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Rasouli S, Rezaei N, Zendehboudi S, Duan X, Legge RL, Chatzis I. Selective and Continuous Oil Removal from Oil-Water Mixtures Using a Superhydrophobic and Superoleophilic Stainless Steel Mesh Tube. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4100-4112. [PMID: 36893017 DOI: 10.1021/acs.langmuir.2c03480] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The development of continuous oil-water separation processes has applications in the treatment of industrial oily wastewater and effective management of oil spills. In this research, the performance of a superhydrophobic-superoleophilic (SHSO) membrane in oil-water separation is investigated through dynamic tests. We investigate the effects of the total flow rate and oil concentration on the separation efficiency using an as-fabricated SHSO mesh tube. To construct the SHSO membrane, a tubular stainless steel mesh is dip-coated into a solution, containing a long-chain alkyl silane (Dynasylan F8261) and functionalized silica nanoparticles (AEROSIL R812). The as-prepared SHSO mesh tube illustrates a water contact angle of 164° and an oil contact angle of zero for hexane. A maximum oil separation efficiency (SE) of 97% is obtained when the inlet oil-water mixture has the lowest flow rate (5 mL/min) with an oil concentration of 10 vol %, while the minimum oil SE (86%) is achieved for the scenario with the highest total flow rate (e.g., 15 mL/min) and the highest oil concentration (e.g., 50 vol %). The water SE of about 100% in the tests indicates that the water separation is not affected by the total flow rate and oil concentration, due to the superhydrophobic state of the fabricated mesh. The clear color of water and oil output streams also reveals the high SE of both phases in dynamic tests. The outlet oil flux increases from 314 to 790 (L/m2·h) by increasing the oil permeate flow rate from 0.5 to 7.5 (mL/min). The linear behavior of the cumulative amounts of collected oil and water with time demonstrates the high separation performance of a single SHSO mesh, implying no pore blocking during dynamic tests. The significant oil SE (97%) of the fabricated SHSO membrane with robust chemical stability shows its promising potential for industrial-scale oil-water separation applications.
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Affiliation(s)
- Seyedabbas Rasouli
- Faculty of Engineering and Applied Science, Memorial University, St. John's, Newfoundland and Labrador A1B 3X5, Canada
| | - Nima Rezaei
- Faculty of Engineering and Applied Science, Memorial University, St. John's, Newfoundland and Labrador A1B 3X5, Canada
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology, Lappeenranta FI-53851, Finland
| | - Sohrab Zendehboudi
- Faculty of Engineering and Applied Science, Memorial University, St. John's, Newfoundland and Labrador A1B 3X5, Canada
| | - Xili Duan
- Faculty of Engineering and Applied Science, Memorial University, St. John's, Newfoundland and Labrador A1B 3X5, Canada
| | - Raymond L Legge
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Ioannis Chatzis
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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2
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Linke JA, Rayat A, Ward JM. Production of indigo by recombinant bacteria. BIORESOUR BIOPROCESS 2023; 10:20. [PMID: 36936720 PMCID: PMC10011309 DOI: 10.1186/s40643-023-00626-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 01/06/2023] [Indexed: 03/15/2023] Open
Abstract
Indigo is an economically important dye, especially for the textile industry and the dyeing of denim fabrics for jeans and garments. Around 80,000 tonnes of indigo are chemically produced each year with the use of non-renewable petrochemicals and the use and generation of toxic compounds. As many microorganisms and their enzymes are able to synthesise indigo after the expression of specific oxygenases and hydroxylases, microbial fermentation could offer a more sustainable and environmentally friendly manufacturing platform. Although multiple small-scale studies have been performed, several existing research gaps still hinder the effective translation of these biochemical approaches. No article has evaluated the feasibility and relevance of the current understanding and development of indigo biocatalysis for real-life industrial applications. There is no record of either established or practically tested large-scale bioprocess for the biosynthesis of indigo. To address this, upstream and downstream processing considerations were carried out for indigo biosynthesis. 5 classes of potential biocatalysts were identified, and 2 possible bioprocess flowsheets were designed that facilitate generating either a pre-reduced dye solution or a dry powder product. Furthermore, considering the publicly available data on the development of relevant technology and common bioprocess facilities, possible platform and process values were estimated, including titre, DSP yield, potential plant capacities, fermenter size and batch schedule. This allowed us to project the realistic annual output of a potential indigo biosynthesis platform as 540 tonnes. This was interpreted as an industrially relevant quantity, sufficient to provide an annual dye supply to a single industrial-size denim dyeing plant. The conducted sensitivity analysis showed that this anticipated output is most sensitive to changes in the reaction titer, which can bring a 27.8% increase or a 94.4% drop. Thus, although such a biological platform would require careful consideration, fine-tuning and optimization before real-life implementation, the recombinant indigo biosynthesis was found as already attractive for business exploitation for both, luxury segment customers and mass-producers of denim garments. Graphical Abstract Supplementary Information The online version contains supplementary material available at 10.1186/s40643-023-00626-7.
