1
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Zushi R, Hayashi Y, Yamanaka T, Takizawa H. Facile room temperature synthesis of size-controlled spherical silica from silicon metal via simple sonochemical process. ULTRASONICS SONOCHEMISTRY 2024; 107:106913. [PMID: 38805886 PMCID: PMC11154706 DOI: 10.1016/j.ultsonch.2024.106913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 05/03/2024] [Accepted: 05/14/2024] [Indexed: 05/30/2024]
Abstract
The waterglass or St o¨ ber method is commonly used to synthesize spherical colloidal silica; however, these methods have some disadvantages, such as complicated processes for the removal of sodium ions and expensive and energy-consuming raw materials such as tetraethoxysilane (TEOS). In this study, size-controlled spherical colloidal silica was synthesized from silicon metal at room temperature using an ultrasound process with hydrazine monohydrate as the solvent. Silicon metal dissolves easily in hydrazine monohydrate under ultrasound irradiation, and spherical colloidal silica can be synthesized by adding alcohol to this precursor solution. By changing the concentration or type of alcohol, size-controlled colloidal silica 20-200 nm in size could be easily obtained. In addition, finer and more monodisperse particles were produced by low-frequency ultrasound irradiation, which had a higher stirring effect at the particle formation stage. The present method is effective because size-controlled colloidal silica can be synthesized at room temperature using only silicon metal, hydrazine, and alcohol as raw materials, without complicated processes or expensive and energy-consuming raw materials such as TEOS or tetramethoxysilane (TMOS).
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Affiliation(s)
- Ren Zushi
- Graduate School of Engineering, Department of Applied Chemistry, Tohoku University, 6-6 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yamato Hayashi
- Graduate School of Engineering, Department of Applied Chemistry, Tohoku University, 6-6 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan.
| | - Toshiki Yamanaka
- Graduate School of Engineering, Department of Applied Chemistry, Tohoku University, 6-6 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Hirotsugu Takizawa
- Graduate School of Engineering, Department of Applied Chemistry, Tohoku University, 6-6 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
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2
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Jacobson B, Li S, Marin Rivera R, Daly P, Elgar CE, Mulvihill DM, Abbott AP, Feeney A, Prentice P. A mechanistic study identifying improved technology critical metal delamination from printed circuit boards at lower power sonications in a deep eutectic solvent. ULTRASONICS SONOCHEMISTRY 2023; 101:106701. [PMID: 38029568 PMCID: PMC10711237 DOI: 10.1016/j.ultsonch.2023.106701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 11/06/2023] [Accepted: 11/17/2023] [Indexed: 12/01/2023]
Abstract
Deep eutectic solvents (DESs) are an emerging class of ionic liquids that offer a solution to reclaiming technology critical metals (TCMs) from electronic waste, with potential for improved life cycle analysis. The high viscosities typical of DESs, however, impose mass transport limitations such that passive TCM removal generally requires immersion over extended durations, in some cases in the order of hours. It is postulated that, through the targeted application of power ultrasound, delamination of key structures in electronic components immersed in DESs can be significantly accelerated, thereby enabling rapid recovery of TCMs. In this paper, we fully characterise cavitation in a Choline Chloride-Ethylene Glycol DES as a function of sonotrode input power, by the acoustic detection of the bubble collapse shockwave content generated during sonications at more than 20 input powers over the available range. This justifies the selection of two powers for a detailed study of ultrasonically enhanced TCM-delamination from printed circuit boards (PCBs). Dual-perspective high-speed imaging is employed, which facilitates simultaneous observation of TCM removal, and the cavitation evolution and interaction with the PCB surface. Bubble jetting is identified as a key contributor to initial pitting of the TCM layers, exposing the larger underlying copper layer, with the contributions of additional inertial cavitation-mediated phenomena such as bubble-collapse shockwaves also demonstrated as important for delamination. Optimal cavitation activity throughout the sonication then promotes etching of the copper base layer of the PCB structure targeted by the DES, liberating the overlaying TCMs in sections as large as 0.79 mm2. We report a thirtyfold improvement in processing time compared to passive delamination, with sonications at the lower power outperforming those at the higher power. The results demonstrate the potential for industrially scalable recovery of TCMs from the growing quantities of global e-waste, using combined power ultrasonics and DESs.
