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Kumar P, Perumal PK, Sumathi Y, Singhania RR, Chen CW, Dong CD, Patel AK. Nano-enabled microalgae bioremediation: Advances in sustainable pollutant removal and value-addition. ENVIRONMENTAL RESEARCH 2024; 263:120011. [PMID: 39284486 DOI: 10.1016/j.envres.2024.120011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2024] [Revised: 09/04/2024] [Accepted: 09/13/2024] [Indexed: 09/20/2024]
Abstract
Microalgae-assisted bioremediation, enriched by nanomaterial integration, offers a sustainable approach to environmental pollution mitigation while harnessing microalgae's potential as a biocatalyst and biorefinery resource. This strategy explores the interaction between microalgae, nanomaterials, and bioremediation, advancing sustainability objectives. The potent combination of microalgae and nanomaterials highlights the biorefinery's promise in effective pollutant removal and valuable algal byproduct production. Various nanomaterials, including metallic nanoparticles and semiconductor quantum dots, are reviewed for their roles in inorganic and organic pollutant removal and enhancement of microalgae growth. Limited studies have been conducted to establish nanomaterial's (CeO2, ZnO, Fe3O4, Al2O3, etc.) role on microalgae in pollution remediation; most studies cover inorganic pollutants (heavy metals and nutrients) remediation, exhibited 50-300% bioremediation efficiency improvement; however, some studies cover antibiotics and toxic dyes removal efficiency with 19-95% improvement. These aspects unveil the complex mechanisms underlying nanomaterial-pollutant-microalgae interactions, focusing on adsorption, photocatalysis, and quantum dot properties. Strategies to enhance bioremediation efficiency are discussed, including pollutant uptake improvement, real-time control, tailored nanomaterial design, and nutrient recovery. The review assesses recent advancements, navigates challenges, and envisions a sustainable future for bioremediation, underlining the transformative capacity of nanomaterial-driven microalgae-assisted bioremediation. This work aligns with Sustainable Development Goals 6 (Clean Water and Sanitation) and 12 (Responsible Consumption and Production) by exploring nanomaterial-enhanced microalgae bioremediation for sustainable pollution management and resource utilization.
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Affiliation(s)
- Prashant Kumar
- Institute of Aquatic Science and Technology, College of Hydrosphere, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan
| | - Pitchurajan Krishna Perumal
- Institute of Aquatic Science and Technology, College of Hydrosphere, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan
| | - Yamini Sumathi
- Institute of Aquatic Science and Technology, College of Hydrosphere, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan
| | - Reeta Rani Singhania
- Institute of Aquatic Science and Technology, College of Hydrosphere, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow, 226 029, Uttar Pradesh, India
| | - Chiu-Wen Chen
- Institute of Aquatic Science and Technology, College of Hydrosphere, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Cheng-Di Dong
- Institute of Aquatic Science and Technology, College of Hydrosphere, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
| | - Anil Kumar Patel
- Institute of Aquatic Science and Technology, College of Hydrosphere, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow, 226 029, Uttar Pradesh, India.
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Jin Y, Yu W, Zhang W, Wang C, Liu Y, Yuan WE, Feng Y. A novel fluorinated polyethyleneimine with microRNA-942-5p-sponges polyplex gene delivery system for non-small-cell lung cancer therapy. J Colloid Interface Sci 2023; 648:287-298. [PMID: 37301153 DOI: 10.1016/j.jcis.2023.05.153] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/18/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023]
Abstract
Gene delivery for non-small-cell lung cancer treatment has been a challenge due to low nucleic acid binding ability, cell-wall barrier, and high cytotoxicity. Cationic polymers, such as the traditional "golden standard" polyethyleneimine (PEI) 25 kDa have emerged as a promising carrier for non-coding RNA delivery. However, the high cytotoxicity associated with its high molecular weight has limited its application in gene delivery. To address this limitation, herein, we designed a novel delivery system using fluorine-modified polyethyleneimine (PEI) 1.8 kDa for microRNA-942-5p-sponges non-coding RNA delivery. Compared to PEI 25 kDa, this novel gene delivery system demonstrated an approximately six-fold enhancement in endocytosis capability and maintain a higher cell viability. In vivo studies also showed good biosafety and anti-tumor effects, attribute to the positive charge of PEI and the hydrophobic and oleophobic properties of the fluorine-modified group. This study provides an effective gene delivery system for non-small-cell lung cancer treatment.
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Affiliation(s)
- Yi Jin
- Shanghai Frontiers Science Center of Drug Target Identification and Delivery, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China., National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wei Yu
- Shanghai Frontiers Science Center of Drug Target Identification and Delivery, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China., National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wenkai Zhang
- Shanghai Frontiers Science Center of Drug Target Identification and Delivery, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China., National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chen Wang
- Department of Respiration, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Kunming University of Science and Technology, Kunming, China
| | - Yao Liu
- Shanghai Frontiers Science Center of Drug Target Identification and Delivery, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China., National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wei-En Yuan
- Shanghai Frontiers Science Center of Drug Target Identification and Delivery, School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China., National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yun Feng
- Department of Respiration, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Kunming University of Science and Technology, Kunming, China.
