Pub Date : 2024-11-17DOI: 10.1016/j.ultsonch.2024.107147
Ioan Calinescu, Mircea Vinatoru, Daniela Ghimpețeanu, Vasile Lavric, Timothy J Masom, Anamaria Vartolomei
{"title":"Corrigendum to \"A new reactor for process intensification involving the simultaneous application of adjustable ultrasound and microwave radiation\" [Ultrason. Sonochem. 77 (2021) 105701].","authors":"Ioan Calinescu, Mircea Vinatoru, Daniela Ghimpețeanu, Vasile Lavric, Timothy J Masom, Anamaria Vartolomei","doi":"10.1016/j.ultsonch.2024.107147","DOIUrl":"10.1016/j.ultsonch.2024.107147","url":null,"abstract":"","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":" ","pages":"107147"},"PeriodicalIF":8.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1016/j.ultsonch.2024.107158
Ke Yang , Tao-hong Han , Yi-jun Liu , Jia-ning Zhang , Ping Zhou , Xiao-ping Yu
The quality of Chinese herbal medicines is the key to the quality of traditional Chinese medicine. The processing of Chinese herbal medicines is an important part of the production and quality formation of medicinal materials. Traditional processing methods have low productivity and cannot guarantee the quality of Chinese herbal medicines. Among various non-thermal processing methods, ultrasonic technology has been proved to be a very valuable green processing technology. This paper will discuss the application of ultrasonic technology in the production and processing of Chinese herbal medicines in recent years, including the extraction, cleaning, drying and sterilization of effective components of Chinese herbal medicines. This review summarizes its principle, characteristics and application progress in recent years, and discusses its existing problems. The effects of ultrasound on the chemical structure and biological activity of bioactive compounds extracted from Chinese herbal medicines are mainly introduced. In addition, this paper discusses the effects of different ultrasonic conditions such as frequency, power, time and temperature on the chemical properties and processing of Chinese herbal medicines. In general, the use of ultrasound in the production and processing of Chinese herbal medicines has great application potential.
{"title":"Application progress of ultrasound in the production and processing of traditional Chinese herbal medicines","authors":"Ke Yang , Tao-hong Han , Yi-jun Liu , Jia-ning Zhang , Ping Zhou , Xiao-ping Yu","doi":"10.1016/j.ultsonch.2024.107158","DOIUrl":"10.1016/j.ultsonch.2024.107158","url":null,"abstract":"<div><div>The quality of Chinese herbal medicines is the key to the quality of traditional Chinese medicine. The processing of Chinese herbal medicines is an important part of the production and quality formation of medicinal materials. Traditional processing methods have low productivity and cannot guarantee the quality of Chinese herbal medicines. Among various non-thermal processing methods, ultrasonic technology has been proved to be a very valuable green processing technology. This paper will discuss the application of ultrasonic technology in the production and processing of Chinese herbal medicines in recent years, including the extraction, cleaning, drying and sterilization of effective components of Chinese herbal medicines. This review summarizes its principle, characteristics and application progress in recent years, and discusses its existing problems. The effects of ultrasound on the chemical structure and biological activity of bioactive compounds extracted from Chinese herbal medicines are mainly introduced. In addition, this paper discusses the effects of different ultrasonic conditions such as frequency, power, time and temperature on the chemical properties and processing of Chinese herbal medicines. In general, the use of ultrasound in the production and processing of Chinese herbal medicines has great application potential.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"111 ","pages":"Article 107158"},"PeriodicalIF":8.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661548","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}
Pub Date : 2024-11-12DOI: 10.1016/j.ultsonch.2024.107154
Shunyao Luan , Yongshuo Ji , Yumei Liu , Linling Zhu , Hong Zhao , Haoyu Zhou , Ke Li , Weizhen Zhu , Benpeng Zhu
High-intensity focused ultrasound (HIFU) is considered as an important non-invasive way for tumor ablation in deep organs. However, accurate real-time monitoring of the temperature field within HIFU focal area remains a challenge. Although ultrasound technology, compared with other approaches, is a good choice for noninvasive and real-time monitoring on the temperature distribution, traditional ultrasonic thermometry mainly relies on the backscattered signal, which is difficult for high temperature (>50 °C) measurement. Given that artificial intelligence (AI) shows significant potential for biomedical applications, we propose an AI-powered ultrasonic thermometry using an end-to-end deep neural network termed Breath-guided Multimodal Teacher-Student (BMTS), which possesses the capability to elucidate the interaction between HIFU and complex heterogeneous biological media. It has been demonstrated experimentally that two-dimension temperature distribution within HIFU focal area in deep organ can be accurately reconstructed with an average error and a frame speed of 0.8 °C and 0.37 s, respectively. Most importantly, the maximum measurable temperature for ultrasonic technology has been successfully expanded to a record value of 67 °C. This breakthrough indicates that the development of AI-powered ultrasonic thermometry is beneficial for precise HIFU therapy planning in the future.