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Affiliation(s)
- Ben Jacobson
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK.
| | - Shida Li
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | | | - Paul Daly
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | | | - Daniel M Mulvihill
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Andrew P Abbott
- School of Chemistry, University of Leicester, Leicester LE1 7RH, UK
| | - Andrew Feeney
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Paul Prentice
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
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3
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Wu Y, Li W, Colombo E, Martin GJ, Ashokkumar M. Kinetic and mechanistic study of ultrasonic inactivation of Kunitz (KTI) and Bowman-Birk (BBI) inhibitors in relation to process-relevant parameters. Food Chem 2023; 401:134129. [DOI: 10.1016/j.foodchem.2022.134129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 08/20/2022] [Accepted: 09/03/2022] [Indexed: 11/28/2022]
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4
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Naik M, Natarajan V, Thangaraju S, Modupalli N, Rawson A. Assessment of storage stability and quality characteristics of thermo‐sonication assisted blended bitter gourd seed oil and sunflower oil. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mohan Naik
- Department of Food Engineering National Institute of Food Technology, Entrepreneurship and Management‐Thanjavur (an Institute of National Importance; formerly Indian Institute of Food Processing Technology ‐ IIFPT) Thanjavur India
- Department of Food Processing Technology School of Agriculture and Biosciences, Karunya Institute of Technology and Sciences (Deemed University) coimbatore India
| | - Venkatachalapathy Natarajan
- Department of Food Engineering National Institute of Food Technology, Entrepreneurship and Management‐Thanjavur (an Institute of National Importance; formerly Indian Institute of Food Processing Technology ‐ IIFPT) Thanjavur India
| | - Suka Thangaraju
- Department of Food Engineering National Institute of Food Technology, Entrepreneurship and Management‐Thanjavur (an Institute of National Importance; formerly Indian Institute of Food Processing Technology ‐ IIFPT) Thanjavur India
| | - Nikitha Modupalli
- Department of Food Engineering National Institute of Food Technology, Entrepreneurship and Management‐Thanjavur (an Institute of National Importance; formerly Indian Institute of Food Processing Technology ‐ IIFPT) Thanjavur India
| | - Ashish Rawson
- Department of Food Safety and Quality Testing National Institute of Food Technology, Entrepreneurship and Management‐Thanjavur (an Institute of National Importance; formerly Indian Institute of Food Processing Technology ‐ IIFPT) Thanjavur India
- Center of Excellence in Non‐Thermal Processing National Institute of Food Technology, Entrepreneurship and Management‐Thanjavur (an Institute of National Importance; formerly Indian Institute of Food Processing Technology ‐ IIFPT) Thanjavur India
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5
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Pandur Ž, Dular M, Kostanjšek R, Stopar D. Bacterial cell wall material properties determine E. coli resistance to sonolysis. ULTRASONICS SONOCHEMISTRY 2022; 83:105919. [PMID: 35077964 PMCID: PMC8789596 DOI: 10.1016/j.ultsonch.2022.105919] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/23/2021] [Accepted: 01/13/2022] [Indexed: 05/02/2023]
Abstract
The applications of bacterial sonolysis in industrial settings are plagued by the lack of the knowledge of the exact mechanism of action of sonication on bacterial cells, variable effectiveness of cavitation on bacteria, and inconsistent data of its efficiency. In this study we have systematically changed material properties of E. coli cells to probe the effect of different cell wall layers on bacterial resistance to ultrasonic irradiation (20 kHz, output power 6,73 W, horn type, 3 mm probe tip diameter, 1 ml sample volume). We have determined the rates of sonolysis decay for bacteria with compromised major capsular polymers, disrupted outer membrane, compromised peptidoglycan layer, spheroplasts, giant spheroplasts, and in bacteria with different cell physiology. The non-growing bacteria were 5-fold more resistant to sonolysis than growing bacteria. The most important bacterial cell wall structure that determined the outcome during sonication was peptidoglycan. If peptidoglycan was remodelled, weakened, or absent the cavitation was very efficient. Cells with removed peptidoglycan had sonolysis resistance equal to lipid vesicles and were extremely sensitive to sonolysis. The results suggest that bacterial physiological state as well as cell wall architecture are major determinants that influence the outcome of bacterial sonolysis.
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Affiliation(s)
- Žiga Pandur
- University of Ljubljana, Biotechnical Faculty, Večna pot 111, 1000 Ljubljana, SI-Slovenia; University of Ljubljana, Faculty of Mechanical Engineering, Aškerčeva 6, 1000 Ljubljana, SI-Slovenia
| | - Matevž Dular
- University of Ljubljana, Faculty of Mechanical Engineering, Aškerčeva 6, 1000 Ljubljana, SI-Slovenia
| | - Rok Kostanjšek
- University of Ljubljana, Biotechnical Faculty, Večna pot 111, 1000 Ljubljana, SI-Slovenia
| | - David Stopar
- University of Ljubljana, Biotechnical Faculty, Večna pot 111, 1000 Ljubljana, SI-Slovenia.
