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Sobolewska E, Borowski S, Kręgiel D. Cultivation of yeasts on liquid digestate to remove organic pollutants and nutrients and for potential application as co-culture with microalgae. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 362:121351. [PMID: 38838535 DOI: 10.1016/j.jenvman.2024.121351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/08/2024] [Accepted: 05/30/2024] [Indexed: 06/07/2024]
Abstract
In this study, the growth of yeast and yeast-like fungi in the liquid digestate from vegetable wastes was investigated in order to remove nutrients and organic pollutants, and for their application as co-culture members with green microalgae. The studied yeast strains were characterized for their assimilative and enzymatic profiles as well as temperature requirements. In the first experimental stage, the growth dynamics of each strain were determined, allowing to select the best yeasts for further studies. In the subsequent stage, the ability of selectants to remove organic pollutants was assessed. Different cultivation media containing respectively 1:3, 1:1, 3:1 vol ratio of liquid digestate and the basal minimal medium were used. Among all tested yeast strains, Rhodotorula mucilaginosa DSM 70825 showed the most promising results, demonstrating the highest potential for removing organic substrates and nutrients. Depending on the medium, this strain achieved 50-80% sCOD, 45-60% tVFAs, 21-45% TN, 33-52% PO43- reduction rates. Similar results were obtained for the strain Candida sp. OR687571. The high nutrient and organics removal efficiency by these yeasts could likely be linked to their ability to assimilate xylose (being the main source of carbon in the liquid digestate). In culture media containing liquid digestate, both yeast strains achieved good viability and proliferation potential. In the liquid digestate medium, R. mucilaginosa and Candida sp. showed vitality at the level of 51.5% and 45.0%, respectively. These strains seem to be a good starting material for developing effective digestate treatment strategies involving monocultures and/or consortia with other yeasts or green microalgae.
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Affiliation(s)
- Ewelina Sobolewska
- Department of Environmental Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Wólczańska 171/173, 90-530, Lodz, Poland; Interdisciplinary Doctoral School, Lodz University of Technology, Żeromskiego 116, 90-924, Lodz, Poland.
| | - Sebastian Borowski
- Department of Environmental Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Wólczańska 171/173, 90-530, Lodz, Poland.
| | - Dorota Kręgiel
- Department of Environmental Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Wólczańska 171/173, 90-530, Lodz, Poland.
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Timotheo CA, Fabricio MF, Ayub MAZ, Valente P. Evaluation of cell disruption methods in the oleaginous yeasts Yarrowia lipolytica QU21 and Meyerozyma guilliermondii BI281A for microbial oil extraction. AN ACAD BRAS CIENC 2023; 95:e20191256. [PMID: 38055604 DOI: 10.1590/0001-3765202320191256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 03/09/2020] [Indexed: 12/08/2023] Open
Abstract
The interest for oleaginous yeasts has grown significantly in the last three decades, mainly due to their potential use as a renewable source of microbial oil or single cell oils (SCOs). However, the methodologies for cell disruption to obtain the microbial oil are considered critical and determinant for a large-scale production. Therefore, this work aimed to evaluate different methods for cell wall disruption for the lipid extraction of Yarrowia lipolytica QU21 and Meyerozyma guilliermondii BI281A. The two strains were separately cultivated in 5 L batch fermenters for 120 hours, at 26 ºC and 400 rpm. Three different lipid extraction processes using Turrax homogenizer, Ultrasonicator and Braun homogenizer combined with bead milling were applied in wet, oven-dried, and freeze-dried biomass of both strains. The treatment with the highest percentage of disrupted cells and highest oil yield was the ultrasonication of oven-dried biomass (37-40% lipid content for both strains). The fact that our results point to one best extraction strategy for two different yeast strains, belonging to different species, is a great news towards the development of a unified technique that could be applied at industrial plants.
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Affiliation(s)
- Carina A Timotheo
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Departamento de Microbiologia, Imunologia e Parasitologia, Laboratório de Micologia, Rua Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
| | - Mariana F Fabricio
- Universidade Federal do Rio Grande do Sul, Instituto de Ciência e Tecnologia, Laboratório de Biotecnologia e Engenharia Bioquímica, Av. Bento Gonçalves, 9500, 91501-970 Porto Alegre, RS, Brazil
| | - Marco Antônio Z Ayub
- Universidade Federal do Rio Grande do Sul, Instituto de Ciência e Tecnologia, Laboratório de Biotecnologia e Engenharia Bioquímica, Av. Bento Gonçalves, 9500, 91501-970 Porto Alegre, RS, Brazil
| | - Patricia Valente
- Universidade Federal do Rio Grande do Sul, Instituto de Ciências Básicas da Saúde, Departamento de Microbiologia, Imunologia e Parasitologia, Laboratório de Micologia, Rua Sarmento Leite, 500, 90050-170 Porto Alegre, RS, Brazil
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Correa-Galeote D, Argiz L, Mosquera-Corral A, Del Rio AV, Juárez-Jiménez B, González-López J, Rodelas B. Structure of fungal communities in sequencing batch reactors operated at different salinities for the selection of triacylglyceride-producers from a fish-canning lipid-rich waste stream. N Biotechnol 2022; 71:47-55. [PMID: 35931375 DOI: 10.1016/j.nbt.2022.08.001] [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: 09/24/2021] [Revised: 07/30/2022] [Accepted: 08/01/2022] [Indexed: 12/01/2022]
Abstract
Oleaginous fungi natively accumulate large amounts of triacylglycerides (TAG), widely used as precursors for sustainable biodiesel production. However, little attention has been paid to the diversity and roles of fungal mixed microbial cultures (MMCs) in sequencing batch reactors (SBR). In this study, a lipid-rich stream produced in the fish-canning industry was used as a substrate in two laboratory-scale SBRs operated under the feast/famine (F/F) regime to enrich microorganisms with high TAG-storage ability, under two different concentrations of NaCl (SBR-N: 0.5g/L; SBR-S: 10g/L). The size of the fungal community in the enriched activated sludge (EAS) was analyzed using 18S rRNA-based qPCR, and the fungal community structure was determined by Illumina sequencing. The different selective pressures (feeding strategy and control of pH) implemented in the enrichment SBRs throughout operation increased the abundance of total fungi. In general, there was an enrichment of genera previously identified as TAG-accumulating fungi (Apiotrichum, Candida, Cutaneotrichosporon, Geotrichum, Haglerozyma, Metarhizium, Mortierella, Saccharomycopsis, and Yarrowia) in both SBRs. However, the observed increase of their relative abundances throughout operation was not significantly linked to a higher TAG accumulation.
