,Xijuan Yang,Lili Wang,Fengzhong Wang,Li-Tao Tong
In this study, five C18 fatty acids (FA) with different numbers of double bonds and configurations including stearic acid (SA), oleic acid (OA), elaidic acid (EA), linoleic acid (LA), and α-linolenic acid (ALA), were selected to prepare highland barely starch (HBS)-FA complexes to modulate digestibility and elaborate the underlying mechanism. The results showed that HBS-SA had the highest complex index (34.18 %), relative crystallinity (17.62 %) and single helix content (25.78 %). Furthermore, the HBS-C18 FA complexes were formed by EA (C18 FA with monounsaturated bonds) that had the highest R 1047/1022 (1.0509) and lowest full width at half-maximum (FWHM, 20.85), suggesting good short-range ordered structure. Moreover, all C18 FAs could form two kinds of V-type complexes with HBS, which can be confirmed by the results of CLSM and DSC measurements, and all of them showed significantly lower digestibility. HBS-EA possessed the highest resistant starch content (20.17 %), while HBS-SA had the highest slowly digestible starch content (26.61 %). In addition, the inhibition of HBS retrogradation by fatty acid addition was further proven, where HBS-SA gel firmness (37.80 g) and aging enthalpy value were the lowest, indicating the most effective. Overall, compounding with fatty acids, especially SA , could be used as a novel way to make functional foods based on HBS.
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
SEPARATION SCIENCE AND TECHNOLOGY
·
2025
·
IF 2.3
Caidi Zhang,Wanchuan Shang,Xiaoning Zhang,Xueli Huang,Xueying Wang
Cresol is an important phenolic compound derived primarily from low-temperature coal tar. The presence of m/p-cresol increases the unsaturated bonds in coal tar. This increases the hydrogen consumption in the hydrogenation process. Separation and further purification of m/p-cresol can improve the value of coal tar. The boiling points of m-cresol and p-cresol are similar and therefore difficult to separate. It has become a major problem in the development of crude phenol refining. In this work, a novel complexing agent, hexamethylenetetramine, was used to complex and separate cresols. The effects of crystallization temperature, complexing agent dosage, solvent dosage and crystallization time were investigated. The process was optimized using response the surface methodology. As a result, the purity of m-cresol could reach more than 94.2% and the yield reached more than 30.4%, indicating that the process could effectively separate the mixture of m-cresol and p-cresol.
研究领域:
化学工程
·
煤化工
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Wenqing Zhao,Wei Liang,Qian Lin,Jie Zeng,Haiyan Gao,Wenhao Li
This study systematically evaluated the impact of different fatty acids (LA, lauric acid; MA, myristic acid; PA, palmitic acid; SA, stearic acid; 5 % w /w) with soybean isolate protein (SPI, 10 % w/w) on the structural and anti-retrogradation properties of mung bean starch gels. The results showed that fatty acids and SPI interacted with starch during the pasting process, disrupted the integrity network, reduced the order and viscoelasticity of the system, and depended on the length of carbon chains. Notably, under the emulsification of SPI, long-chain fatty acids (e.g., palmitic acid 64.33 % and stearic acid 65.57 %) formed complexes with starch, significantly limiting their release. During 30 days of storage, SPI and fatty acids synergistically retained moisture (e.g., 18 % lower syneresis in ternary gels vs. control starch gels) and reduced chromatic aberration (ΔE < 5.7) and hardness (282.06 g–388.07 g). This was favorable for maintaining the quality of the gelled food during its shelf life and promoted the precise application of fatty acids in the gel system.
