FOOD CHEMISTRY
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2023
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IF 8.8
Ying Bu,Chaonan Sun,Jiaqi Guo,Wenhui Zhu,Jianrong Li,Xuepeng Li,Yi Zhang
The purpose of this study was to screen and verify salt-enhancing peptides that can effectively reduce sodium consumption from Largemouth bass myosin through virtual hydrolysis, molecular simulation, and sensory evaluation. The human transmembrane channel-like 4 (TMC4) was constructed using Alphafold2, with 93.3 % of amino acids falling within allowed regions. A total of 19 peptides were predicted through virtual hydrolysis and screening. DAF, QIF, RPAL, and IPVM significantly enhanced the saltiness perception, and QIF exhibited the most pronounced effect in enhancing saltiness ( P < 0.05). The residues Ala258, Ser546, Ser603, Phe259, Cys265, Glu539, Lys278 and Ser585 were identified as key binding sites. The TMC4-DAF complex achieved stability after 20, 000 ps, exhibiting an average RMSD value of 0.84 nm. DAF consistently displayed fluctuations at approximately 3.05 nm, and the number of hydrogen bonds varied between 3 and 5. These results suggested that Alphafold2 modelling can be used for predicting salt-enhancing peptides.
研究领域:
食品科学
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生物信息学
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分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yanshan Ju,Peng Yang,Jiajun He,Shaochun Tang
Radiative cooling fabrics have gained significant attention for their ability to enhance comfort without consuming extra energy. Nevertheless, sweat accumulation on the skin and diminishing cooling efficiency usually exist in the reported polymer cooling membranes. Herein, we report a universal method to obtain a calcium (Ca)-salt-enhanced fiber membrane with high infrared emission and hydrophilicity for efficient passive cooling and flame retardancy. The modification by Ca salts (including CaSiO3, CaSO3, and CaHPO4) with strong infrared emission results in an improvement in hygrothermal management ability, especially for moisture absorption and perspiration regulation in hot and humid environments. As an example, the CaSiO3@PMMA fiber membrane exhibits exceptional reflectivity in the solar spectrum (∼94.5%), high emittance in the atmospheric window (∼96.7%), and superhydrophilicity with a contact angle of 31°. Under direct sunlight, the CaSiO3@PMMA membrane exhibits an obvious temperature drop of 11.7 °C and moisture management achieves an additional cooling of 8.9 °C, as further confirmed by the ability to reduce the rate of ice melting. Additionally, the composite membrane provides notable flame retardancy and UV resistance. This work paves a new path in developing new materials with perspiration management and flame retardancy for zero energy consumption cooling in hot and humid environments.
研究领域:
材料科学
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能源工程
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纺织科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Soft Matter
·
2019
·Vol. 16
·期 3
·738-746
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IF 3.399
Baichao Zhang,Chao Wang,Yinchuan Wang,Tao Li,Kankan Zhai,Fan Zhang,Yungang Bai,Ying Tan,Yuqin Ma,Kun Xu,Pixin Wang
To overcome the adverse effects of salt on the mechanical properties of hydrogels, a facile double cross-linking method has been proposed to synthesize salt-enhanced tough hydrogels. Herein, a poly(hexafluorobutyl methacrylate-acrylamide) hydrogel [P(AAm-co-HFBMA) hydrogel] is prepared by the copolymerization of acrylamide (AAm) and hexafluorobutyl methacrylate (HFBMA) with N,N′-methylene bisacrylamide (NMBA) as a cross-linking agent in a dimethylformamide (DMF)/aqueous solution; DMF is then replaced by water. The results indicate that the tensile fracture stress of the P(AAm-co-HFBMA) hydrogel (20 mol% HFBMA) is as high as 0.43 MPa, which is far better than that of the PAAm hydrogel (ca. 30 kPa). Additionally, with a further increase in the hydrophobic structural units (25 mol% HFBMA), the tensile fracture stress of the P(AAm-co-HFBMA) hydrogel can be increased up to 2.34 MPa. The mechanical strength of the P(AAm-co-HFBMA) hydrogel is significantly enhanced to 3.50 MPa (2 M) from 2.34 MPa (0 M) after it is soaked in aqueous NaCl solutions with various salt concentrations. The mechanical properties and the results of the DSC analysis indicate that the main reason for its mechanical strength to exhibit a unique salt-enhancement trend can be explained as follows. After the P(AAm-co-HFBMA) hydrogel is soaked in the salt solution, the network gradually collapses with the penetration of the small molecules of salt. Thus, the hydrophobic C–F units easily form dynamic cross-linking junctions due to the switchable hydrophobic interaction between C–F groups, which can endow the P(AAm-co-HFBMA) hydrogel with a more effective dynamic energy dissipation mechanism in salt solution.