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6
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Wu Y, Li W, Martin GJO, Ashokkumar M. Mechanism of low-frequency and high-frequency ultrasound-induced inactivation of soy trypsin inhibitors. Food Chem 2021; 360:130057. [PMID: 34029924 DOI: 10.1016/j.foodchem.2021.130057] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/29/2021] [Accepted: 05/08/2021] [Indexed: 01/15/2023]
Abstract
In this study, the effect of ultrasonic frequency and power on the inactivation of soy trypsin inhibitors (TIs) was investigated to explore the ultrasound-induced inactivation mechanism. It was observed that 20 kHz and 355 kHz ultrasound have better inactivation efficiency than 1056 kHz. First-order rate constants for the inactivation process were obtained, which increased with increasing ultrasonic power at both 20 kHz and 355 kHz. For 20 kHz ultrasound, the formation of TI aggregates resulting from the physical effects of acoustic cavitation decreased the interactions between the active sites of TIs and trypsin, thus reducing the TI activity. For 355 kHz ultrasound, most of the methionine in the TIs was oxidised within 5 mins, resulting in a faster reduction of TI activity. Subsequent aggregation of TIs resulted in further TI inactivation. SDS-PAGE showed that neither disulphide bonds nor CC coupling were involved in the formation of aggregates.
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Affiliation(s)
- Yue Wu
- Sonochemistry Group, School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Wu Li
- Sonochemistry Group, School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Gregory J O Martin
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Muthupandian Ashokkumar
- Algal Processing Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia.
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7
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Nalesso S, Varlet G, Bussemaker MJ, Sear RP, Hodnett M, Monteagudo-Oliván R, Sebastián V, Coronas J, Lee J. Sonocrystallisation of ZIF-8 in water with high excess of ligand: Effects of frequency, power and sonication time. ULTRASONICS SONOCHEMISTRY 2021; 76:105616. [PMID: 34146976 PMCID: PMC8219993 DOI: 10.1016/j.ultsonch.2021.105616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/25/2021] [Accepted: 05/30/2021] [Indexed: 05/24/2023]
Abstract
A systematic study on the sonocrystallisation of ZIF-8 (zeolitic imidazolate framework-8) in a water-based system was investigated under different mixing speeds, ultrasound frequencies, calorimetric powers and sonication time. Regardless of the synthesis technique, pure crystals of ZIF-8 with high BET (Brunauer, Emmett and Teller) specific surface area (SSA) can be obtained in water after only 5 s. Furthermore, 5 s sonication produced even smaller crystals (~0.08 µm). The type of technique applied for producing the ZIF-8 crystals did not have any significant impact on crystallinity, purity and yield. Crystal morphology and size were affected by the use of ultrasound and mixing, obtaining nanoparticles with a more spherical shape than in silent condition (no ultrasound and mixing). However, no specific trends were observed with varying frequency, calorimetric power and mixing speed. Ultrasound and mixing may have an effect on the nucleation step, causing the fast production of nucleation centres. Furthermore, the BET SSA increased with increasing mixing speed. With ultrasound, the BET SSA is between the values obtained under silent condition and with mixing. A competition between micromixing and shockwaves has been proposed when sonication is used for ZIF-8 production. The former increases the BET SSA, while the latter could be responsible for porosity damage, causing a decrease of the surface area.
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Affiliation(s)
- Silvia Nalesso
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, United Kingdom.
| | - Gaelle Varlet
- Département Chimie IUT Besançon-Vesoul, Université de Franche-Comté, 30 Avenue de l'Observatoire, 25000 Besançon, France
| | - Madeleine J Bussemaker
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Richard P Sear
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Mark Hodnett
- National Physical Laboratory, Teddington, Middlesex TW11 0LW, United Kingdom
| | - Rebeca Monteagudo-Oliván
- Instituto de Nanociencia y Materiales de Aragón (INMA), Universidad de Zaragoza-CSIC, 50018 Zaragoza, Spain; Chemical and Environmental Engineering Department, Universidad de Zaragoza, 50018 Zaragoza, Spain
| | - Victor Sebastián
- Instituto de Nanociencia y Materiales de Aragón (INMA), Universidad de Zaragoza-CSIC, 50018 Zaragoza, Spain; Chemical and Environmental Engineering Department, Universidad de Zaragoza, 50018 Zaragoza, Spain; Networking Research Center on Bioengineering Biomaterials and Nanomedicine (CIBER- BBN), Madrid, Spain
| | - Joaquín Coronas
- Instituto de Nanociencia y Materiales de Aragón (INMA), Universidad de Zaragoza-CSIC, 50018 Zaragoza, Spain; Chemical and Environmental Engineering Department, Universidad de Zaragoza, 50018 Zaragoza, Spain.
| | - Judy Lee
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, United Kingdom.
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8
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Gupta I, Su X, Jonnalagadda US, Das D, Pramanik M, Kwan JJ. Investigating the Acoustic Response and Contrast Enhancement of Drug-Loadable PLGA Microparticles with Various Shapes and Morphologies. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:1844-1856. [PMID: 33810888 DOI: 10.1016/j.ultrasmedbio.2021.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 01/07/2021] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
Polymer nanoparticles and microparticles have been used primarily for drug delivery. There is now growing interest in further developing polymer-based solid cavitation agents to also enhance ultrasound imaging. We previously reported on a facile method to produce hollow poly(lactic-co-glycolic acid) (PLGA) microparticles with different diameters and degrees of porosity. Here, we investigate the cavitation response from these PLGA microparticles with both therapeutic and diagnostic ultrasound transducers. Interestingly, all formulations exhibited stable cavitation; larger porous and multicavity particles also provided inertial cavitation at elevated acoustic pressure amplitudes. These larger particles also achieved contrast enhancement comparable to that of commercially available ultrasound contrast agents, with a maximum recorded contrast-to-tissue ratio of 28 dB. Therefore, we found that multicavity PLGA microparticles respond to both therapeutic and diagnostic ultrasound and may be applied as a theranostic agent.
