Ultrasonics Sonochemistry最新文献

{"title":"Insights into cavitation enhancement: Numerical simulation and spectrum analysis of a novel dual-frequency octagonal ultrasonic reactor.","authors":"Zhiping Shi, Zedong Wang, Bowen Yang, Liyan Liu","doi":"10.1016/j.ultsonch.2024.107197","DOIUrl":"10.1016/j.ultsonch.2024.107197","url":null,"abstract":"<p><p>Ultrasonic reactors, widely applied in process intensification, face limitations in their industrial application due to a lack of theoretical support for their structural design and optimization, particularly concerning the uniformity of the cavitation zone. Addressing this gap, our study introduces a novel approach to design a multi-frequency octagonal ultrasonic reactor of capacity 9.5 L through numerical simulation and spectrum analysis. The effects of reactor shape, transducer position, and multi-frequency ultrasound interaction on the sound pressure distribution in the reactor were simulated, employing a linear wave equation that accounts for the inhomogeneous distribution of bubbles. The accuracy of sound pressure amplitude predictions has been validated through a multi-frequency simulation method, exhibiting good consistency with experimental data. The results revealed that an octagonal structure with transducers positioned at the bottom and sides enhances the uniformity and distribution of the cavitation area compared to traditional rectangular designs. Notably, the combination of 20 and 40 kHz frequencies at a driving pressure of 3 bar significantly enhances cavitation rates to 69.2 %, surpassing the single frequency of 40 kHz by an increase of 16.5 %. The enhanced cavitation rate can be attributed to the dual-frequency operation, which facilitates larger bubble radii, along with higher collapse temperatures and pressures, as determined through bubble dynamics calculations. Moreover, spectrum analysis method enables energy separation, showing that the introduction of a 40 kHz transducer into a 20 kHz field markedly strengthens both steady and transient cavitation intensities. These findings offer practical insights for their structural design and optimization, paving the way for their broader industrial application.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107197"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11730955/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142871017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Systematic free energy insights into the enhanced dispersibility of myofibrillar protein in low-salt solutions through ultrasound-assisted enzymatic deamidation.","authors":"Yating Liu, Zongyun Yang, Zhen Li, Juan Shen, Xia Wang, Ru Li, Ye Tao, Xinglian Xu, Peng Wang","doi":"10.1016/j.ultsonch.2024.107199","DOIUrl":"10.1016/j.ultsonch.2024.107199","url":null,"abstract":"<p><p>This work aimed to investigate the effects of ultrasound assisted enzymatic deamidation by protein-glutaminase (PG) on the dispersion of myofibrillar protein (MP) in low-salt solutions. The solubility, structural characteristics, transmission electron microscopy, asymmetric-flow field-flow fractionation, steady shear rheological property and multiple light scattering of MP deamidated by PG (MP-PG) and MP pretreated with ultrasound followed by PG deamidation (MP-U-PG) were determined. Molecular docking and molecular dynamics (MD) simulations were used to estimate the interaction between PG and MP. Under ultrasound assistance, the MP deamidated for 16 h (MP-U-PG16) showed the highest solubility (80.1 %) in low-salt conditions, which is attributed to its highest absolute zeta potential and smallest particle size. Although secondary structure analysis showed that MP-PG and MP-U-PG had an increased α-helix ratio and a decreased β-sheet ratio, ultrasonic treatment had a significantly influence on the MD results. The results manifested that hydrogen bond was the primary forces driving the binding between PG and MP, and the hydrogen bond and hydrophobic interaction were the dominant forces responsible the binding between PG and MP pretreated with ultrasound. According to the energy landscapes theory, ultrasound could overcome the energy barriers through external force input and find the best pathway to achieve the final lowest energy state. Our research contributed to the improvement of the colloidal dispersibility of MPs under low-salt conditions and the regulation of protein interaction by ultrasound assistance.