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Villegas-Méndez MÁ, Montañez J, Contreras-Esquivel JC, Salmerón I, Koutinas AA, Morales-Oyervides L. Scale-up and fed-batch cultivation strategy for the enhanced co-production of microbial lipids and carotenoids using renewable waste feedstock. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 339:117866. [PMID: 37030236 DOI: 10.1016/j.jenvman.2023.117866] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 02/01/2023] [Accepted: 04/02/2023] [Indexed: 05/03/2023]
Abstract
Agro-industrial by-product valorization as a feedstock for the bioproduction of high-value products has demonstrated a feasible alternative to handle the environmental impact of waste. Oleaginous yeasts are promising cell factories for the industrial production of lipids and carotenoids. Since oleaginous yeasts are aerobic microorganisms, studying the volumetric mass transfer (kLa) could facilitate the scale-up and operation of bioreactors to grant the industrial availability of biocompounds. Scale-up experiments were performed to assess the simultaneous production of lipids and carotenoids using the yeast Sporobolomyces roseus CFGU-S005 and comparing the yields in batch and fed-batch mode cultivation using agro-waste hydrolysate in a 7 L bench-top bioreactor. The results indicate that oxygen availability in the fermentation affected the simultaneous production of metabolites. The highest production of lipids (3.4 g/L) was attained using the kLa value of 22.44 h-1, while higher carotenoid accumulation of 2.58 mg/L resulted when agitation speed was increased to 350 rpm (kLa 32.16 h-1). The adapted fed-batch mode in the fermentation increased the production yields two times. The fatty acid profile was affected according to supplied aeration and after the fed-batch cultivation mode. This study showed the scale-up potential of the bioprocess using the strain S. roseus in the obtention of microbial oil and carotenoids by the valorization of agro-industrial byproducts as a carbon source.
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Affiliation(s)
- Miguel Ángel Villegas-Méndez
- Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Unidad Saltillo, Saltillo, 25280, Coahuila, Mexico
| | - Julio Montañez
- Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Unidad Saltillo, Saltillo, 25280, Coahuila, Mexico
| | | | - Iván Salmerón
- School of Chemical Science, Autonomous University of Chihuahua, Circuit 1, New University Campus, Chihuahua, Chihuahua, 31125, Mexico
| | - Apostolis A Koutinas
- Department of Food Science and Human Nutrition, Agricultural University of Athens, Iera Odos 75, 118 55, Athens, Greece
| | - Lourdes Morales-Oyervides
- Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Unidad Saltillo, Saltillo, 25280, Coahuila, Mexico.
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Correa CZ, de Tavares Machado Bolonhesi IB, Lopes DD, Prates KVMC, Panagio LA, Ratuchne A, Damianovic MHRZ. Removal of organic matter and nitrogen from dairy effluents in a structured bed reactor operated with intermittent aeration. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:91060-91073. [PMID: 37464210 DOI: 10.1007/s11356-023-28581-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 06/29/2023] [Indexed: 07/20/2023]
Abstract
The objective of this research was to evaluate the performance of a structured bed reactor (SBRIA), carried out with intermittent aeration (IA), in the removal of organic matter and nitrogen from dairy effluent, when run with different organic loading rates (OLR). The SBRIA was operated for 227 days, with 2:1 AI cycles (2 h with aeration on and 1 h off) and Hydraulic Retention Time (HRT) of 16 h. Three phases, with different OLR, were evaluated: phases A (1000 gCOD m-3 day-1 - 63 days), B (1400 gCOD m-3 day-1 - 94 days), and C (1800 gCOD m-3 day-1 - 70 days). The percentage of COD, NH4+-N removal, and nitrogen removal, respectively, were above 85 ± 7%, 73 ± 27%, and 83 ± 5, in all phases. There was no accumulation of the oxidized forms of nitrogen in the reactor. The kinetic test, performed to evaluate the nitrification and denitrification in the system, indicated that even in dissolved oxygen concentrations of 4.5 mg L-1, it was possible to obtain the denitrification process in the system. The results demonstrate that the reactor under study has positive characteristics to be used as an alternative for removing the removal of organic material and nitrogen in the biological treatment of dairy effluents.
