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Ochoa-Viñals N, Alonso-Estrada D, Faife-Pérez E, Chen Z, Michelena-Alvarez G, Martínez-Hernández JL, García-Cruz A, Ilina A. β-Carotene production from sugarcane molasses by a newly isolated Rhodotorula toruloides L/24-26-1. Arch Microbiol 2024; 206:245. [PMID: 38702537 DOI: 10.1007/s00203-024-03973-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: 02/18/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024]
Abstract
Production of carotenoids by yeast fermentation is an advantaged technology due to its easy scaling and safety. Nevertheless, carotenoid production needs an economic culture medium and other efficient yeast stains. The study aims to isolate and identify a yeast strain capable of producing carotenoids using a cost-effective substrate. A new strain was identified as Rhodotorula toruloides L/24-26-1, which can produce carotenoids at different pretreated and unpretreated sugarcane molasses concentrations (40 and 80 g/L). The highest biomass concentration (18.6 ± 0.6 g/L) was reached in the culture using 80 g/L of hydrolyzed molasses. On the other hand, the carotenoid accumulation reached the maximum value using pretreated molasses at 40 g/L (715.4 ± 15.1 µg/g d.w). In this case, the β-carotene was 1.5 times higher than that on the control medium. The yeast growth in molasses was not correlated with carotenoid production. The most outstanding production of The DPPH, ABTS, and FRAP tests demonstrated the antioxidant activity of the obtained carotenogenic extracts. This research demonstrated the R. toruloides L/24-26-1 strain biotechnological potential for carotenoid compounds. The yeast produces carotenoids with antioxidant activity in an inexpensive medium, such as sulfuric acid pretreated and unpretreated molasses.
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Affiliation(s)
- Nayra Ochoa-Viñals
- Nanobioscience Group, Chemical Science School of the Autonomous University of Coahuila, Blvd. V. Carranza E Ing. José Cárdenas V., Col. República, Saltillo, CP, 25280, Coahuila, México
| | - Dania Alonso-Estrada
- Nanobioscience Group, Chemical Science School of the Autonomous University of Coahuila, Blvd. V. Carranza E Ing. José Cárdenas V., Col. República, Saltillo, CP, 25280, Coahuila, México
| | - Evelyn Faife-Pérez
- Cuban Institute for Research On Sugarcane Derivatives (ICIDCA), Vía Blanca 804 and Carretera Central, 11000, Havana, CP, Cuba
| | - Zhen Chen
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China
| | - Georgina Michelena-Alvarez
- Cuban Institute for Research On Sugarcane Derivatives (ICIDCA), Vía Blanca 804 and Carretera Central, 11000, Havana, CP, Cuba
| | - José Luis Martínez-Hernández
- Nanobioscience Group, Chemical Science School of the Autonomous University of Coahuila, Blvd. V. Carranza E Ing. José Cárdenas V., Col. República, Saltillo, CP, 25280, Coahuila, México
| | - Ariel García-Cruz
- Department of Engineering, National Technological Institute of Mexico/TI of Ciudad Valles, Ciudad Valles, SL, 79010, México
| | - Anna Ilina
- Nanobioscience Group, Chemical Science School of the Autonomous University of Coahuila, Blvd. V. Carranza E Ing. José Cárdenas V., Col. República, Saltillo, CP, 25280, Coahuila, México.
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Angelicola MV, Fernández PM, Aybar MJ, Van Nieuwenhove CP, Figueroa LI, Viñarta SC. Bioconversion of commercial and crude glycerol to single-cell oils by the Antarctic yeast Rhodotorula glutinis R4 as a biodiesel feedstock. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Molecular Identification and Biochemical Characterization of Novel Marine Yeast Strains with Potential Application in Industrial Biotechnology. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8100538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cell-based agriculture is an emerging and attractive alternative to produce various food ingredients. In this study, five strains of marine yeast were isolated, molecularly identified and biochemically characterized. Molecular identification was realized by sequencing the DNA ITS1 and D1/D2 region, and sequences were registered in GenBank as Yarrowia lipolytica YlTun15, Rhodotorula mucilaginosa RmTun15, Candida tenuis CtTun15, Debaryomyces hansenii DhTun2015 and Trichosporon asahii TaTun15. Yeasts showed protein content varying from 26% (YlTun15) to 40% (CtTun15 and DhTun2015), and essential amino acids ranging from 38.1 to 64.4% of the total AAs (CtTun15-YlTun15, respectively). Lipid content varied from 11.15 to 37.57% with substantial amount of PUFA (>12% in RmTun15). All species had low levels of Na (<0.15 mg/100 g) but are a good source of Ca and K. Yeast cytotoxic effect was investigated against human embryonic kidney cells (HEK 293); results showed improved cell viability with all added strains, indicating safety of the strains used. Based on thorough literature investigation and yeast composition, the five identified strains could be classified not only as oleaginous yeasts but also as single cell protein (SCP) (DhTun2015 and CtTun15) and single cell oil (SCO) (RmTun15, YlTun15 and TaTun15) producers; and therefore, they represent a source of alternative ingredients for food, feed and other sectors.
