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Jo SY, Lim SH, Lee JY, Son J, Choi JI, Park SJ. Microbial production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate), from lab to the shelf: A review. Int J Biol Macromol 2024; 274:133157. [PMID: 38901504 DOI: 10.1016/j.ijbiomac.2024.133157] [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: 02/09/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 06/22/2024]
Abstract
Polyhydroxyalkanoates (PHAs) are natural biopolyesters produced by microorganisms that represent one of the most promising candidates for the replacement of conventional plastics due to their complete biodegradability and advantageous material properties which can be modulated by varying their monomer composition. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(3HB-co-3HV)] has received particular research attention because it can be synthesized based on the same microbial platform developed for poly(3-hydroxybutyrate) [P(3HB)] without much modification, with as high productivity as P(3HB). It also offers more useful mechanical and thermal properties than P(3HB), which broaden its application as a biocompatible and biodegradable polyester. However, a significant commercial disadvantage of P(3HB-co-3HV) is its rather high production cost, thus many studies have investigated the economical synthesis of P(3HB-co-3HV) from structurally related and unrelated carbon sources in both wild-type and recombinant microbial strains. A large number of metabolic engineering strategies have also been proposed to tune the monomer composition of P(3HB-co-3HV) and thus its material properties. In this review, recent metabolic engineering strategies designed for enhanced production of P(3HB-co-3HV) are discussed, along with their current status, limitations, and future perspectives.
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Affiliation(s)
- Seo Young Jo
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Seo Hyun Lim
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Ji Yeon Lee
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jina Son
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jong-Il Choi
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju 61186, Republic of Korea.
| | - Si Jae Park
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea.
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Longo A, Fanelli F, Villano M, Montemurro M, Rizzello CG. Bioplastic Production from Agri-Food Waste through the Use of Haloferax mediterranei: A Comprehensive Initial Overview. Microorganisms 2024; 12:1038. [PMID: 38930420 PMCID: PMC11205408 DOI: 10.3390/microorganisms12061038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/06/2024] [Accepted: 05/16/2024] [Indexed: 06/28/2024] Open
Abstract
The research on bioplastics (both biobased and biodegradable) is steadily growing and discovering environmentally friendly substitutes for conventional plastic. This review highlights the significance of bioplastics, analyzing, for the first time, the state of the art concerning the use of agri-food waste as an alternative substrate for biopolymer generation using Haloferax mediterranei. H. mediterranei is a highly researched strain able to produce polyhydroxybutyrate (PHB) since it can grow and produce bioplastic in high-salinity environments without requiring sterilization. Extensive research has been conducted on the genes and pathways responsible for PHB production using H. mediterranei to find out how fermentation parameters can be regulated to enhance cell growth and increase PHB accumulation. This review focuses on the current advancements in utilizing food waste as a substitute for costly substrates to reduce feedstock expenses. Specifically, it examines the production of biomass and the recovery of PHB from agri-food waste. Furthermore, it emphasizes the characterization of PHB and the significance of hydroxyvalerate (HV) abundance in the formation of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) copolymer. The downstream processing options are described, and the crucial factors associated with industrial scale-up are assessed, including substrates, bioreactors, process parameters, and bioplastic extraction and purification. Additionally, the economic implications of various options are discussed.
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Affiliation(s)
- Angela Longo
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy; (A.L.); (C.G.R.)
| | - Francesca Fanelli
- Institute of Sciences of Food Production (CNR-ISPA), National Research Council of Italy, 70126 Bari, Italy;
| | - Marianna Villano
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy;
- Research Center for Applied Sciences to the Safeguard of Environment and Cultural Heritage (CIABC), Sapienza University of Rome, 00185 Rome, Italy
| | - Marco Montemurro
- Institute of Sciences of Food Production (CNR-ISPA), National Research Council of Italy, 70126 Bari, Italy;
| | - Carlo Giuseppe Rizzello
- Department of Environmental Biology, Sapienza University of Rome, 00185 Rome, Italy; (A.L.); (C.G.R.)
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Chen J, Cui Y, Zhang S, Wu B, Han J, Xiang H. Unveiling the repressive mechanism of a PPS-like regulator (PspR) in polyhydroxyalkanoates biosynthesis network. Appl Microbiol Biotechnol 2024; 108:265. [PMID: 38498113 PMCID: PMC10948481 DOI: 10.1007/s00253-024-13100-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/23/2024] [Accepted: 02/28/2024] [Indexed: 03/20/2024]
Abstract
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a type of polyhydroxyalkanoates (PHA) that exhibits numerous outstanding properties and is naturally synthesized and elaborately regulated in various microorganisms. However, the regulatory mechanism involving the specific regulator PhaR in Haloferax mediterranei, a major PHBV production model among Haloarchaea, is not well understood. In our previous study, we showed that deletion of the phosphoenolpyruvate (PEP) synthetase-like (pps-like) gene activates the cryptic phaC genes in H. mediterranei, resulting in enhanced PHBV accumulation. In this study, we demonstrated the specific function of the PPS-like protein as a negative regulator of phaR gene expression and PHBV synthesis. Chromatin immunoprecipitation (ChIP), in situ fluorescence reporting system, and in vitro electrophoretic mobility shift assay (EMSA) showed that the PPS-like protein can bind to the promoter region of phaRP. Computational modeling revealed a high structural similarity between the rifampin phosphotransferase (RPH) protein and the PPS-like protein, which has a conserved ATP-binding domain, a His domain, and a predicted DNA-binding domain. Key residues within this unique DNA-binding domain were subsequently validated through point mutation and functional evaluations. Based on these findings, we concluded that PPS-like protein, which we now renamed as PspR, has evolved into a repressor capable of regulating the key regulator PhaR, and thereby modulating PHBV synthesis. This regulatory network (PspR-PhaR) for PHA biosynthesis is likely widespread among haloarchaea, providing a novel approach to manipulate haloarchaea as a production platform for high-yielding PHA. KEY POINTS: • The repressive mechanism of a novel inhibitor PspR in the PHBV biosynthesis was demonstrated • PspR is widespread among the PHA accumulating haloarchaea • It is the first report of functional conversion from an enzyme to a trans-acting regulator in haloarchaea.
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Affiliation(s)
- Junyu Chen
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Yinglu Cui
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
- College of Life Science, University of Chinese Academy of Sciences, 100049, Beijing, People's Republic of China
| | - Shengjie Zhang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
| | - Bian Wu
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
- College of Life Science, University of Chinese Academy of Sciences, 100049, Beijing, People's Republic of China
| | - Jing Han
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China.
- College of Life Science, University of Chinese Academy of Sciences, 100049, Beijing, People's Republic of China.
| | - Hua Xiang
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China.
- College of Life Science, University of Chinese Academy of Sciences, 100049, Beijing, People's Republic of China.
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Bacha S, Arous F, Chouikh E, Jaouani A, Gtari M, Charradi K, Attia H, Ghorbel D. Exploring Bacillus amyloliquefaciens strain OM81 for the production of polyhydroxyalkanoate (PHA) bioplastic using olive mill wastewater. 3 Biotech 2023; 13:415. [PMID: 38009166 PMCID: PMC10667205 DOI: 10.1007/s13205-023-03808-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 10/10/2023] [Indexed: 11/28/2023] Open
Abstract
In this study, bacterial strains isolated from olive oil mill wastewater assigned to Bacillus (n = 4) and Klebsiella (n = 1) genera, were evaluated for their ability to accumulate intracellular PHA granules using Sudan Black staining. A maximum PHA production of 0.14 g/L (i.e., 30.2% wt./wt. in dry biomass) was observed in Bacillus amyloliquefaciens strain OM81 after 72 h of incubation in the presence of 2% glucose (synthetic medium). To reduce bioplastic production costs and recover a polluting product, olive mill wastewater was tested as a carbon source. In this context, the maximum growth (1.45 g/L) was observed in the presence of 50% olive mill wastewater. After extracting the biopolymers with chloroform, quantitative and qualitative analyses were conducted using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). FTIR showed an absorption band at 1730 cm-1 assigned to the elongation of the PHB carbonyl groups. This approach offers a dual benefit of reducing pollution and bioplastic production costs. The Bacillus amyloliquefaciens strain OM81 showed promising results for PHAs production, making it a potential candidate for further investigation. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03808-4.
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Affiliation(s)
- Samar Bacha
- University of Carthage, INSAT, Centre Urbain Nord, B.P. 676, 1080 Tunis, Tunisia
| | - Fatma Arous
- LR22ES04 Bioresources, Environment and Biotechnologies (BeB), University of Tunis El Manar, Higher Institute of Applied Biological Sciences of Tunis, 1006 Tunis, Tunisia
| | - Emna Chouikh
- University of Carthage, INSAT, Centre Urbain Nord, B.P. 676, 1080 Tunis, Tunisia
| | - Atef Jaouani
- LR22ES04 Bioresources, Environment and Biotechnologies (BeB), University of Tunis El Manar, Higher Institute of Applied Biological Sciences of Tunis, 1006 Tunis, Tunisia
| | - Maher Gtari
- University of Carthage, INSAT, Centre Urbain Nord, B.P. 676, 1080 Tunis, Tunisia
- USCR Bactériologie Moléculaire & Génomique, INSAT, Centre Urbain Nord, B.P. 676, 1080 Tunis, Tunisia
- Food Analysis, Valorization, and Safety Laboratory, LAVASA, LR11ES45, BPW, University of Sfax, ENIS, 3038 Sfax, Tunisia
| | - Khaled Charradi
- Nanomaterials and Systems for Renewable Energy Laboratory, Research and Technology Center of Energy, Technopark Borj Cedria, BP 095, Hammam-Lif, Tunisia
| | - Hamadi Attia
- Food Analysis, Valorization, and Safety Laboratory, LAVASA, LR11ES45, BPW, University of Sfax, ENIS, 3038 Sfax, Tunisia
| | - Dorra Ghorbel
- University of Carthage, INSAT, Centre Urbain Nord, B.P. 676, 1080 Tunis, Tunisia
- Food Analysis, Valorization, and Safety Laboratory, LAVASA, LR11ES45, BPW, University of Sfax, ENIS, 3038 Sfax, Tunisia
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Khamplod T, Wongsirichot P, Winterburn J. Production of polyhydroxyalkanoates from hydrolysed rapeseed meal by Haloferax mediterranei. BIORESOURCE TECHNOLOGY 2023; 386:129541. [PMID: 37499923 DOI: 10.1016/j.biortech.2023.129541] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
Rapeseed meal (RSM) hydrolysate is a potential low-cost feedstock for the production of polyhydroxyalkanoates (PHAs) by the archaea, Haloferax mediterranei. Acidic and enzymatic hydrolysis were carried out to compare effectiveness. Enzymatic hydrolysis is more effective than acidic hydrolysis for fermentation substrate leading to increased PHA productivity. H. mediterranei didn't grow or produce PHA when acid hydrolysed RSM medium was present in proportions greater than 25% (vol.), potentially due to the effect of inhibitors such as furfural, hydroxymethylfurfural (HMF), etc. However, H. mediterranei was able to grow and produce PHA when using enzymatically hydrolysed RSM medium. The maximum PHA concentration of 0.512 g/L was found at 75% (vol.) in enzymatic RSM hydrolysate medium. The biopolymer obtained had improved thermal and mechanical properties compared to PHB homopolymer. RSM's potential as a low-cost alternative feedstock for improved PHA production under non-sterile conditions was successfully demonstrated, and its usage should be further explored.
