FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Can Luo,Ruiqi Wang,Yingying Gu,Xiyuan Liu,Jie Zhu
This study investigated the substitution of NaCl with MgCl 2 or CaCl 2 in κ/ι-car myofibrillar protein complexes (K/I-MP) to improve low-sodium gel meat products. Texture and cooking loss analysis showed that the effects of MgCl 2 or CaCl 2 depended on the carrageenan type and conditions. κ-carrageenan (κ-car ) exhibited a negative effect under Ca 2+ (cooking loss increased by 30.69%) and a positive effect under Mg 2+ (cooking loss decreased by 13.41%); both carrageenans showed regulatory effects, with κ-car having a greater impact. Analysis of hydrophobicity, sulfhydryl content, particle size, AFM, CD, rheology, infrared spectroscopy, and molecular docking revealed that Ca 2+ and ι-carrageenan (ι-car) formed complexes via salt bridges, significantly enhancing MP aggregation and structural stability. Infrared spectroscopy and molecular docking further confirmed that ι-car reacted more readily with MP than κ-car Particle size increased from 1.5 μm to 2.5 μm, α-helix content rose from 25% to 35%, and hydrophobic group exposure decreased. In contrast, κ-car promoted aggregation through hydrophobic interactions and sulfhydryl crosslinking, with a weaker increase in α-helix content (25% to 28%). Mg 2+ had a weaker effect but significantly enhanced aggregation when combined with κ-car. In conclusion, Ca 2+ enhanced MP structure via salt bridges, especially with ι-car, while κ-car promoted aggregation by altering protein conformation. Mg 2+ had a weaker effect but enhanced aggregation with κ-car. These findings provide new insights into the synergy between divalent cations and carrageenan in MP gelation and strategies for developing low-sodium meat products.
研究领域:
食品科学
·
生物化学
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DOI
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Zhao Feiyang,Liu Huijuan,Jin Yilin,Ru Hongfu,Wang Longfei,Xiang Shuangfei,Li Hao,Zhao Shujun,Fu Feiya,Camilleri Ing. Duncan,Liu Xiangdong
The application range of rice straw (RS) is limited by its poor flame and water resistance. It’s still a great challenge to endow RS fibers with excellent flame and water resistance properties without compromising the intrinsic mechanical properties. Here, a simple surface treatment strategy of RS fibers via co-treatment with phytic acid (PA) and calcium chloride (CaCl 2 ) was developed. First, PA was grafted onto RS fibers by esterification reaction. Then RS fibers were ionically crosslinked by CaCl 2 treatment. Modified RS fibers (PCRS) were then mixed with unsaturated polyester resin (UPR) to produce PCRS/UPR composites (PCRU). Benefiting from Ca 2+ complexes via the ionic crosslinking between Ca 2+ and –P (=O)–OH of the PA, –OH of the RS fibers, PCRU demonstrates enhanced tensile strength (12.04 MPa), good waterproofing capability, and flame-retardant performance. PCRU exhibites low water absorption rate (5.90%) and dimensional stability (thickness deformation less than 1.76%) after 168 h of water immersion. In addition, the limiting oxygen index and the total heat release of the prepared PCRU composites are 29.7 and 11.3 kJ/g, which reach the standard for flame retardant materials. Therefore, this study provides a simple and green pretreatment strategy of rice straw fiber for the applications in flame retardant, low water absorption, and dimensionally stable composites. Graphical
研究领域:
材料科学
·
聚合物复合材料
·
表面处理
·
阻燃性能
·
防水性能
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产品关联
DOI
高影响因子
Energies
·
2024
·Vol. 17
·期 20
·5033
·
IF 3
Yutong Xiao,Siyu Wei,Yuanyi Yang,Chunhao Wang,Shanbi Peng
As a passive solar design technology, the Trombe wall can improve buildings’ energy efficiency and thermal comfort. However, the traditional Trombe wall heating efficiency is low and cannot meet the needs of continuous night heating of the building. To solve these problems, a new type of sheet-like composite adsorbent is proposed in this study, prepared from calcium chloride supported by a rock wool board, a high-porosity building material. The high adaptability of rock wool board to the building wall makes it possible for the composite adsorbent to be directly applied to the Trombe wall. The results show that the macroporous structure of the rock wool board provides a wealth of space for loading hydrated salts. The smaller the density and thickness, the more calcium chloride the rock wool board can carry, speeding up the absorption/deportation process. The rock wool slab-based calcium chloride composite adsorbent has a maximum adsorption capacity of 51% and a heat storage density of about 838 J/g. Achieving the desorbed balance within 8 h and applying it to the Trombe wall is expected to attain continuous heating of buildings and has significant potential in building energy conservation.