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Affiliation(s)
- Camila Zoe Correa
- Department of Civil Construction, State University of Londrina, Rodovia Celso Garcia Cid, Km 380, Campus Universitario, CEP, Londrina, Parana, 86057-970, Brazil.
| | | | - Deize Dias Lopes
- Department of Civil Construction, State University of Londrina, Rodovia Celso Garcia Cid, Km 380, Campus Universitario, CEP, Londrina, Parana, 86057-970, Brazil
| | - Kátia Valéria Marques Cardoso Prates
- Department of Environmental Engineering, Federal Technological University of Paraná, Av. Dos Pioneiros 3131, Londrina, Parana, CEP 86036-370, Brazil
| | - Luciano Aparecido Panagio
- Department of Microbiology, State University of Londrina, Rodovia Celso Garcia Cid, Km 380, Campus Universitario, Londrina, Parana, CEP 86057-970, Brazil
| | - Aline Ratuchne
- Department of Microbiology, State University of Londrina, Rodovia Celso Garcia Cid, Km 380, Campus Universitario, Londrina, Parana, CEP 86057-970, Brazil
| | - Márcia Helena Rissato Zamariolli Damianovic
- Laboratory of Biological Processes, São Carlos School of Engineering, University of São Paulo (USP), 1100, João Dagnone Ave., Santa Angelina, Sao Carlos, São Paulo, 13563-120, Brazil
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Poopisut P, Boonyanan P, Boontawan P, Sukjit E, Promsampao N, Chollacoop N, Ketudat-Cairns M, Pattiya A, Boontawan A. Oleaginous yeast, Rhodotorula paludigena CM33, platform for bio-oil and biochar productions via fast pyrolysis. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:17. [PMID: 36740699 PMCID: PMC9899373 DOI: 10.1186/s13068-023-02270-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 01/27/2023] [Indexed: 02/07/2023]
Abstract
An oleaginous yeast Rhodotorula paludigena CM33 was pyrolyzed for the first time to produce bio-oil and biochar applying a bench-scale reactor. The strain possessed a high lipid content with the main fatty acids similar to vegetable oils. Prior to pyrolysis, the yeast was dehydrated using a spray dryer. Pyrolysis temperatures in the range of 400-600 °C were explored in order to obtain the optimal condition for bio-oil and biochar production. The result showed that a maximum bio-oil yield of 60% was achieved at 550 °C. Simulated distillation gas chromatography showed that the bio-oil contained 2.6% heavy naphtha, 20.7% kerosene, 24.3% biodiesel, and 52.4% fuel oil. Moreover, a short path distillation technique was attempted in order to further purify the bio-oil. The biochar was also characterized for its properties. The consequence of this work could pave a way for the sustainable production of solid and liquid biofuel products from the oleaginous yeast.
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Affiliation(s)
- Pongsatorn Poopisut
- grid.6357.70000 0001 0739 3220School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand
| | - Pasama Boonyanan
- grid.6357.70000 0001 0739 3220School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand
| | - Pailin Boontawan
- grid.6357.70000 0001 0739 3220School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand
| | - Ekarong Sukjit
- grid.6357.70000 0001 0739 3220School of Mechanical Engineering, Institute of Engineering, Suranaree University of Technology, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand
| | - Nuttapan Promsampao
- grid.411538.a0000 0001 1887 7220Biomass Pyrolysis Frontier Research Group, Faculty of Engineering, Mahasarakham University, Kamriang, Kantharawichai, Maha Sarakham 44150 Thailand ,National Energy Technology Center, 114 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Khlong Luang, Pathum Thani 12120 Thailand
| | - Nuwong Chollacoop
- National Energy Technology Center, 114 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Khlong Luang, Pathum Thani 12120 Thailand
| | - Mariena Ketudat-Cairns
- grid.6357.70000 0001 0739 3220School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand
| | - Adisak Pattiya
- grid.411538.a0000 0001 1887 7220Biomass Pyrolysis Frontier Research Group, Faculty of Engineering, Mahasarakham University, Kamriang, Kantharawichai, Maha Sarakham 44150 Thailand
| | - Apichat Boontawan
- grid.6357.70000 0001 0739 3220School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand ,grid.6357.70000 0001 0739 3220Center of Excellent in Agricultural Product Innovation, Suranaree University of Technology, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand
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Optimization of agro-industrial coproducts (molasses and cassava wastewater) for the simultaneous production of lipids and carotenoids by Rhodotorula mucilaginosa. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102342] [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]
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Abeln F, Chuck CJ. The history, state of the art and future prospects for oleaginous yeast research. Microb Cell Fact 2021; 20:221. [PMID: 34876155 PMCID: PMC8650507 DOI: 10.1186/s12934-021-01712-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/23/2021] [Indexed: 12/25/2022] Open