{"title":"AI-powered ultrasonic thermometry for HIFU therapy in deep organ","authors":"Shunyao Luan , Yongshuo Ji , Yumei Liu , Linling Zhu , Hong Zhao , Haoyu Zhou , Ke Li , Weizhen Zhu , Benpeng Zhu","doi":"10.1016/j.ultsonch.2024.107154","DOIUrl":"10.1016/j.ultsonch.2024.107154","url":null,"abstract":"<div><div>High-intensity focused ultrasound (HIFU) is considered as an important non-invasive way for tumor ablation in deep organs. However, accurate real-time monitoring of the temperature field within HIFU focal area remains a challenge. Although ultrasound technology, compared with other approaches, is a good choice for noninvasive and real-time monitoring on the temperature distribution, traditional ultrasonic thermometry mainly relies on the backscattered signal, which is difficult for high temperature (>50 °C) measurement. Given that artificial intelligence (AI) shows significant potential for biomedical applications, we propose an AI-powered ultrasonic thermometry using an end-to-end deep neural network termed Breath-guided Multimodal Teacher-Student (BMTS), which possesses the capability to elucidate the interaction between HIFU and complex heterogeneous biological media. It has been demonstrated experimentally that two-dimension temperature distribution within HIFU focal area in deep organ can be accurately reconstructed with an average error and a frame speed of 0.8 °C and 0.37 s, respectively. Most importantly, the maximum measurable temperature for ultrasonic technology has been successfully expanded to a record value of 67 °C. This breakthrough indicates that the development of AI-powered ultrasonic thermometry is beneficial for precise HIFU therapy planning in the future.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"111 ","pages":"Article 107154"},"PeriodicalIF":8.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643396","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}
Pub Date : 2024-11-12DOI: 10.1016/j.ultsonch.2024.107153
Yan-rong Ma , Yong-qiang Xu , Wen Guo , Yi-lin Shi , Yue Wu , Zhi-gang Chen
Millet protein, as a promising plant-based protein substitute source, is an excellent basis for essential amino acids compared to commonly consumed staple grains. Compared with the traditional extraction process, ultrasound has been used to enhance the extraction efficiency of various plant-based proteins. To reveal the mechanism of ultrasound-enhanced extraction of proteins, adaptive neuro-fuzzy inference system (ANFIS) algorithm and numerical simulation based on Fick’s law were applied to illustrate the mass transfer behavior of millet proteins under different ultrasonic conditions including solid–liquid ratios (S/L ratios), pH and acoustic energy density levels (AED). The results showed that AED dominated the changes in effective diffusion coefficient (), showing a positive correlation relationship (p < 0.05). Specifically, when the AED was 47.07 W/cm2, the value increased by 95% compared to that of 23.47 W/cm2. Meanwhile, the ANFIS model successfully predicted protein yields across all investigated parameters, achieving a coefficient of determination (R2) greater than 0.97. This model also elucidated the interactions among four critical factors, among which pH and S/L ratios were the main factors affecting protein yield. Concerning the ultrasonic cavitation bubble dynamics, the bubble collapse efficiency enhanced with an increase in AED, and therefore high AED ultrasound can significantly enhance the cavitation effect. Additionally, the results of the yields and physical properties of millet protein also indicated that in contrast with the traditional extraction methods, the ultrasound impactfully improved extraction yield (by 165%), and combined with pH condition, it decreased the protein particle size (from 813.55 nm to 299.30 nm) without altering the molecular weight distribution. This study offers a novel perspective on the mechanism underlying ultrasound-enhanced protein extraction, drawing upon principles of ultrasonics and extraction processes. The insights gained can serve as a foundation for the food industry to upscale the extraction process, potentially enhancing efficiency and yield.