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Behavior of Surfactants in Oil Extraction by Surfactant-Assisted Acidic Hydrothermal Process from Chlorella vulgaris. Appl Biochem Biotechnol 2020; 193:319-334. [PMID: 32954483 DOI: 10.1007/s12010-020-03426-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 09/11/2020] [Indexed: 10/23/2022]
Abstract
The feasibility of surfactants for enhancement of extraction efficiencies in wet oil extraction through an acidic hydrothermal process was evaluated. Three different types of surfactants were tested: anionic (SDBS and SDS), cationic (CTAB and MBC), and non-ionic (IGEPAL CA-210 and Tween 60). The total fatty acid content of Chlorella vulgaris was 291.0 mg/g cell. Under the no-surfactant condition, the oil-extraction yield of the acidic hydrothermal extraction was 75.5%. The addition of SDBS and MBC at the 0.4% concentration showed enhanced oil-extraction performance, 85.4 and 85.7% yields, respectively. CTAB and Tween 60 showed low extraction yields, less than 43.0%. SDS and IGEPAL CA-210 showed high oil-extraction yields, higher, in fact, than the initial fatty acid content, due to surfactant partitioning into microalgal oil. With increasing surfactant concentration, the oil-extraction yields of CTAB decreased, those of IGEPAL CA-210 gradually increased, and those of SDBS increased and then decreased again. The best performance, an oil-extraction yield of 95.6%, was observed under the 0.2% SDBS, 120 °C, 1 h condition. Although IGEPAL CA-210 showed the high net oil-extraction yield of 98.3% at the 0.6% surfactant concentration, 61.2% of surfactant was partitioned into oil. Graphical abstract.
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Abstract
The world energy production trumped by the exhaustive utilization of fossil fuels has highlighted the importance of searching for an alternative energy source that exhibits great potential. Ongoing efforts are being implemented to resolve the challenges regarding the preliminary processes before conversion to bioenergy such as pretreatment, enzymatic hydrolysis and cultivation of biomass. Nanotechnology has the ability to overcome the challenges associated with these biomass sources through their distinctive active sites for various reactions and processes. In this review, the potential of nanotechnology incorporated into these biomasses as an aid or addictive to enhance the efficiency of bioenergy generation has been reviewed. The fundamentals of nanomaterials along with their various bioenergy applications were discussed in-depth. Moreover, the optimization and enhancement of bioenergy production from lignocellulose, microalgae and wastewater using nanomaterials are comprehensively evaluated. The distinctive features of these nanomaterials contributing to better performance of biofuels, biodiesel, enzymes and microbial fuel cells are also critically reviewed. Subsequently, future trends and research needs are highlighted based on the current literature.
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Nhu Ngoc LT, Park SM, Oh JH, Shin HY, Kim MI, Lee HU, Lee KB, Lee KS, Moon JY, Kwon OH, Yang HY, Lee YC. Cerium Aminoclay-A Potential Hybrid Biomaterial for Anticancer Therapy. ACS Biomater Sci Eng 2019; 5:5857-5871. [PMID: 33405676 DOI: 10.1021/acsbiomaterials.9b00789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In this study, novel biomedical properties of Ce-aminoclay (CeAC) were investigated through in vitro and in vivo assays. CeAC (≥500 μg/mL) can selectively kill cancer cells (A549, Huh-1, AGS, C33A, HCT116, and MCF-7 cells) while leaving most normal cells unharmed (WI-38 and CCD-18Co cells). Notably, it displayed a high contrast of simultaneous imaging in HeLa cells by blue photoluminescence without any fluorescence dye. Its anticancer mechanism has been fully demonstrated through apoptosis assays; herein CeAC induced high-level apoptosis (16%), which promoted the expression of proapoptotic proteins (Bax, p53, and caspase 9) in tumor cells. Besides, its biological behavior was determined through antitumor effects using intravenous and intratumoral administration routes in mice implanted with HCT116 cells. During a 40 day trial, the tumor volume and tumor weight were reduced by a maximum of 92.24 and 86.11%, respectively. The results indicate that CeAC exhibits high bioavailability and therapeutic potential based on its unique characteristics, including high antioxidant capacity and electrostatic interaction between its amino functional groups and the mucosal surface of cells. In summary, it is suggested that CeAC, with its high bioimaging contrast, can be a promising anticancer agent for future biomedical applications.