Abstract
Lipid-based biofuels, such as biodiesel and hydroprocessed esters, are a central part of the global initiative to reduce the environmental impact of the transport sector. The vast majority of production is currently from first-generation feedstocks, such as rapeseed oil, and waste cooking oils. However, the increased exploitation of soybean oil and palm oil has led to vast deforestation, smog emissions and heavily impacted on biodiversity in tropical regions. One promising alternative, potentially capable of meeting future demand sustainably, are oleaginous yeasts. Despite being known about for 143 years, there has been an increasing effort in the last decade to develop a viable industrial system, with currently around 100 research papers published annually. In the academic literature, approximately 160 native yeasts have been reported to produce over 20% of their dry weight in a glyceride-rich oil. The most intensively studied oleaginous yeast have been Cutaneotrichosporon oleaginosus (20% of publications), Rhodotorula toruloides (19%) and Yarrowia lipolytica (19%). Oleaginous yeasts have been primarily grown on single saccharides (60%), hydrolysates (26%) or glycerol (19%), and mainly on the mL scale (66%). Process development and genetic modification (7%) have been applied to alter yeast performance and the lipids, towards the production of biofuels (77%), food/supplements (24%), oleochemicals (19%) or animal feed (3%). Despite over a century of research and the recent application of advanced genetic engineering techniques, the industrial production of an economically viable commodity oil substitute remains elusive. This is mainly due to the estimated high production cost, however, over the course of the twenty-first century where climate change will drastically change global food supply networks and direct governmental action will likely be levied at more destructive crops, yeast lipids offer a flexible platform for localised, sustainable lipid production. Based on data from the large majority of oleaginous yeast academic publications, this review is a guide through the history of oleaginous yeast research, an assessment of the best growth and lipid production achieved to date, the various strategies employed towards industrial production and importantly, a critical discussion about what needs to be built on this huge body of work to make producing a yeast-derived, more sustainable, glyceride oil a commercial reality.
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Affiliation(s)
- Felix Abeln
- Department of Chemical Engineering, University of Bath, Bath, BA2 7AY, UK.
- Centre for Sustainable and Circular Technologies, University of Bath, Bath, BA2 7AY, UK.
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Screening of plant oils promoting growth of the red yeast Xanthophyllomyces dendrorhous with astaxanthin and fatty acid production. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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7
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Kostovová I, Byrtusová D, Rapta M, Babák V, Márová I. The variability of carotenoid pigments and fatty acids produced by some yeasts within Sporidiobolales and Cystofilobasidiales. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01567-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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8
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Single Cell Oil Production by Oleaginous Yeasts Grown in Synthetic and Waste-Derived Volatile Fatty Acids. Microorganisms 2020; 8:microorganisms8111809. [PMID: 33213005 PMCID: PMC7698568 DOI: 10.3390/microorganisms8111809] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/01/2020] [Accepted: 11/13/2020] [Indexed: 12/02/2022] Open
Abstract
Four yeast isolates from the species—Apiotrichum brassicae, Candida tropicalis, Metschnikowia pulcherrima, and Pichia kudriavzevii—previously selected by their oleaginous character and growth flexibility in different carbon sources, were tested for their capacity to convert volatile fatty acids into lipids, in the form of single cell oils. Growth, lipid yields, volatile fatty acids consumption, and long-chain fatty acid profiles were evaluated in media supplemented with seven different volatile fatty acids (acetic, butyric, propionic, isobutyric, valeric, isovaleric, and caproic), and also in a dark fermentation effluent filtrate. Yeasts A. brassicae and P. kudriavzevii attained lipid productivities of more than 40% (w/w), mainly composed of oleic (>40%), palmitic (20%), and stearic (20%) acids, both in synthetic media and in the waste-derived effluent filtrate. These isolates may be potential candidates for single cell oil production in larger scale applications by using alternative carbon sources, combining economic and environmental benefits.
