Ultrasonics Sonochemistry最新文献_第4页

Preparation high quality camellia oil by combining ultrasound pre-treatment and microwave as drying method: Interactive effect on drying kinetics, metabolite profile and antioxidant ability 超声预处理与微波干燥相结合制备高品质山茶油：对干燥动力学、代谢物谱和抗氧化能力的交互影响

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-04-03 DOI: 10.1016/j.ultsonch.2025.107338

Qingyang Li , Maokai Cui , Jiarong She , Shiman Sun , Lingyuan Zhou , Fubin Tang , Yirong Guo , Yihua Liu

{"title":"Preparation high quality camellia oil by combining ultrasound pre-treatment and microwave as drying method: Interactive effect on drying kinetics, metabolite profile and antioxidant ability","authors":"Qingyang Li , Maokai Cui , Jiarong She , Shiman Sun , Lingyuan Zhou , Fubin Tang , Yirong Guo , Yihua Liu","doi":"10.1016/j.ultsonch.2025.107338","DOIUrl":"10.1016/j.ultsonch.2025.107338","url":null,"abstract":"<div><div>This study systematically investigates the effects of different drying methods—Hot Air Drying (HAD), Microwave Drying (MWD), and Ultrasound-Microwave Combined Drying (UMWD)—on the drying kinetics, total phenolic content (TPC), antioxidant activity, and metabolome of Camellia oils (COs). UMWD significantly reduced drying time and increased TPC by 102.20 % and 395.94 % compared to MWD and HAD, respectively. The antioxidant capacity, as measured by FRAP, DPPH, and ABTS assays, was enhanced to 8.51, 11.35, and 37.68 µg VC/mL under UMWD conditions, showing marked improvements over MWD and HAD. Metabolomic analysis identified 1,350 metabolites, with 447 differential metabolites specific to UMWD. A total of 47 antioxidant-related metabolites (ACCMs) were identified, most of which exhibited up to a 10-fold increase in UMWD/HAD comparisons. These findings demonstrate that UMWD effectively enhances both the bioactive components and antioxidant capacity of COs, making a significant contribution to the preparation of high-quality camellia oil. Additionally, the study offers new insights into how ultrasound-assisted drying methods can enhance the bioactive components of food products.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107338"},"PeriodicalIF":8.7,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815975","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}

引用次数: 0

Effect of low-intensity ultrasound on grain refinement and heterogeneous nucleation mechanism of 2219 Al alloy 低强度超声对2219铝合金晶粒细化及非均相形核机制的影响

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-04-02 DOI: 10.1016/j.ultsonch.2025.107341

Anqing Li , Ripeng Jiang , Ruiqing Li , Aolei Fu , Li Zhang , Lihua Zhang

{"title":"Effect of low-intensity ultrasound on grain refinement and heterogeneous nucleation mechanism of 2219 Al alloy","authors":"Anqing Li , Ripeng Jiang , Ruiqing Li , Aolei Fu , Li Zhang , Lihua Zhang","doi":"10.1016/j.ultsonch.2025.107341","DOIUrl":"10.1016/j.ultsonch.2025.107341","url":null,"abstract":"<div><div>The ultrasonic cavitation and acoustic streaming have long been regarded as the dominant mechanisms for refining the solidification microstructure of Aluminum (Al) alloys. This work investigated the effects of low-intensity ultrasound on the solidification microstructure of 2219 Al alloy by setting an ultrasonic application angle of 15° and with the different depths (30 mm, 70 mm, and 110 mm). The experimental results show that low-intensity ultrasound can also achieve a significant refining effect on the microstructure. Comparative analysis of solidified microstructures across multiple samples revealed, for the first time, that low-intensity ultrasound refines grain morphology primarily through enhanced heterogeneous nucleation. By establishing a theoretical model between acoustic intensity (<span><math><msub><mi>I</mi><mi>e</mi></msub></math></span>) and heterogeneous nucleation energy (<span><math><mrow><mi>Δ</mi><msup><mrow><mi>G</mi></mrow><mrow><mo>∗</mo></mrow></msup></mrow></math></span>), the required low-intensity acoustic pressure amplitude (<span><math><msubsup><mi>P</mi><mrow><mi>a</mi></mrow><mo>′</mo></msubsup></math></span>) for heterogeneous nucleation was determined. The calculation results are in good agreement with the experimental conclusions, thereby proposing a new mechanism for ultrasound to improve solidification microstructures. This work demonstrates that the ultrasonic cavitation and acoustic streaming are not necessary conditions for refining grain structures. Low-intensity ultrasound can also promote the refinement of Al alloy grain structures when satisfying the critical nucleation acoustic pressure conditions.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107341"},"PeriodicalIF":8.7,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768503","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

