Ultrasonics Sonochemistry最新文献_第6页

Accelerating maturation of Chinese rice wine by using a 20 L scale multi-sweeping-frequency mode ultrasonic reactor and its mechanism exploration 20 L多扫频超声反应器加速黄酒成熟及其机理探讨

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2025.107229

Zhuofan He , Furong Hou , Yansheng Du , Chunhua Dai , Ronghai He , Haile Ma

The formation of flavor in traditional Chinese rice wine requires a long aging process. To accelerate the maturation of rice wine, a 20 L scale multi-sweeping- frequency mode ultrasonic reactor was employed in this study to explore the promoting effects. Rice wines were subjected under 10 combined types of sonication treatments with 20/28/40 kHz in single/double/triple frequencies, and in fixed or sweeping modes, respectively. Then samples were aged in room temperature for up to 180 days. A 7.3 % increase of total esters content was observed in rice wine sample after treated by a fixed 40 kHz ultrasonication with 50 W/L intensity at 30 °C for 15 min, compared with the untreated sample. After sonication and stored for six months, 286.78 % increase of the volatile esters was found, compared to rice wine without ultrasoinc treatment and stored at same condition for same time. And the total volatile alcohol substances and total volatile aldehydes in rice wine decreased by 12.95 % and 67.46 %, while the total volatile acids increased by 17.11 %, respectively. The research results also demonstrated that ultrasonic induced free radicals accounted for the variations of rice wine properties. And the correlation between the acoustic cavitation and the flavor formation was also observed.

中国传统米酒的风味形成需要一个漫长的陈酿过程。为了加速黄酒的成熟，本研究采用20 L规模的多扫频型超声反应器，探讨其促进作用。以20/28/40 kHz为频率，分别在单/双/三频率、固定模式和扫频模式下对黄酒进行10种组合超声处理。然后将样品在室温下陈化180天。经40 kHz、50 W/L强度、30℃、15 min的固定超声处理后的黄酒样品中总酯含量比未处理的黄酒样品提高了7.3%。经超声处理并保存6个月后，挥发性酯含量比未经超声处理并保存6个月的黄酒增加了286.78%。黄酒中总挥发性醇和总挥发性醛分别减少了12.95%和67.46%，总挥发性酸分别增加了17.11%。研究结果还表明，超声波诱导的自由基对黄酒性能的变化有一定的影响。并观察了声空化与风味形成的关系。

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引用次数: 0

Effects of hydrodynamic cavitation combined with snail enzyme treatment on the structure and functional properties of water-soluble dietary fiber in rice husks

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2025.107236

Zhigang Quan , Mingming Chen , Dongjie Zhang

In this study, we adopted the synergistic modification technology of hydrodynamic cavitation and snail enzyme, to improve the yield and activity of soluble dietary fibers (SDFs) of rice husk. The physicochemical properties, structural changes, and inhibition of α-glucosidase and α-amylase of SDFs were examined in vitro. This synergistic treatment significantly increased the yield of SDFs to 18.64 % ± 0.16 %, significantly reduced the particle size to 122.33 ± 0.26 nm, and significantly increased the specific surface area to 1.718 ± 0.002 m²/g. The absolute value of the zeta potential significantly increased to −36.39 ± 0.12 mV, indicating an excellent solution stability and gel-forming ability. At the same time, the water-holding, oil-holding, and swelling capacities were significantly enhanced, reaching 8.52 ± 0.09 g/g, 4.85 ± 0.29 g/g, and 7.29 ± 0.25 mL/g, respectively. Structural analysis showed that the synergistic treatment destroyed the fiber structure, produced a large number of small molecule fragments, and significantly changed the monosaccharide components and functional group distribution. Functional evaluation showed that the inhibitory effect of CE-SDF on α-glucosidase and α-amylase was significantly enhanced, and enzymatic reaction kinetic analysis revealed that both enzymes were competitive inhibitors, with IC₅₀ values of 2.893 and 1.727 mg/mL, respectively. In summary, the synergistic modification of hydrodynamic cavitation and snail enzyme greatly optimized the structural and functional properties of rice husk SDFs, providing a theoretical basis for its application in the field of hypoglycemic drugs and functional foods.