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Affiliation(s)
- David Correa-Galeote
- Microbiology Department, Faculty of Pharmacy, University of Granada, 18001 Granada, Andalucía, Spain; Microbiology and Environmental technology section, Microbiology Department, Faculty of Pharmacy, University of Granada, 18011 Granada, Andalucía, Spain.
| | - Lucía Argiz
- CRETUS Institute, Department of Chemical Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - Anuska Mosquera-Corral
- CRETUS Institute, Department of Chemical Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - Angeles Val Del Rio
- CRETUS Institute, Department of Chemical Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - Belen Juárez-Jiménez
- Microbiology Department, Faculty of Pharmacy, University of Granada, 18001 Granada, Andalucía, Spain; Microbiology and Environmental technology section, Microbiology Department, Faculty of Pharmacy, University of Granada, 18011 Granada, Andalucía, Spain
| | - Jesús González-López
- Microbiology Department, Faculty of Pharmacy, University of Granada, 18001 Granada, Andalucía, Spain; Microbiology and Environmental technology section, Microbiology Department, Faculty of Pharmacy, University of Granada, 18011 Granada, Andalucía, Spain
| | - Belen Rodelas
- Microbiology Department, Faculty of Pharmacy, University of Granada, 18001 Granada, Andalucía, Spain; Microbiology and Environmental technology section, Microbiology Department, Faculty of Pharmacy, University of Granada, 18011 Granada, Andalucía, Spain
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Phosphorus and Nitrogen Limitation as a Part of the Strategy to Stimulate Microbial Lipid Biosynthesis. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112411819] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Microbial lipids called a sustainable alternative to traditional vegetable oils invariably capture the attention of researchers. In this study, the effect of limiting inorganic phosphorus (KH2PO4) and nitrogen ((NH4)2SO4) sources in lipid-rich culture medium on the efficiency of cellular lipid biosynthesis by Y. lipolytica yeast has been investigated. In batch cultures, the carbon source was rapeseed waste post-frying oil (50 g/dm3). A significant relationship between the concentration of KH2PO4 and the amount of lipids accumulated has been revealed. In the shake-flask cultures, storage lipid yield was correlated with lower doses of phosphorus source in the medium. In bioreactor culture in mineral medium with (g/dm3) 3.0 KH2PO4 and 3.0 (NH4)2SO4, the cellular lipid yield was 47.5% (w/w). Simultaneous limitation of both phosphorus and nitrogen sources promoted lipid accumulation in cells, but at the same time created unfavorable conditions for biomass growth (0.78 gd.m./dm3). Increased phosphorus availability with limited cellular access to nitrogen resulted in higher biomass yields (7.45 gd.m./dm3) than phosphorus limitation in a nitrogen-rich medium (4.56 gd.m./dm3), with comparable lipid yields (30% and 32%). Regardless of the medium composition, the yeast preferentially accumulated oleic and linoleic acids as well as linolenic acid up to 8.89%. Further, it is crucial to determine the correlation between N/P molar ratios, biomass growth and efficient lipid accumulation. In particular, considering the contribution of phosphorus as a component of coenzymes in many metabolic pathways, including lipid biosynthesis and respiration processes, its importance as a factor in the cultivation of the oleaginous microorganisms was highlighted.
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Watsuntorn W, Chuengcharoenphanich N, Niltaya P, Butkumchote C, Theerachat M, Glinwong C, Qi W, Wang Z, Chulalaksananukul W. A novel oleaginous yeast Saccharomyces cerevisiae CU-TPD4 for lipid and biodiesel production. CHEMOSPHERE 2021; 280:130782. [PMID: 34162092 DOI: 10.1016/j.chemosphere.2021.130782] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 04/22/2021] [Accepted: 04/28/2021] [Indexed: 06/08/2023]
Abstract
This study reports on the novel Saccharomyces cerevisiae CU-TPD4 that was isolated from coconut waste residues obtained from a coconut factory in Thailand. The CU-TPD4 isolate was confirmed to be a S. cerevisiae by molecular analysis and to be an oleaginous yeast with more than 20% (w/w) of the cell dry weight (CDW) present in the form of lipids. The lipid content and lipid yield of CU-TPD4 (52.96 ± 1.15% of CDW and 1.78 ± 0.06 g/L, respectively) under optimized growth conditions were much higher than those under normal growth conditions (22.65 ± 1.32% of CDW and 1.24 ± 0.12 g/L, respectively). The major fatty acids produced by CU-TPD4 were oleic (C18:1), palmitoleic (C16:1), stearic (C18:0), and palmitic (C16:0) acids. Mathematical estimation of the physical properties of the biodiesel obtained by transesterification of the extracted lipid suggested it was suitable as biodiesel with respect to the ASTM D6751 and EN 14214 international standards. Consequently, S. cerevisiae CU-TPD4 is expected to emerge as a promising alternative for biodiesel production.
