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Agogué MC, Loisel C, Gonçalves O, Legrand J, Saint‐Jalmes S, Arhaliass A. Multi‐scale study of the structuration of candle blends with a high content of vegetable fats to replace paraffins: Effect of 12‐hydroxystearic acid content. J AM OIL CHEM SOC 2022. [DOI: 10.1002/aocs.12625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | | | - Jack Legrand
- Nantes University, ONIRIS, CNRS, UMR6144 Saint‐Nazaire France
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Ben Hamouda M, Kacem A, Achour L, Krichen Y, Legrand J, Grizeau D, Dupre C. Comparative study on photosynthetic and antioxidant activities of Haematococcus pluvialis vegetative and resting cells; UVA light-induced stimulation. J Appl Microbiol 2022; 132:4338-4348. [PMID: 35332635 DOI: 10.1111/jam.15540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 11/27/2022]
Abstract
AIM This study aims to determine how photosynthetic and antioxidant activities vary in vegetative and dormant cells of Haematococcus pluvialis subjected to stresses in conditions representative of industrial productions of microalgae under solar light. METHODS AND RESULTS The effects of short-term oxidative treatments were examined on photosynthetic and antioxidant activities of Haematococcus pluvialis vegetative and resting cells. The vegetative cells have 1.6 times higher levels of phenolic compounds, but 1.7 times less catalase, ascorbate peroxidase, and superoxide dismutase activities than the astaxanthin-enriched resting cells. Mainly, a UVA dose of 4 J cm-2 induced increases in photosystem II electron transport rates (ETRmax) (+15%), phenolic compounds (+15%), astaxanthin (+ 48%), catalase (+45%), and superoxide dismutase (+30%) activities in vegetative cells. CONCLUSION The UVA-dose strongly stimulates the photosynthetic and antioxidant activities of vegetative cells, but only the accumulation of astaxanthin in resting cells. SIGNIFICANCE AND IMPACT OF THE STUDY These preliminary results show that oxidative stresses at sub-lethal levels can stimulate the activities of microalgae. Further investigations are needed to estimate the real influence on metabolite productivities in industrial production conditions.
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Affiliation(s)
- Meriem Ben Hamouda
- Nantes University, Oniris, CNRS, GEPEA, UMR 6144, Saint-Nazaire, France.,Research Laboratory LR14ES06: Integrative Biology and Bioresources Valorization BIOLIVAL, Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia.,BioAlguesTunisie, El Alia, Ksour Essef, Mahdia, Tunisia
| | - Adnane Kacem
- Research Laboratory LR14ES06: Integrative Biology and Bioresources Valorization BIOLIVAL, Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia
| | - Lotfi Achour
- Research Laboratory LR14ES06: Integrative Biology and Bioresources Valorization BIOLIVAL, Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia
| | | | - Jack Legrand
- Nantes University, Oniris, CNRS, GEPEA, UMR 6144, Saint-Nazaire, France
| | - Dominique Grizeau
- Nantes University, Oniris, CNRS, GEPEA, UMR 6144, Saint-Nazaire, France
| | - Catherine Dupre
- Nantes University, Oniris, CNRS, GEPEA, UMR 6144, Saint-Nazaire, France
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Hosni M, Hammoudi M, Si‐Ahmed E, Legrand J, Lamine D. Single and two‐phase flows in a horizontal pipe with a Kenics static mixer: Effect of pressure drop on mixing. CAN J CHEM ENG 2022. [DOI: 10.1002/cjce.24402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Massinissa Hosni
- USTHB, Faculté de physique, LMFTA 16111 Bab Ezzouar, Alger Algeria
| | - M'hamed Hammoudi
- USTHB, Faculté de physique, LMFTA 16111 Bab Ezzouar, Alger Algeria
| | | | - Jack Legrand
- University of Nantes, ONIRIS, CNRS, GEPEA, UMR6144 Saint‐Nazaire France
| | - Douib Lamine
- USTHB, Faculté de physique, LMFTA 16111 Bab Ezzouar, Alger Algeria