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da Silva J, Honorato da Silva FL, Santos Ribeiro JE, Nóbrega de Melo DJ, Santos FA, Lucena de Medeiros L. Effect of supplementation, temperature and pH on carotenoids and lipids production by Rhodotorula mucilaginosa on sisal bagasse hydrolyzate. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101847] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Genome Sequence of the Oleaginous Yeast Rhodotorula paludigena Strain CM33, a Potential Strain for Biofuel Production. Microbiol Resour Announc 2020; 9:9/19/e00286-20. [PMID: 32381615 PMCID: PMC7206493 DOI: 10.1128/mra.00286-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The genome sequence of Rhodotorula paludigena strain CM33, an oleaginous yeast isolated from castor bean (Ricinus sp.) in Thailand, is reported here. Genome sequencing and assembly yielded 20,657,327 bases with a 64.3% G+C content. The genome sequence of Rhodotorula paludigena strain CM33, an oleaginous yeast isolated from castor bean (Ricinus sp.) in Thailand, is reported here. Genome sequencing and assembly yielded 20,657,327 bases with a 64.3% G+C content.
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11
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Costa WAD, Padilha CEDA, Oliveira Júnior SDD, Silva FLHD, Silva J, Ancântara MA, Ferrari M, Santos ESD. Oil-lipids, carotenoids and fatty acids simultaneous production by Rhodotorula mucilaginosa CCT3892 using sugarcane molasses as carbon source. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2020. [DOI: 10.1590/1981-6723.06419] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract One of the most important classes of nutritional biomolecules is the oleaginous compounds group, which specially includes the oil-lipids, the carotenoids and the fatty acids. These biocompounds present a wide range of industrial applications because their ability to act as an energy source, antioxidants and metabolic agents for the human body. Therefore, the food industry, mainly focusing on food supplementation, is always searching for new sources of them. In this context, the present study evaluated the total lipids, carotenoids and fatty acids simultaneous production by the Rhodotorula mucilaginosa CCT3892 yeast, using residual sugarcane molasses as carbon source. The results obtained demonstrated that the cultivation of yeast in molasses medium (MC) produced the same content of total lipids and carotenoids (16.50% ± 0.68% and 0.053 ± 0.001 mg g-1, respectively) as the obtained from a synthetic medium (SC) (15.36% ± 1.36% and 0.051 ± 0.001 mg g-1 0.005). Concerning the fatty acids biosynthesis, the MC cultivation generated the most interesting profile once it presented a greater content of oleic acid (74.05%), an unsaturated compound with high nutritional value. The cultivation carried out with the molasses and yeast extract supplementation (MYEC) did not provide an improvement in microbial oil production, what indicated that in this condition there was a predominance of others sorts of substrate metabolization by the yeast cells, as confirmed by the microbial kinetics study.
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Sekova VY, Dergacheva DI, Isakova EP, Gessler NN, Tereshina VM, Deryabina YI. Soluble Sugar and Lipid Readjustments in the Yarrowia lipolytica Yeast at Various Temperatures and pH. Metabolites 2019; 9:metabo9120307. [PMID: 31861165 PMCID: PMC6950712 DOI: 10.3390/metabo9120307] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/13/2019] [Accepted: 12/15/2019] [Indexed: 12/20/2022] Open
Abstract
Microorganisms cope with a wide range of environmental challenges using different mechanisms. Their ability to prosper at extreme ambient pH and high temperatures has been well reported, but the adaptation mechanism often remains unrevealed. In this study, we addressed the dynamics of lipid and sugar profiles upon different cultivation conditions. The results showed that the cells grown at various pH and optimal temperature contained mannitol as the major cytosol sugar alcohol. The elevated temperature of 38 °C led to a two- to three-fold increase in total cytosol sugars with concurrent substitution of mannitol for trehalose. Lipid composition in the cells at optimal temperature changed insignificantly at any pH tested. The increase in the temperature caused some drop in the storage and membrane lipid levels, remarkable changes in their composition, and the degree of unsaturated fatty acids. It was shown that the fatty acid composition of some membrane phospholipids varied considerably at changing pH and temperature values. The data showed a pivotal role and flexibility of the sugar and lipid composition of Y. lipolytica W29 in adaptation to unfavorable environmental conditions.