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Affiliation(s)
- Julia A. Linke
- grid.83440.3b0000000121901201Chemical Engineering Department, University College London (UCL), Torrington Place, London, WC1E 7JE UK
- grid.83440.3b0000000121901201Division of Medicine, University College London (UCL), 5 University Street, London, WC1E 6JF UK
| | - Andrea Rayat
- grid.83440.3b0000000121901201Biochemical Engineering Department, University College London (UCL), Gower St., London, WC1E 6BT UK
| | - John M. Ward
- grid.83440.3b0000000121901201Biochemical Engineering Department, University College London (UCL), Gower St., London, WC1E 6BT UK
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3
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Pattiram PD, Abas F, Suleiman N, Mohamad Azman E, Chong GH. Edible oils as a co-extractant for the supercritical carbon dioxide extraction of flavonoids from propolis. PLoS One 2022; 17:e0266673. [PMID: 35413072 PMCID: PMC9004773 DOI: 10.1371/journal.pone.0266673] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 03/24/2022] [Indexed: 11/21/2022] Open
Abstract
Propolis is a good source for flavonoids, however, their recovery is challenging, as it is a waxy material. This study investigated edible oils virgin coconut oil (VCO), corn oil (CO), and ghee (G) as co-extractants for the supercritical carbon dioxide (scCO2) extraction of flavonoids from the propolis. The extraction of flavonoids using 20% VCO as co-extractant with scCO2 (25 g/min) for 210 min at 150 bar and 50°C was found to be the most appropriate, yielding a total flavonoid content (TFC) of 11.7 mg/g and 25% TFC recovery. At a higher temperature (60°C) and pressure (250 bar and 350 bar), the propolis became softer and compressed causing the extractions to retrograde. The extraction curves correlated to the diffusion model with 1.6% (AARD). The matrix diffusivities increased from 4.7 × 10−11 m2/s (scCO2) to 6.9 × 10−11–21.4 × 10−11 m2/s upon the addition of edible oils. Thus, edible oils could be used with scCO2 to improve the flavonoid extraction from propolis.
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Affiliation(s)
- Parveen Devi Pattiram
- Faculty of Food Science and Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Faridah Abas
- Faculty of Food Science and Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Norhidayah Suleiman
- Faculty of Food Science and Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
- Supercritical Fluid Center, Faculty of Food Science and Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Ezzat Mohamad Azman
- Faculty of Food Science and Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Gun Hean Chong
- Faculty of Food Science and Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
- Supercritical Fluid Center, Faculty of Food Science and Technology, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
- * E-mail:
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4
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Li C, Lee B, Wang C, Bajpayee A, Douglas LD, Phillips BK, Yu G, Rivera-Gonzalez N, Peng BJ, Jiang Z, Sue HJ, Banerjee S, Fang L. Photopolymerized superhydrophobic hybrid coating enabled by dual-purpose tetrapodal ZnO for liquid/liquid separation. MATERIALS HORIZONS 2022; 9:452-461. [PMID: 34846413 DOI: 10.1039/d1mh01672e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Low-cost and scalable superhydrophobic coating methods provide viable approaches for energy-efficient separation of immiscible liquid/liquid mixtures. A scalable photopolymerization method is developed to functionalize porous substrates with a hybrid coating of tetrapodal ZnO (T-ZnO) and polymethacrylate, which exhibits simultaneous superhydrophobicity and superoleophilicity. Here, T-ZnO serves dual purposes by (i) initiating radical photopolymerization during the fabrication process through a hole-mediated pathway and (ii) providing a hierarchical surface roughness to amplify wettability characteristics and suspend liquid droplets in the metastable Cassie-Baxter regime. Photopolymerization provides a means to finely control the conversion and spatial distribution of the formed polymer, whilst allowing for facile large-area fabrication and potential coating on heat-sensitive substrates. Coated stainless-steel meshes and filter papers with desired superhydrophobic/superoleophilic properties exhibit excellent performance in separating stratified oil/water, oil/ionic-liquid, and water/ionic-liquid mixtures as well as water-in-oil emulsions. The hybrid coating demonstrates desired mechanical robustness and chemical resistance for their long-term application in large-scale energy-efficient separation of immiscible liquid/liquid mixtures.