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Affiliation(s)
- Thammarit Khamplod
- Department of Chemical Engineering, School of Engineering, Faculty of Science and Engineering, Engineering Building A, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
| | - Phavit Wongsirichot
- Department of Chemical Engineering, School of Engineering, Faculty of Science and Engineering, Engineering Building A, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
| | - James Winterburn
- Department of Chemical Engineering, School of Engineering, Faculty of Science and Engineering, Engineering Building A, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
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Parroquin-Gonzalez M, Winterburn J. Continuous bioreactor production of polyhydroxyalkanoates in Haloferax mediterranei. Front Bioeng Biotechnol 2023; 11:1220271. [PMID: 37781542 PMCID: PMC10534070 DOI: 10.3389/fbioe.2023.1220271] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/21/2023] [Indexed: 10/03/2023] Open
Abstract
In this work, the viability of continuous poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) production with controlled composition in Haloferax mediterranei when fed volatile fatty acids is demonstrated. Continuous fermentations showed to greatly outperform batch fermentations with continuous feeding. Operating the bioreactor continuously allowed for PHBV productivity normalised by cell density to increase from 0.29 to 0.38 mg L-1 h-1, in previous continuously fed-fed batch fermentations, to 0.87 and 1.43 mg L-1 h-1 in a continuous mode of operation for 0.1 and 0.25 M carbon concentrations in the media respectively. Continuous bioreactor experiments were carried out for 100 h, maintaining control over the copolymer composition at around 30 mol% 3-hydroxyvalerate 3HV. This work presents the first continuous production of PHBV in Haloferax mediterranei which continuously delivers polymer at a higher productivity, compared to fed-batch modes of operation. Operating bioreactors continuously whilst maintaining control over copolymer composition brings new processing opportunities for increasing biopolymer production capacity, a crucial step towards the wider industrialisation of polyhydroxyalkanoates (PHAs).
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Affiliation(s)
| | - James Winterburn
- Department of Chemical Engineering University of Manchester, Manchester, United Kingdom
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Goswami L, Kushwaha A, Napathorn SC, Kim BS. Valorization of organic wastes using bioreactors for polyhydroxyalkanoate production: Recent advancement, sustainable approaches, challenges, and future perspectives. Int J Biol Macromol 2023; 247:125743. [PMID: 37423435 DOI: 10.1016/j.ijbiomac.2023.125743] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 06/23/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
Microbial polyhydroxyalkanoates (PHA) are encouraging biodegradable polymers, which may ease the environmental problems caused by petroleum-derived plastics. However, there is a growing waste removal problem and the high price of pure feedstocks for PHA biosynthesis. This has directed to the forthcoming requirement to upgrade waste streams from various industries as feedstocks for PHA production. This review covers the state-of-the-art progress in utilizing low-cost carbon substrates, effective upstream and downstream processes, and waste stream recycling to sustain entire process circularity. This review also enlightens the use of various batch, fed-batch, continuous, and semi-continuous bioreactor systems with flexible results to enhance the productivity and simultaneously cost reduction. The life-cycle and techno-economic analyses, advanced tools and strategies for microbial PHA biosynthesis, and numerous factors affecting PHA commercialization were also covered. The review includes the ongoing and upcoming strategies viz. metabolic engineering, synthetic biology, morphology engineering, and automation to expand PHA diversity, diminish production costs, and improve PHA production with an objective of "zero-waste" and "circular bioeconomy" for a sustainable future.
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Affiliation(s)
- Lalit Goswami
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Anamika Kushwaha
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | | | - Beom Soo Kim
- Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
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Kant Bhatia S, Hyeon Hwang J, Jin Oh S, Jin Kim H, Shin N, Choi TR, Kim HJ, Jeon JM, Yoon JJ, Yang YH. Macroalgae as a source of sugar and detoxifier biochar for polyhydroxyalkanoates production by Halomonas sp. YLGW01 under the unsterile condition. BIORESOURCE TECHNOLOGY 2023:129290. [PMID: 37290712 DOI: 10.1016/j.biortech.2023.129290] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 06/10/2023]
Abstract
Macroalgae (seaweed) is considered a favorable feedstock for polyhydroxyalkanoates (PHAs) production owing to its high productivity, low land and freshwater requirement, and renewable nature. Among different microbes Halomonas sp. YLGW01 can utilize algal biomass-derived sugars (galactose and glucose) for growth and PHAs production. Biomass-derived byproducts furfural, hydroxymethylfurfural (HMF), and acetate affects Halomonas sp. YLGW01 growth and poly(3-hydroxybutyrate) (PHB) production i.e., furfural > HMF > acetate. Eucheuma spinosum biomass-derived biochar was able to remove 87.9 % of phenolic compounds from its hydrolysate without affecting sugar concentration. Halomonas sp. YLGW01 grows and accumulates a high amount of PHB at 4 % NaCl. The use of detoxified unsterilized media resulted in high biomass (6.32 ± 0.16 g cdm/L) and PHB production (3.88 ± 0.04 g/L) compared to undetoxified media (3.97 ± 0.24 g cdm/L, 2.58 ± 0.1 g/L). The finding suggests that Halomonas sp. YLGW01 has the potential to valorize macroalgal biomass into PHAs and open a new avenue for renewable bioplastic production.
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Affiliation(s)
- Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea; Institute for Ubiquitous Information Technology and Applications, Seoul 05029, South Korea
| | - Jeong Hyeon Hwang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea
| | - Suk Jin Oh
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea
| | - Hyun Jin Kim
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea
| | - Nara Shin
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea
| | - Tae-Rim Choi
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea
| | - Hyun-Joong Kim
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea
| | - Jong-Min Jeon
- Green & Sustainable Materials R&D Department, Korea Institute of Industrial Technology (KITECH), Cheonan-si 31056, South Korea
| | - Jeong-Jun Yoon
- Green & Sustainable Materials R&D Department, Korea Institute of Industrial Technology (KITECH), Cheonan-si 31056, South Korea
| | - Yung-Hun Yang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea; Institute for Ubiquitous Information Technology and Applications, Seoul 05029, South Korea.
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Zhou W, Bergsma S, Colpa DI, Euverink GJW, Krooneman J. Polyhydroxyalkanoates (PHAs) synthesis and degradation by microbes and applications towards a circular economy. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 341:118033. [PMID: 37156023 DOI: 10.1016/j.jenvman.2023.118033] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/15/2023] [Accepted: 04/25/2023] [Indexed: 05/10/2023]
Abstract
Overusing non-degradable plastics causes a series of environmental issues, inferring a switch to biodegradable plastics. Polyhydroxyalkanoates (PHAs) are promising biodegradable plastics that can be produced by many microbes using various substrates from waste feedstock. However, the cost of PHAs production is higher compared to fossil-based plastics, impeding further industrial production and applications. To provide a guideline for reducing costs, the potential cheap waste feedstock for PHAs production have been summarized in this work. Besides, to increase the competitiveness of PHAs in the mainstream plastics economy, the influencing parameters of PHAs production have been discussed. The PHAs degradation has been reviewed related to the type of bacteria, their metabolic pathways/enzymes, and environmental conditions. Finally, the applications of PHAs in different fields have been presented and discussed to induce comprehension on the practical potentials of PHAs.
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Affiliation(s)
- Wen Zhou
- Products and Processes for Biotechnology, Engineering and Technology Institute Groningen, Faculty of Science and Engineering, University of Groningen, Groningen, the Netherlands
| | - Simon Bergsma
- Products and Processes for Biotechnology, Engineering and Technology Institute Groningen, Faculty of Science and Engineering, University of Groningen, Groningen, the Netherlands
| | - Dana Irene Colpa
- Products and Processes for Biotechnology, Engineering and Technology Institute Groningen, Faculty of Science and Engineering, University of Groningen, Groningen, the Netherlands
| | - Gert-Jan Willem Euverink
- Products and Processes for Biotechnology, Engineering and Technology Institute Groningen, Faculty of Science and Engineering, University of Groningen, Groningen, the Netherlands
| | - Janneke Krooneman
- Products and Processes for Biotechnology, Engineering and Technology Institute Groningen, Faculty of Science and Engineering, University of Groningen, Groningen, the Netherlands; Bioconversion and Fermentation Technology, Research Centre Biobased Economy, Hanze University of Applied Sciences, Groningen, the Netherlands.
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Che L, Jin W, Zhou X, Han W, Chen Y, Chen C, Jiang G. Current status and future perspectives on the biological production of polyhydroxyalkanoates. ASIA-PAC J CHEM ENG 2023. [DOI: 10.1002/apj.2899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Lin Che
- School of Environment, Harbin Institute of Technology State Key Laboratory of Urban Water Resource and Environment, 150090 Harbin China
- Shenzhen Engineering Laboratory of Microalgae Bioenergy Harbin Institute of Technology (Shenzhen), 518055 Shenzhen China
| | - Wenbiao Jin
- School of Environment, Harbin Institute of Technology State Key Laboratory of Urban Water Resource and Environment, 150090 Harbin China
- Shenzhen Engineering Laboratory of Microalgae Bioenergy Harbin Institute of Technology (Shenzhen), 518055 Shenzhen China
| | - Xu Zhou
- School of Environment, Harbin Institute of Technology State Key Laboratory of Urban Water Resource and Environment, 150090 Harbin China
- Shenzhen Engineering Laboratory of Microalgae Bioenergy Harbin Institute of Technology (Shenzhen), 518055 Shenzhen China
| | - Wei Han
- School of Environment, Harbin Institute of Technology State Key Laboratory of Urban Water Resource and Environment, 150090 Harbin China
- Shenzhen Engineering Laboratory of Microalgae Bioenergy Harbin Institute of Technology (Shenzhen), 518055 Shenzhen China
| | - Yidi Chen
- School of Environment, Harbin Institute of Technology State Key Laboratory of Urban Water Resource and Environment, 150090 Harbin China
| | - Chuan Chen
- School of Environment, Harbin Institute of Technology State Key Laboratory of Urban Water Resource and Environment, 150090 Harbin China
| | - Guangming Jiang
- School of Civil, Mining and Environmental Engineering University of Wollongong Wollongong NSW 2522 Australia
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11
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Versino F, Ortega F, Monroy Y, Rivero S, López OV, García MA. Sustainable and Bio-Based Food Packaging: A Review on Past and Current Design Innovations. Foods 2023; 12:foods12051057. [PMID: 36900574 PMCID: PMC10000825 DOI: 10.3390/foods12051057] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 02/14/2023] [Accepted: 02/21/2023] [Indexed: 03/06/2023] Open
Abstract
Food loss and waste occur for many reasons, from crop processing to household leftovers. Even though some waste generation is unavoidable, a considerable amount is due to supply chain inefficiencies and damage during transport and handling. Packaging design and materials innovations represent real opportunities to reduce food waste within the supply chain. Besides, changes in people's lifestyles have increased the demand for high-quality, fresh, minimally processed, and ready-to-eat food products with extended shelf-life, that need to meet strict and constantly renewed food safety regulations. In this regard, accurate monitoring of food quality and spoilage is necessary to diminish both health hazards and food waste. Thus, this work provides an overview of the most recent advances in the investigation and development of food packaging materials and design with the aim to improve food chain sustainability. Enhanced barrier and surface properties as well as active materials for food conservation are reviewed. Likewise, the function, importance, current availability, and future trends of intelligent and smart packaging systems are presented, especially considering biobased sensor development by 3D printing technology. In addition, driving factors affecting fully biobased packaging design and materials development and production are discussed, considering byproducts and waste minimization and revalorization, recyclability, biodegradability, and other possible ends-of-life and their impact on product/package system sustainability.
