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Vence J, Paz C, Suárez E, Cabarcos A, Conde-Fontenla M. Experimental evaluation of the effect of ozone treatment on the oxidation and removal of dry soot deposits of the exhaust gas recirculation system. Heliyon 2023; 9:e17861. [PMID: 37519737 PMCID: PMC10372213 DOI: 10.1016/j.heliyon.2023.e17861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/29/2023] [Accepted: 06/29/2023] [Indexed: 08/01/2023] Open
Abstract
The integration of alternative energy sources as a replacement for fossil fuels across various industrial sectors, including power generation, emergency systems, or marine applications, is uncertain. As a result, the utilization of traditional fuels is not anticipated to be fully phased out in the near future. To address this, new technologies, such as those that employ oxidising atmospheres, have been explored as a means to enhance the pollution control capabilities of existing technologies, as the Exhaust Gas Recirculation (EGR) system. In this regard, the present study has assessed the efficacy of ozone atmosphere exposure in mitigating the formation of undesired fouling deposits within the system, with the aim of facilitating more efficient operation of EGR devices and extending their service life. To this end, dry soot samples have been exposed to various ozone atmospheres at different temperatures and ozone concentrations through the utilization of an experimental test bench. The oxidation potential of these atmospheres has been evaluated through the analysis of the deposit mass loss. Likewise, confocal microscopy techniques have been employed to obtain the 3D topography of the fouling samples before and after the ozone treatment, allowing the assessment of the deposit thickness reduction, as well as the surface roughness variation. Additionally, thermogravimetric analysis has been conducted to examine the effects of the oxidation processes on fouling samples composition. The findings of this study have revealed that ozone atmospheres have been effective in reducing deposit mass at ozone treatment temperatures above 100 °C. The reduction in mass has reached 78.5% and 91.8% with treatment temperature of 140 °C with ozone concentrations of 30 gO3/m³ and 50 gO3/m³, respectively. It has also been established that treatment conditions with ozone concentrations of 30 gO3/m³ and 50 gO3/m³ are effective in reducing the thickness of deposits even at intermediate treatment temperatures, resulting in a thickness reduction of 78.6% and 81.1% at 80 °C, respectively. Additionally, it has been observed that the ozone exposure leads to the increase in the proportion of volatile material within the deposit.
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Affiliation(s)
- Jesús Vence
- CINTECX, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, 36310, Vigo, Spain
| | - Concepción Paz
- CINTECX, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, 36310, Vigo, Spain
| | - Eduardo Suárez
- CINTECX, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, 36310, Vigo, Spain
| | - Adrián Cabarcos
- CINTECX, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, 36310, Vigo, Spain
| | - Marcos Conde-Fontenla
- CINTECX, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, 36310, Vigo, Spain
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Li J, Du M, Din ZU, Xu P, Chen L, Chen X, Wang Y, Cao Y, Zhuang K, Cai J, Lyu Q, Chang X, Ding W. Multi-scale structure characterization of ozone oxidized waxy rice starch. Carbohydr Polym 2023; 307:120624. [PMID: 36781277 DOI: 10.1016/j.carbpol.2023.120624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/19/2023] [Accepted: 01/23/2023] [Indexed: 01/29/2023]
Abstract
The elucidation of multi-scale structural variation and oxidation reaction mechanism of ozone oxidized waxy rice starch molecules remains a big challenge, limiting its development of intensive processing. In the present work, the changes in the structure of waxy rice starch after ozone treatment were systematically researched by various characterization methods. The study has shown that with the increase in ozone oxidation time, the granules of oxidized starch were polygons with multiple face depressions. It was also observed that ozone first attacked the amorphous zone of the starch granules and then penetrated the crystalline zone. Combining 1D and 2D NMR (1H NMR, 13C NMR, HSQC and HMBC) and other methods, it was proved that ozone oxidation led to ring splitting between C2 and C3 of the glucose unit. The resulting hemiacetal groups showed different types of structures. Among them, the main structures were intramolecular acetals and intermolecular hemiacetals. This research offered theoretical guidance for the utilization of ozone oxidation technology for starch modification and the development of waxy rice new foods.