Degradation of lithium metal batteries due to dead lithium accumulation under ultrasound 锂金属电池在超声作用下因死锂堆积而退化

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-04-01 DOI: 10.1016/j.ultsonch.2025.107334

Byeonggi Kim, Jinwook Jung, Seunghun Baek, Byeongyong Lee

{"title":"Degradation of lithium metal batteries due to dead lithium accumulation under ultrasound","authors":"Byeonggi Kim, Jinwook Jung, Seunghun Baek, Byeongyong Lee","doi":"10.1016/j.ultsonch.2025.107334","DOIUrl":"10.1016/j.ultsonch.2025.107334","url":null,"abstract":"<div><div>Lithium metal batteries (LMBs) have emerged as promising alternatives to conventional lithium-ion batteries (LIBs) due to their superior capacity and energy density. However, practical applications are hindered by challenges such as dendritic lithium growth and the accumulation of dead lithium, which severely impact performance and safety. To address these issues, ultrasound has been proposed as a physical method to mitigate dendrite formation. In this study, we investigate the effects of real-time ultrasound application on LMBs and their subsequent electrochemical performance. Interestingly, our findings reveal that contrary to the intended effect, ultrasound accelerates the accumulation of dead lithium, worsening with continued cycling. Mechanical simulations indicate that the stress induced by ultrasound causes fragmentation and further dead lithium accumulation. This accumulation not only hinders reaction kinetics but also disrupts plating/stripping processes, leading to significant capacity retention issues. Consequently, ultrasound-treated cells exhibit higher over potential, lower coulombic efficiency, and faster capacity fade compared to untreated cells across half-cells, symmetric cells, and full cells. These results underscore that ultrasound negatively impacts the lifespan of LMBs, highlighting its critical adverse effects on the porous, dendritic structure of LMBs. Therefore, this provides a novel insight that these dynamics are crucial for optimizing the application of ultrasound in future LMBs technologies.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107334"},"PeriodicalIF":8.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768502","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

Anti-inflammatory and gut microbiota regulatory effects of ultrasonic degraded polysaccharides from Auricularia auricula-judae in DSS-induced colitis mice 超声降解黑木耳多糖对dss诱导结肠炎小鼠的抗炎和肠道菌群调节作用

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-04-01 DOI: 10.1016/j.ultsonch.2025.107339

Tahidul Islam , Baojun Xu , Zhaoxiang Bian

{"title":"Anti-inflammatory and gut microbiota regulatory effects of ultrasonic degraded polysaccharides from Auricularia auricula-judae in DSS-induced colitis mice","authors":"Tahidul Islam , Baojun Xu , Zhaoxiang Bian","doi":"10.1016/j.ultsonch.2025.107339","DOIUrl":"10.1016/j.ultsonch.2025.107339","url":null,"abstract":"<div><div><em>Auricularia auricula-judae</em> is a widely cultivated mushroom species known for its edible and medicinal properties. Polysaccharides have been the focus of research because of their potential bioactivities; nonetheless, the structural complexity and molecular weight have hindered a complete understanding of their bioactivities. In this study, AP-1 polysaccharide was isolated from <em>A. auricula-judae</em> and subjected to ultrasonic degradation at different time points to improve their anti-inflammatory effects. The results showed that when AP-1 was degraded for 9 min (AP-2) and 20 min (AP-3), the NO inhibition rate was significantly increased in LPS-stimulated RAW 264.7 cells. The structural and physiochemical properties of native and degraded polysaccharides were analyzed, and it was found that the degradation process significantly reduced molecular weight and altered the particle size, viscosity, crystallinity, and helical structure. Furthermore, native and degraded polysaccharides (AP-1, AP-2, and AP-3) anti-inflammatory effects were investigated in the DSS-induced colitis mouse model. Degraded polysaccharides resulted in significant improvements, including recovery from weight loss, reduced disease activity, shortened colon length, and decreased inflammation, while AP-3 showed the most promising effects. Gut microbiota 16S rRNA sequencing revealed that AP-3 potentially increases healthy gut microbiota and inhibits unhealthy gut microbiota. Overall, this study demonstrates that ultrasonic degradation could be a great technique to modify polysaccharides’ MW and physiochemical properties to improve anti-inflammatory and gut microbiota regulatory effects.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107339"},"PeriodicalIF":8.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143808652","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}