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Affiliation(s)
- Wannapawn Watsuntorn
- Biofuels by Biocatalysts Research Unit, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Nuttha Chuengcharoenphanich
- Biofuels by Biocatalysts Research Unit, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Poompat Niltaya
- Biofuels by Biocatalysts Research Unit, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Cheryanus Butkumchote
- Biofuels by Biocatalysts Research Unit, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Monnat Theerachat
- Biofuels by Biocatalysts Research Unit, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chompunuch Glinwong
- Biofuels by Biocatalysts Research Unit, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Wei Qi
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Zhongming Wang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Warawut Chulalaksananukul
- Biofuels by Biocatalysts Research Unit, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
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Kruger JS, Knoshaug EP, Dong T, Hull TC, Pienkos PT. Catalytic Hydroprocessing of Single-Cell Oils to Hydrocarbon Fuels : Converting microbial lipids to fuels is a promising approach to replace fossil fuels. JOHNSON MATTHEY TECHNOLOGY REVIEW 2021. [DOI: 10.1595/205651321x16024905831259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Microbial lipids hold great promise as biofuel precursors, and research efforts to convert such lipids to renewable diesel fuels have been increasing in recent years. In contrast to the numerous literature reviews on growing, characterising and extracting lipids from oleaginous microbes,
and on converting vegetable oils to hydrocarbon fuels, this review aims to provide insight into aspects that are specific to hydroprocessing microbial lipids. While standard hydrotreating catalysts generally perform well with terrestrial oils, differences in lipid speciation and the presence
of co-extracted compounds, such as chlorophyll and sterols, introduce additional complexities into the process for microbial lipids. Lipid cleanup steps can be introduced to produce suitable feedstocks for catalytic upgrading.
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Affiliation(s)
- Jacob S. Kruger
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory 15013 Denver West Parkway, Golden, CO 80401 USA
| | - Eric P. Knoshaug
- Bioscience Center, National Renewable Energy Laboratory 15013 Denver West Parkway, Golden, CO 80401 USA
| | - Tao Dong
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory 15013 Denver West Parkway, Golden, CO 80401 USA
| | - Tobias C. Hull
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory 15013 Denver West Parkway, Golden, CO 80401 USA
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Mhlongo SI, Ezeokoli OT, Roopnarain A, Ndaba B, Sekoai PT, Habimana O, Pohl CH. The Potential of Single-Cell Oils Derived From Filamentous Fungi as Alternative Feedstock Sources for Biodiesel Production. Front Microbiol 2021; 12:637381. [PMID: 33584636 PMCID: PMC7876240 DOI: 10.3389/fmicb.2021.637381] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/07/2021] [Indexed: 11/13/2022] Open
Abstract
Microbial lipids, also known as single-cell oils (SCOs), are highly attractive feedstocks for biodiesel production due to their fast production rates, minimal labor requirements, independence from seasonal and climatic changes, and ease of scale-up for industrial processing. Among the SCO producers, the less explored filamentous fungi (molds) exhibit desirable features such as a repertoire of hydrolyzing enzymes and a unique pellet morphology that facilitates downstream harvesting. Although several oleaginous filamentous fungi have been identified and explored for SCO production, high production costs and technical difficulties still make the process less attractive compared to conventional lipid sources for biodiesel production. This review aims to highlight the ability of filamentous fungi to hydrolyze various organic wastes for SCO production and explore current strategies to enhance the efficiency and cost-effectiveness of the SCO production and recovery process. The review also highlights the mechanisms and components governing lipogenic pathways, which can inform the rational designs of processing conditions and metabolic engineering efforts for increasing the quality and accumulation of lipids in filamentous fungi. Furthermore, we describe other process integration strategies such as the co-production with hydrogen using advanced fermentation processes as a step toward a biorefinery process. These innovative approaches allow for integrating upstream and downstream processing units, thus resulting in an efficient and cost-effective method of simultaneous SCO production and utilization for biodiesel production.
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Affiliation(s)
- Sizwe I. Mhlongo
- Discipline of Medical Microbiology, School of Laboratory Medicine and Medical Sciences, Medical School, University of KwaZulu-Natal, Durban, South Africa
| | - Obinna T. Ezeokoli
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, Bloemfontein, South Africa
| | - Ashira Roopnarain
- Microbiology and Environmental Biotechnology Research Group, Institute for Soil, Climate and Water, Agricultural Research Council, Pretoria, South Africa
| | - Busiswa Ndaba
- Microbiology and Environmental Biotechnology Research Group, Institute for Soil, Climate and Water, Agricultural Research Council, Pretoria, South Africa
| | - Patrick T. Sekoai
- The School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Olivier Habimana
- The School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Carolina H. Pohl
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, Bloemfontein, South Africa
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Kumar KK, Deeba F, Negi YS, Gaur NA. Harnessing pongamia shell hydrolysate for triacylglycerol agglomeration by novel oleaginous yeast Rhodotorula pacifica INDKK. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:175. [PMID: 33088345 PMCID: PMC7574204 DOI: 10.1186/s13068-020-01814-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND To meet the present transportation demands and solve food versus fuel issue, microbial lipid-derived biofuels are gaining attention worldwide. This study is focussed on high-throughput screening of oleaginous yeast by microwave-aided Nile red spectrofluorimetry and exploring pongamia shell hydrolysate (PSH) as a feedstock for lipid production using novel oleaginous yeast Rhodotorula pacifica INDKK. RESULTS A new oleaginous yeast R. pacifica INDKK was identified and selected for microbial lipid production. R. pacifica INDKK produced maximum 12.8 ± 0.66 g/L of dry cell weight and 6.78 ± 0.4 g/L of lipid titre after 120 h of growth, showed high tolerance to pre-treatment-derived inhibitors such as 5-hydroxymethyl furfural (5-HMF), (2 g/L), furfural (0.5 g/L) and acetic acid (0.5 g/L), and ability to assimilate C3, C5 and C6 sugars. Interestingly, R. pacifica INDKK showed higher lipid accumulation when grown in alkali-treated saccharified PSH (AS-PSH) (0.058 ± 0.006 g/L/h) as compared to acid-treated detoxified PSH (AD-PSH) (0.037 ± 0.006 g/L/h) and YNB medium (0.055 ± 0.003 g/L/h). The major fatty acid constituents are oleic, palmitic, linoleic and linolenic acids with an estimated cetane number (CN) of about 56.7, indicating the good quality of fuel. CONCLUSION These results suggested that PSH and R. pacifica INDKK could be considered as potential feedstock for sustainable biodiesel production.