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107199"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11713509/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergist effect of thermosonication and NaCl on inactivation of Staphylococcus aureus and Shigella flexneri in lettuce: The effect of acoustic field and reaction kinetics.","authors":"Reza Roohi, Seyed Mohammad Bagher Hashemi, Mohammad Reza Zarrinpour Balaei","doi":"10.1016/j.ultsonch.2024.107161","DOIUrl":"10.1016/j.ultsonch.2024.107161","url":null,"abstract":"<p><p>The study aimed to investigate the effect of thermosonication (TS; 37 KHz, 300 W; 30, 40, 50, and 60 °C for 10 min) and NaCl (12 % w/v) on the inactivation of Staphylococcus aureus and Shigella flexneri in lettuce, as well as to examine the kinetics of inactivation and the thermodynamic behaviors of the process. Computational Fluid Dynamics (CFD) simulations were employed to analyze the acoustic pressure field, velocity contours, and streamlines. The results showed that NaCl addition had the least impact on inactivation compared to TS and combined NaCl + TS. Increasing the temperature led to higher inactivation of both bacteria, with a more significant effect at 60 °C. Thermosonication treatment had a more consistent effect on inactivation compared to the addition of NaCl. When exposed to thermosonication, the population of S. aureus and S. flexneri could be reduced by 5.1 to 6.9 log CFU/g and 5.5 to 7.4 log CFU/g, respectively, at temperature levels of 30 and 60 °C. Additionally, no significant relationship between entropy reduction and type of microorganisms was observed. The samples that were treated only with NaCl had higher energy absorption than the other samples.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107161"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11665662/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An ultrasonic degraded polysaccharide extracted from Pueraria lobata ameliorate ischemic brain injury in mice by regulating the gut microbiota and LPS-TLR4 pathway.","authors":"Yulong Zhang, Zuman Dou, Shanshan Li, Huaying Zhang, Shanshui Zeng, Xiangyu Zuo, Yu Xiao, Lingling Zhang, Zhixin Li, Qingfeng Zhu, Wenyang Zhang, Hui Niu, Qingfei Duan, Xiaoxia Chen, Zhuang Li, Hongwei Zhou, Qian Wang","doi":"10.1016/j.ultsonch.2024.107200","DOIUrl":"10.1016/j.ultsonch.2024.107200","url":null,"abstract":"<p><p>Ischemia brain injury is closely associated with the gut microbiota. Polysaccharides, as a typical prebiotic, have been extensively employed in stroke treatment. In our previous study, Pueraria lobata polysaccharide (PLP-3) with antioxidant activity was prepared via water extraction and alcohol precipitation combined with ultrasonic degradation. In this study, the effects of PLP-3 on ischemia brain injury and its regulatory effects on the gut microbiota were further investigated. The results demonstrated that PLP-3 effectively reduced the infarct area, improves neurological function, and alleviates neuronal damage of cerebral ischemia injury. Mechanistically, PLP-3 significantly reduces serum LPS levels in MCAO mice, inhibiting TLR-4 activation in brain tissue and thereby reducing IL-1β and TNF-α levels. Meanwhile, PLP-3 significantly repaired the intestinal barrier injury by increasing the expression of tight junction proteins (ZO-1 and Occludin) and increasing the number of goblet cells. Additionally, the structure and composition of gut microbiota in MCAO mice after PLP-3 intervention, were also significantly changed, especially the enrichment of Lactobacillus and the reduction of Corynebacterium and Staphylococcus. At the same time, short chain fatty acid, metabolites of gut microbiota, were also significantly increased and significantly correlated with the abundance of Lactobacillus. Moreover, LC-MS untargeted metabolomics revealed that PLP-3 significantly improves the intestinal metabolic profile after cerebral ischemia injury, upregulating the amino acid biosynthesis pathway and enriching amino acids such as glutamine and arginine, as well as neuroprotective flavonoids such as fisetin and liquiritigenin. These results suggested that PLP-3 could protect mice from cerebral ischemia-reperfusion injury by regulating gut microbiota and repairing gut barrier, inhibiting brain LPS/TLR4/MyD88 inflammatory pathway, therefore we provide a theoretical basis for PLP-3 as a functional food to prevent ischemic brain injury.