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Affiliation(s)
- Le Thi Nhu Ngoc
- Department of BioNano Technology, Gachon University, 1342 Seongnam-Daero, Sujeong-Gu, Seongnam-Si, Gyeonggi-do 13120, Republic of Korea
| | - Se-Myo Park
- Department of Predictive Toxicology, Korea Institute of Toxicology (KIT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Jung-Hwa Oh
- Department of Predictive Toxicology, Korea Institute of Toxicology (KIT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Ho Yun Shin
- Department of BioNano Technology, Gachon University, 1342 Seongnam-Daero, Sujeong-Gu, Seongnam-Si, Gyeonggi-do 13120, Republic of Korea
| | - Moon Il Kim
- Department of BioNano Technology, Gachon University, 1342 Seongnam-Daero, Sujeong-Gu, Seongnam-Si, Gyeonggi-do 13120, Republic of Korea
| | - Hyun Uk Lee
- Division of Materials Science, Korea Basic Science Institute (KBSI), Daejeon 305-333, Republic of Korea
| | - Kyung-Bok Lee
- Electron Microscopy Research Center, Korea Basic Science Institute (KBSI), 161 Yeongudanji-ro, Ochang-eup, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do 28119, Republic of Korea
| | - Kug-Seung Lee
- Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Ju-Young Moon
- Department of Beauty Design Management, Hansung University, 116 Samseongyoro-16gil, Seoul 02876, Korea
| | - Oh-Hyeok Kwon
- Department of Beauty Design Management, Hansung University, 116 Samseongyoro-16gil, Seoul 02876, Korea
| | - Hee Young Yang
- Department of Predictive Toxicology, Korea Institute of Toxicology (KIT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-Daero, Sujeong-Gu, Seongnam-Si, Gyeonggi-do 13120, Republic of Korea
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Nguyen MK, Moon JY, Bui VKH, Oh YK, Lee YC. Recent advanced applications of nanomaterials in microalgae biorefinery. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101522] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Song HP, Lee Y, Bui VKH, Oh YK, Park HG, Kim MI, Lee YC. Effective Peroxidase-Like Activity of Co-Aminoclay [CoAC] and Its Application for Glucose Detection. SENSORS (BASEL, SWITZERLAND) 2018; 18:E457. [PMID: 29401685 PMCID: PMC5855466 DOI: 10.3390/s18020457] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 01/30/2018] [Accepted: 01/31/2018] [Indexed: 01/08/2023]
Abstract
In this study, we describe a novel peroxidase-like activity of Co-aminoclay [CoAC] present at pH ~5.0 and its application to fluorescent biosensor for the determination of H₂O₂ and glucose. It is synthesized with aminoclays (ACs) entrapping cationic metals such as Fe, Cu, Al, Co., Ce, Ni, Mn, and Zn to find enzyme mimicking ACs by sol-gel ambient conditions. Through the screening of catalytic activities by the typical colorimetric reaction employing 2,2'-azino-bis(3-ethylbenzo-thiazoline-6-sulfonic acid)diammonium salt (ABTS) as a substrate with or without H₂O₂, Fe, Cu, and CoACs are found to exhibit peroxidase-like activity, as well as oxidase-like activity was observed from Ce and MnACs. Among them, CoAC shows exceptionally high peroxidase-like activity, presumably due to its ability to induce electron transfer between substrates and H₂O₂. CoAC is then used to catalyze the oxidation of Amplex® UltraRed (AUR) into a fluorescent end product, which enables a sensitive fluorescent detection of H₂O₂. Moreover, a highly sensitive and selective glucose biosensing strategy is developed, based on enzyme cascade reaction between glucose oxidase (GOx) and CoAC. Using this strategy, a highly linear fluorescence enhancement is verified when the concentration of glucose is increased in a wide range from 10 μM to 1 mM with a lower detection limit of 5 μM. The practical diagnostic capability of the assay system is also verified by its use to detect glucose in human blood serum. Based on these results, it is anticipated that CoAC can serve as potent peroxidase mimetics for the detection of clinically important target molecules.
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Affiliation(s)
- Han Pill Song
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam-Si, Gyeonggi-do 13120, Korea.
| | - Yongil Lee
- Korea Railroad Research Institute (KRRI), 176 Cheoldobakmulkwan-ro, Uiwang-si, Gyeonggi-do 16105, Korea.
- Department of Mechanical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Korea.
| | - Vu Khac Hoang Bui
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam-Si, Gyeonggi-do 13120, Korea.
| | - You-Kwon Oh
- School of Chemical and Biomolecular Engineering, Pusan National University, Busan 46241, Korea.
| | - Hyun Gyu Park
- Department of Chemical and Biomolecular Engineering (BK21+ Program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Moon Il Kim
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam-Si, Gyeonggi-do 13120, Korea.
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam-Si, Gyeonggi-do 13120, Korea.
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Seo JY, Jeon HJ, Kim JW, Lee J, Oh YK, Ahn CW, Lee JW. Simulated-Sunlight-Driven Cell Lysis of Magnetophoretically Separated Microalgae Using ZnFe2O4 Octahedrons. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04445] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jung Yoon Seo
- Global
Nanotechnology Development Team, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea
- Climate
Technology Strategy Center, Korea Institute of Energy Research (KIER), Daejeon, 34129, Republic of Korea
| | - Hwan-Jin Jeon
- Department
of Chemical Engineering and Biotechnology, Korea Polytechnic University (KPU), Siheung-si, Gyeonggi-do 15073, Republic of Korea
| | - Jeong Won Kim
- Global
Nanotechnology Development Team, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea
| | - Jiye Lee
- School
of Chemical and Biomolecular Engineering, Pusan National University (PNU), Busan 46241, Republic of Korea
| | - You-Kwan Oh
- School
of Chemical and Biomolecular Engineering, Pusan National University (PNU), Busan 46241, Republic of Korea
| | - Chi Won Ahn
- Global
Nanotechnology Development Team, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea
| | - Jae W. Lee
- Department
of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
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He M, Yan Y, Pei F, Wu M, Gebreluel T, Zou S, Wang C. Improvement on lipid production by Scenedesmus obliquus triggered by low dose exposure to nanoparticles. Sci Rep 2017; 7:15526. [PMID: 29138451 PMCID: PMC5686080 DOI: 10.1038/s41598-017-15667-0] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 10/26/2017] [Indexed: 11/09/2022] Open
Abstract
Carbon nanotubes (CNTs), α-Fe2O3 nanoparticles (nano Fe2O3) and MgO nanoparticles (nano MgO) were evaluated for the effects on algae growth and lipid production. Nano Fe2O3 promoted cell growth in the range of 0-20 mg·L-1. CNTs, nano Fe2O3 and nano MgO inhibited cell growth of Scenedesmus obliquus at 10, 40 and 0.8 mg·L-1 respectively. Neutral lipid and total lipid content increased with the increasing concentration of all tested nanoparticles. The maximum lipid productivity of cultures exposed to CNTs, nano Fe2O3 and nano MgO was observed at 5 mg·L-1, 5 mg·L-1 and 40 mg·L-1, with the improvement by 8.9%, 39.6% and 18.5%. High dose exposure to nanoparticles limited increase in lipid productivity, possibly due to the repression on cell growth caused by nanoparticles-catalyzed reactive oxygen species (ROS) generation, finally leading to reduction in biomass and lipid production. Reduced accumulation of fatty acids of C18:3n3, C18:3n6 and C20:2 was observed in cells exposed to nanoparticles.