研究领域:
高分子材料
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生物医用材料
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软物质物理
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组织工程
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药物递送系统
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Yahui Shi,Jinsong Li,Dongjin Wan,Jinhui Huang,Yongde Liu
In this work, carbonyl-modified g-C 3 N 4 (CO-C 3 N 4 ) is prepared through one-step calcination of the melamine-oxalic acid aggregates. The visible light-assisted photocatalytic degradation efficiency of the tetracycline hydrochloride (TCH) for CO-C 3 N 4 is significantly enhanced by introducing the peroxymonosulfate (PMS), and the apparent rate constant is greatly increased from 0.01966 min −1 in CO-C 3 N 4 /vis system to 0.07688 min −1 in CO-C 3 N 4 /PMS/vis system. It is found that carbonyl for CO-C 3 N 4 might offer possible reactive sites for PMS activation and collection sites of photo-generated electrons, greatly accelerating carrier's separation for PMS activation. The favorable conditions, such as the higher catalyst dosage, higher PMS amount and alkaline pH, contribute to TCH degradation. The deleterious effects of co-existing anions on the TCH degradation efficiency are ranked in a decline: H 2 PO 4 − > SO 4 2− > HCO 3 − > NO 3 − > Cl − , and it may be affected by the type and amounts of anions and active radicals generated. The radical trapping tests and electron spin resonance (ESR) detection display that the O 2 − , h + , 1 O 2 , OH and SO 4 − all contribute to TCH degradation. Meanwhile, possible degradation mechanism, intermediates and degradation pathway of TCH are revealed in CO-C 3 N 4 /PMS/vis system. This study will offer a new insight for constructing PMS activation with carbonyl modified g-C 3 N 4 photocatalysis system to achieve effective treatment of organic wastewater.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Sustainable Chemistry and Pharmacy
·
2025
·
IF 5.8
Qingfen Zhang,Dan Ge,Shengcheng Mi,Qi Lu
The bioactive properties of essential oil are strongly associated with their chemical composition. In this work, a novel method of salt-enhanced homogenization pretreatment coupled with solvent-free microwave extraction (HP-SSFME) was developed for extracting essential oil (KGEO) from fresh Kaempferia galanga rhizomes, which significantly improved the extraction efficiency. Gas chromatography was employed to measure the contents of the main active components, ethyl p -methoxycinnamate (EPMC) and ethyl cinnamate (EC) in the essential oil. The extraction process was optimized by the Box-Behnken Design using the comprehensive scores of the yields of EPMC, EC, and KGEO obtained by the entropy weight method. The optimal parameters were determined as follows: amount of sodium chloride was 1.60 %, homogenization speed of 15000 r/min, homogenization time of 4 min, microwave irradiation power of 300 W, microwave irradiation time of 23 min. Under these conditions, the KGEO yield was 5.10 %, EPMC yield was 3.81 %, EC yield was 0.89 %. Compared with the conventional methods, the HP-SSFME method not only significantly increased the extraction yield of KGEO but also remarkably enhanced the yields of EPMC and EC. Additionally, the HP-SSFME method has low CO 2 emission and energy consumption, highlighting its environmental friendliness. Moreover, in terms of antibacterial activity, the HP-SSFME outperformed other methods, demonstrating a more powerful and extensive inhibitory effect against a range of bacteria. This study provides a valuable reference for the efficient extraction and quality control of essential oils from Kaempferia galanga rhizomes.
研究领域:
植物化学
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环境科学
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食品科学
✓ 已验证
DOI
高影响因子
PHYSICS OF FLUIDS
·
2023
·Vol. 35
·期 12
·
IF 4.6
Liao Junjie,Liu Shuai,Li Ning,Huang Ju,Fan Haiming,Fang Shenwen,Duan Ming
Previous studies have found that ionic surfactant micelles can induce depletion forces between oil droplets, whereas the depletion forces induced by nonionic surfactant micelles cannot be measured. Nonionic surfactants are usually mixed with ionic surfactants to induce depletion forces. Here, we report that mixing of nonionic polymer micelles and inorganic salt is also an effective method for inducing depletion between oil droplets. Optical tweezers are used to measure the interaction forces between oil droplets in the aqueous solution of polyoxyethylene–polyoxypropylene–polyoxyethylene nonionic polymer. Without salts, there is no depletion force between oil droplets regardless of whether the concentration of polymer is above or below the critical micelle concentration (CMC). This result is consistent with literature that the oil drops adsorbed by the nonionic polymers were stable against coalescence. However, the depletion force between oil droplets generates when NaCl is added, and the concentration of Pluronic F127 is above or equal to the CMC. This suggests that salts can enhance the depletion force induced by nonionic polymer micelles. These findings have significant implications for the stability of emulsions in the food, oilfield, and medicine industries.
研究领域:
胶体科学
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表面化学
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材料科学
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生物物理学
✓ 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）