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107200"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11713736/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound-triggered drug release and cytotoxicity of microbubbles with diverse drug attributes.","authors":"Chi-Fen Chuang, Chia-Wei Lin, Chih-Kuang Yeh","doi":"10.1016/j.ultsonch.2024.107182","DOIUrl":"10.1016/j.ultsonch.2024.107182","url":null,"abstract":"<p><p>Ultrasound (US)-triggered cavitation of drug-loaded microbubbles (MBs) represents a promising approach for targeted drug delivery, with substantial benefits attainable through precise control over drug release dosage and form. This study investigates Camptothecin-loaded MBs (CPT-MBs) and Doxorubicin-loaded MBs (DOX-MBs), focusing on how properties such as hydrophilicity, hydrophobicity, and charged functional groups affect their interaction with the lipid surfaces of MBs, thereby influencing the fundamental characteristics and acoustic properties of the drug-loaded MBs. In comparison to DOX-MBs, CPT-MBs showed larger MB size (2.2 ± 0.3 and 1.4 ± 0.1 μm, respectively), a 2-fold increase in drug loading, and an 18 % reduction in leakage after 2 h at 37℃. Under 1 MHz US with a 100 ms pulse repetition interval (PRI), 1000 cycles, 5-minute duration, and 550 kPa acoustic pressure, CPT-MBs undergo inertial cavitation, while DOX-MBs undergo stable cavitation. Drug particles released from these MBs under US-induced cavitation were analyzed using dynamic light scattering, NanoSight, cryo-electron microscopy, and density gradient ultracentrifugation. Results showed that CPT-MBs mainly release free CPT, while DOX-MBs release multilayered DOX-lipid aggregates. The cytotoxicity to C6 cells induced by US-triggered cavitation of these two types of MBs also differed. DOX-lipid aggregates delayed initial uptake, leading to less pronounced short-term (2 h) effects compared to the rapid release of free CPT from CPT-MBs. These findings underscore the need to optimize drug delivery strategies by fine-tuning MB composition and US parameters to control drug release kinetics and achieve the best tumoricidal outcomes.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107182"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11655813/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142779146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasonic treatment-assisted reductive deposition of Cu and Pd nanoparticles on ultrathin 2D Bi₂S₃ nanosheets for selective electrochemical reduction of CO₂ into C₂ compounds.","authors":"Bilal Masood Pirzada, Faisal AlMarzooqi, Ahsanulhaq Qurashi","doi":"10.1016/j.ultsonch.2024.107189","DOIUrl":"10.1016/j.ultsonch.2024.107189","url":null,"abstract":"<p><p>In this work, we have ultrasonically deposited Cu and Pd nanoparticles on Bi₂S₃ nanoparticles, prepared using an ultrasonication assisted hydrothermal method. We implemented intense ultrasonic waves bearing frequency of 20 kHz and power of 750 W at the acoustic wavelength of 100 mm to reduce Cu and Pd nanoparticles on the Bi₂S₃ surface. The XRD confirmed the formation of highly crystalline Bi₂S₃ nanoparticles with a pure orthorhombic phase and the deposition of copper (Cu^o) and palladium (Pd^o) nanoparticles was indicated by the strengthening and broadening of the peaks. XPS also confirmed the formation of Cu^o and Pd^o nanoparticles on Bi₂S₃. The Transmission Electron Microscopy (TEM) also exhibited the deposition of Cu and Pd nanoparticles on the Bi₂S₃ nanosheets which was further confirmed using high resolution TEM analysis. The electrochemical CO₂ reduction by Cu-Pd/Bi₂S₃ electrocatalyst using Cu foam as the conducting support led to the formation of acetaldehyde and ethylene as the major products. The rate of formation of ethylene was found to be 488.5 μ mol g^-1h^-1 at an applied potential of -0.6 V (vs. RHE), with the best Faradaic efficiency of 57.09 % at -0.4 V (vs. RHE). Among the liquid phase products, acetaldehyde was the major product showing the maximum Faradaic efficiency of 6.473 % at -0.2 V (vs. RHE), with a total formation rate of 64.27 μ mol g^-1h^-1. The results revealed that the Cu-Pd/Bi₂S₃ electrocatalyst was more selective to C₂ products while the pure Bi₂S₃ nanoparticles majorly produced C₁ compounds.