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引用次数: 0

Impact of power ultrasound on the quality of leafy green produce through a multifrequency, multimode, modulated system 通过多频、多模、调制系统研究功率超声对绿叶农产品品质的影响

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2024.107221

Bin Zhou , J. Atilio de Frias , Yaguang Luo , Jorge M. Fonseca , Hao Feng

Ultrasound technology has been increasingly explored as an eco-friendly method to improve the microbial safety of leafy greens. However, its effect on produce quality is critical, and considerable knowledge gaps remain in this area. The present study examined the response of leafy greens to ultrasound treatment as shown by tissue damage and sensory quality, using a novel multifrequency, multimode, modulated (MMM) system to address the issue of nonuniform ultrasound field distribution. Iceberg lettuce, romaine lettuce, spinach, loose leaf lettuce and Lollo Rosso were subjected to different ultrasonication durations (1–16 min) in a MMM tubular treatment unit at 34 kHz and subsequently stored at 1 °C for three weeks. Sensory evaluations by a trained panel and electro-conductivity rate measurements were conducted to assess produce quality over time. Ultrasound treatment at an acoustic power density below 80 W/L had no significant effect (P > 0.05) on the overall sensory quality of leafy greens during 14 days of storage. Even though the electro-conductivity rate, an indicator of tissue damage, increased in ultrasound-treated samples compared to control, it did not result in perceptible changes in sensory attributes.

超声技术作为一种提高绿叶蔬菜微生物安全性的环保方法已得到越来越多的探索。然而，它对农产品质量的影响是至关重要的，在这一领域仍存在相当大的知识缺口。本研究利用一种新的多频、多模、调制（MMM）系统来解决超声场分布不均匀的问题，研究了绿叶蔬菜对超声处理的组织损伤和感觉质量的反应。卷心莴苣、长叶莴苣、菠菜、散叶莴苣和罗索莴苣在MMM管状处理装置中进行不同的超声处理时间（1 - 16分钟），频率为34 kHz，随后在1°C下保存3周。经过训练的小组进行感官评估和电导率测量，以评估产品质量随时间的变化。声功率密度低于80 W/L的超声处理效果不显著(P >；0.05)对贮藏14 d绿叶蔬菜整体感官品质的影响。尽管与对照组相比，超声处理的样品的电导率（组织损伤的指标）有所增加，但它并没有导致感官属性的明显变化。

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引用次数: 0

Piezocatalysis-combined advanced oxidation processes for organic pollutant degradation in water system 压电催化联合高级氧化工艺降解水系统中有机污染物。

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2024.107219

Heejin Yang , Chang-Gu Lee , Jechan Lee

The piezoelectric catalyst process has emerged as a promising technology for energy harvesting, effectively converting natural mechanical energies, such as wind, water flow, and waves, into usable electrical energy using piezoelectric materials. In recent years, there has been a growing interest in applying this technology to water treatment to address environmental challenges. Concurrently, research efforts have focused on enhancing the efficiency of piezoelectric catalysis by integrating it with advanced oxidation processes (AOPs). This combination has demonstrated significantly better performance than traditional single-process methods. This review offers a comprehensive overview of the fundamental principles of piezocatalysis and explores the evolution of research in this field. It provides a detailed analysis of how piezocatalysis has been developed and applied, particularly in water treatment. The review also includes a comparative assessment of various processes used to remove organic pollutants from water, focusing on recent advancements that combine piezocatalysis with AOPs. Furthermore, the limitations of the current research were discussed, and future research directions were suggested based on the overall findings. By summarizing the progress and challenges in this area, the review aims to provide valuable insights and guide future studies to enhance the effectiveness and application of piezoelectric catalysis in environmental remediation.

压电催化剂工艺已经成为一种很有前途的能量收集技术，利用压电材料有效地将自然机械能（如风、水流和波浪）转化为可用的电能。近年来，人们对将该技术应用于水处理以应对环境挑战越来越感兴趣。与此同时，研究的重点是通过将压电催化与高级氧化过程（AOPs）相结合来提高其效率。与传统的单流程方法相比，这种组合已经证明了更好的性能。本文综述了压电催化的基本原理，并探讨了该领域的研究进展。它提供了一个详细的分析，如何开发和应用压电催化，特别是在水处理。该综述还包括对用于去除水中有机污染物的各种工艺的比较评估，重点是将压电催化与AOPs相结合的最新进展。最后，讨论了目前研究的局限性，并在此基础上提出了未来的研究方向。通过对这一领域的研究进展和面临的挑战进行总结，旨在为今后的研究提供有价值的见解和指导，以提高压电催化在环境修复中的有效性和应用。