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4
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Polyhydroxybutyrate biosynthesis from different waste materials, degradation, and analytic methods: a short review. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04406-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Deeba F, Kiran Kumar K, Ali Wani S, Kumar Singh A, Sharma J, Gaur NA. Enhanced biodiesel and β-carotene production in Rhodotorula pacifica INDKK using sugarcane bagasse and molasses by an integrated biorefinery framework. BIORESOURCE TECHNOLOGY 2022; 351:127067. [PMID: 35351564 DOI: 10.1016/j.biortech.2022.127067] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Dependency on fossil fuels raises an economic and ecological concern that has urged to look for alternative sources of energy. Bio-refinery concept is one of the alternate frameworks for the biomass conversion into biofuel and other value-added by-products. The present work illustrates importance of an oleaginous yeast Rhodotorula pacifica INDKK in an integrated bio-refinery field by utilizing renewable sugars generated from lignocellulosic biomass. The maximum 11.8 g/L lipid titer, 210.4 mg/L β-carotene and 7.1 g animal feed were produced by R. pacifica INDKK in bioreactor containing 5% (v/v) molasses supplemented with enzymatically hydrolyzed and alkali-pretreated sugarcane bagasse hydrolysate (35% v/v). Furthermore, xylooligosaccharides (20.6 g/L), a beneficial prebiotics were also produced from the hemicellulosic fraction separated after alkali pretreatment of bagasse. This novel concept of integrated yeast bio-refinery for concomitant production of biodiesel and multiple value-added products with minimum waste generation is proposed as a sustainable and profitable process.
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Affiliation(s)
- Farha Deeba
- Yeast Biofuel Group, DBT-ICGEB Centre for Advanced Bioenergy Research, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Kukkala Kiran Kumar
- Yeast Biofuel Group, DBT-ICGEB Centre for Advanced Bioenergy Research, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Shahid Ali Wani
- Yeast Biofuel Group, DBT-ICGEB Centre for Advanced Bioenergy Research, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Anup Kumar Singh
- Yeast Biofuel Group, DBT-ICGEB Centre for Advanced Bioenergy Research, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Juhi Sharma
- Yeast Biofuel Group, DBT-ICGEB Centre for Advanced Bioenergy Research, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India
| | - Naseem A Gaur
- Yeast Biofuel Group, DBT-ICGEB Centre for Advanced Bioenergy Research, International Centre for Genetic Engineering and Biotechnology, New Delhi 110067, India.
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Zorn S, Carvalho A, Bento H, Gambarato B, Pedro G, da Silva A, Gonçalves R, Da Rós P, Silva M. Use of Fungal Mycelium as Biosupport in the Formation of Lichen-Like Structure: Recovery of Algal Grown in Sugarcane Molasses for Lipid Accumulation and Balanced Fatty Acid Profile. MEMBRANES 2022; 12:membranes12030258. [PMID: 35323733 PMCID: PMC8949276 DOI: 10.3390/membranes12030258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/10/2022] [Accepted: 02/17/2022] [Indexed: 11/24/2022]
Abstract
In this study, a lichen-like structure was obtained through the production of a unique biomass, formed by algae cells of Scenedesmus obliquus adhering to the mycelium of filamentous fungal Mucor circinelloides. This structure was composed in two steps; in the first one, microalgal cells and spores were incubated separately, and in the second one, after 72 h of growth, isolated, mature mycelium was harvested and added to cell culture. For spores’ incubation, a culture medium containing only 2 g·L−1 of glucose and minerals was used. This culture medium, with low sugar content, provided a fungal biomass to the anchorage of microalgae cells. WC medium was used without and with sugarcane molasses supplementation for microalgae cells’ incubation. The lichen-type structure that was formed resulted in 99.7% efficiency in the recovery of microalgae cells and in up to 80% efficiency in the recovery of algae biomass in the lichen biomass composition. In addition, the resulting consortium attained a satisfactory lipid accumulation value (38.2 wt%) with a balanced fatty acid composition of 52.7% saturated plus monounsaturated fatty acids and 47.4% polyunsaturated fatty acids. Since fungal species are easy to recover, unlike microalgae, the lichen-like structure produced indicates an efficient low-cost bioremediation and harvesting alternative; in addition, it provides an oleaginous biomass for various industrial applications.