引用次数: 0

Coalescence of multiple pairs of levitated droplets using dual-side phased arrays 多对悬浮液滴的双侧相控阵聚结

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-03-31 DOI: 10.1016/j.ultsonch.2025.107327

Jianqing Li, Nicholas J. Goddard , Ruamsiri Songsaeng, Ruchi Gupta

{"title":"Coalescence of multiple pairs of levitated droplets using dual-side phased arrays","authors":"Jianqing Li, Nicholas J. Goddard , Ruamsiri Songsaeng, Ruchi Gupta","doi":"10.1016/j.ultsonch.2025.107327","DOIUrl":"10.1016/j.ultsonch.2025.107327","url":null,"abstract":"<div><div>Acoustic levitation in air and contactless coalescence of levitated droplets using acoustic forces are of great significance to chemical and biological reactions. The state-of-the-art is levitation and coalescence of 3 pairs of droplets achieved via dual-side phased arrays. However, there are no reports on the general design principles for manipulation and coalescence of > 3 pairs of droplets. Equally, there are no reports on sequential coalescence of more than two columns of droplets, which is essential for performing reactions requiring addition of more than two reagents. In this paper, we showed that wide traps are more suited than narrow traps for the coalescence of droplets. In wide traps, the acoustic energy was expanded along the direction of merging of droplets. Additionally, uniform traps created in this work by distributing energy between traps increased the number of droplets that can be levitated. We have reported a new algorithm named DS-PAT based on direct search method to overcome the limitations of existing algorithms. Using wide uniform traps and the DS-PAT algorithm, for the first time, a stable coalescence of up to 6 pairs of levitated droplets was achieved. To measure experimental acoustic fields during the merging process, a custom-built acoustic scanning setup was employed, which showed good consistency with simulations. Subsequently, DS-PAT was used to design the sequential coalescence of 4 columns of droplets with 2 droplets in each column. This was then applied to study the well-known oscillatory Belousov–Zhabotinsky (BZ) reaction. This work gives general principles of designing acoustic fields for stable coalescence of columns of droplets and introduces a global algorithm for dual-side phased arrays, paving the way for stable and efficient chemical and biological reactions in airborne droplets.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"116 ","pages":"Article 107327"},"PeriodicalIF":8.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759633","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

Effect of ultrasonic treatment on the physicochemical properties of buckwheat starch: Based on the ultrasonic power and moisture content 超声波处理对荞麦淀粉理化性质的影响：基于超声波功率和含水率

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-03-29 DOI: 10.1016/j.ultsonch.2025.107333

Yue Yan , Meihan Jia , Zuohang Zhou , Shensheng Xiao , Peili Lin , Yiying Wang , Yang Fu , Xuedong Wang