{"title":"Combined ANFIS and numerical methods to reveal the mass transfer mechanism of ultrasound-enhanced extraction of proteins from millet","authors":"Yan-rong Ma , Yong-qiang Xu , Wen Guo , Yi-lin Shi , Yue Wu , Zhi-gang Chen","doi":"10.1016/j.ultsonch.2024.107153","DOIUrl":"10.1016/j.ultsonch.2024.107153","url":null,"abstract":"<div><div>Millet protein, as a promising plant-based protein substitute source, is an excellent basis for essential amino acids compared to commonly consumed staple grains. Compared with the traditional extraction process, ultrasound has been used to enhance the extraction efficiency of various plant-based proteins. To reveal the mechanism of ultrasound-enhanced extraction of proteins, adaptive neuro-fuzzy inference system (ANFIS) algorithm and numerical simulation based on Fick’s law were applied to illustrate the mass transfer behavior of millet proteins under different ultrasonic conditions including solid–liquid ratios (S/L ratios), pH and acoustic energy density levels (AED). The results showed that AED dominated the changes in effective diffusion coefficient (<span><math><mrow><msub><mi>D</mi><mi>e</mi></msub></mrow></math></span>), showing a positive correlation relationship (<em>p</em> < 0.05). Specifically, when the AED was 47.07 W/cm<sup>2</sup>, the <span><math><mrow><msub><mi>D</mi><mi>e</mi></msub></mrow></math></span> value increased by 95% compared to that of 23.47 W/cm<sup>2</sup>. Meanwhile, the ANFIS model successfully predicted protein yields across all investigated parameters, achieving a coefficient of determination (R<sup>2</sup>) greater than 0.97. This model also elucidated the interactions among four critical factors, among which pH and S/L ratios were the main factors affecting protein yield. Concerning the ultrasonic cavitation bubble dynamics, the bubble collapse efficiency enhanced with an increase in AED, and therefore high AED ultrasound can significantly enhance the cavitation effect. Additionally, the results of the yields and physical properties of millet protein also indicated that in contrast with the traditional extraction methods, the ultrasound impactfully improved extraction yield (by 165%), and combined with pH condition, it decreased the protein particle size (from 813.55 nm to 299.30 nm) without altering the molecular weight distribution. This study offers a novel perspective on the mechanism underlying ultrasound-enhanced protein extraction, drawing upon principles of ultrasonics and extraction processes. The insights gained can serve as a foundation for the food industry to upscale the extraction process, potentially enhancing efficiency and yield.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"111 ","pages":"Article 107153"},"PeriodicalIF":8.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643428","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}
The ultrasonic micromachining systems significantly improve machining efficiency and quality, which are increasingly being applied in the manufacturing of microstructures and micro parts. However, the mechanical and thermal loads of the high-frequency piezoelectric ultrasonic transducer (HPUT) of ultrasonic micromachining systems have serious interference with the precise control of resonance frequency tracking, which further causes uncontrollable processing quality and precision. To improve the controllability of resonance frequency tracking, a thermo-mechanical coupling load model for HPUTs is proposed to establish the relationship between the resonance frequency and thermo-mechanical coupling load by introducing the force load constants and thermal load constants into the 6-terminal network electromechanical equivalent circuit. The experimental results show that the proposed thermo-mechanical coupling load model can accurately predict the trend of the resonance frequency when the thermo-mechanical coupling load is under the axial force range of 0–10 N and temperature range of 35–60°C.