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Affiliation(s)
- Florencia Versino
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CICPBA, 47 y 116, La Plata 1900, Argentina
- Facultad de Ingeniería, Universidad Nacional de La Plata (UNLP), 47 y 115, La Plata 1900, Argentina
- Correspondence:
| | - Florencia Ortega
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CICPBA, 47 y 116, La Plata 1900, Argentina
- Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), 47 y 115, La Plata 1900, Argentina
| | - Yuliana Monroy
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CICPBA, 47 y 116, La Plata 1900, Argentina
| | - Sandra Rivero
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CICPBA, 47 y 116, La Plata 1900, Argentina
- Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), 47 y 115, La Plata 1900, Argentina
| | - Olivia Valeria López
- Planta Piloto de Ingeniería Química (PLAPIQUI), UNS-CONICET, Camino La Carrindanga km.7, Bahía Blanca 8000, Argentina
| | - María Alejandra García
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CICPBA, 47 y 116, La Plata 1900, Argentina
- Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), 47 y 115, La Plata 1900, Argentina
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12
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Thu NTT, Hoang LH, Cuong PK, Viet-Linh N, Nga TTH, Kim DD, Leong YK, Nhi-Cong LT. Evaluation of polyhydroxyalkanoate (PHA) synthesis by Pichia sp. TSLS24 yeast isolated in Vietnam. Sci Rep 2023; 13:3137. [PMID: 36823427 PMCID: PMC9950484 DOI: 10.1038/s41598-023-28220-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 01/16/2023] [Indexed: 02/25/2023] Open
Abstract
Following the rising concern on environmental issues caused by conventional fossil-based plastics and depleting crude oil resources, polyhydroxyalkanoates (PHAs) are of great interest by scientists and biodegradable polymer market due to their outstanding properties which include high biodegradability in various conditions and processing flexibility. Many polyhydroxyalkanoate-synthesizing microorganisms, including normal and halophilic bacteria, as well as algae, have been investigated for their performance in polyhydroxyalkanoate production. However, to the best of our knowledge, there is still limited studies on PHAs-producing marine yeast. In the present study, a halophilic yeast strain isolated from Spratly Island in Vietnam were investigated for its potential in polyhydroxyalkanoate biosynthesis by growing the yeast in Zobell marine agar medium (ZMA) containing Nile red dye. The strain was identified by 26S rDNA analysis as Pichia kudriavzevii TSLS24 and registered at Genbank database under code OL757724. The amount of polyhydroxyalkanoates synthesized was quantified by measuring the intracellular materials (predicted as poly(3-hydroxybutyrate) -PHB) by gravimetric method and subsequently confirmed by Fourier transform infrared (FTIR) spectroscopic and nuclear magnetic resonance (NMR) spectroscopic analyses. Under optimal growth conditions of 35 °C and pH 7 with supplementation of glucose and yeast extract at 20 and 10 gL-1, the isolated strain achieved poly(3-hydroxybutyrate) content and concentration of 43.4% and 1.8 gL-1 after 7 days of cultivation. The poly(3-hydroxybutyrate) produced demonstrated excellent biodegradability with degradation rate of 28% after 28 days of incubation in sea water.
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Affiliation(s)
- Nguyen Thi Tam Thu
- Institute of New Technology, Academy of Military Science and Technology, Hanoi, 10072 Vietnam
| | - Le Huy Hoang
- Institute of New Technology, Academy of Military Science and Technology, Hanoi, 10072 Vietnam
| | - Pham Kien Cuong
- Institute of New Technology, Academy of Military Science and Technology, Hanoi, 10072 Vietnam
| | - Nguyen Viet-Linh
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, CauGiay, Hanoi, 10072, Vietnam. .,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, 10072, Vietnam.
| | - Tran Thi Huyen Nga
- grid.267852.c0000 0004 0637 2083University of Science, Vietnam National University-Hanoi, Hanoi, 11400 Vietnam
| | - Dang Dinh Kim
- grid.267849.60000 0001 2105 6888Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi, 10072 Vietnam
| | - Yoong Kit Leong
- grid.265231.10000 0004 0532 1428Department of Chemical and Materials Engineering, Tunghai University, Taichung, 407224 Taiwan
| | - Le Thi Nhi-Cong
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, CauGiay, Hanoi, 10072, Vietnam. .,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, 10072, Vietnam.
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13
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Ene N, Savoiu VG, Spiridon M, Paraschiv CI, Vamanu E. The General Composition of Polyhydroxyalkanoates and Factors that Influence their Production and Biosynthesis. Curr Pharm Des 2023; 29:3089-3102. [PMID: 38099526 DOI: 10.2174/0113816128263175231102061920] [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: 06/19/2023] [Accepted: 09/26/2023] [Indexed: 01/05/2024]
Abstract
Polyhydroxyalkanoates (PHAs) have been a current research topic for many years. PHAs are biopolymers produced by bacteria under unfavorable growth conditions. They are biomaterials that exhibit a variety of properties, including biocompatibility, biodegradability, and high mechanical strength, making them suitable for future applications. This review aimed to provide general information on PHAs, such as their structure, classification, and parameters that affect the production process. In addition, the most commonly used bacterial strains that produce PHAs are highlighted, and details are provided on the type of carbon source used and how to optimize the parameters for bioprocesses. PHAs present a challenge to researchers because a variety of parameters affect biosynthesis, including the variety of carbon sources, bacterial strains, and culture media. Nevertheless, PHAs represent an opportunity to replace plastics, because they can be produced quickly and at a relatively low cost. With growing environmental concerns and declining oil reserves, polyhydroxyalkanoates are a potential replacement for nonbiodegradable polymers. Therefore, the study of PHA production remains a hot topic, as many substrates can be used as carbon sources. Both researchers and industry are interested in facilitating the production, commercialization, and application of PHAs as potential replacements for nonbiodegradable polymers. The fact that they are biocompatible, environmentally biodegradable, and adaptable makes PHAs one of the most important materials available in the market. They are preferred in various industries, such as agriculture (for bioremediation of oil-polluted sites, minimizing the toxicity of pollutants, and environmental impact) or medicine (as medical devices). The various bioprocess technologies mentioned earlier will be further investigated, such as the carbon source (to obtain a biopolymer with the lowest possible cost, such as glucose, various fatty acids, and especially renewable sources), pretreatment of the substrate (to increase the availability of the carbon source), and supplementation of the growth environment with different substances and minerals). Consequently, the study of PHA production remains a current topic because many substrates can be used as carbon sources. Obtaining PHA from renewable substrates (waste oil, coffee grounds, plant husks, etc.) contributes significantly to reducing PHA costs. Therefore, in this review, pure bacterial cultures (Bacillus megaterium, Ralstonia eutropha, Cupriavidus necator, and Pseudomonas putida) have been investigated for their potential to utilize by-products as cheap feedstocks. The advantage of these bioprocesses is that a significant amount of PHA can be obtained using renewable carbon sources. The main disadvantage is that the chemical structure of the obtained biopolymer cannot be determined in advance, as is the case with bioprocesses using a conventional carbon source. Polyhydroxyalkanoates are materials that can be used in many fields, such as the medical field (skin grafts, implantable medical devices, scaffolds, drug-controlled release devices), agriculture (for polluted water cleaning), cosmetics and food (biodegradable packaging, gentle biosurfactants with suitable skin for cosmetics), and industry (production of biodegradable biopolymers that replace conventional plastic). Nonetheless, PHA biopolymers continue to be researched and improved and play an important role in various industrial sectors. The properties of this material allow its use as a biodegradable material in the cosmetics industry (for packaging), in the production of biodegradable plastics, or in biomedical engineering, as various prostheses or implantable scaffolds.
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Affiliation(s)
- Nicoleta Ene
- Department of Industrial Biotechnology, Faculty of Biotechnology, University of Agronomical Sciences and Veterinary Medicine, Bucharest, Romania
- Department of Pharmacology, National Institute for Chemical Pharmaceutical Research and Development- ICCF, Vitan Avenue 112, Bucharest 031299, Romania
| | - Valeria Gabriela Savoiu
- Department of Biotechnology, National Institute For Chemical Pharmaceutical Research and Development, Bucharest 031299, Romania
| | - Maria Spiridon
- Department of Biotechnology, National Institute For Chemical Pharmaceutical Research and Development, Bucharest 031299, Romania
| | - Catalina Ileana Paraschiv
- Department of Chemistry, National Institute for Chemical Pharmaceutical Research and Development, Bucharest 031299, Romania
| | - Emanuel Vamanu
- Department of Industrial Biotechnology, Faculty of Biotechnology, University of Agronomical Sciences and Veterinary Medicine, Bucharest, Romania
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Alsafadi D, AljaririAlhesan JS, Mansoura A, Oqdeha S. Production of polyhydroxyalkanoate from sesame seed wastewater by sequencing batch reactor cultivation process of Haloferax Mediterranei. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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15
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Enhancing Dark Fermentative Hydrogen Production from Problematic Substrates via the Co-Fermentation Strategy. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8120706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The aim of the present paper is the improvement of dark fermentative hydrogen production from problematic substrates. In detail, the study is aimed at (i) investigating the inhibiting effect of two problematic biomasses (i.e., of olive mill wastewater, containing recalcitrant/toxic compounds and cheese whey, lacking pH buffering capacity) on the dark fermentation process, (ii) as well as verifying the possibility to apply a co-fermentation strategy to enhance the process. To investigate the inhibiting effect of the substrates, two experimental sets were conducted using olive mill wastewater and cheese whey alone, under different food-to-microorganism ratios (i.e., 1, 2.5, and 5). Further experiments were conducted to verify the possibility of improving hydrogen production via the co-fermentation strategy. Such experiments included two tests conducted using different volumetric percentages of olive mill wastewater and cheese whey (90% olive mill wastewater + 10% cheese whey and 80% olive mill wastewater + 20% cheese whey). Results show that using olive mill wastewater alone, the inhibiting effect increased at a higher food-to-microorganism ratio. Moreover, because of the occurrence of a metabolic shift, hydrogen was not produced using 100% cheese whey. Interestingly, compared to the 100% olive mill wastewater condition, the use of 20% cheese whey allowed to double the hydrogen yield, reaching the high cumulative hydrogen production of 2.08 LL−1. Obtained results confirm that the two investigated substrates exert inhibiting effects on microorganisms. Nevertheless, co-fermentation is an effective strategy to improve the dark fermentation process of problematic biomass.
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16
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Min Song H, Chan Joo J, Hyun Lim S, Jin Lim H, Lee S, Jae Park S. Production of polyhydroxyalkanoates containing monomers conferring amorphous and elastomeric properties from renewable resources: Current status and future perspectives. BIORESOURCE TECHNOLOGY 2022; 366:128114. [PMID: 36283671 DOI: 10.1016/j.biortech.2022.128114] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
Petrochemical-based plastics cause environmental pollution and threaten humans and ecosystems. Polyhydroxyalkanoate (PHA) is considered a promising alternative to nondegradable plastics since it is eco-friendly and biodegradable polymer having similar properties to conventional plastics. PHA's material properties are generally determined by composition and type of monomers in PHA. PHA can be designed in tailor-made manner for their suitable application areas. Among many monomers in PHAs, ω-hydroxalkanoates such as 3-hydroxypropionate (3HP), 4-hydroxybutyrate (4HB), 5-hydroxyvalerate (5HV), and 6-hydroxyhexanoate (6HHx) and medium-chain-length 3-hydroxyalkanoate such as 3-hydroxyhexanoate (3HHx) and 4-hydroxyvalerate (4HV), have been examined as potential monomers able to confer amorphous and elastomer properties when these are incorporated as comonomer in poly(3-hydroxybutyrate) copolymer that has 3HB as main monomer along with comonomers in different monomer fraction. Herein, recent advances in production of PHAs designed to have amorphous and elastomeric properties from renewable sources such as lignocellulose, levulinic acid, crude glycerol, and waste oil are discussed.
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Affiliation(s)
- Hye Min Song
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jeong Chan Joo
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si, Gyeonggi-do 14662, Republic of Korea
| | - Seo Hyun Lim
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Hye Jin Lim
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Siseon Lee
- Department of Biotechnology, The Catholic University of Korea, Bucheon-si, Gyeonggi-do 14662, Republic of Korea
| | - Si Jae Park
- Department of Chemical Engineering and Materials Science, Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea.