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Affiliation(s)
- Meilin He
- Jiangsu Key Laboratory of Marine Biology, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yongquan Yan
- Jiangsu Key Laboratory of Marine Biology, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Pei
- Jiangsu Key Laboratory of Marine Biology, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mingzhu Wu
- Jiangsu Key Laboratory of Marine Biology, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Temesgen Gebreluel
- Jiangsu Key Laboratory of Marine Biology, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shanmei Zou
- Jiangsu Key Laboratory of Marine Biology, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Changhai Wang
- Jiangsu Key Laboratory of Marine Biology, College of Resources and Environmental Science, Nanjing Agricultural University, Nanjing, 210095, China.
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Seo JY, Kim MG, Lee K, Lee YC, Na JG, Jeon SG, Park SB, Oh YK. Multifunctional Nanoparticle Applications to Microalgal Biorefinery. NANOTECHNOLOGY FOR BIOENERGY AND BIOFUEL PRODUCTION 2017. [DOI: 10.1007/978-3-319-45459-7_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Nam B, Lee HU, Park SY, Son BC, Lee GW, Park JY, Lee YC. Dual-end-functionalized tin (Sn)-phyllosilicates for the esterification of oleic acid. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ji HM, Lee HU, Kim EJ, Seo S, Kim B, Lee GW, Oh YK, Kim JY, Huh YS, Song HA, Lee YC. Efficient harvesting of wet blue-green microalgal biomass by two-aminoclay [AC]-mixture systems. BIORESOURCE TECHNOLOGY 2016; 211:313-318. [PMID: 27023387 DOI: 10.1016/j.biortech.2016.03.111] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 03/16/2016] [Accepted: 03/19/2016] [Indexed: 06/05/2023]
Abstract
Blue-green microalgal blooms have been caused concerns about environmental problems and human-health dangers. For removal of such cyanobacteria, many mechanical and chemical treatments have been trialled. Among various technologies, the flocculation-based harvesting (precipitation) method can be an alternative if the problem of the low yield of recovered biomass at low concentrations of cyanobacteria is solved. In the present study, it was utilized mixtures of magnesium aminoclay [MgAC] and cerium aminoclay [CeAC] with different particle sizes to harvest cyanobacteria feedstocks with ∼100% efficiency within 1h by ten-fold lower loading of ACs compared with single treatments of [MgAC] or [CeAC]. This success was owed to the compact networks of the different-sized-ACs mixture for efficient bridging between microalgal cells. In order to determine the usage potential of biomass harvested with AC, the mass was heat treated under the reduction condition. This system is expected to be profitably utilizable in adsorbents and catalysts.
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Affiliation(s)
- Hye-Min Ji
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Hyun Uk Lee
- Advanced Nano-surface Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Eui Jin Kim
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Soonjoo Seo
- Advanced Nano-surface Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Bohwa Kim
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 305-343, Republic of Korea
| | - Go-Woon Lee
- Quality Management Team, Korea Institute of Energy Research (KIER), 152 Gajeongro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - You-Kwan Oh
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 305-343, Republic of Korea
| | - Jun Yeong Kim
- Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Yun Suk Huh
- Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Hyun A Song
- Research Analysis Center, Education Support Building W8 KAIST Science Road Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea.