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Affiliation(s)
- Chenxuan Li
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
| | - Brian Lee
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
| | - Chenxu Wang
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
| | - Aayushi Bajpayee
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
| | - Lacey D Douglas
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
| | - Bailey K Phillips
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
| | - Guanghua Yu
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
| | - Natalia Rivera-Gonzalez
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
| | - Bo-Ji Peng
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
| | - Zhiyuan Jiang
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
| | - Hung-Jue Sue
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
| | - Sarbajit Banerjee
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
| | - Lei Fang
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX 77843, USA.
- Department of Materials Science & Engineering, Texas A&M University, 3003 TAMU, College Station, TX 77843, USA
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5
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Jermwongruttanachai P, Pathaveerat S, Noypitak S. Effect of temperature on thermal denaturation of skimmed coconut milk to produce a new product, coconut water. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.16046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Phiraiwan Jermwongruttanachai
- Department of Agricultural Engineering Faculty of Engineering at Kamphaengsaen Kasetsart University Nakhon Pathom Thailand
| | - Siwalak Pathaveerat
- Department of Agricultural Engineering Faculty of Engineering at Kamphaengsaen Kasetsart University Nakhon Pathom Thailand
| | - Sirinad Noypitak
- Department of Agricultural Engineering Faculty of Engineering at Kamphaengsaen Kasetsart University Nakhon Pathom Thailand
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6
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Olaniyan OT, Ojewale OA, Dare A, Adebayo O, Enyojo JE, Okotie GE, Adetunji CO, Mada BS, Okoli BJ, Eweoya OO. Cocos nucifera L. oil alleviates lead acetate-induced reproductive toxicity in sexually-matured male Wistar rats. J Basic Clin Physiol Pharmacol 2021; 33:297-303. [PMID: 33713589 DOI: 10.1515/jbcpp-2020-0281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 11/25/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Lead primarily affects male reproductive functions via hormonal imbalance and morphological damage to the testicular tissue with significant alteration in sperm profile and oxidative markers. Though, different studies have reported that Cocos nucifera L. oil has a wide range of biological effects, this study aimed at investigating the effect of Cocos nucifera L. oil on lead acetate-induced reproductive toxicity in male Wistar rats. METHODS Twenty (20) sexually matured male Wistar rats (55-65 days) were randomly distributed into four groups (n=5). Group I (negative control)-distilled water orally for 56 days, Group II (positive control)-5 mg/kg bwt lead acetate intraperitoneally (i.p.) for 14 days, Group III-6.7 mL/kg bwt Cocos nucifera L. oil orally for 56 days and Group IV-lead acetate intraperitoneally (i.p.) for 14 days and Cocos nucifera L. oil for orally for 56 days. Rats were sacrificed by diethyl ether, after which the serum, testis and epididymis were collected and used for semen analysis, biochemical and histological analysis. RESULTS The lead acetate significantly increases (p<0.05) testicular and epididymal malondialdehyde (MDA) levels, while a significant reduction (p<0.05) in sperm parameters, organ weight, testosterone and luteinizing hormone was observed when compared with the negative control. The coadministration of Cocos nucifera oil with lead acetate significantly increases (p<0.05) testosterone, luteinizing hormone, sperm parameters and organ weight, with a significant decrease (p<0.05) in MDA levels compared with positive control. Histological analysis showed that lead acetate distorts testicular cytoarchitecture and germ cell integrity while this was normalized in the cotreated group. CONCLUSIONS Cocos nucifera oil attenuates the deleterious effects of lead acetate in male Wistar rats, which could be attributed to its polyphenol content and antioxidant properties.