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引用次数: 0

The accurate determination of Perfluorooctane sulfonic acid (PFOS) removal efficiency by integrated-sonochemical system 集成声化学系统对全氟辛烷磺酸（PFOS）去除率的精确测定。

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2025.107222

Debabrata Panda , Maxime Cochennec , Stéfan Colombano , Benjamin Laulier , Pascal Tierce , Alexandre Baudouard , Sebastian Bristeau , Anne Togola , Julie Lions , Nicolas Devau , Eric D. van Hullebusch

Perfluorooctanesulfonic acid (PFOS) is one of the most investigated Per- and polyfluoroalkyl substances (PFAS) for being the strongest compound to eliminate and having adverse health concerns. In this work, we have conducted the sonochemical treatment of PFOS simulated water under high (500 kHz) and low (22 kHz) frequencies while monitoring the operational parameters via an integrated sonochemical system. The integrated advanced sonochemical system includes software to monitor treatment power, solution temperature and frequency while allowing distinctive control of the reaction conditions. Considering the lack of calorimetric measurements in earlier studies and the difficulty in achieving comparative outcomes, precise calorimetric measurements and determination of electrical energy per order (E_EO) were performed in this study. The complete PFOS removal was achieved under 500 kHz frequency with optimum parameters including initial pollutant concentration (5 mg/L), ultrasound power density (400 W/L) and solution temperature (25 °C) within 180 min of treatment. The removal and mineralization extents (defluorination) were determined by ultra-high performance liquid chromatography–mass spectrometry (UPLC-MS/MS) and ion-chromatography (IC) analysis. Under optimum conditions, 100 % removal and 99 % mineralization were achieved. The rate constant (k) ranged from 0.011 to 0.031

{m i n}^{- 1}

(first-order reaction), which increased with the increase in the power density. While the solution temperature did not significantly affect the PFOS removal efficiency, the initial concentration was found to have a prominent effect on the reaction rate constant. However, experiments at low frequency (22 kHz) showed negligible removal efficiency. The specific energy requirement for reaching 90 % removal while considering the power consumed by the ultrasonic system from the main electrical source was determined to be 700

k W h / m^{3}

, which is much lower than other reported work under similar conditions. This work will be useful for both laboratory and industrial upscaling while acting as a benchmark reference to follow.

全氟辛烷磺酸（PFOS）是研究最多的全氟烷基和多氟烷基物质（PFAS）之一，因为它是最强的化合物，可以消除并对健康产生不利影响。在这项工作中，我们在高（500 kHz）和低（22 kHz）频率下对全氟辛烷磺酸模拟水进行了声化学处理，同时通过集成声化学系统监测操作参数。集成的先进声化学系统包括监控处理功率、溶液温度和频率的软件，同时允许对反应条件进行独特的控制。考虑到早期研究中缺乏量热测量以及难以获得比较结果，本研究中进行了精确的量热测量和每阶电能（EEO）的测定。在500 kHz频率下，最佳参数为初始污染物浓度（5 mg/L）、超声功率密度（400 W/L）和溶液温度（25°C），处理时间为180 min，可完全去除PFOS。采用超高效液相色谱-质谱联用（UPLC-MS/MS）和离子色谱联用（IC）法测定去除率和矿化程度（除氟）。在最佳条件下，废水去除率达到100%，矿化率达到99%。反应速率常数(k)为0.011 ~ 0.031 min-1（一级反应），随功率密度的增大而增大。虽然溶液温度对PFOS去除率没有显著影响，但初始浓度对反应速率常数有显著影响。然而，在低频率（22 kHz）的实验中，去除效率可以忽略不计。考虑到超声波系统从主电源消耗的功率，达到90%去除率的比能量要求确定为700 kWh/m3，这远远低于类似条件下其他报道的工作。这项工作将有助于实验室和工业升级，同时作为基准参考遵循。

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引用次数: 0

Utilizing ultrasound for the extraction of polysaccharides from the tuber of Typhonium giganteum Engl.: Extraction conditions, structural characterization and bioactivities

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2025.107243

Xi Peng , Jing-Ya Wang , Kui-Xu Gao, Zhi-Kun Wang, Qiao-Ling Deng, Yao Wang, Mei-Bian Hu, Yu-Jie Liu