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Farooq W, Lee HU, Huh YS, Lee YC. Chlorella vulgaris cultivation with an additive of magnesium-aminoclay. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Kim DY, Vijayan D, Praveenkumar R, Han JI, Lee K, Park JY, Chang WS, Lee JS, Oh YK. Cell-wall disruption and lipid/astaxanthin extraction from microalgae: Chlorella and Haematococcus. BIORESOURCE TECHNOLOGY 2016; 199:300-310. [PMID: 26342788 DOI: 10.1016/j.biortech.2015.08.107] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 08/18/2015] [Accepted: 08/19/2015] [Indexed: 06/05/2023]
Abstract
Recently, biofuels and nutraceuticals produced from microalgae have emerged as major interests, resulting in intensive research of the microalgal biorefinery process. In this paper, recent developments in cell-wall disruption and extraction methods are reviewed, focusing on lipid and astaxanthin production from the biotechnologically important microalgae Chlorella and Haematococcus, respectively. As a common, critical bottleneck for recovery of intracellular components such as lipid and astaxanthin from these microalgae, the composition and structure of rigid, thick cell-walls were analyzed. Various chemical, physical, physico-chemical, and biological methods applied for cell-wall breakage and lipid/astaxanthin extraction from Chlorella and Haematococcus are discussed in detail and compared based on efficiency, energy consumption, type and dosage of solvent, biomass concentration and status (wet/dried), toxicity, scalability, and synergistic combinations. This report could serve as a useful guide to the implementation of practical downstream processes for recovery of valuable products from microalgae including Chlorella and Haematococcus.
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Affiliation(s)
- Dong-Yeon Kim
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Durairaj Vijayan
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Ramasamy Praveenkumar
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Jong-In Han
- Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Kyubock Lee
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Ji-Yeon Park
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Won-Seok Chang
- Korea District Heating Corp., Bungdang-dong, Seongnam-si, Gyoenggi-do 463-908, Republic of Korea
| | - Jin-Suk Lee
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - You-Kwan Oh
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
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16
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Kang KS, Lee HU, Kim MI, Park SY, Chang SJ, Park JH, Huh YS, Lee J, Yang M, Lee YC, Park HG. In-vitro cytotoxicity assessment of carbon-nanodot-conjugated Fe-aminoclay (CD-FeAC) and its bio-imaging applications. J Nanobiotechnology 2015; 13:88. [PMID: 26612177 PMCID: PMC4662025 DOI: 10.1186/s12951-015-0151-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 11/18/2015] [Indexed: 11/28/2022] Open
Abstract
We have investigated the cytotoxic assay of Fe-aminoclay (FeAC) nanoparticles (NPs) and simultaneous imaging in HeLa cells by photoluminescent carbon nanodots (CD) conjugation. Non-cytotoxic, photostable, and CD NPs are conjugated with cationic FeAC NPs where CD NPs play a role in bio-imaging and FeAC NPs act as a substrate for CD conjugation and help to uptake of NPs into cancer cells due to positively charged surface of FeAC NPs in physiological media. As increase of CD-FeAC NPs loading in HeLa cell in vitro, it showed slight cytotoxicity at 1000 μg/mL but no cytotoxicity for normal cells up to concentration of 1000 μg/mL confirmed by two 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and neutral red (NR) assays, with further observations by 4',6-diamidino-2-phenylindole (DAPI) stained confocal microscopy images, possessing that CD-FeAC NPs can be used as potential drug delivery platforms in cancer cells with simultaneous imaging. Graphical abstract CD conjugation with organo-building blocks of delaminated FeAC NPs.
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Affiliation(s)
- Kyoung Suk Kang
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, 291 Daehakno, Yuseong-gu, Daejeon, 305-701, Republic of Korea.
| | - Hyun Uk Lee
- Advanced Nano-Surface Research Group, Korea Basic Science Institute (KBSI), Daejeon, 305-333, Republic of Korea.
| | - Moon Il Kim
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 461-701, Republic of Korea.
| | - So Young Park
- Advanced Nano-Surface Research Group, Korea Basic Science Institute (KBSI), Daejeon, 305-333, Republic of Korea.
| | - Sung-Jin Chang
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 156-756, Republic of Korea.
| | - Ji-Ho Park
- Department of Bio and Brain Engineering (BK21+ Program), KAIST, 291 Daehakno, Yuseong-gu, Daejeon, 305-701, Republic of Korea.
| | - Yun Suk Huh
- Department of Biological Engineering, College of Engineering, Inha University, Incheon, 402-751, Republic of Korea.
| | - Jouhahn Lee
- Advanced Nano-Surface Research Group, Korea Basic Science Institute (KBSI), Daejeon, 305-333, Republic of Korea.
| | - Mino Yang
- Division of Analytical Research, Korea Basic Science Institute (KBSI), Gangneung, 200-701, Republic of Korea.
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 461-701, Republic of Korea.
| | - Hyun Gyu Park
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, 291 Daehakno, Yuseong-gu, Daejeon, 305-701, Republic of Korea.
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17
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Lee YC, Lee K, Oh YK. Recent nanoparticle engineering advances in microalgal cultivation and harvesting processes of biodiesel production: a review. BIORESOURCE TECHNOLOGY 2015; 184:63-72. [PMID: 25465786 DOI: 10.1016/j.biortech.2014.10.145] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 10/28/2014] [Accepted: 10/29/2014] [Indexed: 06/04/2023]
Abstract
Among the various steps entailed in the production of biodiesel from microalgae, the efficiency and cost-reduction of the cultivation and harvesting steps remain key obstacles to its practical commercialization. Recently, in order to overcome the technical bottlenecks and limitations with regard to both steps, nanoparticle engineering based on particles' unique physico-chemical and mechanical properties has been extensively applied as a powerful analytical and practical tool. These applications include the enhancement of cell growth and/or pigments by light back-scattering, the induction of intracellular lipid accumulation by nutritional competition and/or stress environment, the improvement of cell separation efficiency and processing time from culture broth, the multiple reuse of magnetic nanoparticle flocculant, and integrated one-pot harvesting/cell-disruption. This review presents and discusses the recent nanoparticle-engineering-based developments in the implementation of practical microalgal cultivation and harvesting processes.