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Affiliation(s)
- Olugbemi T Olaniyan
- Department of Physiology, Laboratory for Reproductive Biology and Developmental Programming, Edo State University Uzairue, Iyamho, Edo State, Nigeria
| | - Olakunle A Ojewale
- Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, Bushenyi, Uganda
| | - Ayobami Dare
- Department of Physiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Olufemi Adebayo
- Department of Physiology, Bingham University Karu, New Karu, Nasarawa State, Nigeria
| | - Joseph E Enyojo
- Department of Physiology, Bingham University Karu, New Karu, Nasarawa State, Nigeria
| | - Gloria E Okotie
- Department of Physiology, University of Ibadan, Ibadan, Nigeria
| | - Charles O Adetunji
- Department of Microbiology, Applied Microbiology, Biotechnology and Nanotechnology Laboratory, Edo State University Uzairue, Iyamho, Edo State, Nigeria
| | | | - Bamidele J Okoli
- Institute of Chemical and Biotechnology, Vaal University of Technology, Southern Gauteng Science and Technology Park, Sebokeng, South Africa
| | - Olugbenga O Eweoya
- School of Medicine and Allied Health Sciences, University of the Gambia, Banjul, The Gambia
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7
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Cao Y, Jin Y, Li J, Zhou K, Zhuge F. Effects of emulsion properties on demulsification of the phosphoric acid–tributyl phosphate (W/O) emulsion by hydrocyclone. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2019.1575414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Yuqing Cao
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, PR China
| | - Yang Jin
- Department of Chemical Engineering, Sichuan University, Chengdu, PR China
| | - Jun Li
- Department of Chemical Engineering, Sichuan University, Chengdu, PR China
| | - Kun Zhou
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, PR China
| | - Fuyu Zhuge
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, PR China
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8
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Chen C, Chen B. Graphene oxide coated meshes with stable underwater superoleophobicity and anti-oil-fouling property for highly efficient oil/water separation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 696:133777. [PMID: 31442728 DOI: 10.1016/j.scitotenv.2019.133777] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/02/2019] [Accepted: 08/04/2019] [Indexed: 05/25/2023]
Abstract
Developing underwater superoleophobic filtration materials with robust stability and excellent anti-oil-fouling performance in harsh environments is desired for high efficiency oil/water separation. In this work, irregular hydrophilic graphene oxide (GO) was adopted as a coating material to modify oxidized copper mesh with desired hierarchical surface roughness and hydrophilic composition through a novel in situ copper ion induced crosslinking method. The combination of microscale copper wires and nanoscale hydrophilic GO sheets endowed the resultant GO coated oxidized copper mesh (GO@CuO) with unique underwater superoleophobicity and excellent anti-oil-fouling property. Moreover, the mesh exhibited excellent stability in corrosive solutions with no apparent variations in wetting properties, indicating its good stability. The as-prepared GO@CuO mesh can be applied to separate oil/water mixtures with high efficiency (>99.49%) and good reusability. Due to the excellent anti-oil-fouling property, high separation efficiency, and good stability, the as-prepared underwater superoleophobic mesh could find broad applications in oil/water separations.