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Affiliation(s)
- Savienne Zorn
- Engineering School of Lorena, University of São Paulo, Lorena 12602-810, SP, Brazil; (A.C.); (G.P.); (A.d.S.); (P.D.R.); (M.S.)
- Correspondence:
| | - Ana Carvalho
- Engineering School of Lorena, University of São Paulo, Lorena 12602-810, SP, Brazil; (A.C.); (G.P.); (A.d.S.); (P.D.R.); (M.S.)
- Institute of Chemistry, Federal University of Alfenas, Alfenas 37130-001, MG, Brazil;
| | - Heitor Bento
- Faculty of Pharmaceutical Sciences, São Paulo State University, Araraquara 14800-903, SP, Brazil;
| | - Bruno Gambarato
- Department of Engineering and Technology, University Center of Volta Redonda—UniFOA, Volta Redonda 27240-560, RJ, Brazil;
| | - Guilherme Pedro
- Engineering School of Lorena, University of São Paulo, Lorena 12602-810, SP, Brazil; (A.C.); (G.P.); (A.d.S.); (P.D.R.); (M.S.)
| | - Ana da Silva
- Engineering School of Lorena, University of São Paulo, Lorena 12602-810, SP, Brazil; (A.C.); (G.P.); (A.d.S.); (P.D.R.); (M.S.)
| | - Rhyan Gonçalves
- Institute of Chemistry, Federal University of Alfenas, Alfenas 37130-001, MG, Brazil;
| | - Patrícia Da Rós
- Engineering School of Lorena, University of São Paulo, Lorena 12602-810, SP, Brazil; (A.C.); (G.P.); (A.d.S.); (P.D.R.); (M.S.)
| | - Messias Silva
- Engineering School of Lorena, University of São Paulo, Lorena 12602-810, SP, Brazil; (A.C.); (G.P.); (A.d.S.); (P.D.R.); (M.S.)
- Faculty of Engineering, Paulista State University Júlio de Mesquita Filho—UNESP, Guaratinguetá 12516-410, SP, Brazil
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Sodhi AS, Sharma N, Bhatia S, Verma A, Soni S, Batra N. Insights on sustainable approaches for production and applications of value added products. CHEMOSPHERE 2022; 286:131623. [PMID: 34346348 DOI: 10.1016/j.chemosphere.2021.131623] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 06/13/2023]
Abstract
The increasing demand for the development of sustainable strategies to utilize and process agro-industrial residues paves new paths for exploring innovative approaches in this area. Biotechnology based microbial transformations provide efficient, low cost and sustainable approaches for the production of value added products. The use of organic rich residues opens new avenues for the production of enzymes, pigments, biofuels, bioactive compounds, biopolymers etc. with vast industrial and therapeutic applications. Innovative technologies like strain improvement, enzyme immobilization, genome editing, morphological engineering, ultrasound/supercritical fluid/pulse electric field extraction, etc. can be employed. These will be helpful in achieving significant improvement in qualitative and quantitative parameters of the finished products. The global trend for the valorisation of biowaste has boosted the commercialization of these products which has transformed the markets by providing new investment opportunities. The upstream processing of raw materials using microbes poses a limitation in terms of product development and recovery which can be overcome by modifying the bioreactor design, physiological parameters or employing alternate technologies which will be discussed in this review. The other problems related to the processes include product stability, industrial applicability and cost competitiveness which needs to be addressed. This review comprehensively discusses the recent progress, avenues and challenges in the approaches aimed at valorisation of agro-industrial wastes along with possible opportunities in the bioeconomy.