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Affiliation(s)
- Jing Li
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Meng Du
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Zia-Ud Din
- Department of Food Science and Nutrition, Women University Swabi, Khyber Pakhtunkhawa, Pakistan
| | - Ping Xu
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Lei Chen
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China.
| | - Xi Chen
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Yuehui Wang
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Yang Cao
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Kun Zhuang
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Jie Cai
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Qingyun Lyu
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Xianhui Chang
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Wenping Ding
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China; School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China.
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3
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Lee BJ, Ting ASY, Thoo YY. Impact of ozone treatment on the physico-chemical properties, bioactive compounds, pectin methylesterase activity and microbiological properties of watermelon juice. J Food Sci Technol 2022; 59:979-989. [PMID: 35185203 PMCID: PMC8814259 DOI: 10.1007/s13197-021-05102-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 04/05/2021] [Accepted: 04/09/2021] [Indexed: 10/21/2022]
Abstract
The increasing consumer demand for higher quality fruit juices has encouraged the use of non-thermal processing to extend the shelf life of perishable juice, watermelon juice. Ozone with its high oxidizing effect serve as an effective non-thermal processing treatment. The aim of this study was to investigate the impact of ozone treatment on the physico-chemical, bioactive compounds, pectin methylesterase (PME) activity and microbiological properties of unclarified and clarified watermelon juice. The ozone gas was pumped into watermelon juice for up to 25 min in a closed chamber. The microorganism inactivation in unclarified and clarified watermelon juices improved across the increasing processing time. Among these juices, the microorganism inactivation efficiency of ozone was found higher on clarified juice (3.466 log) than unclarified juice (3.150 log). It was found that °Brix value and PME activity were not altered by ozone treatment. The other physico-chemical properties (titratable acidity, pH, total colour difference, non-enzymatic browning, cloudiness) and bioactive compounds reduced across processing time. This study demonstrated that ozone treatment is an effective non-thermal processing technique to reduce the microorganism in watermelon juice. Further study is required to optimise the processing parameters of ozone treatment to maintain the overall quality of the watermelon juice.
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Affiliation(s)
- Boon Jen Lee
- grid.440425.30000 0004 1798 0746Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor Malaysia
| | - Adeline Su Yien Ting
- grid.440425.30000 0004 1798 0746Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor Malaysia
| | - Yin Yin Thoo
- grid.440425.30000 0004 1798 0746Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor Malaysia
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Xu R, Ren H, Chi T, Zheng Y, Xie Y, Tian J, Chen L. Ozone oxidation of 2,4,6-TCP in the presence of halide ions: Kinetics, degradation pathways and toxicity evaluation. Chemosphere 2022; 288:132343. [PMID: 34597631 DOI: 10.1016/j.chemosphere.2021.132343] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/10/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
2,4,6-Trichlorophenol (2,4,6-TCP) is extensively consumed in industrial production and may cause environmental damages. The effect of halide ions on the decomposition of 2,4,6-TCP has often been overlooked. In this study, the bromide ion was found to have a stronger negative impact on 2,4,6-TCP degradation than chloride ion in the O3 system, and led to the formation of adsorbable organic halogens (AOX). Kinetic modeling demonstrated that the concentration of various radicals was largely depended on the solution pH, and stronger basicity not only contributed to the mineralization of 2,4,6-TCP, but also inhibited the formation of halogenated by-products. Combining the intermediate identification and quantum chemical calculation, the degradation pathways of 2,4,6-TCP during ozone oxidation process were proposed. The toxicity test and ECOSAR simulation demonstrated that the acute toxicity of some 2,4,6-TCP degradation intermediates was relatively higher than their parent compound. With high concentrations of halide ions, the ozone-treated solution showed greater toxicity than the originator 2,4,6-TCP solution. These results illustrate that the ozone treatment of the halide-containing wastewater may cause potential ecological hazards and its application needs to be more cautious.
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Affiliation(s)
- Ranyun Xu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Hang Ren
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Tongtong Chi
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yuhan Zheng
- College of Environmental Sciences and Engineering, Peking University, Beijing, 100084, China
| | - Yawei Xie
- College of Civil Engineering, Zhejiang University of Technology, Hangzhou, 310023, China
| | - Jinping Tian
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Lyujun Chen
- School of Environment, Tsinghua University, Beijing, 100084, China.