Polysaccharides from the dried tuber of Typhonium giganteum Engl. (TGEPs) were obtained by utilizing ultrasonic-assisted extraction (UAE) as the extraction method. The determination of optimal process parameters for the UAE of TGEPs (TGEP-U) was accomplished through the application of response surface methodology (RSM). The structural characteristics, antioxidant and hypoglycemic effects of TGEP-U and TGEPs obtained by hot water extraction (TGEP-H) were then compared. Consequently, the optimum extraction conditions predicted by RSM for TGEP-U were obtained as adding water at a ratio of 31 mL/g and extracted for 32 min under an ultrasound power of 440 W. In the verification experiment, the actual yield of TGEP-U was 7.32 ± 0.18 %. It was found that UAE could increase the yield and the total sugar content of TGEPs. Meanwhile, chemical composition analysis showed that both TGEP-U and TGEP-H were mainly composed of mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, arabinose, and fucose, but the monosaccharide molar ratios were changed by UAE. Analysis of molecular weight (Mw) revealed the presence of three primary constituents within TGEP-U, and four main components in TGEP-H, and UAE reduced the average Mw of TGEPs. No obvious difference was found in the Fourier transform infrared spectroscopy analysis of TGEP-U and TGEP-H. The Congo red and Circular dichroism tests demonstrated that TGEP-U and TGEP-H had non-three helical structure. Scanning electron microscope observation further revealed that the aggregation of functional groups within TGEPs may be influenced by ultrasound, thereby affecting their powder morphology. TGEP-U has slightly poorer thermal stability than TGEP-H, which may be affected by ultrasonic cavitation effects. The results also indicated that TGEP-U had better antioxidant and hypoglycemic activity than TGEP-H. In summary, UAE is an effective method to extract and enhance the activity of TGEPs with enormous research value and potentials.

{"title":"Utilizing ultrasound for the extraction of polysaccharides from the tuber of Typhonium giganteum Engl.: Extraction conditions, structural characterization and bioactivities","authors":"Xi Peng , Jing-Ya Wang , Kui-Xu Gao, Zhi-Kun Wang, Qiao-Ling Deng, Yao Wang, Mei-Bian Hu, Yu-Jie Liu","doi":"10.1016/j.ultsonch.2025.107243","DOIUrl":"10.1016/j.ultsonch.2025.107243","url":null,"abstract":"<div><div>Polysaccharides from the dried tuber of <em>Typhonium giganteum</em> Engl. (TGEPs) were obtained by utilizing ultrasonic-assisted extraction (UAE) as the extraction method. The determination of optimal process parameters for the UAE of TGEPs (TGEP-U) was accomplished through the application of response surface methodology (RSM). The structural characteristics, antioxidant and hypoglycemic effects of TGEP-U and TGEPs obtained by hot water extraction (TGEP-H) were then compared. Consequently, the optimum extraction conditions predicted by RSM for TGEP-U were obtained as adding water at a ratio of 31 mL/g and extracted for 32 min under an ultrasound power of 440 W. In the verification experiment, the actual yield of TGEP-U was 7.32 ± 0.18 %. It was found that UAE could increase the yield and the total sugar content of TGEPs. Meanwhile, chemical composition analysis showed that both TGEP-U and TGEP-H were mainly composed of mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, arabinose, and fucose, but the monosaccharide molar ratios were changed by UAE. Analysis of molecular weight (Mw) revealed the presence of three primary constituents within TGEP-U, and four main components in TGEP-H, and UAE reduced the average Mw of TGEPs. No obvious difference was found in the Fourier transform infrared spectroscopy analysis of TGEP-U and TGEP-H. The Congo red and Circular dichroism tests demonstrated that TGEP-U and TGEP-H had non-three helical structure. Scanning electron microscope observation further revealed that the aggregation of functional groups within TGEPs may be influenced by ultrasound, thereby affecting their powder morphology. TGEP-U has slightly poorer thermal stability than TGEP-H, which may be affected by ultrasonic cavitation effects. The results also indicated that TGEP-U had better antioxidant and hypoglycemic activity than TGEP-H. In summary, UAE is an effective method to extract and enhance the activity of TGEPs with enormous research value and potentials.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"113 ","pages":"Article 107243"},"PeriodicalIF":8.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143045283","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}

引用次数: 0

Process, dynamics and bioeffects of acoustic droplet vaporization induced by dual-frequency focused ultrasound

