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Silva TP, Paixão SM, Tavares J, Paradela F, Crujeira T, Roseiro JC, Alves L. Streamlining the biodesulfurization process: development of an integrated continuous system prototype using Gordonia alkanivorans strain 1B. RSC Adv 2024; 14:725-742. [PMID: 38173596 PMCID: PMC10758933 DOI: 10.1039/d3ra07405f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024] Open
Abstract
Biodesulfurization is a biotechnological process that uses microorganisms as biocatalysts to actively remove sulfur from fuels. It has the potential to be cleaner and more efficient than the current industrial process, however several bottlenecks have prevented its implementation. Additionally, most works propose models based on direct cultivation on fuel, or batch production of biocatalysts followed by a processing step before application to batch biodesulfurization, which are difficult to replicate at a larger scale. Thus, there is a need for a model that can be adapted to a refining process, where fuel is being continuously produced to meet consumer needs. The main goal of this work was to develop the first bench-scale continuous biodesulfurization system that integrates biocatalyst production, biodesulfurization and fuel separation, into a single continuous process, taking advantage of the method for the continuous production of the biodesulfurization biocatalysts previously established. This system eliminates the need to process the biocatalysts and facilitates fuel separation, while mitigating some of the process bottlenecks. First, using the bacterium Gordonia alkanivorans strain 1B, continuous culture conditions were optimized to double biocatalyst production, and the produced biocatalysts were applied in batch biphasic biodesulfurization assays for a better understanding of the influence of different factors. Then, the novel integrated system was developed and evaluated using a model fuel (n-heptane + dibenzothiophene) in continuous biodesulfurization assays. With this system strain 1B surpassed its highest biodesulfurization rate, reaching 21 μmol h-1 g-1. Furthermore, by testing a recalcitrant model fuel, composed of n-heptane with dibenzothiophene and three alkylated derivatives (with 109 ppm of sulfur), 72% biodesulfurization was achieved by repeatedly passing the same fuel through the system, maintaining a constant response throughout sequential biodesulfurization cycles. Lastly, the system was also tested with real fuels (used tire/plastic pyrolysis oil; sweet and sour crude oils), revealing increased desulfurization activity. These results highlight the potential of the continuous biodesulfurization system to accelerate the transition from bench to commercial scale, contributing to the development of biodesulfurization biorefineries, centered on the valorization of sulfur-rich residues/biomasses for energy production.
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Affiliation(s)
- Tiago P Silva
- LNEG - Laboratório Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias Estrada do Paço do Lumiar, 22 1649-038 Portugal
| | - Susana M Paixão
- LNEG - Laboratório Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias Estrada do Paço do Lumiar, 22 1649-038 Portugal
| | - João Tavares
- LNEG - Laboratório Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias Estrada do Paço do Lumiar, 22 1649-038 Portugal
| | - Filipe Paradela
- LNEG - Laboratório Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias Estrada do Paço do Lumiar, 22 1649-038 Portugal
| | - Teresa Crujeira
- LNEG - Laboratório Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias Estrada do Paço do Lumiar, 22 1649-038 Portugal
| | - José C Roseiro
- LNEG - Laboratório Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias Estrada do Paço do Lumiar, 22 1649-038 Portugal
| | - Luís Alves
- LNEG - Laboratório Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias Estrada do Paço do Lumiar, 22 1649-038 Portugal
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Serino I, Squillaci G, Errichiello S, Carbone V, Baraldi L, La Cara F, Morana A. Antioxidant Capacity of Carotenoid Extracts from the Haloarchaeon Halorhabdus utahensis. Antioxidants (Basel) 2023; 12:1840. [PMID: 37891919 PMCID: PMC10603985 DOI: 10.3390/antiox12101840] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023] Open