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Risch E, Jaumaux L, Maeseele C, Choubert JM. Comparative Life Cycle Assessment of two advanced treatment steps for wastewater micropollutants: How to determine whole-system environmental benefits? Sci Total Environ 2022; 805:150300. [PMID: 34537695 DOI: 10.1016/j.scitotenv.2021.150300] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 08/31/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Advanced wastewater treatment (AWT) technologies are now considered to target urban micropollutants (MPs) before discharge into receiving water bodies and to comply with specific criteria for reuse. Extra energy and/or resources are necessary to achieve the elimination of MPs. Using the Life Cycle Assessment framework, this study assesses net environmental efficiencies for two AWTs (i) ozone systems (air-fed and pure oxygen-fed) and (ii) granular activated carbon filter. Sixty-five MPs with proven removal efficiency values and toxicity and/or ecotoxicity potentials were included in this study building on results from recent research. Consolidated Life Cycle Inventories with data quality and uncertainty characterization were produced with an emphasis on operational inputs. Results show that the direct water quality benefits obtained from AWT are outweighed by greater increases in indirect impacts from energy and resource demands. Future research should include water quality aspects not currently captured in life cycle impact assessment, such as endocrine disruption and whole-effluent toxicity, in order to assess the complete policy implications of MP removal strategies.
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Affiliation(s)
- Eva Risch
- ITAP, Univ Montpellier, INRAE, Institut Agro, Montpellier, France; ELSA, Research group for environmental life cycle and sustainability assessment, Montpellier, France.
| | - Louis Jaumaux
- ITAP, Univ Montpellier, INRAE, Institut Agro, Montpellier, France; ELSA, Research group for environmental life cycle and sustainability assessment, Montpellier, France
| | - Camille Maeseele
- ITAP, Univ Montpellier, INRAE, Institut Agro, Montpellier, France; ELSA, Research group for environmental life cycle and sustainability assessment, Montpellier, France
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Sridhar A, Ponnuchamy M, Kumar PS, Kapoor A. Food preservation techniques and nanotechnology for increased shelf life of fruits, vegetables, beverages and spices: a review. Environ Chem Lett 2020; 19:1715-1735. [PMID: 33192209 PMCID: PMC7651826 DOI: 10.1007/s10311-020-01126-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/17/2020] [Indexed: 05/02/2023]
Abstract
Food wastage is a major issue impacting public health, the environment and the economy in the context of rising population and decreasing natural resources. Wastage occurs at all stages from harvesting to the consumer, calling for advanced techniques of food preservation. Wastage is mainly due to presence of moisture and microbial organisms present in food. Microbes can be killed or deactivated, and cross-contamination by microbes such as the coronavirus disease 2019 (COVID-19) should be avoided. Moisture removal may not be feasible in all cases. Preservation methods include thermal, electrical, chemical and radiation techniques. Here, we review the advanced food preservation techniques, with focus on fruits, vegetables, beverages and spices. We emphasize electrothermal, freezing and pulse electric field methods because they allow both pathogen reduction and improvement of nutritional and physicochemical properties. Ultrasound technology and ozone treatment are suitable to preserve heat sensitive foods. Finally, nanotechnology in food preservation is discussed.
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Affiliation(s)
- Adithya Sridhar
- Department of Chemical Engineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203 Kanchipuram, Chennai, India
| | - Muthamilselvi Ponnuchamy
- Department of Chemical Engineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203 Kanchipuram, Chennai, India
| | - Ponnusamy Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110 India
| | - Ashish Kapoor
- Department of Chemical Engineering, College of Engineering and Technology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203 Kanchipuram, Chennai, India
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Liu C, Zhang Y, Li H, Li L, Zheng X. Effect of ozone treatment on processing properties of wheat bran and shelf life characteristics of noodles fortified with wheat bran. J Food Sci Technol 2020; 57:3893-3902. [PMID: 32904003 PMCID: PMC7447729 DOI: 10.1007/s13197-020-04421-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/21/2019] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
The effects of ozone treatment on microorganism and volatile substances of wheat bran, as well as on the quality of fresh noodles made from wheat flour supplemented with ozone treated wheat bran were studied in this paper. Results showed that the optimized condition of ozone treatment was 50 min treatment time and optimized condition of bran properties were 15% moisture content, 15 mesh particle size. Under the optimized condition microbial contents in the wheat bran can be reduced more than 90% after ozone treatment. There was no significant increase in microbial contents of treated wheat bran during storage, whereas the types of volatile substances were gradually decreased. After the ozone treated wheat bran was added back to wheat flour and used for fresh noodles preparation, there were relatively few changes in the quality of the fresh noodles but the shelf life was prolonged as compared to the untreated bran.