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2025.107234

Yubo Zhao, Yi Feng, Liang Wu

Acoustic droplet vaporization (ADV) plays a crucial role in ultrasound-related biomedical applications. While previous models have examined the stages of nucleation, growth, and oscillation in isolation, which may limit their ability to fully describe the entire ADV process. To address this, our study developed an integrated model that unifies these three stages of ADV, stimulated by a continuous nonlinear dual-frequency ultrasound wave. Using this integrated model, we investigated the influence of nonlinear dual-frequency ultrasound parameters on ADV dynamics and bioeffects by incorporating tissue viscoelasticity through parametric studies. Our results demonstrated that the proposed model accurately captured the entire ADV process, ensuring continuous vapor bubble formation and evolution throughout the phase transition process. Moreover, the applied unified theory for bubble dynamics can simulate intense bubble collapse with high Mach Number as a result of the nonlinear effects of dual-frequency ultrasound. In addition, cavitation-associated mechanical and thermal damage appeared to be more strongly correlated with rapid bubble collapse than with maximum bubble size. Our research also revealed that the mechanical and thermal effects could be regulated independently to some extent by adjusting dual-frequency ultrasound parameters, as they presented differing sensitivities to frequency and acoustic power. Importantly, dual-frequency combinations such as 1.5 MHz + 3 MHz (fundamental and second harmonic), which exhibit a higher Degree of Nonlinearity (DoN) can extend bubble lifespan, offering a potential pathway to the efficacy of ultrasound treatments.

{"title":"Process, dynamics and bioeffects of acoustic droplet vaporization induced by dual-frequency focused ultrasound","authors":"Yubo Zhao, Yi Feng, Liang Wu","doi":"10.1016/j.ultsonch.2025.107234","DOIUrl":"10.1016/j.ultsonch.2025.107234","url":null,"abstract":"<div><div>Acoustic droplet vaporization (ADV) plays a crucial role in ultrasound-related biomedical applications. While previous models have examined the stages of nucleation, growth, and oscillation in isolation, which may limit their ability to fully describe the entire ADV process. To address this, our study developed an integrated model that unifies these three stages of ADV, stimulated by a continuous nonlinear dual-frequency ultrasound wave. Using this integrated model, we investigated the influence of nonlinear dual-frequency ultrasound parameters on ADV dynamics and bioeffects by incorporating tissue viscoelasticity through parametric studies. Our results demonstrated that the proposed model accurately captured the entire ADV process, ensuring continuous vapor bubble formation and evolution throughout the phase transition process. Moreover, the applied unified theory for bubble dynamics can simulate intense bubble collapse with high Mach Number as a result of the nonlinear effects of dual-frequency ultrasound. In addition, cavitation-associated mechanical and thermal damage appeared to be more strongly correlated with rapid bubble collapse than with maximum bubble size. Our research also revealed that the mechanical and thermal effects could be regulated independently to some extent by adjusting dual-frequency ultrasound parameters, as they presented differing sensitivities to frequency and acoustic power. Importantly, dual-frequency combinations such as 1.5 MHz + 3 MHz (fundamental and second harmonic), which exhibit a higher Degree of Nonlinearity (DoN) can extend bubble lifespan, offering a potential pathway to the efficacy of ultrasound treatments.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"113 ","pages":"Article 107234"},"PeriodicalIF":8.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027356","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}

引用次数: 0

Functional nanocrystal as effective contrast agents for dual-mode imaging: Live-cell sonoluminescence and contrast-enhanced echography

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2025.107242

V. Vighetto , E. Pascucci , N.M. Percivalle , A. Troia , K.M. Meiburger , M.R.P. van den Broek , T. Segers , V. Cauda

In the context of molecular imaging, the present work explores an innovative platform made of lipid-coated nanocrystals as contrast-enhanced agent for both ultrasound imaging and sonoluminescence. At first, the dynamics of gas bubbles generation and cavitation under insonation with either pristine or lipid-coated nanocrystals (ZnO-Lip) are described, and the differences between the two colloidal systems are highlighted. These ZnO-Lip show an unprecedented ability to assist cavitation, which is reflected in enhanced sonoluminescent light emission with respect to the pristine nanocrystals or the pure water. Highly defined and sharp sonoluminescent images of cultured cells are indeed obtained, for the first time, when ZnO-Lip are used. Furthermore, ZnO-Lip were adopted as a nanosized agent for contrast-enhanced ultrasound imaging, i.e. echography, first in solutions, and then on ex-vivo tissues. A prolonged over time and bright imaging effect is observed when adopting the developed nanoparticles. Furthermore, their nanometric size and potential targeting with biomolecules would allow ease extravasation and tissue or even cell penetration, achieving enhanced-contrast imaging. Finally, the stimuli-responsive therapeutic applications of ZnO-Lip against tumors is overviewed, aiming to achieve a fully theranostic approach.