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17
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Process Development of Polyhydroxyalkanoates Production by Halophiles Valorising Food Waste. Bioengineering (Basel) 2022; 9:bioengineering9110630. [DOI: 10.3390/bioengineering9110630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/20/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Polyhydroxyalkanoates (PHA) is an emerging biodegradable plastic family that can replace a broad spectrum of conventional thermoplastics and is promising in the sustainable process development and valorization of organic waste. This study established a novel production system of PHA from food waste through halophilic microbial fermentation with spent medium recycling. The essential processing parameters for batch cultivation of Haloferax mediterranei were optimized for food waste substrate (a 40 g/L loading and 2.5 vvm of aeration), which achieved a yield of 0.3 g PHA/g COD consumed. A batch bioreactor system was developed, which produced 7.0 ± 0.7 g/L cell dry mass and 4.5 ± 0.2 g/L PHA with a 20% dissolved oxygen (DO) level. A DO above 50% saturation resulted in faster cell growth and similar cell mass production but 25% less PHA production. The spent saline medium, treated with H2O2 and rotary evaporation, was successfully reused for four consecutive batches and provided consistent PHA concentrations and product qualities.
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18
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Ding Z, Kumar V, Sar T, Harirchi S, Dregulo AM, Sirohi R, Sindhu R, Binod P, Liu X, Zhang Z, Taherzadeh MJ, Awasthi MK. Agro waste as a potential carbon feedstock for poly-3-hydroxy alkanoates production: Commercialization potential and technical hurdles. BIORESOURCE TECHNOLOGY 2022; 364:128058. [PMID: 36191751 DOI: 10.1016/j.biortech.2022.128058] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
The enormous production and widespread applications of non -biodegradable plastics lead to their accumulation and toxicity to animals and humans. The issue can be addressed by the development of eco-friendly strategies for the production of biopolymers by utilization of waste residues like agro residues. This will address two societal issues - waste management and the development of an eco-friendly biopolymer, poly-3-hydroxy alkanoates (PHAs). Strategies adopted for utilization of agro-residues, challenges and future perspectives are discussed in detail in this comprehensive review. The possibility of PHA properties improvements can be increased by preparation of blends.
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Affiliation(s)
- Zheli Ding
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, Hainan Province 571101, China
| | - Vinay Kumar
- Department of Community Medicine, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam 602105, India
| | - Taner Sar
- Swedish Centre for Resource Recovery, University of Borås, Borås 50190, Sweden
| | - Sharareh Harirchi
- Swedish Centre for Resource Recovery, University of Borås, Borås 50190, Sweden
| | - Andrei Mikhailovich Dregulo
- Institute for Regional Economy Problems of the Russian Academy of Sciences (IRES RAS), 38 Serpukhovskaya str, 190013 Saint-Petersburg, Russia
| | - Ranjna Sirohi
- Department of Food Technology, School of Health Sciences & Technology, University of Petroleum and Energy Studies, Dehradun 248 007, India
| | - Raveendran Sindhu
- Department of Food Technology, TKM Institute of Technology, Kollam 691505, Kerala, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695019, Kerala, India
| | - Xiaodi Liu
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, Hainan Province 571101, China
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | | | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
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Priya A, Hathi Z, Haque MA, Kumar S, Kumar A, Singh E, Lin CSK. Effect of levulinic acid on production of polyhydroxyalkanoates from food waste by Haloferax mediterranei. ENVIRONMENTAL RESEARCH 2022; 214:114001. [PMID: 35934144 DOI: 10.1016/j.envres.2022.114001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/15/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Polyhydroxyalkanoates (PHA), especially poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is considered as the most suitable candidate to replace petrochemical plastics. However, the high production cost and the composition of the monomers in the copolymer are the major constraints in production. The 3-hydroxyvalerate (3HV) rich copolymers are ideal for various applications due to their lower melting points, improved elasticity, and ductility. Haloferax mediterranei is a suitable microorganism for the production of biopolymer PHBV from biowaste. Nevertheless, the potential of H. mediterranei cultivated on food waste as sustainable substrate and levulinic acid as an inducer has not been explored for PHBV production. This study aims at the valorization of food waste as low-cost substrate and evaluation of effect of levulinic acid in the production and composition of PHBV using H. mediterranei. Shake-flask fermentations using different concentrations of salt, glucose and levulinic acid were first performed to optimize the cultivation conditions. The highest growth of the halophile was observed at salt concentration of 15% and glucose of concentration 10 g/L. Under optimized growth conditions, H. mediterranei was cultivated for PHBV production in fed-batch bioreactor with pulse fed levulinic acid. The maximum biomass of 3.19 ± 0.66 g/L was achieved after 140 h of cultivation with 3 g/L of levulinic acid. A decrease in H. mediterranei growth was noticed with the increase in levulinic acid concentration in the range of 3-10 g/L. The overall yield of PHBV at 3, 5, 7 and 10 g/L of levulinic acid were 18.23%, 56.70%, 31.54%, 21.29%, respectively. The optimum concentration of 5 g/L of levulinic acid was found to produce the maximum yield of 56.70% PHBV with 18.55 mol% 3HV content. A correlation between levulinic acid concentrations and PHBV production established in this study can serve as an important reference for future large-scale production.
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Affiliation(s)
- Anshu Priya
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Zubeen Hathi
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Md Ariful Haque
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Sunil Kumar
- Technology Development Centre, Council of Scientific and Industrial Research-National Environmental Engineering Research Institute (CSIR - NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India
| | - Aman Kumar
- Technology Development Centre, Council of Scientific and Industrial Research-National Environmental Engineering Research Institute (CSIR - NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India
| | - Ekta Singh
- Technology Development Centre, Council of Scientific and Industrial Research-National Environmental Engineering Research Institute (CSIR - NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India
| | - Carol S K Lin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong.
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20
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Cai S, Wu Y, Liu R, Jia H, Qiu Y, Jiang M, Ma Y, Yang X, Zhang S, Zhao Y, Cai L. Study on the production of high 3HV content PHBV via an open fermentation with waste silkworm excrement as the carbon source by the haloarchaeon Haloferax mediterranei. Front Microbiol 2022; 13:981605. [PMID: 36060764 PMCID: PMC9432822 DOI: 10.3389/fmicb.2022.981605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/29/2022] [Indexed: 11/13/2022] Open
Abstract
Silkworm excrement is hard to be degraded or bio-utilized by environmental microorganisms due to its high content of heavy metals and antimicrobial biomacromolecules in mulberry leaves. In traditional Chinese silk industry, the silkworm excrement results in environmental problems. In this study, the silkworm excrement after chlorophyll ethanol-extraction was researched. An open fermentation strategy was developed using the silkworm excrement as the sole or partial carbon source by haloarchaea to accumulate polyhydroxyalkanoates. As a haloarchaeon with strong carbon source utilization ability, Haloferax mediterranei was found to accumulate a certain amount of poly(3-hydroxybutyrate-co-3-hydroxyvalerate; PHBV) using waste silkworm excrement. The results showed that the addition of silkworm excrement into glucose based fermentation medium can significantly improve the production of PHBV. Using a mixture carbon source including the extract of silkworm excrement and glucose (with a 1:1 carbon content ratio), the yield of PHBV was 1.73 ± 0.12 g/l, which showed a 26% increase than that of fermentation without the silkworm excrement addition. When the NaCl content of medium was set to approximately 15%, fermentation without sterilization was performed using silkworm excrement as the carbon source. Moreover, the addition of the silkworm excrement extract could increase the 3-hydroxyvalerate (3 HV) content of PHBV regardless of the sterilization or non-sterilization fermentation conditions. When using silkworm excrement as the sole carbon source, the 3 HV content was as high as 16.37 ± 0.54 mol %. The real-time quantitative PCR results showed that the addition of the silkworm excrement could specifically enhance the expression of genes involved in the aspartate/2-ketobutyric acid pathway related to 3 HV synthesis in H. mediterranei, and further analysis of the amino acid of the silkworm excrement suggested that the high content of threonine in the silkworm excrement might be the reason for the increase of 3 HV content. Taken together, the success of non-sterile fermentation in hypersaline condition using haloarchaea implied a novel way to reuse the silkworm excrement, which not only reduces the production costs of PHBV, but also is conducive to environmental protection.
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Affiliation(s)
- Shuangfeng Cai
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Medicine, Huaqiao University, Xiamen, China
| | - Yaran Wu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Runjie Liu
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Medicine, Huaqiao University, Xiamen, China
| | - Hongzhe Jia
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Yunxiao Qiu
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Medicine, Huaqiao University, Xiamen, China
| | - Min Jiang
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Medicine, Huaqiao University, Xiamen, China
| | - Yuwen Ma
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Xingxu Yang
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Medicine, Huaqiao University, Xiamen, China
| | - Siyu Zhang
- Engineering Research Center of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, School of Medicine, Huaqiao University, Xiamen, China
| | - Yan Zhao
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Lei Cai
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
- *Correspondence: Lei Cai,
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21
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Ibrahim MI, Alsafadi D, Safi E, Alenazi E, Aboulsoud M, Hussein MA, Alamry KA. Biosynthesized poly(3-hydroxybutyrate-co-3-hydroxyvalerate) as biocompatible microcapsules with extended release for busulfan and montelukast. Int J Biol Macromol 2022; 213:728-737. [PMID: 35671908 DOI: 10.1016/j.ijbiomac.2022.05.181] [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: 02/15/2022] [Revised: 05/09/2022] [Accepted: 05/27/2022] [Indexed: 11/18/2022]
Abstract
An extended release dosage form based on encapsulating the challenging drug busulfan within microspheres of the biodegradable, biocompatible and biosynthesized poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) polyester was achieved. The used (PHBV) polymer was biosynthesized by the halophilic archaeon Haloferax mediterranei from date waste biomass as feed-stock. PHBV microspheres of 1.2-2.1 μm diameter were successfully fabricated and loaded with busulfan with an encapsulation efficiency of 29.2 ± 0.2%. In addition, PHBV microspheres of 1.5-3.5 μm diameter and loaded with montelukast sodium (MK) drug were also fabricated with an encapsulation efficiency of 16.0 ± 0.4%. The double-emulsion solvent evaporation method was used to fabricate the drug-loaded microspheres. The drug-loaded microspheres have been characterized by XRD, FTIR and SEM, and confirmed to be successfully fabricated. The drugs in vitro release profiles have shown extended release for up to 3 days in case of busulfan and 8 h in case of montelukast sodium. The in vitro release profiles for busulfan and montelukast suggest that these drug-loaded microcapsules can be efficiently used as new dosage forms to solve the current issues of busulfan administration protocols, and to introduce a new dosage form for montelukast with extended release performance.
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Affiliation(s)
- Mohammad I Ibrahim
- Department of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Diya Alsafadi
- Biocatalysis and Biosynthesis Research Unit, Advanced Research Center, Royal Scientific Society, Amman 11941, Jordan
| | - Eyad Safi
- College of Petroleum Engineering & Geosciences (CPG), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, Saudi Arabia
| | - Eid Alenazi
- King Faisal Specialist Hospital (KFSH), Riyadh, Saudi Arabia
| | | | - Mahmoud A Hussein
- Department of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Polymer Chemistry Lab., Chemistry Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Khalid A Alamry
- Department of Chemistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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22
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Musilova J, Kourilova X, Pernicova I, Bezdicek M, Lengerova M, Obruca S, Sedlar K. Novel thermophilic polyhydroxyalkanoates producing strain Aneurinibacillus thermoaerophilus CCM 8960. Appl Microbiol Biotechnol 2022; 106:4669-4681. [PMID: 35759037 DOI: 10.1007/s00253-022-12039-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/16/2022] [Accepted: 06/18/2022] [Indexed: 11/26/2022]
Abstract
Aneurinibacillus thermoaerophilus CCM 8960 is a thermophilic bacterium isolated from compost in Brno. The bacterium accumulates polyhydroxyalkanoates (PHAs), a biodegradable and renewable alternative to petrochemical polymers. The bacterium reveals several features that make it a very interesting candidate for the industrial production of PHA. At first, due to its thermophilic character, the bacterium can be utilized in agreement with the concept of next-generation industrial biotechnology (NGIB), which relies on extremophiles. Second, the bacterium is capable of producing PHA copolymers containing a very high portion of 4-hydroxybutyrate (4HB). Such materials possess unique properties and can be advantageously used in multiple applications, including but not limited to medicine and healthcare. Therefore, this work focuses on the in-depth characterization of A. thermoaerophilus CCM 8960. In particular, we sequenced and assembled the genome of the bacterium and identified its most important genetic features, such as the presence of plasmids, prophages, CRISPR arrays, antibiotic-resistant genes, and restriction-modification (R-M) systems, which might be crucial for the development of genome editing tools. Furthermore, we focused on genes directly involved in PHA metabolism. We also experimentally studied the kinetics of glycerol and 1,4-butanediol (1,4BD) utilization as well as biomass growth and PHA production during cultivation. Based on these data, we constructed a metabolic model to reveal metabolic fluxes and nodes of glycerol and 1,4BD concerning their incorporation into the poly(3-hydroxybutyrate-co-4-hydroxybutyrate (P(3HB-co-4HB)) structure. KEY POINTS: • Aneurinibacillus sp. H1 was identified as Aneurinibacillus thermoaerophilus. • PHA metabolism pathway with associated genes was presented. • Unique monomer composition of produced PHAs was reported.