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Affiliation(s)
- Kukkala Kiran Kumar
- International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, 110067 India
| | - Farha Deeba
- International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, 110067 India
| | - Yuvraj Singh Negi
- Department of Polymer & Process Engineering, Indian Institute of Technology Roorkee, Uttarakhand, 247667 India
| | - Naseem A. Gaur
- International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, 110067 India
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Valorization of Biodiesel Byproduct Crude Glycerol for the Production of Bioenergy and Biochemicals. Catalysts 2020. [DOI: 10.3390/catal10060609] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The rapid growth of global biodiesel production requires simultaneous effective utilization of glycerol obtained as a by-product of the transesterification process. Accumulation of the byproduct glycerol from biodiesel industries can lead to considerable environment issues. Hence, there is extensive research focus on the transformation of crude glycerol into value-added products. This paper makes an overview of the nature of crude glycerol and ongoing research on its conversion to value-added products. Both chemical and biological routes of glycerol valorization will be presented. Details of crude glycerol conversion into microbial lipid and subsequent products will also be highlighted.
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Potential applications of extracellular enzymes from Streptomyces spp. in various industries. Arch Microbiol 2020; 202:1597-1615. [PMID: 32451592 DOI: 10.1007/s00203-020-01898-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 04/14/2020] [Accepted: 05/11/2020] [Indexed: 01/21/2023]
Abstract
Extracellular enzymes produced from Streptomyces have the potential to replace toxic chemicals that are being used in various industries. The endorsement of this replacement has not received a better platform in developing countries. In this review, we have discussed the impact of chemicals and conventional practices on environmental health, and the role of extracellular enzymes to replace these practices. Burning of fossil fuels and agriculture residue is a global issue, but the production of biofuel using extracellular enzymes may be the single key to solve all these issues. We have discussed the replacement of hazardous chemicals with the use of xylanase, cellulase, and pectinase in food industries. In paper industries, delignification was done by the chemical treatment, but xylanase and laccase have the efficient potential to remove the lignin from pulp. In textile industries, the conventional method includes the chemicals which affect the nervous system and other organs. The use of xylanase, cellulase, and pectinase in different processes can give a safe and environment-friendly option to textile industries. Hazardous chemical pesticides can be replaced by the use of chitinase as an insecticide and fungicide in agricultural practices.
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Tassoni A, Tedeschi T, Zurlini C, Cigognini IM, Petrusan JI, Rodríguez Ó, Neri S, Celli A, Sisti L, Cinelli P, Signori F, Tsatsos G, Bondi M, Verstringe S, Bruggerman G, Corvini PFX. State-of-the-Art Production Chains for Peas, Beans and Chickpeas-Valorization of Agro-Industrial Residues and Applications of Derived Extracts. Molecules 2020; 25:E1383. [PMID: 32197427 PMCID: PMC7144388 DOI: 10.3390/molecules25061383] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/10/2020] [Accepted: 03/17/2020] [Indexed: 11/25/2022] Open
Abstract
The world is confronted with the depletion of natural resources due to their unsustainable use and the increasing size of populations. In this context, the efficient use of by-products, residues and wastes generated from agro-industrial and food processing opens the perspective for a wide range of benefits. In particular, legume residues are produced yearly in very large amounts and may represent an interesting source of plant proteins that contribute to satisfying the steadily increasing global protein demand. Innovative biorefinery extraction cascades may also enable the recovery of further bioactive molecules and fibers from these insufficiently tapped biomass streams. This review article gives a summary of the potential for the valorization of legume residual streams resulting from agro-industrial processing and more particularly for pea, green bean and chickpea by-products/wastes. Valuable information on the annual production volumes, geographical origin and state-of-the-art technologies for the extraction of proteins, fibers and other bioactive molecules from this source of biomass, is exhaustively listed and discussed. Finally, promising applications, already using the recovered fractions from pea, bean and chickpea residues for the formulation of feed, food, cosmetic and packaging products, are listed and discussed.