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107189"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11721539/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Innovative CO₂-NBs-assisted ultrasonication for the phytochemical extraction of peanut (Arachis hypoga) shells: Synthesis and characterization of CO₂-nanobubbles.","authors":"Nayyar Iqbal, Miral Javed, Ramy M Khoder, Areej Areej, Renyu Zheng, Shanbai Xiong, Ibrahim Khalifa, Hassan Barakat, Youming Liu","doi":"10.1016/j.ultsonch.2024.107198","DOIUrl":"10.1016/j.ultsonch.2024.107198","url":null,"abstract":"<p><p>This study was designed to obtain the maximum extraction yield of peanut shell (PS) polyphenols using a novel carbon dioxide nanobubbles (CO₂-NBs) assisted ultrasonic extraction method. CO₂-NBs were generated in distilled water with a self-developed high-pressure nano-jet homogenization method and characterized by size, zeta potential and transmission electron microscopy (TEM). The obtained nanobubble's mean size and zeta potential were 229.96 ± 17.44 nm and -15.9 ± 1.27 mV, respectively. Later, these CO₂-NBs, combined with ultrasonic method, were used for the extraction of polyphenols, achieving the highest polyphenol content (3619.21 ± 113.07 µg GAE/mL) as compared to ultrasonic extraction (2914.69 ± 145.45 µg GAE/mL) and conventional extraction (2340.11 ± 80.02 µg GAE/mL). Response surface methodology (RSM) provided optimization parameters, including ultrasonic power of 358.76 W, surfactant concentration of 4.54 %, and extraction time of 41.41 min. HPLC analysis identified distinct peaks corresponding to polyphenolic compounds such as gallo-catechin, catechin gallate, resveratrol, and luteolin, confirming their presence and concentrations in the peanut shell extract (PSE). Scanning electron microscopy (SEM) revealed significant structural disruption and increased porosity in peanut shell powder, supporting the enhanced extraction of polyphenols through CO₂-NBs-assisted ultrasonic extraction process. This research establishes theoretical and practical foundation for generation of CO₂-NBs and CO₂-NBs ultrasonic extraction technology to efficiently extract polyphenols from waste PS, thereby enhancing the extraction efficiency of valuable compounds for use in functional food products and promoting sustainable practices in food industry.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107198"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11719417/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142852025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An experimental class to illustrate the physical and chemical effects of ultrasound as an introduction to practical advanced oxidation processes.","authors":"Efraím A Serna-Galvis, Ricardo A Torres-Palma","doi":"10.1016/j.ultsonch.2024.107196","DOIUrl":"10.1016/j.ultsonch.2024.107196","url":null,"abstract":"<p><p>This work presents the development of an illustrative experimental class about the mechanical and chemical effects of ultrasound to introduce students to the field of sonochemical advanced oxidation processes. Ultrasound equipment at low frequency (<100 kHz) and mid-high frequency (200-500 kHz), in addition to basic laboratory equipment (glassware instruments and a spectrophotometer) and accessible reagents (commercial activated carbon, potassium iodide, ammonium heptamolybdate, distilled water, and methyl orange) are required. Under the teacher's supervision, the students will perform experiments on the sonication of activated carbon in water to learn about the mechanical effects. Meanwhile, to evidence the chemical effects, the water sonolysis to produce hydrogen peroxide_, and the degradation of a model organic pollutant (methyl orange) are carried out. In qualitative aspects, the students will learn the predominant effects as a function of the ultrasound frequency. From a practical point of view, the students are expected to learn how to quantify the sonogenerated hydrogen peroxide and follow the sonochemical degradation of a model compound. Besides, a short-written report and its feedback are presented as the evaluation strategy for the learning of students.