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Phuong H, Massé A, Dumay J, Vandanjon L, Mith H, Legrand J, Arhaliass A. Enhanced Liberation of Soluble Sugar, Protein, and R-Phycoerythrin Under Enzyme-Assisted Extraction on Dried and Fresh Gracilaria gracilis Biomass. Front Chem Eng 2022. [DOI: 10.3389/fceng.2022.718857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This study aims to investigate the bio-refinery process through an enzyme-assisted extraction (EAE) on freeze-dried and fresh macroalgae Gracilaria gracilis for the release of water-soluble components (R-phycoerythrin, proteins, and sugar). Three enzymes, cellulase, protease, and enzyme cocktail (mixture of cellulase and protease), were applied in the study. Results showed that freeze-dried biomass yielded the highest target components in the presence of enzyme cocktail while a single enzyme was better with fresh biomass, either protease for the release of R-PE and protein or cellulase for sugar. The extraction of protein and sugar was improved by 43% and 57%, respectively, from fresh biomass compared to dried biomass. The difference of biomass status was shown to affect the required enzyme and recovery yield during the extraction process. Employing an enzyme cocktail on freeze-dried biomass boosted the extraction yield, which was probably due to the complementary effect between enzymes. On the other hand, single enzyme worked better on fresh biomass, giving economic benefits (enzyme limitation and drying stage) for further implementation of the bio-refinery process. Thus, biomass treatment (fresh or freeze-dried) and enzyme-type determined the efficiency of enzyme-assisted extraction according to the target components.
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Nabila Ouazib, Salhi Y, El-Khider SI-Ahmed, Legrand J, Arhaliass A, Degrez G. Numerical Simulation of Taylor–Couette Flows with Rotating Outer Wall Using a Hybrid Spectral/Finite Element Method. Theor Found Chem Eng 2021. [DOI: 10.1134/s0040579521060087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Galbraith J, Legrand J, Muller N, Togher K, Matigian N, Baz B, Morahan G, Walker G, Morrison M, Khosrotehrani K. 223 Murine cutaneous microbiota composition is largely mouse strain determined with microbiota changes during acute wound healing showing mouse strain specific responses. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Mangi KH, Larbi Z, Legrand J, Pruvost J, Si-Ahmed EK. Passive thermal regulation approach for Algofilm © photobioreactor through phase change. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2021.02.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Seghiri R, Legrand J, Hsissou R, Essamri A. Comparative study of the impact of conventional and unconventional drying processes on phycobiliproteins from Arthrospira platensis. ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102165] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
From the cell to the photobioreactor and to the industrial exploitation of microalgae, through the controlled experiments and modelling.
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Affiliation(s)
- Jack Legrand
- University of Nantes
- CNRS, ONIRIS, GEPEA, UMR6144
- 44602 Saint-Nazaire Cedex
- France
| | - Arnaud Artu
- Total, Direction générale Raffinage-Chimie
- Division Biofuels
- Tour Coupole
- 92078 Paris La Défense
- France
| | - Jérémy Pruvost
- University of Nantes
- CNRS, ONIRIS, GEPEA, UMR6144
- 44602 Saint-Nazaire Cedex
- France
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Hoeniges J, Kandilian R, Zhang C, Pruvost J, Legrand J, Grizeau D, Pilon L. Effect of colony formation on light absorption by Botryococcus braunii. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Sevin F, Legrand J, Perez C, Soudain G, Joulia S, Lesaine E, Saillour-Glenisson F. Méthodes de reconstruction des parcours de soins : exemple de l’infarctus du myocarde – Registres REANIM et ACIRA. Rev Epidemiol Sante Publique 2020. [DOI: 10.1016/j.respe.2020.03.