Abstract
Herein, we report on the production, characterization, and antioxidant power assessment of carotenoids from the haloarchaeon Halorhabdus utahensis. It was grown at 37 °C and 180 rpm agitation in halobacteria medium supplemented with glucose, fructose, and xylose, each at concentrations of 0.2%, 1%, and 2%, and the carotenoid yield and composition were investigated. The microorganism produced the carotenoids under all the conditions tested, and their amount followed the order glucose < xylose < fructose. The highest yield was achieved in 2% fructose growth medium with 550.60 ± 7.91 μg/g dry cell and 2428.15 ± 49.33 μg/L. Separation and identification of the carotenoids were performed by RP-HPLC and HPLC/APCI-ITMSn. Bacterioruberin was the main carotenoid detected and accounted for 60.6%, 56.4%, and 58.9% in 2% glucose, 1% xylose, and 2% fructose extracts, respectively. Several geometric isomers of bacterioruberin were distinguished, and representatives of monoanhydrobacterioruberin, and bisanhydrobacterioruberin were also detected. The assignment to cis-isomers was attempted through analysis of the UV/Vis spectra, intensity of cis peaks, and spectral fine structures. The extracts exhibited superoxide scavenging activity higher than butylhydroxytoluene, ascorbic acid, and Trolox, selected as antioxidant references. The anti-hyaluronidase capacity was investigated, and the 2% fructose extract showed the highest activity reaching 90% enzyme inhibition with 1.5 μg. The overall data confirm that Hrd. utahensis can be regarded as an interesting source of antioxidants that can find applications in the food and cosmetic sectors.
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Affiliation(s)
- Ismene Serino
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, Via Costantinopoli 16, 80138 Naples, Italy;
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (G.S.); (S.E.); (F.L.C.)
| | - Giuseppe Squillaci
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (G.S.); (S.E.); (F.L.C.)
| | - Sara Errichiello
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (G.S.); (S.E.); (F.L.C.)
| | - Virginia Carbone
- Institute of Food Sciences, National Research Council of Italy (CNR), Via Roma 64, 83100 Avellino, Italy;
| | - Lidia Baraldi
- Institute of Experimental Endocrinology and Oncology “Gaetano Salvatore”, National Research Council of Italy (CNR), Via S. Pansini 5, 80131 Naples, Italy;
| | - Francesco La Cara
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (G.S.); (S.E.); (F.L.C.)
| | - Alessandra Morana
- Research Institute on Terrestrial Ecosystems, National Research Council of Italy (CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (G.S.); (S.E.); (F.L.C.)
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Characterization and Bioactive Potential of Carotenoid Lutein from Gordonia rubripertncta GH-1 Isolated from Traditional Pixian Douban. Foods 2022; 11:foods11223649. [PMID: 36429243 PMCID: PMC9689138 DOI: 10.3390/foods11223649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/07/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
The characterization and bioactive properties of carotenoid produced by Gordonia rubripertincta GH-1 originating from Pixian Douban (PXDB), the Chinese traditional condiment, was investigated. The produced and purified yellow pigment was characterized by ultraviolet-visible spectroscopy (UV-Vis), Fourier transformed infrared (FTIR), nuclear magnetic resonance (NMR), and high-resolution mass spectrometry (HRMS), and was identified as carotenoid lutein. Additionally, the bioactive activity of lutein from G. rubripertincta GH-1 was evaluated by measuring the free radical scavenging capacity in vitro and feeding zebrafish lutein through aqueous solution. The results showed that the carotenoid lutein had strong antioxidant capacity and a protective effect on zebrafish eye cells, which could inhibit the apoptosis of eye cells in a concentration dependent manner. The results suggested that carotenoid lutein from G. rubripertincta GH-1 could be utilized as a potential source of natural antioxidants or functional additives for food/pharmaceutical industries.