研究领域:
食品科学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2023
·
IF 8.7
Qingguang Bao,Nan Li,Bing Wang,Zhenguo Song,Bin Luo,Shan Cheng,Jingyao Feng,Mengting Li,Wenzhi Li,Yousi Chen,Xigao Jian
High-speed and heavy-duty equipment transmission or rotation systems have experienced a significant increase in demand for wear-resistant, self-lubricating resin matrix composites. However, the interfacial interaction between the fillers and the matrix is nonetheless weak due to the fact that the composites are multi-component systems. This weak interaction negatively impacts wear resistance in practical applications. In this paper, a one-step modification method of multiple fillers based on coupling agent compounding by RSM design is proposed. The resulting PPESK composites exhibit excellent thermal (T 5wt% = 517.6 °C), mechanical (Rockwell hardness = 118 HRR), and wear (ω = 0.72 × 10 −15 m 3 /Nm) properties. In addition, PPESK composite bearings were prepared, which showed lightweight advantages, exhibited outstanding tribology performance (μ = 0.079, ω = 0.52 × 10 −15 m 3 /Nm), and demonstrated excellent media resistance (Swelling degree (90 days, 25 ℃) = 0.45 %) in Jet fuel No.3. Therefore, these bearings have great application prospects in the field of aero-engine bearings.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD SCIENCE
·
2022
·Vol. 87
·期 2
·623-635
·
IF 3.693
Fan Xie,Hui Zhang,Zhiqiang Xiong,Yan Wu,Lianzhong Ai
In this work, we investigated the effects of sucrose (0%–30%, w/w) on the pasting properties, retrogradation, freeze–thaw stability, texture, and the possible interaction with corn starch–tamarind seed polysaccharide (CS–TSP) mixtures. Sucrose increased the gelatinization temperature (from 76.4 ± 0.1 to 87.6 ± 0.0°C), peak viscosity (from 3358.0 ± 1.4 to 7732.5 ± 44.5 cP), and final viscosity (from 3514.0 ± 31.1 to 7724.5 ± 142.1 cP) of CS–TSP mixtures. Further, sucrose limited the increase in the storage modulus of the mixture pastes, transfer of bound water to free water, and water syneresis during the freeze–thaw process. Additionally, sucrose resulted in a more complete gel structure with stronger resistance. Scanning electron microscope and fluorescence labeling analysis showed that the presence of sucrose helped in tight entanglement or cross-link between amylose or between amylose and TSP. Thus, these results in this study could help to improve physicochemical properties of starch-based products, such as glue pudding and other starch desserts.
研究领域:
食品科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2020
·
IF 7.053
Yueping Ding,Jie Wan,Chengmei Liu,Xiaofei Shi,Xue Xia,Sangeeta Prakash,Xiao Zhang
In order to explore the application of a new starch source isolated from Castanopsis Sclerophylla , the retrogradation properties and in vitro digestibility of C. Sclerophylla starch (CaS) were investigated for the first time in this study. The Chain-length distribution (CLD) of amylopectin from CaS was characterized. The retrogradation behavior of CaS was measured using rapid viscosity analysis (RVA), rheometry , texture profile analysis (TPA), and differential scanning calorimetry (DSC), and the results compared with those of corn starch (CS). Cas amylopectin displays a lower proportion of short chains (A-chains, 13.31%) and higher proportion of long chains (B3-chains, 31.70%) when compared to corn amylopectin. CaS has a high rate of retrogradation, with higher setback, storage modulus (G′), and lower Tan δ values than CS in short-term retrogradation. CaS gels showed increased hardness and released water from starch gels during storage. Compared with CS, native CaS exhibited higher SDS content and lower RS content and estimated glycemic index (eGI) value. Retrogradation greatly increased the RS content in retrograded CaS and was almost five times higher than that obtained for native CaS after 7 days of storage at 4 °C, whereas it was only slightly higher than that in CS. Furthermore, retrogradation significantly decreased the eGI of CaS, indicating a potential application of CaS in functional food.
研究领域:
食品科学
·
植物学
·
营养学
✓ 已验证
DOI
高影响因子
Gels
·
2023
·Vol. 9
·期 8
·647
·
IF 4.6
Wanying Yang,Jiaqi Wang,Lingjiang Jia,Jingyi Li,Shouxin Liu
Stimulus-responsive hydrogels have been widely used in the field of drug delivery because of their three-dimensional pore size and the ability to change the drug release rate with the change in external environment. In this paper, the temperature-sensitive monomer 2-methyl-2-acrylate-2-(2-methoxyethoxy-ethyl) ethyl ester (MEO2MA) and oligoethylene glycol methyl ether methacrylate (OEGMA) as well as the pH-sensitive monomerN,N-Diethylaminoethyl methacrylate (DEAEMA) were used to make the gel with temperature and pH response. Four kinds of physicochemical double-crosslinked amphiphilic co-network gels with different polymerization degrees were prepared by the one-pot method using the stereocomplex between polylactic acid as physical crosslinking and click chemistry as chemical crosslinking. By testing morphology, swelling, thermal stability and mechanical properties, the properties of the four hydrogels were compared. Finally, the drug release rate of the four gels was tested by UV–Vis spectrophotometer. It was found that the synthetic hydrogels had a good drug release rate and targeting, and had great application prospect in drug delivery.Keywords:hydrogel;physicochemical double crosslinking;stereoscopic complexation;click chemistry;temperature response;pH response
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 11
·2570
·
IF 4.2
Ping Li,Peiyu Ren,Shuoyu Wang,Jiangshan Wang,Zidan Sun,Jiayi Sun,Weibo Gu
An oleyl alcohol-based extended surfactant, sodium oleyl polyethylene oxide-polypropylene oxide sulfate (OE3P3S), was synthesized and identified using FT-IR and1H NMR. The adsorption and aggregation behaviors of OE3P3S and its mixture with cationic surfactant alkyltrimethylammoniumbromide (ATAB) were investigated under different molar ratios. The static surface tension analysis indicated that the critical micellization concentration (cmc) and the critical surface tension (γcmc) of OE3P3S were 0.72 mmol/L, and 36.16 mN/m, respectively. The cmc and γcmcvalues of the binary system were much lower than that of the individual component. And the cmc values of OE3P3S/ATAB = 6:4 mixtures decreased with an increase in the chain length of the cationic surfactant in the binary system. It was found from the dynamic surface tension that there was a slower diffusion rate in the binary system compared to the pure surfactant, and the adsorption processes for OE3P3S/ATAB = 6:4 were mixed diffusion-kinetic adsorption mechanisms. With a combination of DLS data and TEM measurements, formations of vesicles in OE3P3S/ATAB = 6:4 solutions appeared to occur at a concentration of 0.05 mmol/L. By studying the formation of liquid crystal structures in an emulsion prepared with OE3P3S as the surfactant, it was found that the oil-in-water emulsion is birefringent with a Maltese cross texture, and the rheological properties revealed its predominant viscoelastic behavior and shear thinning properties.