{"title":"A thermo-mechanical coupling load model for high-frequency piezoelectric ultrasonic transducer","authors":"Kuan Zhang, Guofu Gao , Wenbin Ma, Ruikang Li, Daohui Xiang, Junjin Ma","doi":"10.1016/j.ultsonch.2024.107148","DOIUrl":"10.1016/j.ultsonch.2024.107148","url":null,"abstract":"<div><div>The ultrasonic micromachining systems significantly improve machining efficiency and quality, which are increasingly being applied in the manufacturing of microstructures and micro parts. However, the mechanical and thermal loads of the high-frequency piezoelectric ultrasonic transducer (HPUT) of ultrasonic micromachining systems have serious interference with the precise control of resonance frequency tracking, which further causes uncontrollable processing quality and precision. To improve the controllability of resonance frequency tracking, a thermo-mechanical coupling load model for HPUTs is proposed to establish the relationship between the resonance frequency and thermo-mechanical coupling load by introducing the force load constants and thermal load constants into the 6-terminal network electromechanical equivalent circuit. The experimental results show that the proposed thermo-mechanical coupling load model can accurately predict the trend of the resonance frequency when the thermo-mechanical coupling load is under the axial force range of 0–10 N and temperature range of 35–60°C.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"111 ","pages":"Article 107148"},"PeriodicalIF":8.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637430","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}
Pub Date : 2024-11-09DOI: 10.1016/j.ultsonch.2024.107149
Olga Kudryashova , Andrey Shalunov , Sergey Terentiev , Vladimir Khmelev
Liquid atomization is utilized across various industrial applications, including nanopowder production, spray drying, fuel combustion, coating applications, emulsion preparation, and in medical devices. The use of ultrasonic energy for atomization offers advantages in terms of environmental sustainability compared to other methods. Notably, ultrasonic atomization can achieve finer dispersion with a narrow droplet size distribution at relatively low energy consumption, which is crucial for certain technological applications. One significant application of fine liquid atomization technology is in the disinfection of air and surfaces. The development of efficient and eco-friendly methods for air and surface disinfection has become particularly relevant in light of the spread of dangerous infections, such as the coronavirus. However, ultrasonic liquid atomization is characterized by low flow rate, limiting its applicability. The creation of a combined method that integrates the benefits of both ultrasonic and hydraulic atomization could enhance process efficiency while maintaining high droplet fineness. This study investigates the physical processes involved in cavitation-based aerosol formation and describes the design of an acousto-hydraulic atomizer for implementing the proposed combined atomization method. Theoretical and experimental analyses identified the critical conditions for the transition to the optimal spray mode and key characteristics of atomization. It was found that the simultaneous application of ultrasound and hydraulic pressure enables the production of fine sprays (with a minimum droplet diameters up to 45 µm) at high flow rates (10 ml/s or more). The study demonstrates that the new acousto-hydraulic atomization method can generate a disinfectant aerosol cloud at high speeds. This work highlights the method’s significant potential for sanitary measures, conducted with safety requirements in mind, thereby contributing to the preservation and improvement of public health globally.