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Dufossé L. Back to nature, microbial production of pigments and colorants for food use. ADVANCES IN FOOD AND NUTRITION RESEARCH 2022; 102:93-122. [PMID: 36064297 DOI: 10.1016/bs.afnr.2022.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Pigments-producing microorganisms are quite common in Nature. However, there is a long journey from the Petri dish to the market place. Twenty-five years ago, scientists wondered if such productions would remain a scientific oddity or become an industrial reality. The answer is not straightforward as processes using fungi, bacteria or yeasts can now indeed provide carotenoids or phycocyanin at an industrial level. Another production factor to consider is peculiar as Monascus red colored food is consumed by more than one billion Asian people; however, still banned in many other countries. European and American consumers will follow as soon as "100%-guaranteed" toxin-free strains (molecular engineered strains, citrinin gene deleted strains) will be developed and commercialized at a world level. For other pigmented biomolecules, some laboratories and companies invested and continue to invest a lot of money as any combination of new source and/or new pigment requires a lot of experimental work, process optimization, toxicological studies, and regulatory approval. Time will tell whether investments in pigments such as azaphilones or anthraquinones were justified. Future trends involve combinatorial engineering, gene knock-out, and the production of niche pigments not found in plants such as C50 carotenoids or aryl carotenoids.
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Affiliation(s)
- Laurent Dufossé
- Laboratoire de Chimie et Biotechnologie des Produits Naturels (CHEMBIOPRO), Université de La Réunion, ESIROI Agroalimentaire, Ile de La Réunion, France.
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A New Biosurfactant/Bioemulsifier from Gordonia alkanivorans Strain 1B: Production and Characterization. Processes (Basel) 2022. [DOI: 10.3390/pr10050845] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Biosurfactants and bioemulsifiers (BS/BE) are naturally synthesized molecules, which can be used as alternatives to traditional detergents. These molecules are commonly produced by microorganisms isolated from hydrocarbon-rich environments. Gordonia alkanivorans strain 1B was originally found in such an environment, however little was known about its abilities as a BS/BE producer. The goal of this work was to access the potential of strain 1B as a BS/BE producer and perform the initial characterization of the produced compounds. It was demonstrated that strain 1B was able to synthesize lipoglycoprotein compounds with BS/BE properties, both extracellularly and adhered to the cells, without the need for a hydrophobic inducer, producing emulsion in several different hydrophobic phases. Using a crude BS/BE powder, the critical micelle concentration was determined (CMC = 16.94 mg/L), and its capacity to reduce the surface tension to a minimum of 35.63 mN/m was demonstrated, surpassing many commercial surfactants. Moreover, after dialysis, emulsification assays revealed an activity similar to that of Triton X-100 in almond and sunflower oils. In benzene, the E24 value attained was 83.45%, which is 30% greater than that of the commercial alternative. The results obtained highlight for the presence of promising novel BS/BE produced by strain 1B.
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P. Silva T, M. Paixão S, S. Fernandes A, C. Roseiro J, Alves L. New Insights on Carotenoid Production by Gordonia alkanivorans Strain 1B. Physiology (Bethesda) 2022. [DOI: 10.5772/intechopen.103919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Gordonia alkanivorans strain 1B is a desulfurizing bacterium and a hyper-pigment producer. Most carotenoid optimization studies have been performed with light, but little is still known on how carbon/sulfur-source concentrations influence carotenoid production under darkness. In this work, a surface response methodology based on a two-factor Doehlert distribution (% glucose in a glucose/fructose 10 g/L mixture; sulfate concentration) was used to study carotenoid and biomass production without light. These responses were then compared to those previously obtained under light. Moreover, carbon consumption was also monitored, and different metabolic parameters were further calculated. The results indicate that both light and glucose promote slower growth rates, but stimulate carotenoid production and carbon conversion to carotenoids and biomass. Fructose induces higher growth rates, and greater biomass production at 72 h; however, its presence seems to inhibit carotenoid production. Moreover, although at a much lower yield than under light, results demonstrate that under darkness the highest carotenoid production can be achieved with 100% glucose (10 g/L), ≥27 mg/L sulfate, and high growth time (>216 h). These results give a novel insight into the metabolism of strain 1B, highlighting the importance of culture conditions optimization to increase the process efficiency for carotenoid and/or biomass production.