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Affiliation(s)
- Ipshita Gupta
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459
| | - Xiaoqian Su
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459
| | - Umesh Sai Jonnalagadda
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459
| | - Dhiman Das
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459
| | - Manojit Pramanik
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459
| | - James J Kwan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459.
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9
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Sharma D, Murthy ZVP, Patel SR. Recovery of lactose from aqueous solution by application of ultrasound through millichannel. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2021. [DOI: 10.1515/ijfe-2020-0228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Instead of direct disposal of whey, extraction of valuable products from it may reduce the environmental pollution. In the present study, the effect of ultrasound irradiation through millichannel on recovery of lactose was investigated. The ultrasonic baths of varying amplitude (20–40%) and frequency (25–35 kHz), two different configurations of millichannel i.e., coil and serpentine, were used to know their individual and combined effect on the lactose yield. Box-Behnken design was employed to examine the interactive effect of different operating conditions. The recovery of lactose was enhanced approximately by 5–53% and induction time was reduced by 1.79–1.85 times in comparison to the conventional process. The size of the lactose crystals was reduced from 139.5 to 42.486 μm at 40% amplitude and 49.879 μm at 35 kHz frequency. Optimized condition showed 63% yield of lactose at 3.6 supersaturation, 35 kHz frequency, and 45 min of sonication time.
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Affiliation(s)
- Daxa Sharma
- Department of Chemical Engineering , Sardar Vallabhbhai National Institute of Technology , Surat 395007 , Gujarat , India
| | | | - Sanjaykumar Rameshbhai Patel
- Department of Chemical Engineering , Sardar Vallabhbhai National Institute of Technology , Surat 395007 , Gujarat , India
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10
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Pal S, Nikam AV, Kulkarni AA. Antisolvent based ultrasound-assisted batch and continuous flow precipitation of metformin hydrochloride particles. J Flow Chem 2021. [DOI: 10.1007/s41981-020-00137-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Rivadeneyra-Romero G, Gutiérrez-Torres C, González-Neria I, Alonzo-García A, Yáñez-Varela JA, Mendoza-Escamilla V, Jimenez-Bernal JA, Martínez-Delgadillo SA. Evaluation of the Hydrodynamic Performance of High-Frequency Sonoreactors Using PIV. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gabriela Rivadeneyra-Romero
- Instituto Politécnico Nacional, SEPI-ESIME Zacatenco, U.P. Adolfo López Mateos, Edificio 5, 3er. Piso, Col. Lindavista, 07738 México, DF, Mexico
- Universidad del Istmo, Ciudad Universitaria S/N, Barrio Santa Cruz 4a Secc., Sto. Domingo Tehuantepec, 70760 Oaxaca, Mexico
| | - Claudia Gutiérrez-Torres
- Instituto Politécnico Nacional, SEPI-ESIME Zacatenco, U.P. Adolfo López Mateos, Edificio 5, 3er. Piso, Col. Lindavista, 07738 México, DF, Mexico
| | - Israel González-Neria
- Div. Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana Azcapotzalco, Av. San Pablo 180., Azcapotzalco, 02200 México, DF, Mexico
| | - Alejandro Alonzo-García
- CONACyT-Centro de Ingeniería y Desarrollo Industrial, Carretera Champotón-Cd. del Carmen 408, Ciudad del Carmen, Campeche 24150 Mexico
| | - Juan A. Yáñez-Varela
- Div. Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana Azcapotzalco, Av. San Pablo 180., Azcapotzalco, 02200 México, DF, Mexico
| | - Víctor Mendoza-Escamilla
- Div. Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana Azcapotzalco, Av. San Pablo 180., Azcapotzalco, 02200 México, DF, Mexico
| | - Jose A. Jimenez-Bernal
- Instituto Politécnico Nacional, SEPI-ESIME Zacatenco, U.P. Adolfo López Mateos, Edificio 5, 3er. Piso, Col. Lindavista, 07738 México, DF, Mexico
| | - Sergio A. Martínez-Delgadillo
- Div. Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana Azcapotzalco, Av. San Pablo 180., Azcapotzalco, 02200 México, DF, Mexico
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Jain M, Mudhoo A, Ramasamy DL, Najafi M, Usman M, Zhu R, Kumar G, Shobana S, Garg VK, Sillanpää M. Adsorption, degradation, and mineralization of emerging pollutants (pharmaceuticals and agrochemicals) by nanostructures: a comprehensive review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:34862-34905. [PMID: 32656757 DOI: 10.1007/s11356-020-09635-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 06/05/2020] [Indexed: 05/12/2023]
Abstract