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Affiliation(s)
- Annalisa Tassoni
- Department of Biological Geological and Environmental Sciences, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy
| | - Tullia Tedeschi
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy;
| | - Chiara Zurlini
- Experimental Station for Food Preservation Industry, Viale F. Tanara, 31/A, 43121 Parma, Italy; (C.Z.); (I.M.C.)
| | - Ilaria Maria Cigognini
- Experimental Station for Food Preservation Industry, Viale F. Tanara, 31/A, 43121 Parma, Italy; (C.Z.); (I.M.C.)
| | - Janos-Istvan Petrusan
- Institut für Getreideverarbeitung GmbH, Arthur-Scheunert Allee 40/41, 14558 Nuthetal, Germany;
| | - Óscar Rodríguez
- IRIS Technology Group, Avda. C. F. Gauss 11, 08860 Castelldefels, Spain (S.N.)
| | - Simona Neri
- IRIS Technology Group, Avda. C. F. Gauss 11, 08860 Castelldefels, Spain (S.N.)
| | - Annamaria Celli
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40138 Bologna, Italy; (A.C.); (L.S.)
| | - Laura Sisti
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40138 Bologna, Italy; (A.C.); (L.S.)
| | - Patrizia Cinelli
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino 2, 56126 Pisa, Italy; (P.C.); (F.S.)
- National Interuniversity Consortium of Materials Science and Technology, Via G. Giusti 9, 50121 Firenze, Italy
| | - Francesca Signori
- Department of Civil and Industrial Engineering, University of Pisa, Largo Lucio Lazzarino 2, 56126 Pisa, Italy; (P.C.); (F.S.)
- National Interuniversity Consortium of Materials Science and Technology, Via G. Giusti 9, 50121 Firenze, Italy
| | - Georgios Tsatsos
- Cosmetic Tsatsos Georgios, Ioannou Metaxa 56, 19441 Koropi, Greece;
| | - Marika Bondi
- Conserve Italia Scarl, Via Paolo Poggi 11, 40068 San Lazzaro di Savena (BO), Italy;
| | - Stefanie Verstringe
- Nutritional Solutions Division, Nutrition Sciences NV, Booiebos 5, 9031 Drongen, Belgium; (S.V.); (G.B.)
| | - Geert Bruggerman
- Nutritional Solutions Division, Nutrition Sciences NV, Booiebos 5, 9031 Drongen, Belgium; (S.V.); (G.B.)
| | - Philippe F. X. Corvini
- Institute for Ecopreneurship, School of Life Sciences, Fachhochschule Nordwestschweiz, Hofackerstrasse 30, CH-4132 Muttenz, Switzerland;
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Efficient xylose utilization leads to highest lipid productivity in Candida tropicalis SY005 among six yeast strains grown in mixed sugar medium. Appl Microbiol Biotechnol 2020; 104:3133-3144. [PMID: 32076780 DOI: 10.1007/s00253-020-10443-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 01/29/2020] [Accepted: 02/06/2020] [Indexed: 02/07/2023]
Abstract
Six local isolates of yeasts were screened for cell mass and lipid production in mixed glucose and xylose medium. Candida tropicalis SY005 and Trichosporon (Apiotrichum) loubieri SY006 showed significant lipid accumulation of 24.6% and 32% (dry cell weight), respectively when grown in medium containing equal mass of both the sugars. SY005 produced relatively higher cell mass of 9.66 gL-1 due to higher rate of sugar consumption, which raised the lipid productivity of the organism to 0.792 gL-1day-1 as compared to 0.446 gL-1day-1 in SY006. When grown with each sugar separately, the xylose consumption rate of SY005 was found to be 0.55 gL-1 h-1 after 4 days as compared to 0.52 gL-1 h-1 for SY006. Transcript expression of the high affinity xylose transporter (Cthaxt), xylose reductase (Ctxyl1), and xylitol dehydrogenase (Ctxyl2) of SY005 was monitored to unravel such high rate of sugar consumption. Expression of all the three genes was observed to vary in mixed sugars with Cthaxt exhibiting the highest expression in presence of only xylose. Expression levels of both Ctxyl1 and Ctxyl2, involved in xylose catabolism, were maximum during 24-48 h of growth, indicating that xylose utilization started in the presence of glucose, which was depleted in the medium after 96 h. Together, the present study documents that C. tropicalis SY005 consumes xylose concomitant to glucose during early period of growth, and it is a promising yeast strain for viable production of storage lipid or other high-value oleochemicals utilizing lignocellulose hydrolysate.