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Affiliation(s)
- Chong Liu
- College of Grain, Oil and Food Science, Henan University of Technology, Zhengzhou, Henan 450001 People’s Republic of China
| | - Yanyan Zhang
- College of Grain, Oil and Food Science, Henan University of Technology, Zhengzhou, Henan 450001 People’s Republic of China
| | - Huan Li
- College of Grain, Oil and Food Science, Henan University of Technology, Zhengzhou, Henan 450001 People’s Republic of China
| | - Limin Li
- College of Grain, Oil and Food Science, Henan University of Technology, Zhengzhou, Henan 450001 People’s Republic of China
| | - Xueling Zheng
- College of Grain, Oil and Food Science, Henan University of Technology, Zhengzhou, Henan 450001 People’s Republic of China
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Feng X, Meng D, Yang Y, Tan Z, Liang J, Xiao C. Au/SBA-15 catalyst prepared by ozone treatment and importance of negatively charged gold in CO oxidation by DRIFTS. Chemosphere 2020; 250:126274. [PMID: 32113090 DOI: 10.1016/j.chemosphere.2020.126274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 02/04/2020] [Accepted: 02/18/2020] [Indexed: 06/10/2023]
Abstract
There is a lack of consensus on the charge state of active gold species in catalytic CO oxidation reaction. Herein, Au/SBA-15 catalyst was prepared by room temperature ozone treatment. Through diffuse reflectance Fourier-transform infrared spectroscopy (DRIFTS), two different gold species, Au0 and Auδ- with CO adsorption at about 2112 cm-1 and 2077 cm-1, were observed on Au/SBA-15. In CO oxidation mixture, the 2077 cm-1 band is completely attenuated while the 2112 cm-1 band retains some intensity. CO-Auδ- bonding is weaker than that of CO-Au0, but CO-Auδ- exhibits higher reactivity towards oxygen. Ozone treatment produces AuOx nanoparticles that is not stable and decomposes to metallic Au gradually. To our best knowledge, this is the first time to identify the presence and importance of Auδ- species for "inert" SiO2 supported gold catalyst.
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Affiliation(s)
- Xiaoqing Feng
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, PR China; School of Environmental and Safety Engineering, North University of China, Taiyuan, 030051, PR China
| | - Dan Meng
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, PR China
| | - Yong Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, PR China
| | - Zhaoyi Tan
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, PR China
| | - Jinhu Liang
- School of Environmental and Safety Engineering, North University of China, Taiyuan, 030051, PR China.
| | - Chao Xiao
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, PR China.
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Covarrubias-García I, de Jonge N, Arriaga S, Nielsen JL. Effects of ozone treatment on performance and microbial community composition in biofiltration systems treating ethyl acetate vapours. Chemosphere 2019; 233:67-75. [PMID: 31170585 DOI: 10.1016/j.chemosphere.2019.05.232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 05/18/2019] [Accepted: 05/27/2019] [Indexed: 06/09/2023]
Abstract
Ozone (O3) treatment is an effective strategy in maintaining high efficiency and control of biomass accumulation in gas phase biofiltration. However, little is known about the long-term impact of O3 on the microbial communities. In the present study, two biofilters treating gaseous ethyl acetate were operated continuously for 230 days with inlet loads up to 180 g m-3∙h-1. A biofilter operated under continuous O3 addition (90 ppbv) yielded consistently higher removal efficiency (RE) and elimination capacity (EC) compared to the control system. After 120 days of operation, a lower biomass content accompanied by a pH of 1.5 was observed in the ozonated biofilter, which was 2 units lower compared to the control reactor. Both reactors developed a distinct microbial community composition over the course of 230 days. The bacterial community was dominated in both biofilters by Beijerinckia and Gluconacetobacter, while Rhinocladiella similis, Trichosporon veenhuissi and Exophilia oligosperma were abundant in the fungal community. These findings suggest that ozonation of the biofiltration systems not only reduced clogging, but also contributed to the selection of biomass suitable for degradation of ethyl acetate.