This review discusses a fresh pool of research findings reported on the multiple roles played by metal-based, magnetic, graphene-type, chitosan-derived, and sonicated nanoparticles in the treatment of pharmaceutical- and agrochemical-contaminated waters. Some main points from this review are as follows: (i) there is an extensive number of nanoparticles with diverse physicochemical and morphological properties which have been synthesized and then assessed in their respective roles in the degradation and mineralization of many pharmaceuticals and agrochemicals, (ii) the exceptional removal efficiencies of graphene-based nanomaterials for different pharmaceuticals and agrochemicals molecules support arguably well a high potential of these nanomaterials for futuristic applications in remediating water pollution issues, (iii) the need for specific surface modifications and functionalization of parent nanostructures and the design of economically feasible production methods of such tunable nanomaterials tend to hinder their widespread applicability at this stage, (iv) supplementary research is also required to comprehensively elucidate the life cycle ecotoxicity characteristics and behaviors of each type of engineered nanostructures seeded for remediation of pharmaceuticals and agrochemicals in real contaminated media, and last but not the least, (v) real wastewaters are extremely complex in composition due to the mix of inorganic and organic species in different concentrations, and the presence of such mixed species have different radical scavenging effects on the sonocatalytic degradation and mineralization of pharmaceuticals and agrochemicals. Moreover, the formulation of viable full-scale implementation strategies and reactor configurations which can use multifunctional nanostructures for the effective remediation of pharmaceuticals and agrochemicals remains a major area of further research.
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Affiliation(s)
- Monika Jain
- Department of Natural Resource Management, College of Forestry, Banda University of Agriculture & Technology, Banda, Uttar Pradesh, 210001, India
| | - Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, 80837, Mauritius.
| | - Deepika Lakshmi Ramasamy
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Mahsa Najafi
- Department of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran
| | - Muhammad Usman
- PEIE Research Chair for the Development of Industrial Estates and Free Zones, Center for Environmental Studies and Research, Sultan Qaboos University, Al-Khoud, 123, Muscat, Oman
| | - Runliang Zhu
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (CAS), Guangzhou, 510640, China
| | - Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus, 4036, Stavanger, Norway
| | - Sutha Shobana
- Department of Chemistry & Research Centre, Mohamed Sathak Engineering College, Ramanathapuram, Tamil Nadu, India
| | - Vinod Kumar Garg
- Centre for Environmental Sciences and Technology, Central University of Punjab, Bathinda, 151001, India
| | - Mika Sillanpää
- Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam.
- Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam.
- School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, QLD, 4350, Australia.
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein, 2028, South Africa.
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Rybak K, Wiktor A, Witrowa-Rajchert D, Parniakov O, Nowacka M. The Effect of Traditional and Non-Thermal Treatments on the Bioactive Compounds and Sugars Content of Red Bell Pepper. Molecules 2020; 25:molecules25184287. [PMID: 32962060 PMCID: PMC7571178 DOI: 10.3390/molecules25184287] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/10/2020] [Accepted: 09/13/2020] [Indexed: 12/29/2022] Open
Abstract
The aim of the study was an investigation of the effect of traditional and non-thermal treatment on the bioactive compounds of red bell pepper. As a thermal process, blanching in water and in steam was studied, while for non-thermal the sonication, pulsed electric field treatment and their combination were used in this experiment. The red bell peppers were evaluated based on quality attributes such as: total carotenoids content; polyphenols; vitamin C; antioxidant activity and sugars content. Vitamin C and sugar content were analyzed using liquid chromatography and other measurements were determined based on the spectrophotometric method. Results showed that the blanching in water or in steam reduced bioactive compounds concentration; whereas non-thermal treatments as pulsed electric field (PEF) applied separately or in combination with ultrasound (US + PEF) let to obtain similar or slightly lower content of bioactive compounds in comparison to untreated peppers. When sonication (US) and combined treatment as PEF + US were applied; in most cases reduction of bioactive compounds concentration occurred. This effect was probably related to the effect of relatively long (30 min) ultrasound treatment. The application of appropriate parameters of non-thermal processing is crucial for the high quality of processed material.
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Affiliation(s)
- Katarzyna Rybak
- Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences–SGGW, 02-787 Warsaw, Poland; (K.R.); (A.W.); (D.W.-R.)
| | - Artur Wiktor
- Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences–SGGW, 02-787 Warsaw, Poland; (K.R.); (A.W.); (D.W.-R.)
| | - Dorota Witrowa-Rajchert
- Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences–SGGW, 02-787 Warsaw, Poland; (K.R.); (A.W.); (D.W.-R.)
| | - Oleksii Parniakov
- Elea Vertriebs- und Vermarktungsgesellschaft mbH, 49610 Quakenbrück, Germany;
| | - Małgorzata Nowacka
- Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences–SGGW, 02-787 Warsaw, Poland; (K.R.); (A.W.); (D.W.-R.)