{"title":"Functional nanocrystal as effective contrast agents for dual-mode imaging: Live-cell sonoluminescence and contrast-enhanced echography","authors":"V. Vighetto , E. Pascucci , N.M. Percivalle , A. Troia , K.M. Meiburger , M.R.P. van den Broek , T. Segers , V. Cauda","doi":"10.1016/j.ultsonch.2025.107242","DOIUrl":"10.1016/j.ultsonch.2025.107242","url":null,"abstract":"<div><div>In the context of molecular imaging, the present work explores an innovative platform made of lipid-coated nanocrystals as contrast-enhanced agent for both ultrasound imaging and sonoluminescence. At first, the dynamics of gas bubbles generation and cavitation under insonation with either pristine or lipid-coated nanocrystals (ZnO-Lip) are described, and the differences between the two colloidal systems are highlighted. These ZnO-Lip show an unprecedented ability to assist cavitation, which is reflected in enhanced sonoluminescent light emission with respect to the pristine nanocrystals or the pure water. Highly defined and sharp sonoluminescent images of cultured cells are indeed obtained, for the first time, when ZnO-Lip are used. Furthermore, ZnO-Lip were adopted as a nanosized agent for contrast-enhanced ultrasound imaging, i.e. echography, first in solutions, and then on ex-vivo tissues. A prolonged over time and bright imaging effect is observed when adopting the developed nanoparticles. Furthermore, their nanometric size and potential targeting with biomolecules would allow ease extravasation and tissue or even cell penetration, achieving enhanced-contrast imaging. Finally, the stimuli-responsive therapeutic applications of ZnO-Lip against tumors is overviewed, aiming to achieve a fully theranostic approach.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"113 ","pages":"Article 107242"},"PeriodicalIF":8.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057648","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}

引用次数: 0

Ultrasound-assisted enzyme extraction of Dendrobium Officinale polysaccharides: Extraction process, characterization, immunomodulatory effects

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2025.107248

Hengpu Zhou , Yingjie Dong , Zhangyun Wu , Xi Peng, Meiqiu Yan, Suhong Chen, Guiyuan Lv

Dendrobium Officinale is a traditional Chinese medicinal and edible herb, and polysaccharides being its principal active components. We employed ultrasonic-assisted enzymatic extraction to obtain polysaccharides from Dendrobium Officinale (DOP) and optimized the extraction process using the GA-BP method. Subsequently, DOP was characterized using HPLC, SEM, and HPGPC. Finally, an immunocompromised mouse model induced by cyclophosphamide was adopted to evaluate the immunomodulatory effects. The results showed that the optimal extraction process of ultrasound-assisted enzyme method was 102 min ultrasonic extraction time, 48 °C extraction temperature, 1:80 material-liquid ratio, and 1600 U/g enzyme additions. The predicted polysaccharide yield was 29.64 %, and the actual polysaccharide yield was 29.71 ± 0.31 %. DOP is a white powder with pore-like structure, whose polysaccharide content is 90.66 ± 2.47 %, and with a composition of D-mannose, glucose, galactose, arabinose in a molar ratio of 74.17: 47.80: 9.03: 1. DOP has demonstrated the ability to improve the general condition of mice with cyclophosphamide-induced immunosuppression. It mitigates damage to the thymus and spleen tissues, increases white blood cell counts, regulates the ratio of T lymphocytes and the levels of related factors, enhances macrophage phagocytic function to improve nonspecific immune responses, and boosts the levels of immunoglobulins IgA and IgG to enhance specific immune function. Therefore, DOP can alleviate immunosuppression induced by cyclophosphamide.