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Affiliation(s)
- Cheng Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
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9
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Patil U, Benjakul S. Coconut Milk and Coconut Oil: Their Manufacture Associated with Protein Functionality. J Food Sci 2018; 83:2019-2027. [DOI: 10.1111/1750-3841.14223] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 05/20/2018] [Accepted: 05/29/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Umesh Patil
- Dept. of Food Technology; Faculty of Agro-Industry; Prince of Songkla Univ.; Hat Yai Songkhla 90112 Thailand
| | - Soottawat Benjakul
- Dept. of Food Technology; Faculty of Agro-Industry; Prince of Songkla Univ.; Hat Yai Songkhla 90112 Thailand
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10
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Ogedengbe OO, Naidu ECS, Akang EN, Offor U, Onanuga IO, Peter AI, Jegede AI, Azu OO. Virgin coconut oil extract mitigates testicular-induced toxicity of alcohol use in antiretroviral therapy. Andrology 2018; 6:616-626. [DOI: 10.1111/andr.12490] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 02/28/2018] [Accepted: 03/08/2018] [Indexed: 12/19/2022]
Affiliation(s)
- O. O. Ogedengbe
- Discipline of Clinical Anatomy; Nelson R. Mandela School of Medicine; University of Kwazulu-Natal; Durban South Africa
- Department of Anatomy; College of Medicine and Health Sciences; Afe Babalola University; Ado Ekiti Nigeria
| | - E. C. S. Naidu
- Discipline of Clinical Anatomy; Nelson R. Mandela School of Medicine; University of Kwazulu-Natal; Durban South Africa
| | - E. N. Akang
- Discipline of Clinical Anatomy; Nelson R. Mandela School of Medicine; University of Kwazulu-Natal; Durban South Africa
| | - U. Offor
- Discipline of Clinical Anatomy; Nelson R. Mandela School of Medicine; University of Kwazulu-Natal; Durban South Africa
| | - I. O. Onanuga
- Discipline of Clinical Anatomy; Nelson R. Mandela School of Medicine; University of Kwazulu-Natal; Durban South Africa
| | - A. I. Peter
- Discipline of Clinical Anatomy; Nelson R. Mandela School of Medicine; University of Kwazulu-Natal; Durban South Africa
| | - A. I. Jegede
- Discipline of Clinical Anatomy; Nelson R. Mandela School of Medicine; University of Kwazulu-Natal; Durban South Africa
| | - O. O. Azu
- Discipline of Clinical Anatomy; Nelson R. Mandela School of Medicine; University of Kwazulu-Natal; Durban South Africa
- Department of Anatomy; School of Medicine; University of Namibia; Windhoek Namibia
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11
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Ogedengbe OO, Jegede AI, Onanuga IO, Offor U, Peter AI, Akang EN, Naidu ECS, Azu OO. Adjuvant potential of virgin coconut oil extract on antiretroviral therapy-induced testicular toxicity: An ultrastructural study. Andrologia 2017; 50. [PMID: 29230854 DOI: 10.1111/and.12930] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2017] [Indexed: 01/10/2023] Open
Abstract
The effects of Virgin coconut oil as an adjuvant to highly active antiretroviral therapy (HAART) were investigated on the testicular ultrastructure and biochemical markers in rats. Twenty male Sprague-Dawley rats, weighing 153-169 g were divided into four groups and treated as follows: control A (distilled water), B (HAART), C (HAART+Virgin coconut oil 10 ml/kg) and D (Virgin coconut oil [VCO] 10 ml/kg). Testicular segments were evaluated using transmission electron microscopy. Serum was assayed for testosterone, luteinising hormone, follicle stimulating hormone and testicular tissue for malondialdehyde and glutathione. Ultrastructure of basement membrane (Bm), mitochondria and spermatocytes was normal in the control group. HAART-treated group showed significant increase (p < .01) in Bm thickness with significant decrease in Leydig cell nuclear diameter (p < .05) and volume (p < .01) when compared with control group. Mitochondrial cristae appear collapsed, and Sertoli cells showed cytoplasmic vacuolations. HAART+VCO group showed improved ultrastructural details in Bm, and Sertoli cell and Leydig cells show abundant lipid droplets. Virgin coconut oil-treated group showed thinning of Bm with otherwise normal ultrastructural features of organelles. HAART-treated group showed significant increase (p < .01) in testosterone levels. There was no significant effect on malondialdehyde and glutathione levels. Virgin coconut oil improved testicular morphology and reversed HAART-induced ultrastructural alterations. Further studies on putative mechanism are required.