{"title":"High-Performance Acousto-Hydraulic method for generating fine aerosols for air and surface disinfection","authors":"Olga Kudryashova , Andrey Shalunov , Sergey Terentiev , Vladimir Khmelev","doi":"10.1016/j.ultsonch.2024.107149","DOIUrl":"10.1016/j.ultsonch.2024.107149","url":null,"abstract":"<div><div>Liquid atomization is utilized across various industrial applications, including nanopowder production, spray drying, fuel combustion, coating applications, emulsion preparation, and in medical devices. The use of ultrasonic energy for atomization offers advantages in terms of environmental sustainability compared to other methods. Notably, ultrasonic atomization can achieve finer dispersion with a narrow droplet size distribution at relatively low energy consumption, which is crucial for certain technological applications. One significant application of fine liquid atomization technology is in the disinfection of air and surfaces. The development of efficient and eco-friendly methods for air and surface disinfection has become particularly relevant in light of the spread of dangerous infections, such as the coronavirus. However, ultrasonic liquid atomization is characterized by low flow rate, limiting its applicability. The creation of a combined method that integrates the benefits of both ultrasonic and hydraulic atomization could enhance process efficiency while maintaining high droplet fineness. This study investigates the physical processes involved in cavitation-based aerosol formation and describes the design of an acousto-hydraulic atomizer for implementing the proposed combined atomization method. Theoretical and experimental analyses identified the critical conditions for the transition to the optimal spray mode and key characteristics of atomization. It was found that the simultaneous application of ultrasound and hydraulic pressure enables the production of fine sprays (with a minimum droplet diameters up to 45 µm) at high flow rates (10 ml/s or more). The study demonstrates that the new acousto-hydraulic atomization method can generate a disinfectant aerosol cloud at high speeds. This work highlights the method’s significant potential for sanitary measures, conducted with safety requirements in mind, thereby contributing to the preservation and improvement of public health globally.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"111 ","pages":"Article 107149"},"PeriodicalIF":8.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142611657","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}
Pub Date : 2024-11-07DOI: 10.1016/j.ultsonch.2024.107124
Mohammad Zohourmesgar , Reza Shoja Razavi , Mohammad Reza Dehnavi , Mohammad Reza Sheykholeslami , Mehrdad Khandaei
Laser direct deposition (LDD) is widely used to repair and manufacture high-value industrial components. However, it faces various defects, such as porosity, cracks, non-uniform microstructure, lack of fusion, keyhole phenomenon, element segregation, and undesirable secondary phases. A method to manage these defects is to concurrently apply ultrasonic vibrations (USV) during the LDD process. This study investigates the effect of USV on the mass efficiency and microstructure of LDD Inconel 718 superalloy to understand how incorporating USV can change the performance and structural integrity of single passes produced using the LDD process. For this purpose, USV is applied to a substrate during the LDD process. The resulting samples are characterized and analyzed using optical microscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The results indicate that applying USV below a threshold power value increases mass deposition by over 25%, while exceeding this threshold reduces it. Attention to this threshold power value is crucial for determining the process parameters, including laser power and speed. Additionally, USV transforms the microstructure from columnar to equiaxed and increases subgrain formation. This implementation also enhances the cooling rate, significantly decreasing the Laves phase by over 30% in all process parameters.
{"title":"Effect of ultrasonic vibrations on mass efficiency and microstructure of laser direct deposition Inconel 718 superalloy","authors":"Mohammad Zohourmesgar , Reza Shoja Razavi , Mohammad Reza Dehnavi , Mohammad Reza Sheykholeslami , Mehrdad Khandaei","doi":"10.1016/j.ultsonch.2024.107124","DOIUrl":"10.1016/j.ultsonch.2024.107124","url":null,"abstract":"<div><div>Laser direct deposition (LDD) is widely used to repair and manufacture high-value industrial components. However, it faces various defects, such as porosity, cracks, non-uniform microstructure, lack of fusion, keyhole phenomenon, element segregation, and undesirable secondary phases. A method to manage these defects is to concurrently apply ultrasonic vibrations (USV) during the LDD process. This study investigates the effect of USV on the mass efficiency and microstructure of LDD Inconel 718 superalloy to understand how incorporating USV can change the performance and structural integrity of single passes produced using the LDD process. For this purpose, USV is applied to a substrate during the LDD process. The resulting samples are characterized and analyzed using optical microscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The results indicate that applying USV below a threshold power value increases mass deposition by over 25%, while exceeding this threshold reduces it. Attention to this threshold power value is crucial for determining the process parameters, including laser power and speed. Additionally, USV transforms the microstructure from columnar to equiaxed and increases subgrain formation. This implementation also enhances the cooling rate, significantly decreasing the Laves phase by over 30% in all process parameters.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"111 ","pages":"Article 107124"},"PeriodicalIF":8.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142611649","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}
Pub Date : 2024-11-07DOI: 10.1016/j.ultsonch.2024.107146
Yuki Nakata , Yoshiteru Mizukoshi , Kenji Okitsu
The yields of H2O2 and H2 formed in the sonolysis of aqueous solution under noble gas are representative indexes for understanding the chemical effects of ultrasonic cavitation bubbles. In this study, the yields of H2O2 and H2 formed under Ar were evaluated as a function of the concentration of NaCl or KI. When these yields were analyzed by using a normalization technique, it was confirmed that the yields of H2 were more clearly related to Ar solubility than those of H2O2, suggesting that H2 is a more real probe to understand the chemical effects of cavitation bubbles in water. The effects of NaCl on sonochemical formation of oxidants were also compared with those of KI. When aqueous t-butanol solution was sonicated, the yields of H2 and the maximum temperature attained in a collapsing bubble (bubble temperature) decreased with increasing solution temperature and salt concentration, suggesting that these parameters affected the quantity related to the number (and/or size) of active bubbles as well as the quality related to the bubble temperatures.