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Affiliation(s)
- Itzel Covarrubias-García
- Instituto Potosino de Investigación Científica y Tecnológica, Department of Environmental Sciences, Camino a la Presa San José 2055, Lomas 4a Sección, CP 78216, San Luis Potosí, Mexico; Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers vej 7H, DK-9220, Aalborg East, Denmark.
| | - Nadieh de Jonge
- Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers vej 7H, DK-9220, Aalborg East, Denmark.
| | - Sonia Arriaga
- Instituto Potosino de Investigación Científica y Tecnológica, Department of Environmental Sciences, Camino a la Presa San José 2055, Lomas 4a Sección, CP 78216, San Luis Potosí, Mexico.
| | - Jeppe Lund Nielsen
- Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers vej 7H, DK-9220, Aalborg East, Denmark.
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Aydogdu I, Ilbey YO, Coban G, Ekin RG, Mirapoglu SL, Cay A, Kiziltan HS, Ekin ZY, Silay MS, Semerci MB. Does ozone administration have a protective or therapeutic effect against radiotherapy-induced testicular injury? J Cancer Res Ther 2019; 15:S76-S81. [PMID: 30900625 DOI: 10.4103/jcrt.jcrt_322_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objective We investigate the protective and therapeutic effects of ozone therapy (OT) in radiotherapy (RT)-induced testicular damage. Methods Thirty healthy adult male Wistar rats divided into five groups consisting of six animals each as follows: (1) Control (C), (2) RT, (3) OT, (4) OT + RT, and (5) RT + OT group. Histopathological findings, Johnsen scores, thiobarbituric acid-reactive substances (TBARS), glutathione (GSH), superoxide dismutase (SOD), catalase, and glutathione peroxidase (GPx) levels were evaluated. Results RT caused a significant decrease in testicular weight and Johnsen score compared to the control group. In addition, TBARS level was significantly higher, whereas GSH, SOD, catalase, and GPx levels were significantly lower in the RT group when compared to the control group. Pre and postRT OT significantly increased GSH, SOD, catalase, and GPx levels and decreased TBARS level. Furthermore, testicular weight and Johnsen score were increased with OT. Conclusions The present study showed that OT is protective and therapeutic in radiation-induced testicular damage. OT may be beneficial to the patients who underwent RT.
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Affiliation(s)
- Ibrahim Aydogdu
- Department of Pediatric Surgery, Bezmialem Vakif University, Istanbul, Turkey
| | - Yusuf Ozlem Ilbey
- Department of Urology, Tepecik Teaching and Research Hospital, Izmir, Turkey
| | - Ganime Coban
- Department of Pathology, Bezmialem Vakif University, Istanbul, Turkey
| | - Rahmi Gokhan Ekin
- Department of Pediatric Surgery, Bezmialem Vakif University, Istanbul, Turkey
| | | | - Ali Cay
- Department of Pediatric Surgery, Bezmialem Vakif University, Istanbul, Turkey
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Lyons DD, Philibert DA, Zablocki T, Qin R, Huang R, Gamal El-Din M, Tierney KB. Assessment of raw and ozonated oil sands process-affected water exposure in developing zebrafish: Associating morphological changes with gene expression. Environ Pollut 2018; 241:959-968. [PMID: 30029330 DOI: 10.1016/j.envpol.2018.02.092] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/17/2018] [Accepted: 02/04/2018] [Indexed: 06/08/2023]
Abstract
With the ever-increasing amounts of oil sands process-affected water (OSPW) accumulating from Canada's oil sands operations, its eventual release must be considered. As OSPW has been found to be both acutely and chronically toxic to aquatic organisms, remediation processes must be developed to lower its toxicity. Ozone treatment is currently being studied as a tool to facilitate the removal of organic constituents associated with toxicity. Biomarkers (e.g. gene expression) are commonly used when studying the effects of environmental contaminants, however, they are not always indicative of adverse effects at the whole organism level. In this study, we assessed the effects of OSPW exposure on developing zebrafish by linking gene expression to relevant cellular and whole organism level endpoints. We also investigated whether or not ozone treatment decreased biomarkers and any associated toxicity observed from OSPW exposure. The concentrations of classical naphthenic acids in the raw and ozonated OSPW used in this study were 16.9 mg/L and 0.6 mg/L, respectively. Ozone treatment reduced the total amount of naphthenic acids (NAs) in the OSPW sample by 92%. We found that exposure to both raw and ozonated OSPW had no effect on the survival of zebrafish embryos. The expression levels of biotransformation genes CYP1A and CYP1B were induced by raw OSPW exposure, with CYP1B being more highly expressed than CYP1A. In contrast, ozonated OSPW exposure did not increase the expression of CYP1A and only slightly induced CYP1B. A decrease in cardiac development and function genes (NKX2.5 and APT2a2a) was not associates with large changes in heart rate, arrhythmia or heart size. We did not find any indications of craniofacial abnormalities or of increased occurrence of apoptotic cells. Overall, our study found that OSPW was not overtly toxic to zebrafish embryos.