- Correspondence: ; Tel.: +48-22-593-75-79
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15
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Evrard Q, Houard F, Daiguebonne C, Calvez G, Suffren Y, Guillou O, Mannini M, Bernot K. Sonocrystallization as an Efficient Way to Control the Size, Morphology, and Purity of Coordination Compound Microcrystallites: Application to a Single-Chain Magnet. Inorg Chem 2020; 59:9215-9226. [PMID: 32521161 DOI: 10.1021/acs.inorgchem.0c01126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The size, morphology, and purity control of coordination compound powders is a key stage for their conversion into materials and devices. In particular, surface science techniques require highly pure bulk materials with a narrow crystallite-size distribution together with straightforward, scalable, and reproducible crystallization procedures. In this work we demonstrate how sonocrystallization, i.e. the application of ultrasound during the crystallization process, can afford very quickly powders made of crystallites with controlled size, morphology, and purity. We show that this process drastically diminishes the crystallite-size distribution (low polydispersity indexes, PDI) and crystallite aspect ratio. By comparing sonicated samples with samples obtained by various silent crystallization conditions, we unambiguously show that the improvement in the crystallite morphology and size distribution is not due to any thermal effect but to the sonication of the crystallizing media. The application of sonocrystallization on crystallization batches of single-chain magnets (SCMs) maintains the chemical integrity of the SCMs together with their original magnetic behavior. Moreover, luminescent measurements show that sonocrystallization induces an efficient micromixing that drastically enhances the purity of the SCM powders. We thus propose that sonocrystallization, which is already used on organic or MOF compounds, can be applied to (magnetic) coordination compounds to readily afford bulk powders for characterization or shaping techniques that require pure, morphology- and crystallite-size-controlled powder samples.
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Affiliation(s)
- Quentin Evrard
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - Félix Houard
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - Carole Daiguebonne
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - Guillaume Calvez
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - Yan Suffren
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - Olivier Guillou
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - Matteo Mannini
- LAMM (Laboratory for Molecular Magnetism), Dipartimento di Chimica "Ugo Schiff" Università degli Studi di Firenze, INSTM, UdR Firenze Via della Lastruccia n. 3, Sesto Fiorentino (FI) 50019, Italy
| | - Kevin Bernot
- Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France.,Institut Universitaire de France (IUF), 1 rue Descartes, 75231 Paris, France
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16
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Banaga AB, Yue X, Chu G, Wu W, Luo Y, Chen J. Micromixing performance in a rotating bar reactor. CAN J CHEM ENG 2020. [DOI: 10.1002/cjce.23741] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Abdelgadir Bashir Banaga
- State Key Laboratory of Organic‐Inorganic CompositeBeijing University of Chemical Technology Beijing China
- Research Center of the Ministry of Education for High Gravity Engineering and TechnologyBeijing University of Chemical Technology Beijing China
| | - Xu‐Jia Yue
- State Key Laboratory of Organic‐Inorganic CompositeBeijing University of Chemical Technology Beijing China
- Research Center of the Ministry of Education for High Gravity Engineering and TechnologyBeijing University of Chemical Technology Beijing China
| | - Guang‐Wen Chu
- State Key Laboratory of Organic‐Inorganic CompositeBeijing University of Chemical Technology Beijing China
- Research Center of the Ministry of Education for High Gravity Engineering and TechnologyBeijing University of Chemical Technology Beijing China
| | - Wei Wu
- State Key Laboratory of Organic‐Inorganic CompositeBeijing University of Chemical Technology Beijing China
- Research Center of the Ministry of Education for High Gravity Engineering and TechnologyBeijing University of Chemical Technology Beijing China
| | - Yong Luo
- State Key Laboratory of Organic‐Inorganic CompositeBeijing University of Chemical Technology Beijing China
- Research Center of the Ministry of Education for High Gravity Engineering and TechnologyBeijing University of Chemical Technology Beijing China
| | - Jian‐Feng Chen
- State Key Laboratory of Organic‐Inorganic CompositeBeijing University of Chemical Technology Beijing China
- Research Center of the Ministry of Education for High Gravity Engineering and TechnologyBeijing University of Chemical Technology Beijing China
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17
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Thomas RG, Jonnalagadda US, Kwan JJ. Biomedical Applications for Gas-Stabilizing Solid Cavitation Agents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10106-10115. [PMID: 31045378 DOI: 10.1021/acs.langmuir.9b00795] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
For over a decade, advancements in ultrasound-enhanced drug delivery strategies have demonstrated remarkable success in providing targeted drug delivery for a broad range of diseases. In order to achieve enhanced drug delivery, these strategies harness the mechanical effects from bubble oscillations (i.e., cavitation) of a variety of exogenous cavitation agents. Recently, solid cavitation agents have emerged due to their capacity for drug-loading and sustained cavitation duration. Unlike other cavitation agents, solid cavitation agents stabilize gaseous bubbles on hydrophobic surface cavities. Thus, the design of these particles is crucial. In this Review, we provide an overview of the different designs for solid cavitation agents such as nanocups, nanocones, and porous structures, as well as the current status of their development. Considering the numerous advantages of solid cavitation agents, we anticipate further innovations for this new type of cavitation agent across a broad range of biomedical applications.