研究领域:
建筑材料
·
太阳能技术
·
能源储存
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Kai Li,Wen Xi,Xinyue Ma,Li Long,Senlin Shao
Nanofiltration (NF) technology has been extensively applied in diverse water treatment scenarios, with a growing emphasis on improving its selective separation of different salts. While existing research broadly linked pore size and surface charge to separation performance, the differential impacts of these two characteristics on specific salts remain unclear. Herein, this study systematically investigated specific effects of polyamide pore size and surface charge on salt rejection and selectivity of NF membranes. By decreasing piperazine concentration in the support-free polyamide formation, we fabricated a series of NF membranes with progressively increasing pore size and surface charge. CaCl 2 rejection exhibited the strongest correlation with surface charge ( R 2 = 0.86), while Na 2 SO 4 rejection showed highest dependence on pore size ( R 2 = 0.88). In addition, CaCl 2 /Na 2 SO 4 selectivity exhibited a two-stage dependence on pore size, peaking at a threshold around 0.6 nm. This suggested potential optimizations for CaCl 2 /Na 2 SO 4 selectivity, where polyamide pore size can be well-tuned to approach the threshold with maximizing surface charge. Moreover, the NF membrane with higher CaCl 2 /Na 2 SO 4 selectivity exhibited the better anti-scaling propensity, with a significant reduction in irreversible scaling ratio. Our findings provided insights into the regulation of polyamide pore size and surface charge for achieving the high salt/salt selectivity of NF membranes.
研究领域:
环境工程
·
膜科学
·
水处理
·
分离技术
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产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 56
·34177-34186
·
IF 3.119
Yuanfu Tian,Jinqiang Tan,Yixin Wu,Zhiyuan Song,Qian Tao,Xuan Zheng,Tao Hu,Xinghou Gong,Chonggang Wu
Polyamide (PA)-66 is successfully ionised with various weight fractions of CaCl2 to prepare PA-66 ionenes bearing different ion contents (ICs). The PA-66 ionenes against PA-66 are incorporated as heterogeneous nucleators into poly(ethylene terephthalate) (PET) to effectively promote PET crystallisation. Compared to the PET/PA-66 (95/5 wt/wt), the PET/PA-66 ionenes (95/5) markedly improve the crystallisation rate and degree of crystallinity. Notably, as the IC of the PA-66 ionene rises from 0 to 11.4 mol%, the nucleation efficiency first increases and then decreases. This may be attributed to the introduction of strong ion–dipole interactions between the CaCl2-coordinating amides of the PA-66 ionenes and the esters of the PET matrices as the IC increases, which gradually boosts the PET/PA-66 ionene interfacial compatibility to create finer nucleator crystals with a denser distribution, thereby steadily enhancing the nucleation efficiency. However, once the IC exceeds 6.5 mol%, the dramatically improved interfacial compatibility causes greatly more and thicker amorphous interphase, which inhibits PET crystallisation. The results indicate that the PA-66 ionene containing 6.5 mol% of Ca2+ is a promising nucleator to maximise the crystallisation acceleration of PET due to the moderate interfacial compatibility by medium-concentration ion–dipole interactions.
研究领域:
高分子化学
·
材料科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Biao Ma,Guoxing Ren,Dongfu Liu,Wenhua Xu,Wenxin Xia,Songwen Xiao
Lithium-selective extraction from waste lithium-ion batteries (LIBs) has attracted wide attention. Among various recycling methods, pyrolysis reduction-water leaching has been viewed as the most promising one, because parts of reductants can be replaced by the battery’s own organic matters, such as the binders (polyvinylidene fluoride (PVDF)). However, the existence of fluorinated organics results in a significant decrease in Li leaching efficiency as well as the generation of hazardous gas containing F. In this study, a novel dual-function approach is proposed by adding CaCl 2 into the co-pyrolysis process of waste NCM powders and fluorinated organic wastes, which effectively improves the Li recovery together with achieving the fixation of halogens. The PVDF was selected as the main example to demonstrate the feasibility of the new method, which was further confirmed by two other fluorinated organics (electrolyte and Teflon). Thermodynamic calculation, XRD, XPS, and SEM-EDS are used to investigate reaction mechanisms for enhancing lithium recovery and halogen fixation. During the co-pyrolysis, the Li in the NCM is transformed into LiCl instead of forming insoluble LiF; meanwhile, the F in the PVDF is converted into CaF 2 , which is fixed in the residue rather than releasing in the air. The Cl in the CaCl 2 is also converted into the valuable product of LiCl. Under the optimal conditions, the Li water-leaching rate reached 98.88 %, and the fixation rates of F and Cl were 92.54 % and 98.71 %, respectively. This strategy also extends to the synergistic treatment of various fluorinated organic wastes with the spent LIBs. Therefore, the proposed method is more economically effective and environmentally friendly.