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Affiliation(s)
- Young-Chul Lee
- Department of BioNano Technology, Gachon University, Seongnam-si, Gyeonggi-do 461-701, Republic of Korea
| | - Kyubock Lee
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 305-343, Republic of Korea
| | - You-Kwan Oh
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), Daejeon 305-343, Republic of Korea.
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18
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Park JY, Park MS, Lee YC, Yang JW. Advances in direct transesterification of algal oils from wet biomass. BIORESOURCE TECHNOLOGY 2015; 184:267-275. [PMID: 25466997 DOI: 10.1016/j.biortech.2014.10.089] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 10/17/2014] [Accepted: 10/18/2014] [Indexed: 06/04/2023]
Abstract
An interest in biodiesel as an alternative fuel for diesel engines has been increasing because of the issue of petroleum depletion and environmental concerns related to massive carbon dioxide emissions. Researchers are strongly driven to pursue the next generation of vegetable oil-based biodiesel. Oleaginous microalgae are considered to be a promising alternative oil source. To commercialize microalgal biodiesel, cost reductions in oil extraction and downstream biodiesel conversion are stressed. Herein, starting from an investigation of oil extraction from wet microalgae, a review is conducted of transesterification using enzymes, homogeneous and heterogeneous catalysts, and yield enhancement by ultrasound, microwave, and supercritical process. In particular, there is a focus on direct transesterification as a simple and energy efficient process that omits a separate oil extraction step and utilizes wet microalgal biomass; however, it is still necessary to consider issues such as the purification of microalgal oils and upgrading of biodiesel properties.
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Affiliation(s)
- Ji-Yeon Park
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
| | - Min S Park
- Advanced Biomass R&D Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam-si, Gyeonggi-do 461-701, Republic of Korea
| | - Ji-Won Yang
- Advanced Biomass R&D Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
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19
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Stable semiconductor black phosphorus (BP)@titanium dioxide (TiO2) hybrid photocatalysts. Sci Rep 2015; 5:8691. [PMID: 25732720 PMCID: PMC4346807 DOI: 10.1038/srep08691] [Citation(s) in RCA: 202] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 02/02/2015] [Indexed: 12/17/2022] Open
Abstract
Over the past few decades, two-dimensional (2D) and layered materials have emerged as new fields. Due to the zero-band-gap nature of graphene and the low photocatalytic performance of MoS2, more advanced semiconducting 2D materials have been prompted. As a result, semiconductor black phosphorus (BP) is a derived cutting-edge post-graphene contender for nanoelectrical application, because of its direct-band-gap nature. For the first time, we report on robust BP@TiO2 hybrid photocatalysts offering enhanced photocatalytic performance under light irradiation in environmental and biomedical fields, with negligible affected on temperature and pH conditions, as compared with MoS2@TiO2 prepared by the identical synthesis method. Remarkably, in contrast to pure few layered BP, which, due to its intrinsic sensitivity to oxygen and humidity was readily dissolved after just several uses, the BP@TiO2 hybrid photocatalysts showed a ~92% photocatalytic activity after 15 runs. Thus, metal-oxide-stabilized BP photocatalysts can be practically applied as a promising alternative to graphene and MoS2.
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20
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Hong JW, Jo SW, Yoon HS. Research and development for algae-based technologies in Korea: a review of algae biofuel production. PHOTOSYNTHESIS RESEARCH 2015; 123:297-303. [PMID: 24496987 DOI: 10.1007/s11120-014-9974-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 01/13/2014] [Indexed: 06/03/2023]
Abstract
This review covers recent research and development (R&D) activities in the field of algae-based biofuels in Korea. As South Korea's energy policy paradigm has focused on the development of green energies, the government has funded several algae biofuel R&D consortia and pilot projects. Three major programs have been launched since 2009, and significant efforts are now being made to ensure a sustainable supply of algae-based biofuels. If these R&D projects are executed as planned for the next 10 years, they will enable us to overcome many technical barriers in algae biofuel technologies and help Korea to become one of the leading countries in green energy by 2020.
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Affiliation(s)
- Ji Won Hong
- Department of Biology, Kyungpook National University, Daegu, 702-701, South Korea
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21
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Innovative three-dimensional (3D) eco-TiO₂ photocatalysts for practical environmental and bio-medical applications. Sci Rep 2014; 4:6740. [PMID: 25338845 PMCID: PMC4206844 DOI: 10.1038/srep06740] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 10/06/2014] [Indexed: 01/29/2023] Open
Abstract
It is known that water purified by conventional TiO2 photocatalysts may not be safe enough for drinking, due to the toxicity by tiny existence of TiO2 nanoparticles after water treatment. We herein demonstrate a facile design of a three-dimensional (3D) TiO2 photocatalyst structure with which both the efficiency of purification and the safety level of the final purified water can be improved and ensured, respectively. The structure, consisting of 3D sulfur-doped TiO2 microtubes in nanotubes (eco-TiO2), is suitable for both environmental and bio-medical applications. Investigation of its formation mechanism reveals that anodic aluminum oxide (AAO), owing to a spatial constraint, causes a simple, nanoparticles-to-nanotubes structural rearrangement as a template for nanotube growth. It is found that eco-TiO2 can be activated under visible-light irradiation by non-metal (sulfur; S) doping, after which it shows visible-light photocatalytic activities over a range of solar energy. Importantly, an in vitro cytotoxicity test of well-purified water by eco-TiO2 confirms that eco-TiO2 satisfies the key human safety conditions.