{"title":"Effect of ultrasonic treatment on the physicochemical properties of buckwheat starch: Based on the ultrasonic power and moisture content","authors":"Yue Yan , Meihan Jia , Zuohang Zhou , Shensheng Xiao , Peili Lin , Yiying Wang , Yang Fu , Xuedong Wang","doi":"10.1016/j.ultsonch.2025.107333","DOIUrl":"10.1016/j.ultsonch.2025.107333","url":null,"abstract":"<div><div>The physicochemical property of native buckwheat starch (BWS) limits the application, which attracts more attention in the food industry. The objective of this study was to investigate the effects of different ultrasonic powers combined with moisture contents on the structure and physicochemical properties of BWS. The results showed that ultrasonic treatment significantly reduced the gel hardness and loss modulus of BWS. The increase in water content during ultrasound effectively enhanced the swelling power of BWS and reduced the peak viscosity. Besides, with the increase of water content and ultrasonic power, the crystallinity of BWS decreased significantly, and the formation of ordered structures was suppressed. In addition, after ultrasonic treatment, the particle size of BWS was decreased, and the surface became rough and concave. In short, ultrasonic treatment effectively improves the processability of BWS and provides a new theoretical basis for physical treatment in the production of cereal starch.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"116 ","pages":"Article 107333"},"PeriodicalIF":8.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738395","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

The effect of ultrasonic-assisted enzymes extraction on antioxidant polysaccharide activity in dandelion 超声波辅助酶提取对蒲公英抗氧化多糖活性的影响

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-03-28 DOI: 10.1016/j.ultsonch.2025.107329

Shuang Ni , Haolan Zhao , Shaohua Yang , Kai Cui

{"title":"The effect of ultrasonic-assisted enzymes extraction on antioxidant polysaccharide activity in dandelion","authors":"Shuang Ni , Haolan Zhao , Shaohua Yang , Kai Cui","doi":"10.1016/j.ultsonch.2025.107329","DOIUrl":"10.1016/j.ultsonch.2025.107329","url":null,"abstract":"<div><div>In this study, ultrasonic-assisted enzymatic extraction (UAEE) method was used to obtain the small molecule dandelion polysaccharides. Based on single-factor experiments, the process of extraction the extraction conditions were further optimized by response surface method (RSM) combined with the Box-Behnken design (BBD). The results showed that in combination with enzymes, with a ratio of 1:32 (g/ml), an enzymolysis temperature 55 °C, an ultrasonic temperature 75℃ and the ultrasonic time 55 min. The maximum extraction yield of crude polysaccharides was 3.127 %.After purification by DEAE-cellulose chromatography and Sephadex G-75 gel filtration, a novel polysaccharide (DANP-Ⅱ) was extracted and the results of high performance liquid chromatography (HPLC) indicated its average molecular weight was 3.373 kDa. Gas chromatography (GC) analysis showed that DANP-Ⅱ was mainly contained by glucose and little of glucuronic acid, mannose, galactose, and arabinose. <em>In vitro</em> antioxidant experiments have demonstrated that DANP-Ⅱ can alleviate H2O2-induced cellular damage, reduce apoptosis rates, and exhibit robust antioxidant activity. Hence, DANP-Ⅱ can be utilized as a natural antioxidant to enhance protection against oxidative stress, providing theoretical guidance for the utilization of low-molecular-weight dandelion polysaccharides.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"116 ","pages":"Article 107329"},"PeriodicalIF":8.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724295","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

Corrigendum to “A clean and efficient route for extraction of vanadium from vanadium slag by electro-oxidation combined with ultrasound cavitation” [Ultrason. Sonochem. 102 (2024) 106735] 电氧化联合超声空化从钒渣中提取钒的一种清洁高效的工艺路线的更正[超声]。声学化学，102 (2024):106735 [j]。

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-03-28 DOI: 10.1016/j.ultsonch.2025.107320

Bao Liu, Luyang Duan, Shuang Cai, Qianqian Ren, Junguo Li, Yajun Wang, Yanan Zeng

引用次数: 0

Fast Delamination of Fuel Cell Catalyst-Coated Membranes Using High-Intensity Ultrasonication 高强度超声对燃料电池催化剂涂层膜的快速分层研究

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-03-26 DOI: 10.1016/j.ultsonch.2025.107330

Tanongsak Yingnakorn , Ross Gordon , Daniel Marin Florido , Christopher E. Elgar , Ben Jacobson , Shida Li , Paul Prentice , Andrew P. Abbott , Jake M. Yang