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107196"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11713737/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mild ultrasound-assisted alkali de-esterification modified pectins: Characterization and structure-activity relationships in immunomodulatory effects.","authors":"Huan Guo, Dong Li, Baohe Miao, Kanglin Feng, Guijing Chen, Renyou Gan, Zhiliang Kang, Hong Gao","doi":"10.1016/j.ultsonch.2024.107215","DOIUrl":"10.1016/j.ultsonch.2024.107215","url":null,"abstract":"<p><p>Apple pectin (AP), a well-established dietary fiber, offers significant health benefits, particularly in immunomodulation. However, the structure-activity relationship (SAR) in this context remains poorly understood. This study aimed to elucidate the impact of varying degrees of esterification (DE) on AP's SAR in immunomodulatory activity. AP-Es (AP-E1, AP-E2, AP-E3) with different DE were prepared using mild ultrasound-assisted alkali de-esterification, followed by SAR analysis. Results revealed that AP-E3, with the lowest DE (5.08 ± 0.22 %), demonstrated a significant reduction in homogalacturonan (HG) domains and a corresponding increase in rhamnogalacturonan-I (RG-I) domains, which coincided with enhanced immunomodulatory effects. The molecular weights of AP-E1, AP-E2, and AP-E3 were determined to be 30.94 ± 0.83 kDa, 27.61 ± 0.65 kDa, and 22.17 ± 0.57 kDa, respectively. To further explore the underlying mechanism, transgenic zebrafish with fluorescent macrophages were utilized. A positive correlation was observed between AP-E3 concentration and the number of fluorescent microspheres engulfed by macrophages. Additionally, AP-E3 significantly upregulated the expression of key immune response genes (tnf-α, il-1β, il-6, cox-2, inos, and nf-κb) and restored the gut microbiota composition and abundance in chloramphenicol-induced immunocompromised zebrafish. Metabolomics analysis revealed that AP-E3 effectively restored metabolic homeostasis by activating multiple signaling pathways associated with signal transduction, immune regulation, and metabolism. These findings highlight the potential of low-esterified AP enriched with RG-I domains as a promising candidate for applications in immune modulation and gut health management.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107215"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11751549/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the rheological and tribological properties of emulsion-filled gel by ultrasound-assisted cross-linked myofibrillar protein emulsion: Insight into the simulation of oral processing.","authors":"Ye Tao, Jiaming Cai, Peng Wang, Lei Zhou, Jiale Chai, Zixu Wang, Xinglian Xu","doi":"10.1016/j.ultsonch.2024.107205","DOIUrl":"10.1016/j.ultsonch.2024.107205","url":null,"abstract":"<p><p>This study aimed to investigate the effect of ultrasound-assisted cross-linking of myofibrillar protein (MP) emulsions on the enhancement of rheological and tribological properties of emulsion-filled gel. The micro-morphology, texture, water hold capacity (WHC), chemical forces, linear shear rheological behavior, large amplitude oscillatory shear (LAOS), oil-released content, and simulated oral friction of the water-filled gel (WP-G), the original MP fabricated emulsion-filled gel (NP-G), the crosslinked MP fabricated emulsion-filled gel (NPG-G), and the ultrasound treated crosslinked MP fabricated emulsion-filled gel (NPGU-G) were determined. Results indicated that emulsion as filler phase significantly improved the rheological and tribological properties of the gel, especially for the ultrasound-assisted MP emulsion-filled gel (NPGU-G) group, the smaller droplet size of emulsion contributed to the density and structural uniformity of the gel. Based on the excellent hydrophobic interaction between emulsion droplets and protein matrix, the NPGU-G group presented enhanced hardness, gumminess, chewiness, hydrophobic interaction, creep-recovery behavior, and the retarded transition of nonlinear response. Furthermore, the lower oil-released content and reduced friction coefficient in the NPGU-G group also indicated that the smaller emulsion droplets contributed to the gel quality and mouth lubrication. Consequently, this study demonstrated that ultrasound-assisted cross-linked MP emulsion with smaller droplets can be successfully filled into gel structures, form a denser network structure, and improve the quality of the emulsion-filled gel.</p>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"112 ","pages":"107205"},"PeriodicalIF":8.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11718346/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}