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Liu Y, Wu J, Liu Y, Wu X. Biological Process of Alkane Degradation by Gordonia sihwaniensis. ACS OMEGA 2022; 7:55-63. [PMID: 35036678 PMCID: PMC8756779 DOI: 10.1021/acsomega.1c01708] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Indexed: 05/19/2023]
Abstract
With the development of the petroleum industry, oil pollution has become widespread. It is harmful to the digestive, immune, reproductive, and nervous systems of fishes, wild animals, and humans, causing severe threats to ecological safety and human health. Gordonia has increasingly attracted attention in the treatment of alkane pollution for its outstanding performance against hydrophobic refractory substances. However, the lack of knowledge about alkane uptake and degradation restricts the application of gordonia. In this paper, we studied the strain lys1-3 of Gordonia sihwaniensis isolated from coal chemical wastewater, which showed good alkane degradation performance by lys1-3. It is found that stimulated by an alkane, lys1-3 secreted biosurfactants, which emulsified large alkane particles to smaller particles. By active transport, unmodified alkane was transferred into cells and produced a large amount of acid, which was secreted out of the cells.
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Affiliation(s)
- Yinsong Liu
- Laboratory
of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, China
| | - Jingchun Wu
- Laboratory
of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, China
| | - Yikun Liu
- Laboratory
of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, China
| | - Xiaolin Wu
- PetroChina
Daqing Oilfield Co. Ltd., Institute of Exploration
and Development, Daqing 163002, China
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8
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López GD, Álvarez-Rivera G, Carazzone C, Ibáñez E, Leidy C, Cifuentes A. Bacterial Carotenoids: Extraction, Characterization, and Applications. Crit Rev Anal Chem 2021; 53:1239-1262. [PMID: 34915787 DOI: 10.1080/10408347.2021.2016366] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Natural carotenoids are secondary metabolites that exhibit antioxidant, anti-inflammatory, and anti-cancer properties. These types of compounds are highly demanded by pharmaceutical, cosmetic, nutraceutical, and food industries, leading to the search for new natural sources of carotenoids. In recent years, the production of carotenoids from bacteria has become of great interest for industrial applications. In addition to carotenoids with C40-skeletons, some bacteria have the ability to synthesize characteristic carotenoids with C30-skeletons. In this regard, a great variety of methodologies for the extraction and identification of bacterial carotenoids has been reported and this is the first review that condenses most of this information. To understand the diversity of carotenoids from bacteria, we present their biosynthetic origin in order to focus on the methodologies employed in their extraction and characterization. Special emphasis has been made on high-performance liquid chromatography-mass spectrometry (HPLC-MS) for the analysis and identification of bacterial carotenoids. We end up this review showing their potential commercial use. This review is proposed as a guide for the identification of these metabolites, which are frequently reported in new bacteria strains.
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Affiliation(s)
- Gerson-Dirceu López
- Chemistry Department, Laboratory of Advanced Analytical Techniques in Natural Products (LATNAP), Universidad de los Andes, Bogotá, Colombia
- Physics Department, Laboratory of Biophysics, Universidad de los Andes, Bogotá, Colombia
- Laboratory of Foodomics, Institute of Food Science Research (CIAL), CSIC, Madrid, Spain
| | | | - Chiara Carazzone
- Chemistry Department, Laboratory of Advanced Analytical Techniques in Natural Products (LATNAP), Universidad de los Andes, Bogotá, Colombia
| | - Elena Ibáñez
- Laboratory of Foodomics, Institute of Food Science Research (CIAL), CSIC, Madrid, Spain
| | - Chad Leidy
- Physics Department, Laboratory of Biophysics, Universidad de los Andes, Bogotá, Colombia
| | - Alejandro Cifuentes
- Laboratory of Foodomics, Institute of Food Science Research (CIAL), CSIC, Madrid, Spain
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9
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Foong LC, Loh CWL, Ng HS, Lan JCW. Recent development in the production strategies of microbial carotenoids. World J Microbiol Biotechnol 2021; 37:12. [DOI: 10.1007/s11274-020-02967-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/24/2020] [Indexed: 01/09/2023]
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10