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22
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Kim DY, Park JY, Choi SA, Oh YK, Lee IG, Seo YW, Han JI. The effects of microalgal cell disruption via FeCl3-based synergistic effect between Fenton-like and Lewis acid reaction for lipid extraction. ALGAL RES 2014. [DOI: 10.1016/j.algal.2014.08.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Wang H, Jiang H, Wang S, Shi W, He J, Liu H, Huang Y. Fe3O4–MWCNT magnetic nanocomposites as efficient peroxidase mimic catalysts in a Fenton-like reaction for water purification without pH limitation. RSC Adv 2014. [DOI: 10.1039/c4ra07327d] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Park JY, Nam B, Choi SA, Oh YK, Lee JS. Effects of anionic surfactant on extraction of free fatty acid from Chlorella vulgaris. BIORESOURCE TECHNOLOGY 2014; 166:620-4. [PMID: 24929300 DOI: 10.1016/j.biortech.2014.05.098] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 05/21/2014] [Accepted: 05/24/2014] [Indexed: 05/21/2023]
Abstract
Microalgal lipid with a high free fatty acid (FFA) content was directly extracted from Chlorella vulgaris, using SDBS, in an acid-catalyzed hot-water extraction process. The total fatty acid content of C. vulgaris was 296.0 mg/g cell. Under the 1.0% sulfuric acid, 0.4% SDBS conditions, the FFA content of the lipid increased to 96.7%, and the lipid-extraction yield was 248.4 mg/g cell. Under the 2.0% sulfuric acid, 0.2% SDBS conditions, the FFA content of the lipid was 96.1%, and the lipid-extraction yield was 266.0mg/g cell. Whereas the FAME content of the microalgal lipid extracted by hexane-methanol was 76.4% at the 10.0% sulfuric acid concentration, the FAME content of the high-FFA microalgal lipid was increased to 70.1% at a sulfuric acid concentration of only 0.1%. By combined sulfuric acid/SDBS treatment, high-FFA microalgal lipid was extracted in large yields; moreover, the amount of catalyst was remarkably reduced in the esterification of FFA.
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Affiliation(s)
- Ji-Yeon Park
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea.
| | - Bora Nam
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - Sun-A Choi
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - You-Kwan Oh
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - Jin-Suk Lee
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
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25
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Kim S, Lee YC, Cho DH, Lee HU, Huh YS, Kim GJ, Kim HS. A simple and non-invasive method for nuclear transformation of intact-walled Chlamydomonas reinhardtii. PLoS One 2014; 9:e101018. [PMID: 24988123 PMCID: PMC4079685 DOI: 10.1371/journal.pone.0101018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 06/02/2014] [Indexed: 12/04/2022] Open
Abstract
Genetic engineering in microalgae is gaining attraction but nuclear transformation methods available so far are either inefficient or require special equipment. In this study, we employ positively charged nanoparticles, 3-aminopropyl-functionalized magnesium phyllosilicate (aminoclay, approximate unit cell composition of [H2N(CH2)3]8Si8Mg6O12(OH)4), for nuclear transformation into eukaryotic microalgae. TEM and EDX analysis of the process of transformation reveals that aminoclay coats negatively-charged DNA biomolecules and forms a self-assembled hybrid nanostructure. Subsequently, when this nanostructure is mixed with microalgal cells and plated onto selective agar plates with high friction force, cell wall is disrupted facilitating delivery of plasmid DNA into the cell and ultimately to the nucleus. This method is not only simple, inexpensive, and non-toxic to cells but also provides efficient transformation (5.03×102 transformants/µg DNA), second only to electroporation which needs advanced instrumentation. We present optimized parameters for efficient transformation including pre-treatment, friction force, concentration of foreign DNA/aminoclay, and plasticity of agar plates. It is also confirmed the successful integration and stable expression of foreign gene in Chlamydomonas reinhardtii through molecular methods.