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Wei Liang,Qian Zhang,Shuangfeng Guo,Xiangzhen Ge,Huishan Shen,Jie Zeng,Haiyan Gao,Wenhao Li
This study prepared starch with different degrees of gelatinization (10 % and 30 %) by CaCl 2 , and further combined with citric acid at different concentrations (10 %, 20 %, and 30 %) for esterification. The results indicated that CaCl 2 induced surface gelatinization and the esterification promoted its fragmentation. This synergistic modification induced depolymerization of starch chains and a decrease in molecular weight, although starch's Maltese cross, growth rings, and crystal type remained unchanged. Moreover, the synergistic modification induces a short-range ordered structure loss and the enthalpy decrease of starch, which induce starch pasting properties decrease and solubility increase. Furthermore, the introduction of ester groups by esterification increases the resistant starch content by limiting the binding sites for digestive enzymes. In conclusion, surface gelatinization can increase active reaction sites by disrupting the starch shell structure, and serves as a potential pretreatment to enhance the deep application of esterified starch in food and pharmaceutical fields.
研究领域:
食品科学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-16
·
IF 36.3
Meng Na,Hu Yuen,Zhang Yufei,Cheng Ningbo,Lin Yanyan,Ding Chengfeng,Chen Qingyu,Fu Shaoju,Li Zhaoling,Wang Xianfeng,Yu Jianyong,Ding Bin
Highly permeable protective textiles (HPPT) with micro/nano-networks were fabricated using a non-solvent induced phase separation, synergistically driven by CaCl 2 and fluorinated polyurethane, combined with spraying technique.
The optimized HPPT exhibited excellent liquid repellency and air-moisture permeability properties due to the integration and cooperative drive of the low surface energy and the pore structure of the connectivity network, which can be used as desirable protective materials.
The formation mechanism of micro/nano-network structure was analyzed by molecular dynamics and observed by dynamic phase transition behavior, which numerically combined with theory illustrate the phase transition mechanism of HPPT.
研究领域:
材料科学
·
纺织工程
·
医疗防护
·
表面化学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Jian Wang,Jinsheng Sun,Xianbin Huang,Kaihe Lv,Zhe Xu,Zhenhang Yuan
To address the challenges of limited solubility, inadequate temperature stability, and insufficient viscosity enhancement exhibited by current treatment agents in solid-free CaCl 2 brine drill-in fluids, a zwitterionic monomer, 3-(3-vinyl-1-imidazolio)-1-propanesulfonate (SBVI), was synthesised using 1,3-propane sultone and 1-vinylimidazole. A high temperature resistant zwitterionic polymer viscosifier SEOD for divalent CaCl 2 brine drill-in fluids was synthesized using this monomer with N,N-dimethylacrylamide (DMAA), 2-Acrylamido-2-methylpropane sulfonic acid (AMPS), Sodium p-Styrene Sulfonate (SSS). As the brine density changed, SEOD showed excellent salt responsiveness and the viscosity increasing effect became more and more obvious. In saturated brine, SEOD can form intermolecular association structures, and its molecular chains entangled with each other to form a network, thereby significantly increasing the viscosity of the brine solution. The 1.0 wt% SEOD in 1.4 g/cm³ CaCl₂ brine showed exceptional thermal stability, with an initial apparent viscosity of 30.5 mPa·s, which remained at 29.5 mPa·s after aging at 200 °C for 16 hours. As a novel anti-high temperature viscosifier, SEOD effectively overcomes the thermal stability degradation and inadequate viscosity enhancement of conventional additives in divalent brine fluids. It improved the rock cuttings suspension and wellbore cleaning performance of solid free divalent brine fluids under high temperature/high pressure (HTHP) conditions in complex formations.