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Affiliation(s)
- Danielle D Lyons
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada.
| | - Danielle A Philibert
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
| | - Taylor Zablocki
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
| | - Rui Qin
- Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
| | - Rongfu Huang
- Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
| | - Mohamed Gamal El-Din
- Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
| | - Keith B Tierney
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada; School of Public Health, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada
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12
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Gertzou IN, Drosos PE, Karabagias IK, Riganakos KA. Combined effect of ozonation and packaging on shelf life extension of fresh chicken legs during storage under refrigeration. J Food Sci Technol 2016; 53:4270-7. [PMID: 28115767 DOI: 10.1007/s13197-016-2421-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/21/2016] [Accepted: 11/24/2016] [Indexed: 10/20/2022]
Abstract
The aim of the present study was to investigate the effect of different ozone doses (2, 5, and 10 mg/L) on shelf life extension of fresh chicken legs, packaged in polyamide/poleyethylene bags and stored at 4 ± 1 °C, for a period of 12 days. Parameters taken into account were: microbiological (Total viable count, Pseudomonas spp., Lactic acid bacteria, Yeasts and molds, and Enterobacteriaceae), physicochemical (pH, colour) and sensory (odor, appearance, texture, and taste) attributes. Results showed that colour parameter values (L*, a*, and b*) were not affected by the gaseous ozone dose, whereas only L* and b* were reduced during storage in all samples. pH was reduced by storage time but was not affected by ozonation dose and packaging. Total viable count and Pseudomonas spp., increased statistically significant with ozonation dose and storage time, but were not affected by packaging. Yeasts, molds, Enterobacteriaceae, and Lactic acid bacteria, were decreased during storage, packaging and ozonation dose. Finally, sensory examination (appearance, texture, odor and taste) showed that samples treated with ozone concentration of 10 mg/L retained the original characteristic features of fresh chicken legs as compared to the control samples. The gaseous ozone treatment of 10 mg/L for 1 h, to chicken legs packaged in plastic containers of polyamide/polyethylene under refrigeration, is appropriate for maintaining freshness and quality of chicken, since their shelf life was extended by 4 days, as compared to the control samples.
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13
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Łabanowska M, Kurdziel M, Filek M. Changes of paramagnetic species in cereal grains upon short-term ozone action as a marker of oxidative stress tolerance. J Plant Physiol 2016; 190:54-66. [PMID: 26655395 DOI: 10.1016/j.jplph.2015.10.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 06/05/2023]
Abstract
The increase of the concentration of ozone in the atmosphere, being the direct source of reactive oxygen species, results in the yield loss of agronomic crops. On the other hand, ozone is also used as a protector against microorganisms, living in plants and present in materials obtained from them, dangerous for human and animal health. In this work it has been studied if ozone in doses similar to those used for removal of microorganisms can have significant influence on the generation of stable organic radicals and changes in the character of transition metal ions and in the antioxidative biochemical parameters of cereal grains. The aim of this work was to find if the response of grains of three cereals (wheat, oat and barley) to ozone depended on their oxidative stress tolerance. The influence of direct short-term ozone application on grains of these cereals, each represented by two genotypes with different oxidative stress tolerance, was studied by biochemical analyses and by electron paramagnetic resonance (EPR) technique. Whole grains as well as their parts: embryo, endosperm and seed coat were subjected to ozone treatment for 30 min. Biochemical investigation of control samples showed that their antioxidant activity increased in order: wheat<oat<barley. EPR method revealed that character and the number of paramagnetic species (transition metal ions: Fe(III), Cu(II), Mn(II) and stable organic radicals) changed upon ozone exposure, depending on the kind of cereal, stress tolerance of particular genotype and the part of grain. The control samples of whole grains and their parts originating from sensitive genotypes contained higher amounts of stable organic radicals (semiquinone, phenoxyl and carbohydrate types) than those from tolerant ones. In embryos of grains from sensitive genotypes their amount increased upon ozone treatment stronger than in embryos from grains of tolerant cultivars. In seed coats and endosperms such relation was not found and the changes in the content of the radicals during ozone application were correlated with the amount of transition metal ions and were more intensive in parts of grains richer in easily oxidized iron species Fe(II), located in inorganic structures. On the contrary, Fe(II) ions situated in embryos were stabilized by organic matrix and did not undergo oxidation by ozone.