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Affiliation(s)
- Reju G Thomas
- School of Chemical and Biomedical Engineering , Nanyang Technological University , Singapore , 637459
| | - Umesh S Jonnalagadda
- School of Chemical and Biomedical Engineering , Nanyang Technological University , Singapore , 637459
| | - James J Kwan
- School of Chemical and Biomedical Engineering , Nanyang Technological University , Singapore , 637459
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18
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Mao H, Bu J, Qiu M, Ding D, Chen X, Verweij H, Fan Y. PZT/Ti composite piezoceramic membranes for liquid filtration: Fabrication and self-cleaning properties. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.03.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Nazari R, Rajić L, Xue Y, Zhou W, Alshawabkeh AN. Degradation of 4-Chlorophenol in Aqueous Solution by Sono-Electro-Fenton Process. INT J ELECTROCHEM SC 2018; 13:9214-9230. [PMID: 30568538 PMCID: PMC6296483 DOI: 10.20964/2018.09.46] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Electro-Fenton (EF) and ultrasound radiation (US) have been of interest for the removal of chlorinated compounds from water. This study evaluates the effects of different parameters on sono-electro-Fenton (SEF) for degradation of 4-chlorophenol (4-CP) in an aqueous solution. This study uses pulsing US waves along with Pd-catalyzed EF to degrade contaminants in water while maintaining temperature. The usage of pulsing US waves along with Pd catalyzed EF to remove contaminants while maintaining temperature has not been reported previously. SEF ability to degrade 4-CP was compared with the performance of each process (EF and sonolysis) alone. Initial pH, current density, background electrolyte, Fe2+ concentration, Pd/Al2O3 catalyst concentration, US waves, and sonifier amplitude were optimized in a two electrode (Ti/mixed metal oxide or Ti/MMO) batch system. The degradation of 4-CP increased from 1.85% by US to 83% by EF to nearly >99.9% by coupled SEF. With US radiation under 70% amplitude and 1:10 ON/OFF ratio, the removal rate of 4-CP increased to 98% compared to 62% under EF alone within the first 120 min in the presence of 80 mg L-1 Fe2+, 16.94 mA cm-2 of current density, 1 g L-1 Pd/Al2O3 catalyst (10 mg Pd), and initial pH of 3. However, the degradation rate decreased after 120 min of treatment, and complete 4-CP removal was observed after 300 minutes. The sonolysis impacted the 4-CP removal under coupled SEF, mostly due to the contribution of mass transfer (micromixing), while radical formation was found to be absent under the conditions tested (20kHz). The pulsed US was found to increase the temperature by only 8.7°C, which was found not to impact the 4-CP volatilization or degradation. These results imply that low-level US frequency through pulses is a practical and efficient approach to support electro-Fenton reaction, improving reaction rates without the need for electrolyte cooling.
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Affiliation(s)
- Roya Nazari
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Ljiljana Rajić
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Yunfei Xue
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA.,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Wei Zhou
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA.,Department of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P.R. China
| | - Akram N Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA
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20
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The Effects of Ultrasound on Crystals: Sonocrystallization and Sonofragmentation. CRYSTALS 2018. [DOI: 10.3390/cryst8070280] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Mao H, Qiu M, Bu J, Chen X, Verweij H, Fan Y. Self-Cleaning Piezoelectric Membrane for Oil-in-Water Separation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18093-18103. [PMID: 29732891 DOI: 10.1021/acsami.8b03951] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Ultrasound (US) treatment coupled with membrane filtration has been utilized for membrane fouling control in water treatment; however, large-scale implementation of ultrasonic cleaning equipment appeared to be cost-prohibitive. In this study, a porous lead zirconate titanate (PZT) membrane is presented that enables in situ ultrasound generation by the application of an alternating voltage (AV) to mitigate fouling during oil-in-water (O/W) emulsion separation. We expect that this method is much more cost-effective because it is more direct, avoiding buildup of fouling and the need to take the membrane offline. Because the PZT membrane is hydrophilic, its underwater surface is oleophobic so that the accumulated oil droplets will have little affinity and hence can be removed easily by in situ-generated US. The effect of the in situ US generation on membrane fouling was investigated through variation in the excitation AV and its frequency, O/W emulsion pH, emulsified oil concentration, crossflow velocity, and transmembrane pressure. The results indicated that the in situ US generation resulted in a substantial decrease of fouling during the filtration process of O/W emulsions, whereas the membrane flux was maintained closely at its initial value.