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Silva TP, Alves L, Paixão SM. Effect of dibenzothiophene and its alkylated derivatives on coupled desulfurization and carotenoid production by Gordonia alkanivorans strain 1B. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 270:110825. [PMID: 32501236 DOI: 10.1016/j.jenvman.2020.110825] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/14/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
Nowadays, the production of green transportation fuels is essential for a healthy life and environment. Effective and complete removal of organosulfur recalcitrant compounds from fuel oils is crucial to meet the stringent requirements of sulfur standards. However, the industry's solution (Hydrodesulfurization, HDS) is not effective in the removal of complex sulfur heterocyclic hydrocarbons. Thus, the development of more efficient and ecofriendly/sustainable desulfurization methods is critical, as either an alternative or a complement to HDS, foreseeing the production of ultra-low sulfur fuels (ULSF). Among the desulfurization techniques available, microbial desulfurization of organosulfur hydrocarbons (biodesulfurization, BDS) is attracting great attention. BDS is carried out at mild operation conditions, making it energetically cheaper and more ecofriendly, since it does not require hydrogen and produces far less greenhouse gases emission than HDS. In this context, the behavior of Gordonia alkanivorans strain 1B, a desulfurizing bacterium and hyper-pigment producer, was evaluated in the presence of four sulfur sources common in fuel oils: dibenzothiophene (DBT); 4-mDBT; 4,6-dmDBT and 4,6-deDBT (single/mixed), in terms of both desulfurization rate and overall carotenoid production. Simultaneously, the influence of the carbon source used (fructose vs glucose) on the overall effectiveness of the coupled bioprocesses was also assessed. The results obtained highlight the potential of strain 1B to desulfurize all the tested recalcitrant compounds and simultaneously produce carotenoids. However, the highest BDS values were observed for 4,6-deDBT (5.75 μmol/g (DCW)/h) and for the mix of DBTs (5.20 μmol/g (DCW)/h), when fructose was used as carbon source. Indeed, when the mixture of DBTs ("model oil surrogate") was desulfurized by cells growing in fructose both desulfurization rate and total pigments amount were higher than those observed for glucose growing cells. Moreover, under these conditions, the strain 1B was able to produce high added-value carotenoids, namely astaxanthin, lutein and canthaxanthin. Hence, these results are promising when aiming to achieve a scale-up scenario. In fact, the inclusion of the production of high added-value products within a BDS process targeting ULSF may be a sustainable way to turn its scale-up economically viable.
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Affiliation(s)
- Tiago P Silva
- LNEG - Instituto Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias, Estrada do Paço do Lumiar, 22, 1649-038, Lisboa, Portugal
| | - Luís Alves
- LNEG - Instituto Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias, Estrada do Paço do Lumiar, 22, 1649-038, Lisboa, Portugal.
| | - Susana M Paixão
- LNEG - Instituto Nacional de Energia e Geologia, IP, Unidade de Bioenergia e Biorrefinarias, Estrada do Paço do Lumiar, 22, 1649-038, Lisboa, Portugal.
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11
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Gmoser R, Ferreira JA, Taherzadeh MJ, Lennartsson PR. Post-treatment of Fungal Biomass to Enhance Pigment Production. Appl Biochem Biotechnol 2019; 189:160-174. [PMID: 30957195 PMCID: PMC6689318 DOI: 10.1007/s12010-019-02961-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 01/30/2019] [Indexed: 11/25/2022]
Abstract
A new post-treatment method of fungal biomass after fermentation is revealed. The post-treatment strategy was utilized to produce pigments as an additional valuable metabolite. Post-treatment included incubation at 95% relative humidity where the effects of harvesting time, light, and temperature were studied. Pigment-producing edible filamentous fungus Neurospora intermedia cultivated on ethanol plant residuals produced 4 g/L ethanol and 5 g/L fungal biomass. Harvesting the pale biomass after 48 h submerged cultivation compared to 24 h or 72 h increased pigmentation in the post-treatment step with 35% and 48%, respectively. The highest pigment content produced, 1.4 mg/g dry fungal biomass, was obtained from washed biomass treated in light at 35 °C whereof the major impact on pigmentation was from washed biomass. Moreover, post-treated biomass contained 50% (w/w) crude protein. The post-treatment strategy successfully adds pigments to pre-obtained biomass. The pigmented fungal biomass can be considered for animal feed applications for domestic animals.