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Affiliation(s)
- Maria Łabanowska
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
| | - Magdalena Kurdziel
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
| | - Maria Filek
- Institute of Biology, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland; The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland
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14
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Li X, Cao X, Wu G, Temple T, Coulon F, Sui H. Ozonation of diesel-fuel contaminated sand and the implications for remediation end-points. Chemosphere 2014; 109:71-76. [PMID: 24873709 DOI: 10.1016/j.chemosphere.2014.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/07/2014] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
In this study, we investigate specifically the influence of soil grain size and water content on the degradation of n-alkane fractions and the formation of aldehydes and carboxylic acid during ozonation. 15 g of quartz sand spiked with diesel (25 g kg(-1)) were exposed to ozone for 20 h at concentrations of 10, 30 and 50 mg L(-1), respectively. Results indicated that ozonation of the n-alkanes in fine grain size sand (0.15-0.25 mm) was 1.2 times faster than coarse sand due to higher surface contact area between O3 and sand particles. Soil moisture below 18% w/w did not influence the ozonation efficiency. In contrast the ozonation led to an increase of acidity of the sand samples (pH=3.0) after 20 h treatment. This was due to the formation of carboxylic acid. Formaldehyde, one of the key by-products of ozonation, was always <13 mg kg(-1) after the treatment which is below the industrial soil clean-up target level. While the aldehydes and carboxylic acid further reacted with O3 and their ozonation rate were slower than those of the alkanes suggesting that the hydroxylated by-products accumulated in the sand during the process. Overall the findings demonstrated that not only the alkanes but also aldehydes and carboxylic acid should be considered when defining remediation end-points.
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Affiliation(s)
- Xingang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; National Engineering Research Centre for Distillation Technology, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Xingtao Cao
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Department of Environmental Science and Technology, School of Applied Science, Cranfield University, Cranfield MK43 0AL, UK
| | - Guozhong Wu
- Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Tracey Temple
- Centre for Defence Chemistry, Cranfield University, Shrivenham SN6 8LA, UK
| | - Frédéric Coulon
- Department of Environmental Science and Technology, School of Applied Science, Cranfield University, Cranfield MK43 0AL, UK.
| | - Hong Sui
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; National Engineering Research Centre for Distillation Technology, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
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15
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Sung HJ, Song WJ, Kim KP, Ryu S, Kang DH. Combination effect of ozone and heat treatments for the inactivation of Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes in apple juice. Int J Food Microbiol 2013; 171:147-53. [PMID: 24362006 DOI: 10.1016/j.ijfoodmicro.2013.11.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 10/25/2013] [Accepted: 11/03/2013] [Indexed: 11/24/2022]
Abstract
We investigated the combination effect of ozone and heat treatments in apple juice for the inactivation of Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria monocytogenes. Apple juices inoculated with the three pathogens were treated with gaseous ozone and heat simultaneously for up to 1 min. Gaseous ozone treatment was progressed at a flow rate of 3.0 l/min with a concentration of 2.0-3.0 g/m³ and heat treatment was performed at temperatures of 25, 45, 50, and 55 °C. Populations of surviving pathogens decreased in all samples as treatment temperature increased from 25 to 55 °C. Heat treatment alone (25, 45, 50 and 55 °C) resulted in 0.20, 0.37, 2.16 and 2.54 log CFU/ml reductions of E. coli O157:H7, respectively, in apple juice. Combination treatment of ozone and heat for 1 min reduced this pathogen by 1.50 and 1.60 log CFU/ml, respectively, at 25 and 45 °C, and below the detection limit (1 log CFU/ml) at 50 and 55 °C. We found a synergistic effect in the inactivation of pathogens in apple juice treated with ozone and heated at 50 °C. The reduction trend of S. Typhimurium and L. monocytogenes in apple juice was similar to that of E. coli O157:H7. There were no significant changes of Hunter color values when apple juices were treated with heat only and the combination of ozone and heat. Residual ozone was measured following ozone treatment. In all ozone treated samples, the concentration of residual ozone was reduced to under acceptable levels (<0.4 mg/l). In conclusion, the combination treatment of ozone and heat was significantly effective in the inactivation of foodborne pathogens while maintaining acceptable apple juice quality.