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Pascart T, Carpentier P, Norberciak L, Legrand J, Houvenagel E, Becce F, Budzik JF. OP0175 IDENTIFYING PERIPHERAL VASCULAR MONOSODIUM URATE CRYSTAL DEPOSITION WITH DUAL-ENERGY CT: FACT OR FICTION? THE VASCURATE STUDY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:The close relationship between gout and cardiovascular diseases is well established. A growing hypothesis explaining this association would be that monosodium urate (MSU) crystals are deposited within vessel walls. Dual-energy computed tomography (DECT) can identify and quantify MSU crystal deposition in soft tissues. It remains unclear whether vascular spots exhibiting DECT attenuation characteristics of MSU are artefacts or true MSU crystal deposits.Objectives:The objectives of this study were to determine whether the presence of peripheral vascular MSU crystal deposition identified with DECT is associated with the extent of MSU deposits in joint soft tissues, and if this association persists over time under urate-lowering therapy.Methods:Patients with a clinical suspicion or established gout diagnosis prospectively underwent DECT for identification and quantification of the MSU crystal burden in their knees and feet. Some of these patients were also enrolled in the GOUT-DECTUS longitudinal study, and thus underwent follow-up DECT scans of their knees and feet at 6, 12 and 24 months. DECT scans were examined for the presence of vascular spots ≥0.01 cm3 classified as MSU crystal deposits according to the default post-processing settings. Multiple linear regressions adjusting on serum urate levels and gout diagnosis were implemented to determine the association between DECT MSU crystal volume in joint soft tissues, and the presence of vascular MSU deposits. Mixed linear models were used to compare DECT volumes of MSU crystal deposition in soft tissues between vascular MSU positive and negative patients during follow-up.Results:A total of 169 patients were included, of which 140 had a final diagnosis of gout, including 15 also included in the longitudinal study. Patients were mostly male (78.8%) and were 65.5 ± 14.6 years old. Among gout patients, disease duration was 9.3 ± 9.9 years and 56.5% were urate lowering therapy-naive. A total of 11/29 (37.9%) controls and 40/140 (28.6%) gout patients presented with a least one vascular spot of DECT MSU deposition, with an average volume of 0.02 ± 0.02 cm3, and all subjects also presented at least one vascular calcification. In the feet, patients positive for vascular DECT MSU crystal deposition had an MSU volume of 3.81 ± 10.06 cm3 in joint soft tissues, compared with 1.85 ± 7.72 cm3 for those without vascular MSU deposition (p=0.018). In the knees, patients with vascular MSU deposition had an MSU crystal volume of 6.03 ± 24.13 cm3 in joint soft tissues, compared with 0.83 ± 2.88 cm3 for those without vascular evidence of MSU deposition. In the longitudinal subgroup analysis, coefficients of the fixed effects for the presence of vascular MSU deposits on the MSU crystal volume in joint soft tissues was 0.4 (p=0.35) in the feet and 1.21 (p=0.03) in the knees. The presence of vascular DECT MSU deposits was associated with a 3.4-fold increase in MSU crystal volume in knee joint soft tissues throughout follow-up.Conclusion:This study suggests that some vascular spots identified with DECT as MSU crystal deposition may be real and not artefacts. This correlation remains throughout follow-up in the knees. However, the comparable prevalence of vascular DECT MSU deposits between gout patients and controls, the systematic co-existence of vascular calcifications and the uneven regression under urate-lowering therapy requires further analysis to determine which DECT spots are artefacts and which are not.References:[1]Dual-Energy Computed Tomography Detection of Cardiovascular Monosodium Urate Deposits in Patients With Gout. Klauser AS, Halpern EJ, Strobl S, Gruber J, Feuchtner G, Bellmann-Weiler R, Weiss G, Stofferin H, Jaschke W.Disclosure of Interests:Tristan Pascart Grant/research support from: Research Grant Horizon Pharma, Consultant of: Novartis, BMS, Sanofi, Pfizer,, Speakers bureau: Novartis, BMS, Paul Carpentier: None declared, Laurène Norberciak: None declared, Julie Legrand: None declared, Eric Houvenagel Speakers bureau: Janssen, Novartis, Fabio Becce: None declared, Jean-François Budzik: None declared