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Affiliation(s)
- Abhinashi Singh Sodhi
- Department of Biotechnology, Goswami Ganesh Dutta Sanatan Dharma College, Sector-32-C, Chandigarh, 160030, India
| | - Neetu Sharma
- Department of Biotechnology, Goswami Ganesh Dutta Sanatan Dharma College, Sector-32-C, Chandigarh, 160030, India
| | - Sonu Bhatia
- Department of Biotechnology, Goswami Ganesh Dutta Sanatan Dharma College, Sector-32-C, Chandigarh, 160030, India
| | - Anoop Verma
- School of Energy and Environment, Thapar Institute of Engineering and Technology, Patiala, Punjab, India
| | - Sajeev Soni
- Department of Chemistry, Goswami Ganesh Dutta Sanatan Dharma College, Sector-32-C, Chandigarh, 160030, India
| | - Navneet Batra
- Department of Biotechnology, Goswami Ganesh Dutta Sanatan Dharma College, Sector-32-C, Chandigarh, 160030, India.
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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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9
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Gosalawit C, Imsoonthornruksa S, Gilroyed BH, Mcnea L, Boontawan A, Ketudat-Cairns M. The potential of the oleaginous yeast Rhodotorula paludigena CM33 to produce biolipids. J Biotechnol 2021; 329:56-64. [PMID: 33549673 DOI: 10.1016/j.jbiotec.2021.01.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 01/04/2021] [Accepted: 01/28/2021] [Indexed: 10/22/2022]
Abstract
Sixty-seven yeast strains were isolated from castor beans then their endogenous lipids were stained by Nile Red (NR) fluorescence dye, and flow cytometry was used to obtain a strain with a high relative mean fluorescence intensity (MFI) value. The highest MFI value was obtained for strain CM33, which produced a maximum lipid content of 20.8 % dry cell weight (DCW). Based on the sequence of the ITS-5.8S-ITS rDNA and D1/D2 26S rDNA regions, CM33 showed 99 % identity with Rhodotorula paludigena. The potential of CM33 to assimilate various carbon sources was examined by growth on minimal media using glucose, glycerol, sucrose or xylose. CM33 was grown in glucose-based medium for 96 h and exhibited a maximum lipid content of 23.9 % DCW. Furthermore, when cells were cultured on molasses waste, their biomass, lipid content and lipid concentration reached 16.5 g/L, 37.1 % DCW and 6.1 g/L, respectively. These results demonstrated the potential of R. paludigena CM33 to contribute to a value-added carbon chain by converting renewable waste materials for biolipid production.
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Affiliation(s)
- Chotika Gosalawit
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Suranaree Sub-district, Muang District, Nakhon Ratchasima, 30000, Thailand.
| | - Sumeth Imsoonthornruksa
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Suranaree Sub-district, Muang District, Nakhon Ratchasima, 30000, Thailand.
| | - Brandon H Gilroyed
- School of Environmental Sciences, University of Guelph Ridgetown Campus, 120 Main Street East, Ridgetown, Ontario, N0P 2C0, Canada.
| | - Lucas Mcnea
- School of Environmental Sciences, University of Guelph Ridgetown Campus, 120 Main Street East, Ridgetown, Ontario, N0P 2C0, Canada.
| | - Apichat Boontawan
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Suranaree Sub-district, Muang District, Nakhon Ratchasima, 30000, Thailand.
| | - Mariena Ketudat-Cairns
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Suranaree Sub-district, Muang District, Nakhon Ratchasima, 30000, Thailand.