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Affiliation(s)
- Hye-Jung Sung
- Department of Food and Animal Biotechnology, School of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Science, Seoul National University, San 56-1, Sillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea; Department of Food Science and Technology, College of Agriculture and Life Sciences, Chonbuk National University, Jeonju, Republic of Korea
| | - Won-Jae Song
- Department of Food and Animal Biotechnology, School of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Science, Seoul National University, San 56-1, Sillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea; Department of Food Science and Technology, College of Agriculture and Life Sciences, Chonbuk National University, Jeonju, Republic of Korea
| | - Kwang-Pyo Kim
- Department of Food Science and Technology, College of Agriculture and Life Sciences, Chonbuk National University, Jeonju, Republic of Korea
| | - Sangryeol Ryu
- Department of Food and Animal Biotechnology, School of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Science, Seoul National University, San 56-1, Sillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea; Department of Food Science and Technology, College of Agriculture and Life Sciences, Chonbuk National University, Jeonju, Republic of Korea
| | - Dong-Hyun Kang
- Department of Food and Animal Biotechnology, School of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agricultural and Life Science, Seoul National University, San 56-1, Sillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea; Department of Food Science and Technology, College of Agriculture and Life Sciences, Chonbuk National University, Jeonju, Republic of Korea.
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16
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Brown LD, Pérez-Estrada L, Wang N, El-Din MG, Martin JW, Fedorak PM, Ulrich AC. Indigenous microbes survive in situ ozonation improving biodegradation of dissolved organic matter in aged oil sands process-affected waters. Chemosphere 2013; 93:2748-2755. [PMID: 24112657 DOI: 10.1016/j.chemosphere.2013.09.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 09/09/2013] [Accepted: 09/11/2013] [Indexed: 06/02/2023]
Abstract
The oil sands industry faces significant challenges in developing effective remediation technologies for process-affected water stored in tailings ponds. Naphthenic acids, a complex mixture of cycloaliphatic carboxylic acids, have been of particular concern because they concentrate in tailings ponds and are a component of the acutely toxic fraction of process water. Ozone treatment has been demonstrated as an effective means of rapidly degrading naphthenic acids, reducing process water toxicity, and increasing its biodegradability following seeding with the endogenous process water bacteria. This study is the first to examine subsequent in situ biodegradation following ozone pretreatment. Two aged oil sands process-affected waters from experimental reclamation tailings ponds were ozonated to reduce the dissolved organic carbon, to which naphthenic acids contributed minimally (<1mgL(-1)). Treatment with an ozone dose of 50mgL(-1) improved the 84d biodegradability of remaining dissolved organic carbon during subsequent aerobic incubation (11-13mgL(-1) removed from aged process-affected waters versus 5mgL(-1) when not pretreated with ozone). The ozone-treated indigenous microbial communities were as capable of degrading organic matter as the same community not exposed to ozone. This supports ozonation coupled with biodegradation as an effective and feasible treatment option.
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Affiliation(s)
- Lisa D Brown
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada
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17
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Shah NN, Rahman RA, Hashim DM. Changes in physicochemical characteristics of ozone-treated raw white rice. J Food Sci Technol 2015; 52:1525-33. [PMID: 25745221 DOI: 10.1007/s13197-013-1111-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/08/2013] [Accepted: 07/18/2013] [Indexed: 10/26/2022]
Abstract
Ozone dose from 0.1 to 0.4 ppm has been proven to be effective in lowering Bacillus cereus count in uncooked and cooked rice. However, it induces physicochemical changes in raw white rice. Physicochemical tests were done to see the effect of ozone treatment towards moisture content, pH, color, hardness of uncooked rice, adhesiveness and hardness of cooked rice, cooking quality and total solids. Results have shown that moisture content, adhesiveness and hardness of cooked rice and uncooked rice have not undergone any significant changes (P > 0.05) in comparison with controlled rice sample. Meanwhile, color (L* and b* value), pH, total solids and cooking quality results have shown significant changes (P < 0.05). These analyses proved that limitations should be applied to ozone concentration and exposure time to minimize any detrimental effects on the physicochemical characteristics of rice.
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