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Affiliation(s)
- Varvara Yu Sekova
- A.N. Bach Institute of Biochemistry, Russian Academy of Sciences, bld 33-2, Leninsly Prospect, Moscow 119071, Russia; (D.I.D.); (N.N.G.); (Y.I.D.)
- Correspondence: (V.Y.S.); (E.P.I.)
| | - Daria I. Dergacheva
- A.N. Bach Institute of Biochemistry, Russian Academy of Sciences, bld 33-2, Leninsly Prospect, Moscow 119071, Russia; (D.I.D.); (N.N.G.); (Y.I.D.)
| | - Elena P. Isakova
- A.N. Bach Institute of Biochemistry, Russian Academy of Sciences, bld 33-2, Leninsly Prospect, Moscow 119071, Russia; (D.I.D.); (N.N.G.); (Y.I.D.)
- Correspondence: (V.Y.S.); (E.P.I.)
| | - Natalya N. Gessler
- A.N. Bach Institute of Biochemistry, Russian Academy of Sciences, bld 33-2, Leninsly Prospect, Moscow 119071, Russia; (D.I.D.); (N.N.G.); (Y.I.D.)
| | - Vera M. Tereshina
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33/2, Moscow 119071, Russia;
| | - Yulia I. Deryabina
- A.N. Bach Institute of Biochemistry, Russian Academy of Sciences, bld 33-2, Leninsly Prospect, Moscow 119071, Russia; (D.I.D.); (N.N.G.); (Y.I.D.)
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Utilization of Wheat Bran Acid Hydrolysate by Rhodotorula mucilaginosa Y-MG1 for Microbial Lipid Production as Feedstock for Biodiesel Synthesis. BIOMED RESEARCH INTERNATIONAL 2019; 2019:3213521. [PMID: 31915687 PMCID: PMC6930767 DOI: 10.1155/2019/3213521] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/08/2019] [Accepted: 11/14/2019] [Indexed: 11/17/2022]
Abstract
The lignocellulosic hydrolysate was used as the fermentation feedstock of Rhodotorula mucilaginosa Y-MG1 for the production of microbial lipids as the potential raw material for biodiesel synthesis. On synthetic media and under nitrogen-limiting condition, the Y-MG1 strain produces 2.13 g/L of lipids corresponding to 32.7% of lipid content. This strain was able to assimilate a wide range of substrates, especially C5 and C6 sugars as well as glycerol and sucrose. Fatty acid composition shows a divergence depending on the nature of used carbon source with a predominance of oleic acid or linoleic acid. An effective hydrolysis process, based on diluted acid treatment, was established for providing the maximum of fermentable sugars from different characterized lignocellulosic wastes. The highest yield of reducing sugars (56.6 g/L) could be achieved when wheat bran was used as the raw material. Hydrolysate detoxification step was not required in this study since the Y-MG1 strain was shown to grow and produce lipids in the presence of inhibitors and without the addition of external elements. Operating by controlled fed-batch fermentation yielded a dry biomass and oil yield of up to 11 g/L and 38.7% (w/w), respectively. The relative fatty acid composition showed the presence of increased levels of monounsaturated (66.8%) and saturated (23.4%) fatty acids in lipids of Y-MG1 grown on wheat bran. The predictive determination of biodiesel properties suggests that this oil may effectively be used for biodiesel production.