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Martani F, Maestroni L, Torchio M, Ami D, Natalello A, Lotti M, Porro D, Branduardi P. Conversion of sugar beet residues into lipids by Lipomyces starkeyi for biodiesel production. Microb Cell Fact 2020; 19:204. [PMID: 33167962 PMCID: PMC7653891 DOI: 10.1186/s12934-020-01467-1] [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: 12/19/2019] [Accepted: 10/29/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Lipids from oleaginous yeasts emerged as a sustainable alternative to vegetable oils and animal fat to produce biodiesel, the biodegradable and environmentally friendly counterpart of petro-diesel fuel. To develop economically viable microbial processes, the use of residual feedstocks as growth and production substrates is required. RESULTS In this work we investigated sugar beet pulp (SBP) and molasses, the main residues of sugar beet processing, as sustainable substrates for the growth and lipid accumulation by the oleaginous yeast Lipomyces starkeyi. We observed that in hydrolysed SBP the yeast cultures reached a limited biomass, cellular lipid content, lipid production and yield (2.5 g/L, 19.2%, 0.5 g/L and 0.08 g/g, respectively). To increase the initial sugar availability, cells were grown in SBP blended with molasses. Under batch cultivation, the cellular lipid content was more than doubled (47.2%) in the presence of 6% molasses. Under pulsed-feeding cultivation, final biomass, cellular lipid content, lipid production and lipid yield were further improved, reaching respectively 20.5 g/L, 49.2%, 9.7 g/L and 0.178 g/g. Finally, we observed that SBP can be used instead of ammonium sulphate to fulfil yeasts nitrogen requirement in molasses-based media for microbial oil production. CONCLUSIONS This study demonstrates for the first time that SBP and molasses can be blended to create a feedstock for the sustainable production of lipids by L. starkeyi. The data obtained pave the way to further improve lipid production by designing a fed-batch process in bioreactor.
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Affiliation(s)
- Francesca Martani
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126, Milan, Italy
| | - Letizia Maestroni
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126, Milan, Italy
| | - Mattia Torchio
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126, Milan, Italy
| | - Diletta Ami
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126, Milan, Italy
| | - Antonino Natalello
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126, Milan, Italy
| | - Marina Lotti
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126, Milan, Italy
| | - Danilo Porro
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126, Milan, Italy
| | - Paola Branduardi
- Department of Biotechnology and Biosciences, University of Milano Bicocca, 20126, Milan, Italy.
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Sreeharsha RV, Mohan SV. Obscure yet Promising Oleaginous Yeasts for Fuel and Chemical Production. Trends Biotechnol 2020; 38:873-887. [DOI: 10.1016/j.tibtech.2020.02.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 02/08/2023]
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Ghosh S, Roy S. Novel integration of biohydrogen production with fungal biodiesel production process. BIORESOURCE TECHNOLOGY 2019; 288:121603. [PMID: 31176938 DOI: 10.1016/j.biortech.2019.121603] [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: 04/17/2019] [Revised: 05/31/2019] [Accepted: 06/02/2019] [Indexed: 06/09/2023]
Abstract
An integration of bio-H2 with fungal biodiesel production process was investigated. Highest cumulative H2 production of 3.3 ± 0.20 L L-1 was observed during media optimization using mixture design. Using optimized media composition, continuous H2 production at 0.2 h-1 dilution rate, showed highest H2 production rate, H2 yield and biomass yield of 1020 ± 23 mL L-1 h-1, 2.8 ± 0.1 mols mol-1 reducing sugar and 1.2 ± 0.06 g L-1, respectively. Using the spent media generated from the dark fermentation, oleaginous yeast cultivation was done. Highest biomass and total lipid yield of 6.4 ± 0.20 g L-1 and 0.46 ± 0.04 g g-1 was observed at initial 15% v/v inoculums strength, pH of 5, 1.5 L min-1 aeration rate and 25 °C temperature of cultivation, respectively. Energy recovery improved by 90.3% in integrated process when compared with single stage hydrogen production.
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Affiliation(s)
- Supratim Ghosh
- Porter School of the Environment and Earth Sciences, Tel Aviv University, Israel
| | - Shantonu Roy
- Department of Biotechnology, National Institute of Technology, Arunachal Pradesh 791112, India.