在惰性气体下对水溶液进行超声溶解时形成的 H2O2 和 H2 的产率是了解超声空化气泡化学效应的代表性指标。本研究评估了在 Ar 下形成的 H2O2 和 H2 的产率与 NaCl 或 KI 浓度的函数关系。利用归一化技术对这些产率进行分析后证实，与 H2O2 的产率相比，H2 的产率与 Ar 溶解度的关系更为明显，这表明 H2 是了解水中空化气泡化学效应的更真实的探针。NaCl 与 KI 对氧化剂声化学形成的影响也进行了比较。在对正丁醇水溶液进行超声处理时，随着溶液温度和盐浓度的升高，H2 的产率和塌陷气泡达到的最高温度（气泡温度）均有所下降，这表明这些参数影响了与活性气泡数量（和/或大小）有关的量以及与气泡温度有关的质。
{"title":"Evaluation of H2O2, H2, and bubble temperature in the sonolysis of water and aqueous t-butanol solution under Ar: Effects of solution temperatures and inorganic additives of NaCl and KI","authors":"Yuki Nakata , Yoshiteru Mizukoshi , Kenji Okitsu","doi":"10.1016/j.ultsonch.2024.107146","DOIUrl":"10.1016/j.ultsonch.2024.107146","url":null,"abstract":"<div><div>The yields of H<sub>2</sub>O<sub>2</sub> and H<sub>2</sub> formed in the sonolysis of aqueous solution under noble gas are representative indexes for understanding the chemical effects of ultrasonic cavitation bubbles. In this study, the yields of H<sub>2</sub>O<sub>2</sub> and H<sub>2</sub> formed under Ar were evaluated as a function of the concentration of NaCl or KI. When these yields were analyzed by using a normalization technique, it was confirmed that the yields of H<sub>2</sub> were more clearly related to Ar solubility than those of H<sub>2</sub>O<sub>2,</sub> suggesting that H<sub>2</sub> is a more real probe to understand the chemical effects of cavitation bubbles in water. The effects of NaCl on sonochemical formation of oxidants were also compared with those of KI. When aqueous <em>t-</em>butanol solution was sonicated, the yields of H<sub>2</sub> and the maximum temperature attained in a collapsing bubble (bubble temperature) decreased with increasing solution temperature and salt concentration, suggesting that these parameters affected the quantity related to the number (and/or size) of active bubbles as well as the quality related to the bubble temperatures.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"111 ","pages":"Article 107146"},"PeriodicalIF":8.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643430","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}
Pub Date : 2024-11-07DOI: 10.1016/j.ultsonch.2024.107141
Stefan Kuvendziev, Isidora Dimitrievska, Martin Stojchevski, Mirko Marinkovski
Tribulus terrestris L. is a herb renowned for its abundance of saponins, flavonoids, and alkaloids, which are utilized in treating various health conditions. Protodioscin functions by enhancing the conversion of testosterone into potent dihydrotestosterone, stimulating an increase in libido, red blood cell production from the bone marrow, and muscle development. Contemporary ultrasound-assisted-extraction (UAE) process employing green extraction solvents was selected to design the required separation system. The experimental plan was developed based on the independent operating variables – extraction time, operating temperature and solvent system composition in order to determine the influence of defined parameters and their interactions on the extraction yield and the presence of protodioscin. The 3D-RSM approach was introduced to determine the optimal values of studied independent variables in the area of maximal extraction yield. UAE process performed at optimal operating conditions generated maximal extraction yield (31 %, w/w) and protodioscin content of 5.9 mg/g dry plant matrix. Experimental data was used to develop an ANN for the defined extraction system using the operating variables values as the input matrix and observed yield as target matrix. Successfully designed and trained ANN generated high correlation (r = 0.9992) between observed data and predictive model’ outputs, and MSE value of 0.29107.