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Engineering Yarrowia lipolytica towards food waste bioremediation: Production of fatty acid ethyl esters from vegetable cooking oil. J Biosci Bioeng 2020; 129:31-40. [DOI: 10.1016/j.jbiosc.2019.06.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 06/06/2019] [Accepted: 06/12/2019] [Indexed: 11/22/2022]
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14
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Rasmey A, Tawfik M, Abdel‐Kareem M. Direct transesterification of fatty acids produced by
Fusarium solani
for biodiesel production: effect of carbon and nitrogen on lipid accumulation in the fungal biomass. J Appl Microbiol 2019; 128:1074-1085. [DOI: 10.1111/jam.14540] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/21/2019] [Accepted: 11/25/2019] [Indexed: 12/18/2022]
Affiliation(s)
- A.‐H.M. Rasmey
- Botany and Microbiology Department Faculty of Science Suez University Suez Egypt
| | - M.A. Tawfik
- Botany and Microbiology Department Faculty of Science Suez University Suez Egypt
| | - M.M. Abdel‐Kareem
- Botany and Microbiology Department Faculty of Science Sohag University Sohag Egypt
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15
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Russmayer H, Egermeier M, Kalemasi D, Sauer M. Spotlight on biodiversity of microbial cell factories for glycerol conversion. Biotechnol Adv 2019; 37:107395. [DOI: 10.1016/j.biotechadv.2019.05.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 04/28/2019] [Accepted: 05/02/2019] [Indexed: 12/28/2022]
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16
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Utilization of Clarified Butter Sediment Waste as a Feedstock for Cost-Effective Production of Biodiesel. Foods 2019; 8:foods8070234. [PMID: 31261933 PMCID: PMC6678320 DOI: 10.3390/foods8070234] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 02/06/2023] Open
Abstract
The rising demand and cost of fossil fuels (diesel and gasoline), together with the need for sustainable, alternative, and renewable energy sources have increased the interest for biomass-based fuels such as biodiesel. Among renewable sources of biofuels, biodiesel is particularly attractive as it can be used in conventional diesel engines without any modification. Oleaginous yeasts are excellent oil producers that can grow easily on various types of hydrophilic and hydrophobic waste streams that are used as feedstock for single cell oils and subsequently biodiesel production. In this study, cultivation of Rhodosporidium kratochvilovae on a hydrophobic waste (clarified butter sediment waste medium (CBM)) resulted in considerably high lipid accumulation (70.74% w/w). Maximum cell dry weight and total lipid production were 15.52 g/L and 10.98 g/L, respectively, following cultivation in CBM for 144 h. Neutral lipids were found to accumulate in the lipid bodies of cells, as visualized by BODIPY staining and fluorescence microscopy. Cells grown in CBM showed large and dispersed lipid droplets in the intracellular compartment. The fatty acid profile of biodiesel obtained after transesterification was analyzed by gas chromatography-mass spectrometry (GC–MS), while its quality was determined to comply with ASTM 6751 and EN 14214 international standards. Hence, clarified sediment waste can be exploited as a cost-effective renewable feedstock for biodiesel production.
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Tonato D, Luft L, Confortin TC, Zabot GL, Mazutti MA. Enhancement of fatty acids in the oil extracted from the fungus Nigrospora sp. by supercritical CO2 with ethanol as a cosolvent. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2019.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Ananthi V, Siva Prakash G, Mohan Rasu K, Gangadevi K, Boobalan T, Raja R, Anand K, Sudhakar M, Chuturgoon A, Arun A. Comparison of integrated sustainable biodiesel and antibacterial nano silver production by microalgal and yeast isolates. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 186:232-242. [PMID: 30092559 DOI: 10.1016/j.jphotobiol.2018.07.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/14/2018] [Accepted: 07/23/2018] [Indexed: 01/19/2023]
Abstract
Microalgal isolates (Chlorella sp. and Spirulina sp.) and yeast isolates (Candida albicans and Saccharomyces sp.) were employed as the resources of biodiesel production and silver nanoparticle synthesis. The prominent peaks of the FTIR spectrum accustomed the efficient lipid property. The developed profile containing fatty acid methyl ester (FAME) displayed the elevated amount of both saturated (C15:0, C17:0, C21:0) and unsaturated (C17:1, C18:2, C20:4) fatty acids. The physicochemical properties analyzed by using Biodiesel analyzer V1.1.software, confirmed the competency of the isolates for sustainable biodiesel production. Biosynthesis of silvernanoparticles (AgNPs) were accomplished extracellularly by using supernatant of microalgal and yeast culture. The maximum absorbance at 420 and 421 nm under UV-visible spectra showed the presence of nanoparticles. The purity of the synthesized AgNPs were analyzed by XRD analysis. The elemental silver presence was affirmed by EDAX, SEM and AFM, the results revealed spherical crystalline shaped nanoparticles of size ranging from 2.0 to 7.3 nm. The antimicrobial efficacy of the silver nanoparticles (AgNPs) against various clinical pathogens which includes Bacillus sp., E. coli, Klebsiella sp., Proteus sp. and Staphylococcus aureus were observed. However, enhanced antimicrobial activity was displayed by the AgNPs, produced by Candida albicans (12 mm) against Bacillus sp., and E.coli, the nanoparticle produced by Chlorella sp. showed the least antagonistic activity (07 mm).
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Affiliation(s)
- V Ananthi
- Department of Energy Science, Alagappa University, Karaikudi 630003, Tamil Nadu, India; Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India.; Department of Zoology and Microbiology, Thiagarajar College, Madurai, India
| | - G Siva Prakash
- Department of Energy Science, Alagappa University, Karaikudi 630003, Tamil Nadu, India; Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - K Mohan Rasu
- Department of Energy Science, Alagappa University, Karaikudi 630003, Tamil Nadu, India; Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - K Gangadevi
- PG and Research Department of Physics, Thiagarajar College, Madurai, India
| | - T Boobalan
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Rathinam Raja
- Food Science Laboratory, Meditbio, Center for Mediterranean Bioresources and Food Faculty of Sciences and Technology, University of Algarve, Campus de Gambelas, Ed. 88005-139 Faro, Portugal
| | - K Anand
- Discipline of Medical Biochemistry, School of Laboratory of Medicine and Medical Sciences, College of Health Science, University of KwaZulu-Natal, Durban 4013, South Africa
| | - M Sudhakar
- Polymers and Composites, Materials Science and Manufacturing Unit, Council for Scientific and Industrial Research (CSIR), Port Elizabeth 6001, South Africa; Department of Chemistry, Nelson Mandela University, P.O. Box 1600, Port Elizabeth 6000, South Africa.
| | - Anil Chuturgoon
- Discipline of Medical Biochemistry, School of Laboratory of Medicine and Medical Sciences, College of Health Science, University of KwaZulu-Natal, Durban 4013, South Africa
| | - A Arun
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India..