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Affiliation(s)
- Jana Musilova
- Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Xenie Kourilova
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic
| | - Iva Pernicova
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic
| | - Matej Bezdicek
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
| | - Martina Lengerova
- Department of Internal Medicine - Hematology and Oncology, University Hospital Brno, Brno, Czech Republic
| | - Stanislav Obruca
- Department of Food Chemistry and Biotechnology, Faculty of Chemistry, Brno University of Technology, Brno, Czech Republic
| | - Karel Sedlar
- Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic.
- Department of Informatics, Institute of Bioinformatics, Ludwig-Maximilians-Universität München, Munich, Germany.
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Qiao G, Li X, Li J, Zhang M, Shen Y, Zhao Z, Zhang Y, Qi Z, Chen P, Sun Y, Cang P, Liu P, Wangkahart E, Wang Z. An Eco-Friendly Conversion of Aquaculture Suspended Solid Wastes Into High-Quality Fish Food by Improving Poly-β-Hydroxybutyrate Production. Front Physiol 2022; 13:797625. [PMID: 35721543 PMCID: PMC9205610 DOI: 10.3389/fphys.2022.797625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 04/15/2022] [Indexed: 12/03/2022] Open
Abstract
The aquaculture industry is vital in providing a valuable protein food source for humans, but generates a huge amount of solid and dissolved wastes that pose great risks to the environment and aquaculture sustainability. Suspended solids (in short SS), one of the aquaculture wastes, are very difficult to be treated due to their high organic contents. The bioconversion from wastewater, food effluents, and activated sludge into poly-β-hydroxybutyrate (PHB) is a sustainable alternative to generate an additional income and could be highly attractive to the agricultural and environmental management firms. However, little is known about its potential application in aquaculture wastes. In the present study, we first determined that 7.2% of SS was PHB. Then, the production of PHB was increased two-fold by the optimal fermentation conditions of wheat bran and microbial cocktails at a C/N ratio of 12. Also, the PHB-enriched SS showed a higher total ammonia nitrogen removal rate. Importantly, we further demonstrated that the PHB-enriched SS as a feed could promote fish growth and up-regulate the expression of the immune-related genes. Our study developed an eco-friendly and simple approach to transforming problematic SS wastes into PHB-enriched high-quality food for omnivorous fish, which will increase the usage efficiency of SS and provide a cheaper diet for aquatic animals.
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Affiliation(s)
- Guo Qiao
- Yancheng Institute of Technology, Yancheng, China
| | - Xiaoxia Li
- Yancheng Institute of Technology, Yancheng, China.,School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Jun Li
- Department of Biological Sciences, Biomolecular Sciences Institute, Florida International University, Miami, FL, United States
| | | | - Yang Shen
- Yancheng Institute of Technology, Yancheng, China
| | - Zhigang Zhao
- Heilongjiang Provincial Key Laboratory of Cold Water Fish Germplasm Resources and Aquaculture, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China
| | - Yichan Zhang
- Yancheng Institute of Technology, Yancheng, China
| | - Zhitao Qi
- Yancheng Institute of Technology, Yancheng, China
| | - Peng Chen
- Yancheng Institute of Technology, Yancheng, China
| | - Yuyu Sun
- Yancheng Institute of Technology, Yancheng, China
| | | | - Peng Liu
- Yantai Marine Economic Research Institute, Yantai, China
| | - Eakapol Wangkahart
- Laboratory of Fish Immunology and Nutrigenomics, Applied Animal and Aquatic Sciences Research Unit, Division of Fisheries, Faculty of Technology, Mahasarakham University, Maha Sarakham, Thailand
| | - Zisheng Wang
- Yancheng Institute of Technology, Yancheng, China
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24
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Chou HC, Chen CH, Chu HK, Huang CM, Wang HJ, Tu WL, Guo GL. The optimal combination of Nile red identification, colony polymerase chain reaction, and gas chromatography detection methods in screening for polyhydroxyalkanoicate-producing bacteria. Arch Microbiol 2022; 204:312. [PMID: 35538332 DOI: 10.1007/s00203-022-02868-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 03/02/2022] [Accepted: 03/23/2022] [Indexed: 11/24/2022]
Abstract
The study devised a detection process combining Nile red-containing media, polymerase chain reaction (PCR), and gas chromatography (GC) to evaluate the possibility of microbes becoming polyhydroxyalkanoate (PHA) producers. The Nile red and PCR detection steps of designating PHA producers had true positive rates of 39.4% and 40%, respectively, and the use of GC analysis as the final step yielded accurate results for the production types and yields of PHAs. When the number of screening samples was up to 102, connecting all three inspection methods in tandem generated economic benefits. When up to 105 samples were screened, the use of all three detection methods reduced the cost to 3% of the cost and the time consumed 6% of using just Nile red plus GC or PCR plus GC. However, when the sum of samples exceeded 108, the cost of combining the three methods exceeds 1 million US dollars and was excessive; here, the combination of Nile red plus PCR could be considered, even though the true positive rate was only 30.7%.
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Affiliation(s)
- Hung-Che Chou
- Institute of Nuclear Energy Research, Taoyuan City, Taiwan
| | - Chia-Hsin Chen
- Institute of Nuclear Energy Research, Taoyuan City, Taiwan
| | - Hsiao-Kai Chu
- Institute of Nuclear Energy Research, Taoyuan City, Taiwan
| | - Chun-Mei Huang
- Institute of Nuclear Energy Research, Taoyuan City, Taiwan
| | - Hui-Jun Wang
- Institute of Nuclear Energy Research, Taoyuan City, Taiwan
| | - Wei-Lin Tu
- Institute of Nuclear Energy Research, Taoyuan City, Taiwan
| | - Gia-Luen Guo
- Institute of Nuclear Energy Research, Taoyuan City, Taiwan.
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25
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Novackova I, Kourilova X, Mrazova K, Sedlacek P, Kalina M, Krzyzanek V, Koller M, Obruca S. Combination of Hypotonic Lysis and Application of Detergent for Isolation of Polyhydroxyalkanoates from Extremophiles. Polymers (Basel) 2022; 14:polym14091761. [PMID: 35566928 PMCID: PMC9104112 DOI: 10.3390/polym14091761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/22/2022] [Accepted: 04/23/2022] [Indexed: 11/22/2022] Open
Abstract
Production of polyhydroxyalkanoates (PHA), microbial biopolyesters, employing extremophilic microorganisms is a very promising concept relying on robustness of such organisms against microbial contamination, which provides numerous economic and technological benefits. In this work, we took advantage of the natural susceptibility of halophilic and thermophilic PHA producers to hypotonic lysis and we developed a simple and robust approach enabling effective isolation of PHA materials from microbial cells. The method is based on the exposition of microbial cells to hypotonic conditions induced by the diluted solution of sodium dodecyl sulfate (SDS) at elevated temperatures. Such conditions lead to disruption of the cells and release of PHA granules. Moreover, SDS, apart from its cell-disruptive function, also solubilizes hydrophobic components, which would otherwise contaminate PHA materials. The purity of obtained materials, as well as the yields of recovery, reach high values (values of purity higher than 99 wt.%, yields close to 1). Furthermore, we also focused on the removal of SDS from wastewater. The simple, inexpensive, and safe technique is based on the precipitation of SDS in the presence of KCl. The precipitate can be simply removed by decantation or centrifugation. Moreover, there is also the possibility to regenerate the SDS, which would substantially improve the economic feasibility of the process.
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Affiliation(s)
- Ivana Novackova
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; (I.N.); (X.K.); (P.S.); (M.K.)
| | - Xenie Kourilova
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; (I.N.); (X.K.); (P.S.); (M.K.)
| | - Katerina Mrazova
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic; (K.M.); (V.K.)
| | - Petr Sedlacek
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; (I.N.); (X.K.); (P.S.); (M.K.)
| | - Michal Kalina
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; (I.N.); (X.K.); (P.S.); (M.K.)
| | - Vladislav Krzyzanek
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Kralovopolska 147, 612 64 Brno, Czech Republic; (K.M.); (V.K.)
| | - Martin Koller
- Research Management and Service, c/o Institute of Chemistry, NAWI Graz, University of Graz, Heinrichstrasse 28/IV, 8010 Graz, Austria;
- ARENA—Arbeitsgemeinschaft für Ressourcenschonende & Nachhaltige Technologien, Inffeldgasse 21b, 8010 Graz, Austria
| | - Stanislav Obruca
- Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; (I.N.); (X.K.); (P.S.); (M.K.)
- Correspondence: ; Tel.: +420-541-149-354
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26
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Parroquin Gonzalez M, Winterburn J. Enhanced biosynthesis of polyhydroxyalkanoates by continuous feeding of volatile fatty acids in Haloferax mediterranei. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2021.108307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Haloarchaea as emerging big players in future polyhydroxyalkanoate bioproduction: Review of trends and perspectives. CURRENT RESEARCH IN BIOTECHNOLOGY 2022. [DOI: 10.1016/j.crbiot.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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28
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Ortega F, Versino F, López OV, García MA. Biobased composites from agro-industrial wastes and by-products. EMERGENT MATERIALS 2022; 5:873-921. [PMID: 34849454 PMCID: PMC8614084 DOI: 10.1007/s42247-021-00319-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 10/14/2021] [Indexed: 05/09/2023]
Abstract
The greater awareness of non-renewable natural resources preservation needs has led to the development of more ecological high-performance polymeric materials with new functionalities. In this regard, biobased composites are considered interesting options, especially those obtained from agro-industrial wastes and by-products. These are low-cost raw materials derived from renewable sources, which are mostly biodegradable and would otherwise typically be discarded. In this review, recent and innovative academic studies on composites obtained from biopolymers, natural fillers and active agents, as well as green-synthesized nanoparticles are presented. An in-depth discussion of biobased composites structures, properties, manufacture, and life-cycle assessment (LCA) is provided along with a wide up-to-date overview of the most recent works in the field with appropriate references. Potential uses of biobased composites from agri-food residues such as active and intelligent food packaging, agricultural inputs, tissue engineering, among others are described, considering that the specific characteristics of these materials should match the proposed application.