{"title":"ANN modeling and RSM optimization of ultrasound-assisted extraction of protodioscin-rich extracts from Tribulus terrestris L.","authors":"Stefan Kuvendziev, Isidora Dimitrievska, Martin Stojchevski, Mirko Marinkovski","doi":"10.1016/j.ultsonch.2024.107141","DOIUrl":"10.1016/j.ultsonch.2024.107141","url":null,"abstract":"<div><div><em>Tribulus terrestris</em> L. is a herb renowned for its abundance of saponins, flavonoids, and alkaloids, which are utilized in treating various health conditions. Protodioscin functions by enhancing the conversion of testosterone into potent dihydrotestosterone, stimulating an increase in libido, red blood cell production from the bone marrow, and muscle development. Contemporary ultrasound-assisted-extraction (UAE) process employing green extraction solvents was selected to design the required separation system. The experimental plan was developed based on the independent operating variables – extraction time, operating temperature and solvent system composition in order to determine the influence of defined parameters and their interactions on the extraction yield and the presence of protodioscin. The 3D-RSM approach was introduced to determine the optimal values of studied independent variables in the area of maximal extraction yield. UAE process performed at optimal operating conditions generated maximal extraction yield (31 %, w/w) and protodioscin content of 5.9 mg/g dry plant matrix. Experimental data was used to develop an ANN for the defined extraction system using the operating variables values as the input matrix and observed yield as target matrix. Successfully designed and trained ANN generated high correlation (r = 0.9992) between observed data and predictive model’ outputs, and MSE value of 0.29107.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"111 ","pages":"Article 107141"},"PeriodicalIF":8.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142611619","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}
Pub Date : 2024-11-06DOI: 10.1016/j.ultsonch.2024.107144
Shuyang Wang , Song Miao , Mohammad Hassan Kamani , Eoin G. Murphy , Da-Wen Sun
Faba bean proteins are currently viewed as promising animal protein alternatives. However, certain functional properties e.g. relatively low solubility compared to whey protein isolates, can limit the application of faba bean protein isolates (FPIs) in certain food products. Therefore, it may be desirable to use modification approaches such as the application of ultrasound to alter such limiting physicochemical properties. In this study, Faba Bean Protein Isolates (FPIs) were treated by ultrasound with different frequencies (20 kHz, 40 kHz and 20 + 40 kHz) prior to hydration (1 %) at different pH levels (3, 7, and 9). Then the structure and physicochemical properties (i.e. particle size, ζ-potential, surface hydrophobicity, thermal behavior, and solubility) of control and untreated FPIs were investigated. Ultrasound treatment had no obvious effect on the molecular weight of FPIs, whereas it changed the secondary structure of FPIs from a more ordered structure to a more disordered structure. The applied treatment resulted in an increase in surface hydrophobicity across all treatment levels and pHs. It also decreased the particle size of FPI at pH 3, while it increased the particle size at pH 7 and 9, compared to the untreated FPI. In addition, the solubility and thermal properties of FPI were modified through the ultrasound treatment. The higher solubility of FPI could improve its potential to be used as a functional ingredient for many food applications. Ultrasound treatment at 20 kHz and 20 + 40 kHz had more effects on the physiochemical properties of FPI compared to that at 40 kHz. Overall, ultrasound treatment with different frequencies (20 kHz, 40 kHz, and 20 + 40 kHz) modified the structure and physiochemical properties of FPI to different degrees and may be beneficial for the development of FPI for certain food applications.
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