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Affiliation(s)
- O O Ogedengbe
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa.,Department of Anatomy, College of Medicine and Health Sciences, Afe Babalola University, Ado Ekiti, Nigeria
| | - A I Jegede
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - I O Onanuga
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - U Offor
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - A I Peter
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - E N Akang
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa.,Department of Anatomy, College of Medicine, University of Lagos, Lagos, Nigeria
| | - E C S Naidu
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - O O Azu
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa.,Department of Anatomy, School of Medicine, University of Namibia, Windhoek, Namibia
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12
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Ogedengbe OO, Jegede AI, Onanuga IO, Offor U, Naidu EC, Peter AI, Azu OO. Coconut Oil Extract Mitigates Testicular Injury Following Adjuvant Treatment with Antiretroviral Drugs. Toxicol Res 2016; 32:317-325. [PMID: 27818734 PMCID: PMC5080853 DOI: 10.5487/tr.2016.32.4.317] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/26/2016] [Accepted: 07/18/2016] [Indexed: 12/12/2022] Open
Abstract
Increased access to highly active antiretroviral therapy (HAART) has made the management of drug toxicities an increasingly crucial component of HIV. This study investigated the effects of adjuvant use of coconut oil and HAART on testicular morphology and seminal parameters in Sprague- Dawley rats. Twelve adult male Sprague-Dawley rats, weighing 153~169 g were distributed into four groups (A–D) and treated as follows: A served as control (distilled water); B (HAART cocktail- Zidovudine, Lamivudine and Nevirapine); C (HAART + Virgin coconut oil 10 mL/kg) and D (Virgin coconut oil 10 mL/kg). After 56 days of treatment, animals were killed and laparotomy to exercise the epididymis for seminal fluid analyses done whilst testicular tissues were processed for histomorphometric studies. Result showed a significant decline in sperm motility (P < 0.05) and count (P < 0.0001) in HAART-treated animals while there was insignificant changes in other parameters in groups C and D except count that was reduced (P < 0.0001) when compared with controls. Histomorphological studies showed HAART caused disorders in seminiferous tubular architecture with significant (P < 0.01) decline in epithelial height closely mirrored by extensive reticulin framework and positive PAS cells. Adjuvant Virgin coconut oil + HAART resulted in significant decrease in seminiferous tubular diameter (P < 0.05), but other morphometric and histological parameters were similar to control or Virgin coconut oil alone (which showed normal histoarchitecture levels). While derangements in testicular and seminal fluid parameters occurred following HAART, adjuvant treatment with Virgin coconut oil restored the distortions emanating thereof.
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Affiliation(s)
- Oluwatosin O Ogedengbe
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa; Department of Anatomy, College of Medicine and Health Sciences, Afe Babalola University, Ado Ekiti, Nigeria
| | - Ayoola I Jegede
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa; Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
| | - Ismail O Onanuga
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa; Department of Anatomy, Faculty of Biomedical Sciences, Kampala International University, Western Campus, Ishaka, Uganda
| | - Ugochukwu Offor
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - Edwin Cs Naidu
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
| | - Aniekan I Peter
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa; Department of Anatomy, Faculty of Basic Medical Sciences, University of Uyo-Nigeria, Uyo, Nigeria
| | - Onyemaechi O Azu
- Discipline of Clinical Anatomy, Nelson R. Mandela School of Medicine, University of Kwazulu-Natal, Durban, South Africa
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Senphan T, Benjakul S. Comparative Study on Virgin Coconut Oil Extraction Using Protease from Hepatopancreas of Pacific White Shrimp and Alcalase. J FOOD PROCESS PRES 2016. [DOI: 10.1111/jfpp.12771] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Theeraphol Senphan
- Department of Food Technology, Faculty of Agro-Industry; Prince of Songkla University; Hat Yai, Songkhla Thailand
| | - Soottawat Benjakul
- Department of Food Technology, Faculty of Agro-Industry; Prince of Songkla University; Hat Yai, Songkhla Thailand