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Affiliation(s)
- Florencia Ortega
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CICPBA, 47 y 116 (1900), La Plata, Argentina
| | - Florencia Versino
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CICPBA, 47 y 116 (1900), La Plata, Argentina
| | - Olivia Valeria López
- Planta Piloto de Ingeniería Química (PLAPIQUI), UNS-CONICET, Camino La Carrindanga km.7 (8000), Bahía Blanca, Argentina
| | - María Alejandra García
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), UNLP-CONICET-CICPBA, 47 y 116 (1900), La Plata, Argentina
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29
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Ghosh S, Coons J, Yeager C, Halley P, Chemodanov A, Belgorodsky B, Gozin M, Chen GQ, Golberg A. Halophyte biorefinery for polyhydroxyalkanoates production from Ulva sp. Hydrolysate with Haloferax mediterranei in pneumatically agitated bioreactors and ultrasound harvesting. BIORESOURCE TECHNOLOGY 2022; 344:125964. [PMID: 34728090 DOI: 10.1016/j.biortech.2021.125964] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
The present study tested the outdoor cultivation of Haloferax mediterranei for PHA production from green macroalgae Ulva sp. in pneumatically agitated bioreactors and applied ultrasonic separation for enhanced settling of archaeal cells. Scaled-up cultivation (40 L) yielded maximum biomass productivity of 50.1 ± 0.11 mg·L-1·h-1 with a PHA productivity of 27 ± 0.01 mg·L-1·h-1 and conversion yield of 0.107 g PHA per gram UlvaDW. The maximum mass fraction of PHA achieved in biomass was calculated to be 56% w/w. Ultrasonic harvesting of Hfx. mediterranei cells approached 30% removal at energy inputs around 7.8 kWh·m-3, and indicated no significant aggregation enhancement by Ca2+ addition. Molecular weight analysis showed an increase in Polydispersity Index (PDI) when the corresponding air velocities were increased suggesting that the polymer was more homogeneous at lower mixing velocities. The current study demonstrated scalable processes for PHA production using Ulva sp. feedstock providing new technologies for halophilic biorefinery.
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Affiliation(s)
- Supratim Ghosh
- Porter School of the Environment and Earth Sciences, Faculty of Exact Science, Tel Aviv University, Tel Aviv 69978, Israel.
| | - Jim Coons
- Chemical Diagnostics and Engineering Group, Chemistry Division, Los Alamos National Laboratory, MS J964, Bikini Atoll Rd, Los Alamos, NM 87545 USA
| | - Chris Yeager
- Chemical Diagnostics and Engineering Group, Chemistry Division, Los Alamos National Laboratory, MS J964, Bikini Atoll Rd, Los Alamos, NM 87545 USA
| | - Peter Halley
- School of Chemical Engineering, University of Queensland, St Lucia QLD 4072 Australia
| | - Alexander Chemodanov
- Porter School of the Environment and Earth Sciences, Faculty of Exact Science, Tel Aviv University, Tel Aviv 69978, Israel
| | - Bogdan Belgorodsky
- School of Chemistry, Faculty of Exact Science, Tel Aviv University, Tel Aviv 69978, Israel
| | - Michael Gozin
- School of Chemistry, Faculty of Exact Science, Tel Aviv University, Tel Aviv 69978, Israel
| | - Guo-Qiang Chen
- Center for Synthetic and Systems Biology, School of Life Sciences, Tsinghua University, Beijing, PR China
| | - Alexander Golberg
- Porter School of the Environment and Earth Sciences, Faculty of Exact Science, Tel Aviv University, Tel Aviv 69978, Israel
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30
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Obruča S, Dvořák P, Sedláček P, Koller M, Sedlář K, Pernicová I, Šafránek D. Polyhydroxyalkanoates synthesis by halophiles and thermophiles: towards sustainable production of microbial bioplastics. Biotechnol Adv 2022; 58:107906. [DOI: 10.1016/j.biotechadv.2022.107906] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/15/2021] [Accepted: 01/07/2022] [Indexed: 01/10/2023]
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31
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Techno-Economic Analysis on an Industrial-Scale Production System of Polyhydroxyalkanoates (PHA) from Cheese By-Products by Halophiles. Processes (Basel) 2021. [DOI: 10.3390/pr10010017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Polyhydroxyalkanoates (PHA) are a family of biodegradable plastics used as an ecofriendly alternative for conventional plastics in various applications. In this study, an industrial-scale PHA production system was designed and analyzed for the material flows and economics with the use of SuperPro Designer. Haloferax mediterranei was utilized to produce poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). Byproduct streams from a local cheese plant, with an input of 168.7 metric ton/day (MT/day) lactose, were used as the feedstock. Three scenarios with different processes for the treatments of used enzyme and spent medium were investigated and the major factors that influence the overall economics were identified. The simulated system produces 9700 MT/year PHBV with a yield of 0.2 g PHBV/g lactose and an overall process efficiency of 87%. The breakeven price was found to be more sensitive to the lactose price than enzyme price. The scenario with enzyme reuse and spent medium recycling achieved the lowest breakeven price among others, which can be less than 4 $/kg PHA based on the delactosed permeate (DLP) unit price. The study suggests utilizing dairy derived feedstocks has the potential to make PHA competitive in the bioplastic market, which could be beneficial to both dairy and bioplastic industries.
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32
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Trapé DV, López OV, Villar MA. Vinasse: from a residue to a high added value biopolymer. BIORESOUR BIOPROCESS 2021; 8:130. [PMID: 38650284 PMCID: PMC10992345 DOI: 10.1186/s40643-021-00476-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/01/2021] [Indexed: 11/10/2022] Open
Abstract
This work aimed to study the feasibility of using vinasse for polyhydroxybutyrate (PHB) production by Bacillus megaterium. To optimize the culture medium, a Box-Behnken design was employed considering carbon (C), nitrogen (N), and phosphorus (Ph) concentrations as independent variables and PHB productivity as the response variable. The productivity decreased when C or N were increased, probably due to the presence of phenolic compounds and the limitation of N for the production of PHB by Bacillus sp. bacteria. An additional experimental design to optimize the C/N ratio and growing conditions (fermentation time and temperature) was carried out. Fermentation time had a statistically significant effect on PHB productivity reaching 10.6 mg/L h. On the other hand, the variability in physicochemical properties of vinasse samples led to significant differences in PHB productivity. Lower productivity values were obtained when vinasse had higher values of DBO. Therefore, biopolymers production from vinasse is a feasible alternative to valorize this bioethanol by-product.
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Affiliation(s)
- Daiana V Trapé
- Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Camino La Carrindanga Km. 7, 8000, Bahía Blanca, Argentina
- Departamento de Ingeniería Química, Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina
| | - Olivia V López
- Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Camino La Carrindanga Km. 7, 8000, Bahía Blanca, Argentina
- Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina
| | - Marcelo A Villar
- Planta Piloto de Ingeniería Química, PLAPIQUI (UNS-CONICET), Camino La Carrindanga Km. 7, 8000, Bahía Blanca, Argentina.
- Departamento de Ingeniería Química, Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina.
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Wang J, Liu S, Huang J, Qu Z. A review on polyhydroxyalkanoate production from agricultural waste Biomass: Development, Advances, circular Approach, and challenges. BIORESOURCE TECHNOLOGY 2021; 342:126008. [PMID: 34592618 DOI: 10.1016/j.biortech.2021.126008] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/15/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
Polyhydroxyalkanoates are biopolymers produced by microbial fermentation. They have excellent biodegradability and biocompatibility, which are regarded as promising substitutes for traditional plastics in various production and application fields. This review details the research progress in PHA production from lignocellulosic crop residues, lipid-type agricultural wastes, and other agro-industrial wastes such as molasses and whey. The effective use of agricultural waste can further reduce the cost of PHA production while avoiding competition between industrial production and food. The latest information on fermentation parameter optimization, fermentation strategies, kinetic studies, and circular approach has also been discussed. This review aims to analyze the crucial process of the PHA production from agricultural wastes to provide support and reference for further scale-up and industrial production.
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Affiliation(s)
- Jianfei Wang
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse NY13210, United States
| | - Shijie Liu
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse NY13210, United States.
| | - Jiaqi Huang
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse NY13210, United States; The Center for Biotechnology & Interdisciplinary Studies (CBIS) at Rensselaer Polytechnic Institute, Troy NY12180, United States
| | - Zixuan Qu
- School of Engineering, Tufts University, Medford, MA 02155, United States
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34
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Liu H, Kumar V, Jia L, Sarsaiya S, Kumar D, Juneja A, Zhang Z, Sindhu R, Binod P, Bhatia SK, Awasthi MK. Biopolymer poly-hydroxyalkanoates (PHA) production from apple industrial waste residues: A review. CHEMOSPHERE 2021; 284:131427. [PMID: 34323796 DOI: 10.1016/j.chemosphere.2021.131427] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/27/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Apple pomace, the residue which is left out after processing of apple serves as a potential carbon source for the production of biopolymer, PHA (poly-hydroxyalkanoates). It is rich in carbohydrates, fibers and polyphenols. Utilization of these waste resources has dual societal benefit-waste management and conversion of waste to an eco-friendly biopolymer. This will lower the overall economics of the process. A major limitation for the commercialization of biopolymer in comparison with petroleum derived polymer is the high cost. This article gives an overview of valorization of apple pomace for the production of biopolymer, various strategies adopted, limitations as well as future perspectives.
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Affiliation(s)
- Hong Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Vinay Kumar
- Department of Biotechnology, Indian Institute of Technology(IIT) Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Linjing Jia
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, 402 Walters Hall, 1 Forestry Drive, Syracuse, NY, 13210, USA
| | - Surendra Sarsaiya
- Key Laboratory of Basic Pharmacology and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
| | - Deepak Kumar
- Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, 402 Walters Hall, 1 Forestry Drive, Syracuse, NY, 13210, USA
| | - Ankita Juneja
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana Champaign, 1304 W. Pennsylvania Avenue, Urbana, IL, 61801, USA
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, 695019, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, 695019, India
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, 05029, Republic of Korea
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, China.
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35
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Production of Polyhydroxyalkanoates in Unsterilized Hyper-Saline Medium by Halophiles Using Waste Silkworm Excrement as Carbon Source. Molecules 2021; 26:molecules26237122. [PMID: 34885704 PMCID: PMC8659123 DOI: 10.3390/molecules26237122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/20/2021] [Accepted: 11/21/2021] [Indexed: 12/03/2022] Open
Abstract
The chlorophyll ethanol-extracted silkworm excrement was hardly biologically reused or fermented by most microorganisms. However, partial extremely environmental halophiles were reported to be able to utilize a variety of inexpensive carbon sources to accumulate polyhydroxyalkanoates. In this study, by using the nile red staining and gas chromatography assays, two endogenous haloarchaea strains: Haloarcula hispanica A85 and Natrinema altunense A112 of silkworm excrement were shown to accumulate poly(3-hydroxybutyrate) up to 0.23 g/L and 0.08 g/L, respectively, when using the silkworm excrement as the sole carbon source. The PHA production of two haloarchaea showed no significant decreases in the silkworm excrement medium without being sterilized compared to that of the sterilized medium. Meanwhile, the CFU experiments revealed that there were more than 60% target PHAs producing haloarchaea cells at the time of the highest PHAs production, and the addition of 0.5% glucose into the open fermentation medium can largely increase both the ratio of target haloarchaea cells (to nearly 100%) and the production of PHAs. In conclusion, our study demonstrated the feasibility of using endogenous haloarchaea to utilize waste silkworm excrement, effectively. The introduce of halophiles could provide a potential way for open fermentation to further lower the cost of the production of PHAs.