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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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Bessadok B, Santulli A, Breuck T, Sadok S. Species disparity response to mutagenesis of marine yeasts for the potential production of biodiesel. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:129. [PMID: 31139259 PMCID: PMC6530083 DOI: 10.1186/s13068-019-1459-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Among the third-generation biodiesel feed stock, oleaginous marine yeasts are the least studied microorganisms for such purpose. RESULTS Wild strains yeasts were isolated from various Tunisian marine sources including fish waste (Candida tenuis CtTun15, Debaryomyces hansenii DhTun2015, Trichosporon asahii TaTun15 and Yarrowia lipolytica YlTun15) and seawater (Rhodotorula mucilaginosa RmTun15). Following incubation with ethyl methanesulfonate (EMS: 75 mM) for various periods of time (T15, T30, T45, T60 min), the cell viability of these strains responded differentially according to yeast species. For instance, mutated CtTun15 did not survive after 30 min of EMS treatment; higher resistances were observed in DhTun2015 (45 min), in YlTun15, RmTun15 and in TaTun15 (60 min) but with significant decreased cell viabilities (survival rate: 6.02, 3.16, 11.22, 11.58, 7.70%, respectively). For all surviving mutated strains, the optima of biomass and lipid yields were detected after 96 h in YPD culture; but derived from strains submitted to different period of EMS incubation. In most mutated strains, the maximum biomass (BP) and lipid (LP) productivities coincided and were observed after 30 min of EMS incubation. Only CtTun15 showed different optima of BP and LP (after 30 min and 15 min, respectively). The fatty acids (FA) compositions considered essential in the prediction of biodiesel criteria; were highly affected by EMS mutagenesis. Essentially, 30- and 45-min EMS incubation induced the highest levels of PUFA and MUFA in YlTun15, RmTun15 and TaTun15 with non-significant differences in the different times. However, CtTun15 and DhTun2015 mutant strains responded differently, with the highest levels of MUFA observed following 15 and 45 min; and that of PUFA after 30 and 45 min, respectively. CONCLUSION The methyl-esterification of FA from the three mutated yeast strains (30 min-YlTun15, RmTun15 and TaTun15) yielded biodiesel with physical proprieties consistent with the International Standard System. However, investigations are needed for up-scaling biodiesel production.
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Affiliation(s)
- Boutheina Bessadok
- Blue Biotechnology and Aquatics Bioproducts Laboratory (B3Aqua), Institut National des Sciences et Technologies de la Mer – INSTM-Annexe La Goulette, 60 Port de Pêche, 2060 La Goulette, Tunisia
- Institut National Agronomique de Tunisie (INAT), 43 Avenue Charles Nicolle, 1082 Tunis, Tunisia
| | - Andrea Santulli
- Consorzio Universitario della Provincia di Trapani (CUPT), Lungomare Dante Alighieri, 91016 Casa Santa, TP Italy
| | - Thomas Breuck
- Fachgebiet Industrielle Biokatalyse, IBK Technische Universität München, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Saloua Sadok
- Blue Biotechnology and Aquatics Bioproducts Laboratory (B3Aqua), Institut National des Sciences et Technologies de la Mer – INSTM-Annexe La Goulette, 60 Port de Pêche, 2060 La Goulette, Tunisia
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Wang ZP, Wang QQ, Liu S, Liu XF, Yu XJ, Jiang YL. Efficient Conversion of Cane Molasses Towards High-Purity Isomaltulose and Cellular Lipid Using an Engineered Yarrowia lipolytica Strain in Fed-Batch Fermentation. Molecules 2019; 24:E1228. [PMID: 30925836 PMCID: PMC6480463 DOI: 10.3390/molecules24071228] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 03/19/2019] [Accepted: 03/26/2019] [Indexed: 12/29/2022] Open
Abstract
: Cane molasses is one of the main by-products of sugar refineries, which is rich in sucrose. In this work, low-cost cane molasses was introduced as an alternative substrate for isomaltulose production. Using the engineered Yarrowia lipolytica, the isomaltulose production reached the highest (102.6 g L-¹) at flask level with pretreated cane molasses of 350 g L-¹ and corn steep liquor of 1.0 g L-¹. During fed-batch fermentation, the maximal isomaltulose concentration (161.2 g L-¹) was achieved with 0.96 g g-¹ yield within 80 h. Simultaneously, monosaccharides were completely depleted, harvesting the high isomaltulose purity (97.4%) and high lipid level (12.2 g L-¹). Additionally, the lipids comprised of 94.29% C16 and C18 fatty acids, were proved suitable for biodiesel production. Therefore, the bioprocess employed using cane molasses in this study was low-cost and eco-friendly for high-purity isomaltulose production, coupling with valuable lipids.
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Affiliation(s)
- Zhi-Peng Wang
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China.
| | - Qin-Qing Wang
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou, Guangdong 510006, China.
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China.
| | - Song Liu
- Development & Reform Bureau, West Coast New Area, Qingdao, Shandong 266000, China.
| | - Xiao-Fang Liu
- Key Laboratory of Sustainable Development of Polar Fishery, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China.
| | - Xin-Jun Yu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China.
| | - Yun-Lin Jiang
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou, Guangdong 510006, China.
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