{"title":"Ultrasound-assisted enzyme extraction of Dendrobium Officinale polysaccharides: Extraction process, characterization, immunomodulatory effects","authors":"Hengpu Zhou , Yingjie Dong , Zhangyun Wu , Xi Peng, Meiqiu Yan, Suhong Chen, Guiyuan Lv","doi":"10.1016/j.ultsonch.2025.107248","DOIUrl":"10.1016/j.ultsonch.2025.107248","url":null,"abstract":"<div><div>Dendrobium Officinale is a traditional Chinese medicinal and edible herb, and polysaccharides being its principal active components. We employed ultrasonic-assisted enzymatic extraction to obtain polysaccharides from Dendrobium Officinale (DOP) and optimized the extraction process using the GA-BP method. Subsequently, DOP was characterized using HPLC, SEM, and HPGPC. Finally, an immunocompromised mouse model induced by cyclophosphamide was adopted to evaluate the immunomodulatory effects. The results showed that the optimal extraction process of ultrasound-assisted enzyme method was 102 min ultrasonic extraction time, 48 °C extraction temperature, 1:80 material-liquid ratio, and 1600 U/g enzyme additions. The predicted polysaccharide yield was 29.64 %, and the actual polysaccharide yield was 29.71 ± 0.31 %. DOP is a white powder with pore-like structure, whose polysaccharide content is 90.66 ± 2.47 %, and with a composition of D-mannose, glucose, galactose, arabinose in a molar ratio of 74.17: 47.80: 9.03: 1. DOP has demonstrated the ability to improve the general condition of mice with cyclophosphamide-induced immunosuppression. It mitigates damage to the thymus and spleen tissues, increases white blood cell counts, regulates the ratio of T lymphocytes and the levels of related factors, enhances macrophage phagocytic function to improve nonspecific immune responses, and boosts the levels of immunoglobulins IgA and IgG to enhance specific immune function. Therefore, DOP can alleviate immunosuppression induced by cyclophosphamide.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"114 ","pages":"Article 107248"},"PeriodicalIF":8.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169378","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}

引用次数: 0

Synchronized acoustic emission and high-speed imaging of cavitation-induced atomization: The role of shock waves

IF 8.7 1区化学 Q1 ACOUSTICS

Ultrasonics Sonochemistry

Pub Date : 2025-02-01 DOI: 10.1016/j.ultsonch.2025.107233

Abhinav Priyadarshi , Paul Prentice , Dmitry Eskin , Peter D. Lee , Iakovos Tzanakis

This study experimentally investigates the role of cavitation-induced shock waves in initiating and destabilizing capillary (surface) waves on a droplet surface, preceding atomization. Acoustic emissions and interfacial wave dynamics were simultaneously monitored in droplets of different liquids (water, isopropyl alcohol and glycerol), using a calibrated fiber-optic hydrophone and high-speed imaging. Spectral analysis of the hydrophone data revealed distinct subharmonic frequency peaks in the acoustic spectrum correlated with the wavelength of capillary waves, which were optically captured during the onset of atomization from the repetitive imploding bubbles. This finding provides the first direct evidence that the wavelength of the growing surface waves, which governs capillary instability resulting in droplet breakup, is linked to the periodicity of shock waves responsible for the onset of the subharmonic frequencies detected in the acoustic spectra. This work contributes to a deeper understanding of ultrasonic atomization, signifying the role of cavitation and shock waves in the atomization process.

{"title":"Synchronized acoustic emission and high-speed imaging of cavitation-induced atomization: The role of shock waves","authors":"Abhinav Priyadarshi , Paul Prentice , Dmitry Eskin , Peter D. Lee , Iakovos Tzanakis","doi":"10.1016/j.ultsonch.2025.107233","DOIUrl":"10.1016/j.ultsonch.2025.107233","url":null,"abstract":"<div><div>This study experimentally investigates the role of cavitation-induced shock waves in initiating and destabilizing capillary (surface) waves on a droplet surface, preceding atomization. Acoustic emissions and interfacial wave dynamics were simultaneously monitored in droplets of different liquids (water, isopropyl alcohol and glycerol), using a calibrated fiber-optic hydrophone and high-speed imaging. Spectral analysis of the hydrophone data revealed distinct subharmonic frequency peaks in the acoustic spectrum correlated with the wavelength of capillary waves, which were optically captured during the onset of atomization from the repetitive imploding bubbles. This finding provides the first direct evidence that the wavelength of the growing surface waves, which governs capillary instability resulting in droplet breakup, is linked to the periodicity of shock waves responsible for the onset of the subharmonic frequencies detected in the acoustic spectra. This work contributes to a deeper understanding of ultrasonic atomization, signifying the role of cavitation and shock waves in the atomization process.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"113 ","pages":"Article 107233"},"PeriodicalIF":8.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027640","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}

引用次数: 0