研究领域:
石油工程
·
聚合物化学
·
钻井液
·
高温高压（HTHP）
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2019
·
IF 5.399
Ge Ge,Yurui Han,Jiabao Zheng,Mouming Zhao,Weizheng Sun
Effects of partial substitution of NaCl with KCl, MgCl 2 or CaCl 2 on oxidative characteristics of myofibrillar protein (MP) in a hydroxyl radical generating system and their heat-induced gel properties were investigated. Results indicated that MP oxidation is dependent upon the different chloride salt types and substitution degree. MP at 0.60 M NaCl was beneficial to protein unfolding and gel quality in the oxidative system. Increased formation of disulfide bonds affected the MP conformation and resulted in a large particle size and an aggregated network of gel at the 50% substitution degree of KCl. The presence of CaCl 2 or MgCl 2 substitutes contributed to protein polymerization and insolubility. MP aggregation restrained the formation of dense and continuous gel networks during heating, and thus resulted in a low-grade gel. Ca 2+ had more serious impact on gel properties than Mg 2+ , dependent on different cation effects. Substitution of 25% NaCl by KCl gave acceptable gel quality in MP.
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
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
·
2021
·Vol. 56
·期 12
·6322-6334
·
IF 3.713
Yu Wang,Yan-hong Bai,Fei Ma,Ke Li,Hui Zhou,Cong-gui Chen
Summary A combination of high-pressure processing (HPP, 200 MPa, 10 min) and CaCl 2 (0.2%, w/w) on the cooking loss (CL), expressible moisture (EM), textural properties (hardness, springiness, cohesiveness, chewiness and firmness) and sensory attributes of reduced-sodium (1.25% NaCl) chicken meat batters (RCMB) was investigated. The results revealed that combining HPP with CaCl 2 significantly decreased EM, elevated sensory properties and acted synergistically in reducing CL and improving hardness, chewiness and firmness, which enabled RCMB to obtain quality characteristics similar to those with high salt (2.5% NaCl) content. These changes brought about by combined HPP and CaCl 2 could be attributed to increased apparent viscosity and proportion of immobilised water, enhanced rheological (elastic) properties and a denser, homogeneous protein gel network with evenly dispersed small fat globules. It is interesting to take advantage of the synergy between moderate HPP and low concentrations of CaCl 2 to develop meat products with reduced sodium content.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
Water
·
2025
·Vol. 17
·期 19
·
IF 3
Trung-Kien Pham,Quynh-Trang Thi Hoang,Cham-Anh Thi Le,Thi-Huyen Tran,Koemhong Bun,Ngoc-Tuyet Thi Le,Van-Son Ho,Van-Hieu Ngo,Quang-Duyen Le,Madina Naukanova
Water shortage has been a serious issue for many years. Hydrate-based desalination (HBD) technology is a potential candidate for this solution. The present study investigates the use of Cyclopentane (CP) as a hydrate former for desalination through crystallization at low temperatures and atmospheric pressure. The primary objective of this work is to provide phase equilibrium data for CP hydrates (CPH) in the presence of novel salt systems, including NaBr, KBr, K2SO4, NaBr–KBr, NaCl–NaBr, KCl–KBr, Na2SO4–K2SO4, and CaCl2–MgCl2. Phase equilibrium temperatures were determined using both rapid and slow dissociation procedures. The van der Waals and Platteeuw-based Kihara (Kihara) approach, Hu-Lee-Sum (HLS) correlation, Standard Freezing Point Depression (SFPD) approach, and Activity-Based Occupancy Correlation (ABOC) were applied to model these new experimental data. The experimental results demonstrate that the differences between the quick and slow procedure data range from 0 °C to 1.2 °C. In addition, the increasing salt concentration enhances the inhibitory effect on hydrate formation. Furthermore, the influence of cations on the equilibrium temperature follows the decreasing order of Mg2+> Ca2+> Na+> K+. In terms of halide anions, Br−exhibits a stronger impact on equilibrium temperature compared to Cl−. The thermodynamic modeling results (for all four models) show good agreement with the experimental data with the average absolute deviation (AAD) of less than or equal to 0.79 °C. The ABOC approach proves to be the most effective among the four methods evaluated for accurately reproducing the equilibrium temperature of CPH, with AAD less than or equal to 0.38 °C.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）