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Affiliation(s)
- Sora Kim
- University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, Seongnam-si, Republic of Korea
- * E-mail: (YCL); (HSK)
| | - Dae-Hyun Cho
- Environmental Biotechnology Research Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon, Republic of Korea
| | - Hyun Uk Lee
- Division of Materials Science, Korea Basic Science Institute, Daejeon, Republic of Korea
| | - Yun Suk Huh
- Department of Biological Engineering, College of Engineering, Inha University, Incheon, Republic of Korea
| | - Geun-Joong Kim
- Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwang-ju, Republic of Korea
| | - Hee-Sik Kim
- University of Science and Technology (UST), Daejeon, Republic of Korea
- Environmental Biotechnology Research Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon, Republic of Korea
- * E-mail: (YCL); (HSK)
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Park JY, Choi SA, Jeong MJ, Nam B, Oh YK, Lee JS. Changes in fatty acid composition of Chlorella vulgaris by hypochlorous acid. BIORESOURCE TECHNOLOGY 2014; 162:379-83. [PMID: 24785789 DOI: 10.1016/j.biortech.2014.03.159] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 03/21/2014] [Accepted: 03/28/2014] [Indexed: 05/09/2023]
Abstract
Hypochlorous acid treatment of a microalga, Chlorella vulgaris, was investigated to improve the quality of microalgal lipid and to obtain high biodiesel-conversion yield. Because chlorophyll deactivates the catalyst for biodiesel conversion, its removal in the lipid-extraction step enhances biodiesel productivity. When microalgae contacted the hypochlorous acid, chlorophyll was removed, and resultant changes in fatty acid composition of microalgal lipid were observed. The lipid-extraction yield after activated clay treatment was 32.7 mg lipid/g cell; after NaClO treatment at 0.8% available chlorine concentration, it was 95.2 mg lipid/g cell; and after NaCl electrolysis treatment at the 1 g/L cell concentration, it was 102.4 mg lipid/g cell. While the contents of all of the unsaturated fatty acids except oleic acid, in the microalgal lipid, decreased as the result of NaClO treatment, the contents of all of the unsaturated fatty acids including oleic acid decreased as the result of NaCl electrolysis treatment.
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Affiliation(s)
- Ji-Yeon Park
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea.
| | - Sun-A Choi
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - Min-Ji Jeong
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - Bora Nam
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - You-Kwan Oh
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - Jin-Suk Lee
- Biomass and Waste Energy Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
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27
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Park JY, Lee GA, Kim KY, Kim KY, Choi SA, Jeong MJ, Oh YK. Microalgal Oil Recovery by Solvent Extraction from Nannochloropsis oceanica. KOREAN CHEMICAL ENGINEERING RESEARCH 2014. [DOI: 10.9713/kcer.2014.52.1.88] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Lee YC, Oh SY, Lee HU, Kim B, Lee SY, Choi MH, Lee GW, Park JY, Oh YK, Ryu T, Han YK, Chung KS, Huh YS. Aminoclay-induced humic acid flocculation for efficient harvesting of oleaginous Chlorella sp. BIORESOURCE TECHNOLOGY 2014; 153:365-369. [PMID: 24388691 DOI: 10.1016/j.biortech.2013.11.103] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 11/25/2013] [Accepted: 11/30/2013] [Indexed: 06/03/2023]
Abstract
Biofuels (biodiesel) production from oleaginous microalgae has been intensively studied for its practical applications within the microalgae-based biorefinement process. For scaled-up cultivation of microalgae in open ponds or, for further cost reduction, using wastewater, humic acids present in water-treatment systems can positively and significantly affect the harvesting of microalgae biomass. Flocculation, because of its simplicity and inexpensiveness, is considered to be an efficient approach to microalgae harvesting. Based on the reported cationic aminoclay usages for a broad spectrum of microalgae species in wide-pH regimes, aminoclay-induced humic acid flocculation at the 5g/L aminoclay loading showed fast floc formation, approximately 100% harvesting efficiency, which was comparable to the only-aminoclay treatment at 5g/L, indicating that the humic acid did not significantly inhibit the microalgae harvesting behavior. As for the microalgae flocculation mechanism, it is suggested that cationic nanoparticles decorated on macromolecular matters function as a type of network in capturing microalgae.
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Affiliation(s)
- Young-Chul Lee
- Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Seo Yeong Oh
- Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Hyun Uk Lee
- Division of Materials Science, Korea Basic Science Institute (KBSI), Daejeon 305-333, Republic of Korea
| | - Bohwa Kim
- Clean Fuel Department, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - So Yeun Lee
- Clean Fuel Department, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Moon-Hee Choi
- Department of Beauty and Cosmetology, Graduate School of Industry, Chosun University, Gwangju 501-759, Republic of Korea
| | - Go-Woon Lee
- Testing and Certification Center, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Ji-Yeon Park
- Clean Fuel Department, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - You-Kwan Oh
- Clean Fuel Department, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Taegong Ryu
- Rare Metals Research Center, Korea Institute of Geoscience & Mineral Resources, Daejeon 305-350, Republic of Korea
| | - Young-Kyu Han
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 100-715, Republic of Korea
| | - Kang-Sup Chung
- Rare Metals Research Center, Korea Institute of Geoscience & Mineral Resources, Daejeon 305-350, Republic of Korea.
| | - Yun Suk Huh
- Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Republic of Korea.
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29
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Zhang X, Xu B, Hong C, Han J, Qin F, Han W, Cheng H, Liu C, He R. Carbon-bonded carbon fiber composites containing uniformly distributed silicon carbide. RSC Adv 2014. [DOI: 10.1039/c3ra44913k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Lee YC, Lee K, Hwang Y, Andersen HR, Kim B, Lee SY, Choi MH, Park JY, Han YK, Oh YK, Huh YS. Aminoclay-templated nanoscale zero-valent iron (nZVI) synthesis for efficient harvesting of oleaginous microalga, Chlorella sp. KR-1. RSC Adv 2014. [DOI: 10.1039/c3ra46602g] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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