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Khattab AM, Esmael ME, Farrag AA, Ibrahim MIA. Structural assessment of the bioplastic (poly-3-hydroxybutyrate) produced by Bacillus flexus Azu-A2 through cheese whey valorization. Int J Biol Macromol 2021; 190:319-332. [PMID: 34411615 DOI: 10.1016/j.ijbiomac.2021.08.090] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/24/2021] [Accepted: 08/10/2021] [Indexed: 12/17/2022]
Abstract
The demand for the production of biodegradable plastics has significantly increased. Bioplastics have become an essential alternative to the threats of the daily consumable plastics, sourced from fossil fuels, to the environment. Polyhydroxyalkonates (PHAs) are a ubiquitous group of bioderived and biodegradable plastics, however their production is limited by the costs associated mainly with the carbon sources. Herein, this study aims to reduce the PHAs production cost by using a by-product from the dairy industry, i.e., cheese whey (CW), as a sole carbon source. The developed process recruits an aquatic isolate, Bacillus flexus Azu-A2, and is optimized via studying various parameters using the shaking flasks technique. The results showed that the maximum PHA production (0.95 g L-1) and PHA content (20.96%, w/w), were obtained after incubation period 72 h at 45 °C, 100 rpm agitation rate, 50% CWS concentration, pH 8.5, and 1.0 g L-1 ammonium chloride. Physiochemically, Fourier transform infrared spectroscopy (FTIR), gas chromatography-mass spectroscopy (GC-MS), nuclear magnetic resonance (NMR), and energy-dispersive X-ray (EDX) techniques, emphasized the type of the extracted PHA as polyhydroxybutyrate (PHB). The thermal properties of PHB were measured using differential scanning calorimetry (DSC), recording melting transition temperature (Tm) at 170.96 °C. Furthermore, a scanning electron microscope (SEM) visualized a homogenous microporous structure for the thin PHB biofilm. In essence, this study highlights the ability of Bacillus flexus Azu-A2 to produce a good yield of highly purified PHB at reduced production cost from dairy CW. Consequently, the current study paves the way for an improved whey management strategy.
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Affiliation(s)
- Abdelrahman M Khattab
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt
| | - Mahmoud E Esmael
- Al-Azhar Center for Fermentation Biotechnology and Applied Microbiology, Al-Azhar University, Nasr City, Cairo 11884, Egypt
| | - Ayman A Farrag
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt; Al-Azhar Center for Fermentation Biotechnology and Applied Microbiology, Al-Azhar University, Nasr City, Cairo 11884, Egypt
| | - Mohamed I A Ibrahim
- Laboratory of Marine Chemistry, Marine Environment Division, National Institute of Oceanography and Fisheries, NIOF, Egypt.
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Biotechnological Conversion of Grape Pomace to Poly(3-hydroxybutyrate) by Moderately Thermophilic Bacterium Tepidimonas taiwanensis. Bioengineering (Basel) 2021; 8:bioengineering8100141. [PMID: 34677214 PMCID: PMC8533406 DOI: 10.3390/bioengineering8100141] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 11/16/2022] Open
Abstract
Polyhydroxyalkanoates (PHA) are microbial polyesters that have recently come to the forefront of interest due to their biodegradability and production from renewable sources. A potential increase in competitiveness of PHA production process comes with a combination of the use of thermophilic bacteria with the mutual use of waste substrates. In this work, the thermophilic bacterium Tepidimonas taiwanensis LMG 22826 was identified as a promising PHA producer. The ability to produce PHA in T. taiwanensis was studied both on genotype and phenotype levels. The gene encoding the Class I PHA synthase, a crucial enzyme in PHA synthesis, was detected both by genome database search and by PCR. The microbial culture of T. taiwanensis was capable of efficient utilization of glucose and fructose. When cultivated on glucose as the only carbon source at 50 °C, the PHA titers reached up to 3.55 g/L, and PHA content in cell dry mass was 65%. The preference of fructose and glucose opens the possibility to employ T. taiwanensis for PHA production on various food wastes rich in these abundant sugars. In this work, PHA production on grape pomace extracts was successfully tested.
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Zhao X, Niu Y, Mi C, Gong H, Yang X, Cheng J, Zhou Z, Liu J, Peng X, Wei D. Electrospinning nanofibers of microbial polyhydroxyalkanoates for applications in medical tissue engineering. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210418] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xiao‐Hong Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Yi‐Nuo Niu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Chen‐Hui Mi
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Hai‐Lun Gong
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Xin‐Yu Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Ji‐Si‐Yu Cheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Zi‐Qi Zhou
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Jia‐Xuan Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Xue‐Liang Peng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
| | - Dai‐Xu Wei
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine Northwest University Xi'an China
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Recent Advances in the Biosynthesis of Polyhydroxyalkanoates from Lignocellulosic Feedstocks. Life (Basel) 2021; 11:life11080807. [PMID: 34440551 PMCID: PMC8398495 DOI: 10.3390/life11080807] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/26/2021] [Accepted: 08/03/2021] [Indexed: 12/20/2022] Open
Abstract
Polyhydroxyalkanoates (PHA) are biodegradable polymers that are considered able to replace synthetic plastic because their biochemical characteristics are in some cases the same as other biodegradable polymers. However, due to the disadvantages of costly and non-renewable carbon sources, the production of PHA has been lower in the industrial sector against conventional plastics. At the same time, first-generation sugar-based cultivated feedstocks as substrates for PHA production threatens food security and considerably require other resources such as land and energy. Therefore, attempts have been made in pursuit of suitable sustainable and affordable sources of carbon to reduce production costs. Thus, in this review, we highlight utilising waste lignocellulosic feedstocks (LF) as a renewable and inexpensive carbon source to produce PHA. These waste feedstocks, second-generation plant lignocellulosic biomass, such as maize stoves, dedicated energy crops, rice straws, wood chips, are commonly available renewable biomass sources with a steady supply of about 150 billion tonnes per year of global yield. The generation of PHA from lignocellulose is still in its infancy, hence more screening of lignocellulosic materials and improvements in downstream processing and substrate pre-treatment are needed in the future to further advance the biopolymer sector.
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Bhola S, Arora K, Kulshrestha S, Mehariya S, Bhatia RK, Kaur P, Kumar P. Established and Emerging Producers of PHA: Redefining the Possibility. Appl Biochem Biotechnol 2021; 193:3812-3854. [PMID: 34347250 DOI: 10.1007/s12010-021-03626-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 07/12/2021] [Indexed: 12/25/2022]
Abstract
The polyhydroxyalkanoate was discovered almost around a century ago. Still, all the efforts to replace the traditional non-biodegradable plastic with much more environmentally friendly alternative are not enough. While the petroleum-based plastic is like a parasite, taking over the planet rapidly and without any feasible cure, its perennial presence has made the ocean a floating island of life-threatening debris and has flooded the landfills with toxic towering mountains. It demands for an immediate solution; most resembling answer would be the polyhydroxyalkanoates. The production cost is yet one of the significant challenges that various corporate is facing to replace the petroleum-based plastic. To deal with the economic constrain better strain, better practices, and a better market can be adopted for superior results. It demands for systems for polyhydroxyalkanoate production namely bacteria, yeast, microalgae, and transgenic plants. Solely strains affect more than 40% of overall production cost, playing a significant role in both upstream and downstream processes. The highly modifiable nature of the biopolymer provides the opportunity to replace the petroleum plastic in almost all sectors from food packaging to medical industry. The review will highlight the recent advancements and techno-economic analysis of current commercial models of polyhydroxyalkanoate production. Bio-compatibility and the biodegradability perks to be utilized highly efficient in the medical applications gives ample reason to tilt the scale in the favor of the polyhydroxyalkanoate as the new conventional and sustainable plastic.
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Affiliation(s)
- Shivam Bhola
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, 173229, India
| | - Kanika Arora
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, 173229, India
| | - Saurabh Kulshrestha
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, 173229, India
| | | | - Ravi Kant Bhatia
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, 171005, India
| | - Parneet Kaur
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, 173229, India
| | - Pradeep Kumar
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, 173229, India.
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Ubiquitousness of Haloferax and Carotenoid Producing Genes in Arabian Sea Coastal Biosystems of India. Mar Drugs 2021; 19:md19080442. [PMID: 34436281 PMCID: PMC8400781 DOI: 10.3390/md19080442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 12/14/2022] Open
Abstract
This study presents a comparative analysis of halophiles from the global open sea and coastal biosystems through shotgun metagenomes (n = 209) retrieved from public repositories. The open sea was significantly enriched with Prochlorococcus and Candidatus pelagibacter. Meanwhile, coastal biosystems were dominated by Marinobacter and Alcanivorax. Halophilic archaea Haloarcula and Haloquandratum, predominant in the coastal biosystem, were significantly (p < 0.05) enriched in coastal biosystems compared to the open sea. Analysis of whole genomes (n = 23,540), retrieved from EzBioCloud, detected crtI in 64.66% of genomes, while cruF was observed in 1.69% Bacteria and 40.75% Archaea. We further confirmed the viability and carotenoid pigment production by pure culture isolation (n = 1351) of extreme halophiles from sediments (n = 410 × 3) sampling at the Arabian coastline of India. All red-pigmented isolates were represented exclusively by Haloferax, resistant to saturated NaCl (6 M), and had >60% G + C content. Multidrug resistance to tetracycline, gentamicin, ampicillin, and chloramphenicol were also observed. Our study showed that coastal biosystems could be more suited for bioprospection of halophiles rather than the open sea.
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Mohanrasu K, Guru Raj Rao R, Dinesh GH, Zhang K, Sudhakar M, Pugazhendhi A, Jeyakanthan J, Ponnuchamy K, Govarthanan M, Arun A. Production and characterization of biodegradable polyhydroxybutyrate by Micrococcus luteus isolated from marine environment. Int J Biol Macromol 2021; 186:125-134. [PMID: 34246666 DOI: 10.1016/j.ijbiomac.2021.07.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 11/26/2022]
Abstract
Marine microorganisms are reported to produce polyhydroxybutyrate (PHB) that has wide range of medical and industrial applications with the advantage of biodegradability. PHBs are synthesized as an energy and carbon storage element under metabolic pressure. The scope of this work is enhancing PHB production using marine microbial isolate, Micrococcus luteus by selectively optimizing various growth conditions such as different media components and growth parameters that influence the cell growth and PHB production were sampled. Micrococcus luteus produced 7.54 g/L of PHB utilizing glucose as a carbon source and ammonium sulphate as a nitrogen source with maximum efficiency. The same optimized operational conditions were further employed in batch fermentation over a time span of 72 h. Interestingly higher cell dry weight of 21.52 g/L with PHB yield of 12.18 g/L and 56.59% polymer content was observed in batch fermentation studies at 64 h. The chemical nature of the extracted polymer was validated with physio-chemical experiments and was at par with the commercially available PHB. This study will spotlight M. luteus as a potential source for large-scale industrial production of PHB with reducing environmental pollutions.
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Affiliation(s)
- K Mohanrasu
- Department of Microbiology, Alagappa University, Karaikudi, Tamil Nadu, India.
| | - R Guru Raj Rao
- Structural Biology and Bio-Computing Lab, Department of Bioinformatics, Alagappa University, Karaikudi 630 004, Tamil Nadu, India
| | - G H Dinesh
- Department of Microbiology, Alagappa University, Karaikudi, Tamil Nadu, India
| | - Kunyu Zhang
- School of Chemical Engineering and Technology, Tianjin University, China
| | - Muniyasamy Sudhakar
- CSIR Chemical Cluster, Advanced Polymers and Composites Research, Pretoria, South Africa; Dept of Chemistry, Nelson Mandela University, Port Elizabeth, South Africa
| | - A Pugazhendhi
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam
| | - J Jeyakanthan
- Structural Biology and Bio-Computing Lab, Department of Bioinformatics, Alagappa University, Karaikudi 630 004, Tamil Nadu, India
| | - Kumar Ponnuchamy
- Department of Animal Health and Management, Alagappa University, Karaikudi, Tamil Nadu 630003, India
| | - M Govarthanan
- Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea.
| | - A Arun
- Department of Microbiology, Alagappa University, Karaikudi, Tamil Nadu, India.