研究领域:
物理化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-8
·
IF 17.694
Tang Sihan,Gong Jiang,Shi Yunsong,Wen Shifeng,Zhao Qiang
Stable interfaces between immiscible solvents are crucial for chemical synthesis and assembly, but interfaces between miscible solvents have been less explored. Here the authors report the spontaneous water-on-water spreading and self-assembly of polyelectrolyte membranes. An aqueous mixture solution containing poly(ethyleneimine) and poly(sodium 4-styrenesulfonate) spreads efficiently on acidic water, leading to the formation of hierarchically porous membranes. The reduced surface tension of the polyelectrolyte mixture solution drives the surface spreading, while the interfacial polyelectrolytes complexation triggered by the low pH of water mitigates water-in-water mixing. The synergy of surface tension and pH-dependent complexation represents a generic mechanism governing interfaces between miscible solvents for materials engineering, without the need for surfactants or sophisticated equipment. As a proof-of-concept, porous polyelectrolyte hybrid membranes are prepared by surface spreading, exhibiting exceptional solar thermal evaporation performance (2.8 kg/m 2 h) under 1-sun irradiation.
研究领域:
材料科学
·
化学工程
·
表面化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2022
·Vol. 331
·期 7
·3135-3145
·
IF 1.754
Zhang Hao,Xi Hailing,Lin Xiaoyan,Liang Lili,Li Zhanguo,Pan Xunhai,Luo Xuegang
Abstract Conventional water-based detergents cannot remove radioactive contamination on the surface below 0 °C. In order to solve this problem, a biodegradable antifreeze foam, containing the antifreeze, the chelating agent and the surfactant in the low pH complex system, has been developed with the small molecule lauryl alcohol (LA) as the foam stabilizer. The developed foam being with short decontamination time which is easy to use and collect, can significantly reduce the amount of radioactive waste. The foam has good stability and decontamination efficiency as low as − 10 °C. The stabilization mechanism of LA on foam was studied. At the range of from 0 to − 10 °C, the decontamination rates of simulated radioactive cesium (Cs) and strontium (Sr) pollution are all above 90% on surfaces with different roughness such as glass, stainless steel, ceramic tile, marble and paint. Graphic Abstract
研究领域:
环境科学
·
核工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
GIANT
·
2023
·
IF 7
Caihong Zhang,Weijie Wang,Pengfei Zhang,Shuguang Yang
Complexation between polymers of different species in a common solvent is a fundamental process in various applications such as functional polymeric membrane and drug delivery, yet the understanding of energetics, phase behaviors, and kinetics of polymer complexation is rather challenging partially due to the multi-component nature of the system. In this work, we investigate the hydrogen-bonding complexation of poly(acrylic acid) (PAA) and poly(vinylpyrrolidone) (PVPON) in different solvents, and identify a variety of phase states, including homogenous solution, solid precipitate, liquid–liquid separation, gelation, and kinetically trapped structures. Among different solvents, N -methyl-2-pyrrolidone (NMP) has a similar structure to the repeating unit of PVPON and the complexation in NMP almost has no heat, suggesting the process is driven by entropy. The PAA/PVPON-NMP system exhibits an upper critical solution temperature; specifically, as the temperature decreases, a homogeneous solution first becomes opalescent, then undergoes a liquid–liquid separation, and finally undergoes a liquid–gel separation. On the other hand, when the polymer concentration is above a threshold, a homogenous solution turns into a gel directly without involving liquid–liquid separation with decreasing temperature. Accordingly, we construct a temperature–concentration phase diagram that shows how the gelation interplays with coacervation. This work provides a broad vision on phase behaviors of polymer complexation.
研究领域:
高分子科学
·
材料科学
·
物理化学
✓ 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）