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Qin L, Liu L, Zeng AP, Wei D. From low-cost substrates to Single Cell Oils synthesized by oleaginous yeasts. BIORESOURCE TECHNOLOGY 2017; 245:1507-1519. [PMID: 28642053 DOI: 10.1016/j.biortech.2017.05.163] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 05/24/2017] [Accepted: 05/26/2017] [Indexed: 05/23/2023]
Abstract
As new feedstock for biofuels, microbial oils have received worldwide attentions due to their environmentally-friendly characters. Microbial oil production based on low-cost raw materials is significantly attractive to the current biodiesel refinery industry. In terms of SCOs production, oleaginous yeast has numerous advantages over bacteria, molds and microalgae based on their high growth rate and lipid yield. Numerous efforts have been made on the competitive lipid production combining the use of cheap raw materials as substrates by yeasts. In this paper, we provided an overview of lipid metabolism in yeast cells. New advances using oleaginous yeast as a cell factory for high-value lipid production from various low-cost substrates are also reviewed, and the enhanced strategies based on synergistic effects of oleaginous yeast and microalgae in co-culture are discussed in details.
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Affiliation(s)
- Lei Qin
- School of Food Sciences and Engineering, South China University of Technology, Wushan Rd. 381, Guangzhou 510641, PR China; Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China
| | - Lu Liu
- School of Food Sciences and Engineering, South China University of Technology, Wushan Rd. 381, Guangzhou 510641, PR China
| | - An-Ping Zeng
- Institute of Bioprocess and Biosystems Engineering, Hamburg University of Technology, Denickestr. 15, D-21073 Hamburg, Germany
| | - Dong Wei
- School of Food Sciences and Engineering, South China University of Technology, Wushan Rd. 381, Guangzhou 510641, PR China.
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20
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Filippucci S, Tasselli G, Scardua A, Di Mauro S, Cramarossa MR, Perini D, Turchetti B, Onofri A, Forti L, Buzzini P. Study of Holtermanniella wattica, Leucosporidium creatinivorum, Naganishia adeliensis, Solicoccozyma aeria, and Solicoccozyma terricola for their lipogenic aptitude from different carbon sources. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:259. [PMID: 27933101 PMCID: PMC5126845 DOI: 10.1186/s13068-016-0672-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Accepted: 11/17/2016] [Indexed: 05/08/2023]
Abstract
BACKGROUND The ability of some microorganisms to accumulate lipids is well known; however, only recently the number of studies on microbial lipid biosynthesis for obtaining oleochemical products, namely biofuels and some building blocks for chemistry, is rapidly and spectacularly increased. Since 1990s, some oleaginous yeasts were studied for their ability to accumulate lipids up to 60-70% of their dry weight. Due to the vast array of engineering techniques currently available, the recombinant DNA technology was the main approach followed so far for obtaining lipid-overproducing yeasts, mainly belonging to the Yarrowia lipolytica. However, an alternative approach can be offered by worldwide diversity as source of novel oleaginous yeasts. Lipogenic aptitude of a number of yeast strains has been reviewed, but many of these studies utilized a limited number of species and/or different culture conditions that make impossible the comparison of different results. Accordingly, the lipogenic aptitude inside the yeast world is still far from being fully explored, and finding new oleaginous yeast species can acquire a strategic importance. RESULTS Holtermanniella wattica, Leucosporidium creatinivorum, Naganishia adeliensis, Solicoccozyma aeria, and Solicoccozyma terricola strains were selected as a result of a large-scale screening on 706 yeasts (both Ascomycota and Basidiomycota). Lipid yields and fatty acid profiles of selected strains were evaluated at 20 and 25 °C on glucose, and on glycerol, xylose, galactose, sucrose, maltose, and cellobiose. A variable fatty acid profile was observed in dependence of both temperature and different carbon sources. On the whole, L. creatinivorum exhibited the highest performances: total lipid yield (YL) >7 g/l on glucose and glycerol, % of intracellular lipids on cell biomass (YL/DW) >70% at 20 °C on glucose, lipid coefficient (YL/Glu) around 20% on glucose, and daily productivity (YL/d) on glucose and sucrose >1.6 g/(l*d). CONCLUSIONS This study provides some meaningful information about the lipogenic ability of some yeast species. Variable lipid yields and fatty acid profiles were observed in dependence of both temperature and different carbon sources. L. creatinivorum exhibited the highest lipogenic performances.
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Affiliation(s)
- Sara Filippucci
- Department of Agricultural, Food and Environmental Sciences & Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
| | - Giorgia Tasselli
- Department of Agricultural, Food and Environmental Sciences & Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
| | - Alessandro Scardua
- Laboratories of Biotechnology, Novamont S.p.A, via Fauser 8, Novara, 28100 Italy
| | - Simone Di Mauro
- Department of Agricultural, Food and Environmental Sciences & Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
| | - Maria Rita Cramarossa
- Department of Life Sciences, University of Modena and Reggio Emilia, via Campi 287, Modena, 41125 Italy
| | - Davide Perini
- Laboratories of Biotechnology, Novamont S.p.A, via Fauser 8, Novara, 28100 Italy
| | - Benedetta Turchetti
- Department of Agricultural, Food and Environmental Sciences & Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
| | - Andrea Onofri
- Department of Agricultural, Food and Environmental Sciences & Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
| | - Luca Forti
- Department of Life Sciences, University of Modena and Reggio Emilia, via Campi 287, Modena, 41125 Italy
| | - Pietro Buzzini
- Department of Agricultural, Food and Environmental Sciences & Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy
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21
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Yellapu SK, Bezawada J, Kaur R, Kuttiraja M, Tyagi RD. Detergent assisted lipid extraction from wet yeast biomass for biodiesel: A response surface methodology approach. BIORESOURCE TECHNOLOGY 2016; 218:667-673. [PMID: 27416517 DOI: 10.1016/j.biortech.2016.07.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/02/2016] [Accepted: 07/04/2016] [Indexed: 06/06/2023]
Abstract
The lipid extraction from the microbial biomass is a tedious and high cost dependent process. In the present study, detergent assisted lipids extraction from the culture of the yeast Yarrowia lipolytica SKY-7 was carried out. Response surface methodology (RSM) was used to investigate the effect of three principle parameters (N-LS concentration, time and temperature) on microbial lipid extraction efficiency % (w/w). The results obtained by statistical analysis showed that the quadratic model fits in all cases. Maximum lipid recovery of 95.3±0.3% w/w was obtained at the optimum level of process variables [N-LS concentration 24.42mg (equal to 48mgN-LS/g dry biomass), treatment time 8.8min and reaction temperature 30.2°C]. Whereas the conventional chloroform and methanol extraction to achieve total lipid recovery required 12h at 60°C. The study confirmed that oleaginous yeast biomass treatment with N-lauroyl sarcosine would be a promising approach for industrial scale microbial lipid recovery.