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Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer synthesis by using 1-pentanol and oleic acid: Process optimization and polymer characterization. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02608-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Gnaim R, Polikovsky M, Unis R, Sheviryov J, Gozin M, Golberg A. Marine bacteria associated with the green seaweed Ulva sp. for the production of polyhydroxyalkanoates. BIORESOURCE TECHNOLOGY 2021; 328:124815. [PMID: 33609888 DOI: 10.1016/j.biortech.2021.124815] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/28/2021] [Accepted: 01/30/2021] [Indexed: 06/12/2023]
Abstract
This work aimed to isolate a series of bacterial strains associated with the green seaweed Ulva sp. and evaluate their capability to manufacture PHA. The effect of the type of supplemented sugars found to be in macroalgae, on the growth and PHA productivity of the strains was studied. Analysis of the 16S rRNA gene sequence of the isolated strains revealed that the PHA-producing bacteria were phylogenetically related to the genus Cobetia, Bacillus, Pseudoaltermonas and Sulfitobacter, which showed high PHA contents among the isolates. The highest PHA content was observed in the case of Cobetia strain, with up to 61% w/w in the presence of mannitol and 12% w/w on Ulva sp. acid hydrolysate as a substrate.
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Affiliation(s)
- Rima Gnaim
- Porter School of Environment and Earth Sciences, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel; The Triangle Regional Research and Development Center, Kfar Qari 30075, Israel.
| | - Mark Polikovsky
- Porter School of Environment and Earth Sciences, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Razan Unis
- The Triangle Regional Research and Development Center, Kfar Qari 30075, Israel
| | - Julia Sheviryov
- Porter School of Environment and Earth Sciences, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Michael Gozin
- School of Chemistry, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel; Tel Aviv University Center for Nanoscience and Nanotechnology, Tel Aviv, Israel; Center for Advanced Combustion Science, Tel Aviv University, Tel Aviv, Israel
| | - Alexander Golberg
- Porter School of Environment and Earth Sciences, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
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Obulisamy PK, Mehariya S. Polyhydroxyalkanoates from extremophiles: A review. BIORESOURCE TECHNOLOGY 2021; 325:124653. [PMID: 33465644 DOI: 10.1016/j.biortech.2020.124653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/27/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
Polyhydroxyalkanoates (PHAs) are group monomers/heteropolymers that are biodegradable and widely used in biomedical applications. They are considered as alternatives to fossil derived polymers and accumulated by microbes including extremophilic archaea as energy storage inclusions under nutrient limitations. The use of extremophilic archaea for PHA production is an economically viable option for conventional aerobic processes, but less is known about their pathways and PHA accumulation capacities. This review summarized: (a) specific adaptive mechanisms towards extreme environments by extremophiles and specific role of PHAs; (b) understanding of PHA synthesis/metabolism in archaea and specific functional genes; (c) genetic engineering and process engineering approaches required for high-rate PHA production using extremophilic archaea. To conclude, the future studies are suggested to understand the membrane lipids and PHAs accumulation to explain the adaptation mechanism of extremophiles and exploiting it for commercial production of PHAs.
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Affiliation(s)
| | - Sanjeet Mehariya
- Department of Engineering, University of Campania "Luigi Vanvitelli", Real Casa dell'Annunziata, Italy
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Ganesh Saratale R, Cho SK, Dattatraya Saratale G, Kadam AA, Ghodake GS, Kumar M, Naresh Bharagava R, Kumar G, Su Kim D, Mulla SI, Seung Shin H. A comprehensive overview and recent advances on polyhydroxyalkanoates (PHA) production using various organic waste streams. BIORESOURCE TECHNOLOGY 2021; 325:124685. [PMID: 33508681 DOI: 10.1016/j.biortech.2021.124685] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/03/2021] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Polyhydroxyalkanoates (PHA) are appealing as an important alternative to replace synthetic plastics owing to its comparable physicochemical properties to that of synthetic plastics, and biodegradable and biocompatible nature. This review gives an inclusive overview of the current research activities dealing with PHA production by utilizing different waste fluxes generated from food, milk and sugar processing industries. Valorization of these waste fluxes makes the process cost effective and practically applicable. Recent advances in the approaches adopted for waste treatment, fermentation strategies, and genetic engineering can give insights to the researchers for future direction of waste to bioplastics production. Lastly, synthesis and application of PHA-nanocomposites, research and development challenges, future perspectives for sustainable and cost-effective PHB production are also discussed. In addition, the review addresses the useful information about the opportunities and confines associated with the sustainable PHA production using different waste streams and their evaluation for commercial implementation within a biorefinery.
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Affiliation(s)
- Rijuta Ganesh Saratale
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea
| | - Si-Kyung Cho
- Department of Biological and Environmental Science, Dongguk University, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea.
| | - Avinash A Kadam
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea
| | - Gajanan S Ghodake
- Department of Biological and Environmental Science, Dongguk University, Ilsandong-gu, Goyang-si, Gyonggido 10326, Republic of Korea
| | - Manu Kumar
- Department of Life Science, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Republic of Korea
| | - Ram Naresh Bharagava
- Department of Microbiology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar, Raebareli Road, Lucknow 226 025, U.P., India
| | - Gopalakrishnan Kumar
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Dong Su Kim
- Department of Environmental Science and Engineering, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Sikandar I Mulla
- Department of Biochemistry, School of Applied Sciences, REVA University, Bangalore 560 064, India
| | - Han Seung Shin
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea
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Haloarchaea as Cell Factories to Produce Bioplastics. Mar Drugs 2021; 19:md19030159. [PMID: 33803653 PMCID: PMC8003077 DOI: 10.3390/md19030159] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/03/2021] [Accepted: 03/16/2021] [Indexed: 11/16/2022] Open
Abstract
Plastic pollution is a worldwide concern causing the death of animals (mainly aquatic fauna) and environmental deterioration. Plastic recycling is, in most cases, difficult or even impossible. For this reason, new research lines are emerging to identify highly biodegradable bioplastics or plastic formulations that are more environmentally friendly than current ones. In this context, microbes, capable of synthesizing bioplastics, were revealed to be good models to design strategies in which microorganisms can be used as cell factories. Recently, special interest has been paid to haloarchaea due to the capability of some species to produce significant concentrations of polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), and polyhydroxyvalerate (PHV) when growing under a specific nutritional status. The growth of those microorganisms at the pilot or industrial scale offers several advantages compared to that of other microbes that are bioplastic producers. This review summarizes the state of the art of bioplastic production and the most recent findings regarding the production of bioplastics by halophilic microorganisms with special emphasis on haloarchaea. Some protocols to produce/analyze bioplastics are highlighted here to shed light on the potential use of haloarchaea at the industrial scale to produce valuable products, thus minimizing environmental pollution by plastics made from petroleum.
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Wang K, Zhang R. Production of Polyhydroxyalkanoates (PHA) by Haloferax mediterranei from Food Waste Derived Nutrients for Biodegradable Plastic Applications. J Microbiol Biotechnol 2021; 31:338-347. [PMID: 33203825 PMCID: PMC9706037 DOI: 10.4014/jmb.2008.08057] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022]
Abstract
Polyhydroxyalkanoates (PHA) are a family of microbial polyesters that are used as biodegradable plastics in replacement of conventional plastics for various applications. However, the high production cost is the barrier for PHA market expansion. This study aimed to utilize food waste as low-cost feedstock to produce poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) by Haloferax mediterranei. The effects of acetate (Ac), propionate (Pr), butyrate (Bu), and the short-chain carboxylates derived from food waste were examined on the microbial growth and PHBV production. Results showed that a mixture of carboxylates provided a 55% higher PHBV yield than glucose. The food-waste-derived nutrients achieved the yields of 0.41 to 0.54 g PHBV/g Ac from initial loadings of 450 mg/l to 1,800 mg/l Ac of total carboxylates. And the consumption of individual carboxylate varied between different compositions of the carbon source. The present study demonstrates the potential of using food waste as feedstock to produce PHBV by Haloferax mediterranei, which can provide economic benefits to the current PHA industry. Meanwhile, it will also help promote organic waste reduction in landfills and waste management in general.
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Affiliation(s)
- Ke Wang
- Biological and Agricultural Engineering Department, University of California Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Ruihong Zhang
- Biological and Agricultural Engineering Department, University of California Davis, One Shields Avenue, Davis, CA 95616, USA,Corresponding author Phone: +1-530-754-9530 Fax: +1-530-752-2640 E-mail:
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Kee SH, Chiongson JBV, Saludes JP, Vigneswari S, Ramakrishna S, Bhubalan K. Bioconversion of agro-industry sourced biowaste into biomaterials via microbial factories - A viable domain of circular economy. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 271:116311. [PMID: 33383425 DOI: 10.1016/j.envpol.2020.116311] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/25/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
Global increase in demand for food supply has resulted in surplus generation of wastes. What was once considered wastes, has now become a resource. Studies were carried out on the conversion of biowastes into wealth using methods such as extraction, incineration and microbial intervention. Agro-industry biowastes are promising sources of carbon for microbial fermentation to be transformed into value-added products. In the era of circular economy, the goal is to establish an economic system which aims to eliminate waste and ensure continual use of resources in a close-loop cycle. Biowaste collection is technically and economically practicable, hence it serves as a renewable carbon feedstock. Biowastes are commonly biotransformed into value-added materials such as bioethanol, bioplastics, biofuels, biohydrogen, biobutanol and biogas. This review reveals the recent developments on microbial transformation of biowastes into biotechnologically important products. This approach addresses measures taken globally to valorize waste to achieve low carbon economy. The sustainable use of these renewable resources is a positive approach towards waste management and promoting circular economy.
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Affiliation(s)
- Seng Hon Kee
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Justin Brian V Chiongson
- Department of Chemistry, College of Liberal Arts, Sciences, and Education, University of San Agustin, Iloilo City, Philippines
| | - Jonel P Saludes
- Department of Chemistry, College of Liberal Arts, Sciences, and Education, University of San Agustin, Iloilo City, Philippines; Center for Natural Drug Discovery and Development (CND3), University of San Agustin, Iloilo City, Philippines; Balik Scientist Program, Philippine Council for Health Research and Development, Department of Science and Technology, Taguig, Philippines
| | - Sevakumaran Vigneswari
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore, 117581, Singapore
| | - Kesaven Bhubalan
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia; Institute of Marine Biotechnology, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia; Malaysian Institute of Pharmaceuticals and Nutraceuticals, National Institutes of Biotechnology Malaysia, 11700, Penang, Malaysia.
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Mohandas SP, Balan L, Gopi J, Anoop BS, Mohan P S, Philip R, Cubelio SS, Singh ISB. Biocompatibility of polyhydroxybutyrate-co-hydroxyvalerate films generated from Bacillus cereus MCCB 281 for medical applications. Int J Biol Macromol 2021; 176:244-252. [PMID: 33548322 DOI: 10.1016/j.ijbiomac.2021.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 01/31/2021] [Accepted: 02/01/2021] [Indexed: 01/13/2023]
Abstract
Polyhydroxyalkanoates (PHAs) are natural polyesters produced by microorganisms as a source of intracellular energy reserves. These polymers have been extensively studied for tissue engineering and drug delivery applications due to their desirable material properties. Solvent-cast film of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), produced by Bacillus cereus MCCB 281 was characterized to study the surface morphology, roughness, thermal and mechanical properties. PHBV films were slightly hydrophilic with an average surface roughness of 43.66 nm. In vitro cell viability and proliferation studies on PHBV film surface investigated using L929 fibroblasts showed good cell attachment and proliferation. Hemocompatibility of PHBV evaluated by hemolysis assay, in vitro platelet adhesion and coagulation assays demonstrated good blood compatibility for use as blood contact graft materials. Therefore, PHBV produced from the marine bacterium favoured cellular growth of L929 fibroblasts indicating its potential to be used as a biomaterial substrate for cell adhesion in tissue engineering and medical applications.
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Affiliation(s)
- Sowmya P Mohandas
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, India
| | - Linu Balan
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, India
| | - Jayanath Gopi
- Dept. of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, India
| | - B S Anoop
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, India
| | - Sooraj Mohan P
- Department of Environmental Engineering, National I-Lan University, Taiwan
| | - Rosamma Philip
- Dept. of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, India
| | | | - I S Bright Singh
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Fine Arts Avenue, Kochi, Kerala, India.
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