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Affiliation(s)
- Hengyang Mao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , No. 5 Xin Mofan Road , Nanjing 210009 , PR China
| | - Minghui Qiu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , No. 5 Xin Mofan Road , Nanjing 210009 , PR China
| | - Jiawei Bu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , No. 5 Xin Mofan Road , Nanjing 210009 , PR China
| | - Xianfu Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , No. 5 Xin Mofan Road , Nanjing 210009 , PR China
| | - Henk Verweij
- Department of Materials Science and Engineering, College of Engineering , Ohio State University , 2041 N College Road , Columbus , Ohio 43210 , United States
| | - Yiqun Fan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , No. 5 Xin Mofan Road , Nanjing 210009 , PR China
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22
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Fabrication and in-situ fouling mitigation of a supported carbon nanotube/γ-alumina ultrafiltration membrane. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.050] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Agglomeration Control during Ultrasonic Crystallization of an Active Pharmaceutical Ingredient. CRYSTALS 2017. [DOI: 10.3390/cryst7020040] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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24
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Jiang HL, Yang JL, Shi YP. Optimization of ultrasonic cell grinder extraction of anthocyanins from blueberry using response surface methodology. ULTRASONICS SONOCHEMISTRY 2017; 34:325-331. [PMID: 27773253 DOI: 10.1016/j.ultsonch.2016.06.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 06/01/2016] [Accepted: 06/01/2016] [Indexed: 06/06/2023]
Abstract
Ultrasonic cell grinder extraction (UCGE), using water as the solvent, was firstly applied to extract anthocyanins from blueberry. Extraction yield was related with four variables, including ratio of solution to solid, extraction power, buffer time, and extraction time. On the basis of response surface methodology (RSM), the optimal conditions were determined to be the ratio of solution to solid as 25:1(mL/g), the extraction power as 1500W, the buffer time as 3.0s, and the extraction time as 40min. The experimental yield of anthocyanins using UCGE was 2.89mg/g higher than that of conventional ultrasound-assisted extraction (CUAE). This study indicated that UCGE was an innovative, efficient, and environment friendly method in ultrasonic extraction fields, and had a potential to effectively extract other bioactive constituents.
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Affiliation(s)
- Hai-Long Jiang
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, PR China; University of Chinese Academy of Sciences, Beijing 100039, PR China
| | - Jun-Li Yang
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, PR China.
| | - Yan-Ping Shi
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, PR China.
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25
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Yao GL, Ma XH, Cao XY, Chen J. Effects of Power Ultrasound on Stability of Cyanidin-3-glucoside Obtained from Blueberry. Molecules 2016; 21:molecules21111564. [PMID: 27869751 PMCID: PMC6273004 DOI: 10.3390/molecules21111564] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 11/01/2016] [Accepted: 11/05/2016] [Indexed: 01/16/2023] Open
Abstract
Power ultrasound (US) could potentially be used in the food industry in the future. However, the extent of anthocyanin degradation by US requires investigation. Cyanidin-3-glucoside (Cy-3-glu) obtained from blueberry extracts was used as research material to investigate the effect of power ultrasound on food processing of anthocyanin-rich raw materials. The effects of ultrasonic waves on the stability of Cy-3-glu and on the corresponding changes in UV-Vis spectrum and antioxidant activity were investigated, and the mechanisms of anthocyanin degradation induced by ultrasonic waves were discussed. To explore Cy-3-glu degradation in different environments, we kept the Cy-3-glu solution treated with ultrasonic waves in four concentrations (0%, 10%, 20%, and 50%) of ethanol aqueous solutions to simulate water, beer, wine, and liquor storage environment according to the chemical kinetics method. Results show that the basic spectral characteristics of Cy-3-glu did not significantly change after power ultrasound cell crusher application at 30 °C. However, with anthocyanin degradation, the intensity of the peak for Cy-3-glu at 504 nm significantly decreased (p < 0.05). The degradation kinetics of Cy-3-glu by ultrasonic waves (200–500 W frequency) fitted well to first-order reaction kinetics, and the degradation rate constant of Cy-3-glu under power ultrasound was considerably larger than that under thermal degradation (p < 0.05). The sensitivity of the anthocyanins of blueberry to temperature increased with increasing ethanol concentration, and the longest half-life was observed in 20% ethanol aqueous solution.
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Affiliation(s)
- Guang-Long Yao
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
| | - Xing-Hui Ma
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
| | - Xian-Yin Cao
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
| | - Jian Chen
- College of Food Science and Technology, Hainan University, Haikou 570228, China.
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26
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Gielen B, Thimmesch Y, Jordens J, Janssen G, Thomassen L, Van Gerven T, Braeken L. Ultrasonic precipitation of manganese carbonate: Reactor design and scale-up. Chem Eng Res Des 2016. [DOI: 10.1016/j.cherd.2016.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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