{"title":"Fast Delamination of Fuel Cell Catalyst-Coated Membranes Using High-Intensity Ultrasonication","authors":"Tanongsak Yingnakorn , Ross Gordon , Daniel Marin Florido , Christopher E. Elgar , Ben Jacobson , Shida Li , Paul Prentice , Andrew P. Abbott , Jake M. Yang","doi":"10.1016/j.ultsonch.2025.107330","DOIUrl":"10.1016/j.ultsonch.2025.107330","url":null,"abstract":"<div><div>This study demonstrates a rapid and facile method for separating the central membrane and catalyst-coated material from production scrap fuel cell catalyst-coated membranes (CCMs), facilitating a circular economy of technologically critical metals. A novel approach is presented using high-intensity ultrasonication with two distinct sonotrode configurations for rapid delamination at ambient temperature in water. This technique utilises cavitation, where high-frequency sound waves create, expand, and collapse microbubbles, generating high-speed jets, shockwaves, and acoustic streaming. This process effectively separates the membrane and catalyst while maintaining their overall integrity of the former. A cylindrical sonotrode (20 mm diameter) was used to optimise process parameters for smaller CCM samples to minimise time and energy consumption. To scale up the delamination process for industrial-size CCMs, a blade sonotrode (15 mm x 210 mm) was employed to enable a flow process for rapid and continuous delamination. Cavitation at the sonotrode-CCM interface was shown to facilitate the selective and rapid breakdown of the catalyst layers, enabling full delamination of the catalyst-loaded membrane within tens of seconds. This efficient and fast delamination approach offers a promising strategy for CCM recycling.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"116 ","pages":"Article 107330"},"PeriodicalIF":8.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734662","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

Effect of ultrasonic degradation on the physicochemical property, structure characterization, and bioactivity of Houttuynia cordata polysaccharide 超声降解对鱼腥草多糖理化性质、结构表征及生物活性的影响

IF 8.7 1区化学

Ultrasonics Sonochemistry Pub Date : 2025-03-26 DOI: 10.1016/j.ultsonch.2025.107331

Mohammed Mansour , Ramy M. Khoder , Lin Xiang , Lan Lan Zhang , Ahmed Taha , Alsadig Yahya , Ting Wu , Hassan Barakat , Ibrahim Khalifa , Xu Xiaoyun

{"title":"Effect of ultrasonic degradation on the physicochemical property, structure characterization, and bioactivity of Houttuynia cordata polysaccharide","authors":"Mohammed Mansour , Ramy M. Khoder , Lin Xiang , Lan Lan Zhang , Ahmed Taha , Alsadig Yahya , Ting Wu , Hassan Barakat , Ibrahim Khalifa , Xu Xiaoyun","doi":"10.1016/j.ultsonch.2025.107331","DOIUrl":"10.1016/j.ultsonch.2025.107331","url":null,"abstract":"<div><div>This study aimed to evaluate the influence of ultrasonic degradation on <em>Houttuynia cordata</em> polysaccharide (HCP) physicochemical properties, structure characterization, and bioactivities. The results indicated that the ultrasonic degradation could significantly decrease HCP’s molecular weight (MW). Total polysaccharide, uronic acid content, solubility, and thermal stability of HCP increased gradually with the increase in ultrasonication power. Fourier transform infrared (FTIR) and Nuclear magnetic resonance spectroscopy (NMR) spectra proved that the primary structure of HCP had not been changed via ultrasonic degradation. Antioxidant and hypoglycemic activity results confirmed that ultrasonication enhanced the ability to scavenge free radicals (DPPH, ABTS, and OH) and improved α-glycosidase and α-amylase inhibition with the increase of ultrasonic power, which was increased in order HCP <U200 < U400 < U600. The degraded HCP produced via 600 W presented the best physicochemical properties and bioactivities. U600, α-amylase and α-glycosidase inhibition activities were 43.80 ± 0.68 and 83.28 ± 2.56 %, which were higher than those of native HCP 38.40 ± 0.53 and 65.67 ± 0.54 %, respectively, at a concentration of 10 mg/mL HCP solution. These results suggested that ultrasonication could be used as a green method for polysaccharide degradation and showed potential application for enhancing polysaccharide bioactivities for functional foods and pharmaceutical applications.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"116 ","pages":"Article 107331"},"PeriodicalIF":8.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747550","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