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Affiliation(s)
- Rebecca Gmoser
- Swedish Centre for Resource Recovery, University of Borås, Allégatan 1, 503 32, Borås, Sweden.
| | - Jorge A Ferreira
- Swedish Centre for Resource Recovery, University of Borås, Allégatan 1, 503 32, Borås, Sweden
| | - Mohammad J Taherzadeh
- Swedish Centre for Resource Recovery, University of Borås, Allégatan 1, 503 32, Borås, Sweden
| | - Patrik R Lennartsson
- Swedish Centre for Resource Recovery, University of Borås, Allégatan 1, 503 32, Borås, Sweden
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12
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Pacheco M, Paixão SM, Silva TP, Alves L. On the road to cost-effective fossil fuel desulfurization byGordonia alkanivoransstrain 1B. RSC Adv 2019; 9:25405-25413. [PMID: 35530089 PMCID: PMC9070030 DOI: 10.1039/c9ra03601f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/07/2019] [Indexed: 11/21/2022] Open
Abstract
Biodesulfurization (BDS) is an ecofriendly process that uses microorganisms to efficiently remove sulfur from fossil fuels. To make the BDS process economically competitive with the deep hydrodesulfurization process, which is currently used in the oil industry, it is necessary to improve several factors. One crucial limitation to be overcome, common within many other biotechnological processes, is the cost of the culture medium. Therefore, an important line of work to make BDS scale-up less costly is the optimization of the culture medium composition aiming to reduce operating expenses and maximize biocatalyst production. In this context, the main goal of this study was on the minimization of inorganic key components of sulfur-free mineral (SFM) medium in order to get the maximal production of efficient desulfurizing biocatalysts. Hence, a set of assays was carried out to develop an optimal culture medium containing minimal amounts of nitrogen (N) and magnesium (Mg) sources and trace elements solution (TES). These assays allowed the design of a SFMM (SFM minimum) medium containing 85% N-source, 25% Mg-source and 25% TES. Further validation consisted of testing this minimized medium using two carbon sources: the commercial C-source (glucose + fructose) versus Jerusalem artichoke juice (JAJ) as a cheaper alternative. SFMM medium allowed microbial cells to almost duplicate their specific desulfurization rate (q2-HBP) for both tested C-sources, namely from 2.15 to 3.39 μmoL g−1 (DCW) h−1 for Fru + Glu and from 1.91 to 3.58 μmoL g−1 (DCW) h−1 for JAJ, achieving a similar net 2-hydroxybiphenyl produced per g of consumed sugar (∼17 μmoL g−1). These results point out the great advantage of using cheaper culture medium that in addition enhances the bioprocess effectiveness, paving the way to a sustainable scale-up for fossil fuel BDS. The utilization of desulfurizing microorganisms that can grow in low nutrient culture media without vitamins and other growth promoters (e.g. yeast extract, peptone) is an advantage for BDS upgrade since it may reduce the biocatalyst production costs significantly![]()
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Affiliation(s)
- Marta Pacheco
- LNEG – Instituto Nacional de Energia e Geologia
- IP
- Unidade de Bioenergia
- Portugal
| | - Susana M. Paixão
- LNEG – Instituto Nacional de Energia e Geologia
- IP
- Unidade de Bioenergia
- Portugal
| | - Tiago P. Silva
- LNEG – Instituto Nacional de Energia e Geologia
- IP
- Unidade de Bioenergia
- Portugal
| | - Luís Alves
- LNEG – Instituto Nacional de Energia e Geologia
- IP
- Unidade de Bioenergia
- Portugal
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13
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Mussagy CU, Winterburn J, Santos-Ebinuma VC, Pereira JFB. Production and extraction of carotenoids produced by microorganisms. Appl Microbiol Biotechnol 2018; 103:1095-1114. [PMID: 30560452 DOI: 10.1007/s00253-018-9557-5] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 02/07/2023]
Abstract
Carotenoids are a group of isoprenoid pigments naturally synthesized by plants and microorganisms, which are applied industrially in food, cosmetic, and pharmaceutical product formulations. In addition to their use as coloring agents, carotenoids have been proposed as health additives, being able to prevent cancer, macular degradation, and cataracts. Moreover, carotenoids may also protect cells against oxidative damage, acting as an antioxidant agent. Considering the interest in greener and sustainable industrial processing, the search for natural carotenoids has increased over the last few decades. In particular, it has been suggested that the use of bioprocessing technologies can improve carotenoid production yields or, as a minimum, increase the efficiency of currently used production processes. Thus, this review provides a short but comprehensive overview of the recent biotechnological developments in carotenoid production using microorganisms. The hot topics in the field are properly addressed, from carotenoid biosynthesis to the current technologies involved in their extraction, and even highlighting the recent advances in the marketing and application of "microbial" carotenoids. It is expected that this review will improve the knowledge and understanding of the most appropriate and economic strategies for a biotechnological production of carotenoids.