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Affiliation(s)
- Sravan Kumar Yellapu
- INRS Eau, Terre et Environnement, 490, rue de la Couronne, Québec G1K 9A9, Canada
| | - Jyothi Bezawada
- INRS Eau, Terre et Environnement, 490, rue de la Couronne, Québec G1K 9A9, Canada
| | - Rajwinder Kaur
- INRS Eau, Terre et Environnement, 490, rue de la Couronne, Québec G1K 9A9, Canada
| | | | - Rajeshwar D Tyagi
- INRS Eau, Terre et Environnement, 490, rue de la Couronne, Québec G1K 9A9, Canada.
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Etchegaray A, Coutte F, Chataigné G, Béchet M, Dos Santos RHZ, Leclère V, Jacques P. Production of Bacillus amyloliquefaciens OG and its metabolites in renewable media: valorisation for biodiesel production and p-xylene decontamination. Can J Microbiol 2016; 63:46-60. [PMID: 27912317 DOI: 10.1139/cjm-2016-0288] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Biosurfactants are important in many areas; however, costs impede large-scale production. This work aimed to develop a global sustainable strategy for the production of biosurfactants by a novel strain of Bacillus amyloliquefaciens. Initially, Bacillus sp. strain 0G was renamed B. amyloliquefaciens subsp. plantarum (syn. Bacillus velezensis) after analysis of the gyrA and gyrB DNA sequences. Growth in modified Landy's medium produced 3 main recoverable metabolites: surfactin, fengycin, and acetoin, which promote plant growth. Cultivation was studied in the presence of renewable carbon (as glycerol) and nitrogen (as arginine) sources. While diverse kinetics of acetoin production were observed in different media, similar yields (6-8 g·L-1) were obtained after 72 h of growth. Glycerol increased surfactin-specific production, while arginine increased the yields of surfactin and fengycin and increased biomass significantly. The specific production of fengycin increased ∼10 times, possibly due to a connecting pathway involving arginine and ornithine. Adding value to crude extracts and biomass, both were shown to be useful, respectively, for the removal of p-xylene from contaminated water and for biodiesel production, yielding ∼70 mg·g-1 cells and glycerol, which could be recycled in novel media. This is the first study considering circular bioeconomy to lower the production costs of biosurfactants by valorisation of both microbial cells and their primary and secondary metabolites.
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Affiliation(s)
- Augusto Etchegaray
- a Pontifical Catholic University of Campinas, Rodovia Dom Pedro I, km 136, Campinas, SP, 13086-900, Brazil
| | - François Coutte
- b ICV-Université Lille, EA 7394-ICV Institut Charles Viollette, F-59000 Lille, France
| | - Gabrielle Chataigné
- b ICV-Université Lille, EA 7394-ICV Institut Charles Viollette, F-59000 Lille, France
| | - Max Béchet
- b ICV-Université Lille, EA 7394-ICV Institut Charles Viollette, F-59000 Lille, France
| | - Ramon H Z Dos Santos
- a Pontifical Catholic University of Campinas, Rodovia Dom Pedro I, km 136, Campinas, SP, 13086-900, Brazil
| | - Valérie Leclère
- b ICV-Université Lille, EA 7394-ICV Institut Charles Viollette, F-59000 Lille, France
| | - Philippe Jacques
- b ICV-Université Lille, EA 7394-ICV Institut Charles Viollette, F-59000 Lille, France
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Artificial cell-cell communication as an emerging tool in synthetic biology applications. J Biol Eng 2015; 9:13. [PMID: 26265937 PMCID: PMC4531478 DOI: 10.1186/s13036-015-0011-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 07/25/2015] [Indexed: 01/14/2023] Open
Abstract
Cell-cell communication is a widespread phenomenon in nature, ranging from bacterial quorum sensing and fungal pheromone communication to cellular crosstalk in multicellular eukaryotes. These communication modes offer the possibility to control the behavior of an entire community by modifying the performance of individual cells in specific ways. Synthetic biology, i.e., the implementation of artificial functions within biological systems, is a promising approach towards the engineering of sophisticated, autonomous devices based on specifically functionalized cells. With the growing complexity of the functions performed by such systems, both the risk of circuit crosstalk and the metabolic burden resulting from the expression of numerous foreign genes are increasing. Therefore, systems based on a single type of cells are no longer feasible. Synthetic biology approaches with multiple subpopulations of specifically functionalized cells, wired by artificial cell-cell communication systems, provide an attractive and powerful alternative. Here we review recent applications of synthetic cell-cell communication systems with a specific focus on recent advances with fungal hosts.
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