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Ribeiro JES, Sant'Ana AMDS, Martini M, Sorce C, Andreucci A, Melo DJND, Silva FLHD. Rhodotorula glutinis cultivation on cassava wastewater for carotenoids and fatty acids generation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101419] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Truong KA, Stephenson SL, Phung TV, Tran HTM. Effects of medium composition on the growth and lipid production of microplasmodia of Physarum polycephalum. Biotechnol Prog 2019; 35:e2873. [PMID: 31215765 DOI: 10.1002/btpr.2873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 06/08/2019] [Accepted: 06/14/2019] [Indexed: 01/09/2023]
Abstract
Physarum polycephalum is a plasmodial slime mold. One of the trophic stages in the life cycle of this organism is a plasmodium. In submerged culture, plasmodia are fragmented into microplasmodia. The latter both lack cell walls and are capable of rapid growth. There has been limited information on the effects of medium composition on the growth and lipid accumulation of microplasmodia. In this study, optimization of medium components by response surface methodology showed that tryptone and yeast extract concentrations had the most significant effects on lipid and biomass production; significant synergistic interactions between glucose and tryptone concentration on these responses were also recorded. The optimal medium was composed of 20 g/L of glucose, 6.59 g/L of tryptone, and 3.0 g/L of yeast extract. This medium yielded 13.86 g/L of dry biomass and 1.97 g/L of lipids. These amounts are threefold higher than those of the American Type Culture Collection (ATCC) medium. In addition, biomass and lipid production reached maximal values between only 4 and 5 days. Fatty acid compositions analysis by gas chromatography-mass spectrometer (GC-MS) revealed that P. polycephalum lipids consisted mainly of oleic acid (40.5%), linoleic acid (10%), and octadecynoic (15.8%). This is the first report on the fatty acid composition of P. polycephalum microplasmodia. These results suggest that the biomass of microplasmodia could be used as a source of material for direct conversion into biodiesel because of the absence of cell walls or it could also be used as a supplemental source of beneficial fatty acids for humans, albeit with some further evaluation needed.
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Affiliation(s)
- Kiet A Truong
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
| | - Steven L Stephenson
- Department of Biological Sciences, University of Arkansas, Fayetteville, Arkansas
| | - Trung V Phung
- Center for Research and Technology Transfer, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Hanh T M Tran
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
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Gientka I, Kieliszek M, Jermacz K, Błażejak S. Identification and Characterization of Oleaginous Yeast Isolated from Kefir and Its Ability to Accumulate Intracellular Fats in Deproteinated Potato Wastewater with Different Carbon Sources. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6061042. [PMID: 29098157 PMCID: PMC5623792 DOI: 10.1155/2017/6061042] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/06/2017] [Accepted: 07/18/2017] [Indexed: 12/16/2022]
Abstract
The search for efficient oleaginous microorganisms, which can be an alternative to fossil fuels and biofuels obtained from oilseed crops, has been going on for many years. The suitability of microorganisms in this regard is determined by their ability to biosynthesize lipids with preferred fatty acid profile along with the concurrent utilization of energy-rich industrial waste. In this study, we isolated, characterized, and identified kefir yeast strains using molecular biology techniques. The yeast isolates identified were Candida inconspicua, Debaryomyces hansenii, Kluyveromyces marxianus, Kazachstania unispora, and Zygotorulaspora florentina. We showed that deproteinated potato wastewater, a starch processing industry waste, supplemented with various carbon sources, including lactose and glycerol, is a suitable medium for the growth of yeast, which allows an accumulation of over 20% of lipid substances in its cells. Fatty acid composition primarily depended on the yeast strain and the carbon source used, and, based on our results, most of the strains met the criteria required for the production of biodiesel. In particular, this concerns a significant share of saturated fatty acids, such as C16:0 and C18:0, and unsaturated fatty acids, such as C18:1 and C18:2. The highest efficiency in lipid biosynthesis exceeded 6.3 g L-1. Kazachstania unispora was able to accumulate the high amount of palmitoleic acid.
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Affiliation(s)
- Iwona Gientka
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Science, Warsaw University of Life Sciences-SGGW, Nowoursynowska Str. 159c, 02-776 Warsaw, Poland
| | - Marek Kieliszek
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Science, Warsaw University of Life Sciences-SGGW, Nowoursynowska Str. 159c, 02-776 Warsaw, Poland
| | - Karolina Jermacz
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Science, Warsaw University of Life Sciences-SGGW, Nowoursynowska Str. 159c, 02-776 Warsaw, Poland
| | - Stanisław Błażejak
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Science, Warsaw University of Life Sciences-SGGW, Nowoursynowska Str. 159c, 02-776 Warsaw, Poland
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Effect of initial pH of medium with potato wastewater and glycerol on protein, lipid and carotenoid biosynthesis by Rhodotorula glutinis. ELECTRON J BIOTECHN 2017. [DOI: 10.1016/j.ejbt.2017.01.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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