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Affiliation(s)
- Cassamo Ussemane Mussagy
- Department of Bioprocesses and Biotechnology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara-Jaú/Km 01, Campos Ville, Araraquara, SP, 14800-903, Brazil
| | - James Winterburn
- School of Chemical Engineering and Analytical Science, The University of Manchester, Manchester, UK
| | - Valéria Carvalho Santos-Ebinuma
- Department of Bioprocesses and Biotechnology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara-Jaú/Km 01, Campos Ville, Araraquara, SP, 14800-903, Brazil.
| | - Jorge Fernando Brandão Pereira
- Department of Bioprocesses and Biotechnology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara-Jaú/Km 01, Campos Ville, Araraquara, SP, 14800-903, Brazil
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Sowani H, Kulkarni M, Zinjarde S. An insight into the ecology, diversity and adaptations of Gordonia species. Crit Rev Microbiol 2017; 44:393-413. [PMID: 29276839 DOI: 10.1080/1040841x.2017.1418286] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The bacterial genus Gordonia encompasses a variety of versatile species that have been isolated from a multitude of environments. Gordonia was described as a genus about 20 years ago, and to date, 39 different species have been identified. Gordonia is recognized for symbiotic associations with multiple hosts, including aquatic (marine and fresh water) biological forms and terrestrial invertebrates. Some Gordonia species isolated from clinical specimens are known to be opportunistic human pathogens causing secondary infections in immunocompromised and immunosuppressive individuals. They are also predominant in mangrove ecosystems and terrestrial sites. Members of the genus Gordonia are ecologically adaptable and show marked variations in their properties and products. They generate diverse bioactive compounds and produce a variety of extracellular enzymes. In addition, production of surface active compounds and carotenoid pigments allows this group of microorganisms to grow under different conditions. Several isolates from water and soil have been implicated in bioremediation of different environments and plant associated species have been explored for agricultural applications. This review highlights the prevalence of the members of this versatile genus in diverse environments, details its associations with living forms, summarizes the biotechnologically relevant products that can be obtained and discusses the salient genomic features that allow this Actinomycete to survive in different ecological niches.
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Affiliation(s)
- Harshada Sowani
- a Department of Chemistry , Biochemistry Division Savitribai Phule Pune University , Pune , India
| | - Mohan Kulkarni
- a Department of Chemistry , Biochemistry Division Savitribai Phule Pune University , Pune , India
| | - Smita Zinjarde
- b Institute of Bioinformatics and Biotechnology , Savitribai Phule Pune University , Pune , India.,c Department of Microbiology , Savitribai Phule Pune University , Pune , India
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15
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Influence of culture conditions towards optimal carotenoid production by Gordonia alkanivorans strain 1B. Bioprocess Biosyst Eng 2017; 41:143-155. [DOI: 10.1007/s00449-017-1853-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 10/10/2017] [Indexed: 01/27/2023]
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