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Cao Y, Jin Y, Li J, Zou D, Chen X. Demulsification of the phosphoric acid–tributyl phosphate (W/O) emulsion by hydrocyclone. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2015.12.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Kha TC, Nguyen MH, Roach PD, Stathopoulos CE. Ultrasound-Assisted Aqueous Extraction of Oil and Carotenoids from Microwave-Dried Gac (Momordica cochinchinensis Spreng) Aril. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2015. [DOI: 10.1515/ijfe-2014-0220] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The study aimed to optimise the ultrasound-assisted aqueous extraction of oil, β-carotene and lycopene from powdered microwave-dried gac arils. Ultrasound power, extraction time, powder particle size and the ratio of water to gac powder during the extraction, the centrifugal force used to recover the extracted components were investigated. Microwave-drying followed by aqueous extraction without ultrasound-assistance and air-drying followed by aqueous extraction with or without ultrasound-assistance was also carried out for comparisons. The gac material left behind after the extractions was also investigated using scanning electron microscopy (SEM). The results showed that ultrasound power of 32 W/g of aril powder, extraction time of 20 min, powder particle sizes of 0.3–0.5 mm, a ratio of water to powder of 9 g/g and a centrifugal force of 6,750×g gave optimal extraction efficiencies for oil (90%), β-carotene (84%) and lycopene (83%), and the oil had a low peroxide value (PV) of 2.2 meq/kg. The SEM analysis confirmed that the combination of microwave-drying followed by ultrasound-assisted aqueous extraction caused strong disruption of the gac aril cellular structures, which was consistent with the high extraction of oil, β-carotene and lycopene obtained with the combination. It was concluded that gac oil containing high amounts of β-carotene and lycopene and having a low PV could be extracted using microwave-drying and ultrasound-assisted aqueous extraction.
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Chen HX, Tang HM, Duan M, Liu YG, Liu M, Zhao F. Oil-water separation property of polymer-contained wastewater from polymer-flooding oilfields in Bohai Bay, China. ENVIRONMENTAL TECHNOLOGY 2015; 36:1373-1380. [PMID: 25420517 DOI: 10.1080/09593330.2014.990522] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, the effects of gravitational settling time, temperature, speed and time of centrifugation, flocculant type and dosage, bubble size and gas amount were investigated. The results show that the simple increase in settling time and temperature is of no use for oil-water separation of the three wastewater samples. As far as oil-water separation efficiency is concerned, increasing centrifugal speed and centrifugal time is highly effective for L sample, and has a certain effect on J sample, but is not valid for S sample. The flocculants are highly effective for S and L samples, and the oil-water separation efficiency increases with an increase in the concentration of inorganic cationic flocculants. There exist critical reagent concentrations for the organic cationic and the nonionic flocculants, wherein a higher or lower concentration of flocculant would cause a decrease in the treatment efficiency. Flotation is an effective approach for oil-water separation of polymer-contained wastewater from the three oilfields. The oil-water separation efficiency can be enhanced by increasing floatation agent concentration, flotation time and gas amount, and by decreasing bubble size.
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Affiliation(s)
- Hua-xing Chen
- a State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation Engineering , Southwest Petroleum University , Sichuan , Chengdu 610500 , People's Republic of China
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Rahmadi A, Abdiah I, Dewi Sukarno M, Purnaningsih T. KARAKTERISTIK FISIKOKIMIA DAN ANTIBAKTERI VIRGIN COCONUT OIL HASIL FERMENTASI BAKTERI ASAM LAKTAT. JURNAL TEKNOLOGI DAN INDUSTRI PANGAN 2013. [DOI: 10.6066/jtip.2013.24.2.178] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Dosumu OO, Akinola OB, Akang EN. Alcohol-induced testicular oxidative stress and cholesterol homeostasis in rats – The therapeutic potential of virgin coconut oil. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2012. [DOI: 10.1016/j.mefs.2011.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Angare D, Giri T, Tripathi DK, Alexander A, . A. Unexplored Areas and New Findings in Lipid Emulsion Serving as a Potential Drug Carrier for Lipophilic Drugs: A Review. ACTA ACUST UNITED AC 2012. [DOI: 10.3923/tmr.2012.1.24] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Anggadired K, Barlian A, Marga Pina YD, Anggraeny D. Virgin Coconut Oil Prevents Nicotine Dependence and Relapse. INT J PHARMACOL 2011. [DOI: 10.3923/ijp.2011.664.669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Do LD, Sabatini DA. Pilot Scale Study of Vegetable Oil Extraction by Surfactant-Assisted Aqueous Extraction Process. SEP SCI TECHNOL 2011. [DOI: 10.1080/01496395.2010.541401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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