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Arabi A, Salhi Y, Zenati Y, Si-Ahmed E, Legrand J. On gas-liquid intermittent flow in a horizontal pipe: Influence of sub-regime on slug frequency. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2019.115251] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Pascart T, Norberciak L, Legrand J, Becce F, Budzik JF. Dual-energy computed tomography in calcium pyrophosphate deposition: initial clinical experience. Osteoarthritis Cartilage 2019; 27:1309-1314. [PMID: 31146015 DOI: 10.1016/j.joca.2019.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 04/08/2019] [Accepted: 05/01/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the dual-energy computed tomography (DECT) attenuation properties of meniscal calcifications in calcium pyrophosphate deposition (CPPD) in vivo, and assess whether DECT was able to discriminate meniscal CPP deposits from calcium hydroxyapatite (HA) in subchondral and trabecular bone. METHOD Patients with clinical suspicion of crystal-related arthropathy (gout and/or CPPD) and knee DECT scans were retrospectively assigned to CPPD (n = 19) or control (n = 21) groups depending on the presence/absence of chondrocalcinosis on DECT. Two observers drew standardized regions of interest (ROI) in meniscal calcifications, non-calcified menisci, as well as subchondral and trabecular bone. Five DECT parameters were obtained: CT numbers (HU) at 80 and 140 kV, dual-energy index (DEI), electron density (ρe), and effective atomic number (Zeff). The four different knee structures were compared within/between patients and controls using linear mixed models, adjusting for confounders. RESULTS Meniscal calcifications (n = 89) in CPPD patients had mean ± SD CT numbers at 80 and 140 kV of 257 ± 64 and 201 ± 48 HU, respectively; with a DEI of 0.023 ± 0.007, and ρe and Zeff of 140 ± 35 and 8.8 ± 0.3, respectively. Meniscal CPP deposits were readily distinguished from calcium HA in subchondral and trabecular bone (p ≤ 0.001), except at 80 kV separately (p = 0.74). Zeff and ρe both significantly differed between CPP deposits and calcium HA in subchondral and trabecular bone (p < 0.0001). CONCLUSION This proof-of-concept study shows that DECT has the potential to discriminate meniscal CPP deposits from calcium HA in subchondral and trabecular bone in vivo, paving the way for the non-invasive biochemical signature assessment of intra- and juxta-articular calcium crystal deposits.
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Affiliation(s)
- T Pascart
- Department of Rheumatology, Lille Catholic Hospitals, University of Lille, F-59160 Lomme, France; EA 4490, PMOI, Physiopathologie des Maladies Osseuses Inflammatoires, University of Lille, Lille, France.
| | - L Norberciak
- Department of Medical Research, Biostatistics, Lille Catholic Hospitals, University of Lille, Lomme, France.
| | - J Legrand
- Department of Diagnostic and Interventional Radiology, Lille Catholic Hospitals, University of Lille, Lomme, France.
| | - F Becce
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
| | - J-F Budzik
- EA 4490, PMOI, Physiopathologie des Maladies Osseuses Inflammatoires, University of Lille, Lille, France; Department of Diagnostic and Interventional Radiology, Lille Catholic Hospitals, University of Lille, Lomme, France.
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Roy E, Legrand J, Baz B, Wong H, Morahan G, Walker G, Khosrotehrani K. 985 Genome wide mapping identifies regulation of MAPKinase pathway as key genetic determinant of allergic contact dermatitis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bousdira K, Bousdira D, Bekkouche SMEA, Yahiaoui FZ, Nouri L, Legrand J. Combustion Study of Phoenicicole Biomass in Algerian Oasis Using Thermogravimetric Analysis: Deglet Nour Cultivar Case. Arab J Sci Eng 2018. [DOI: 10.1007/s13369-017-2723-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dunchych K, Loisel C, Arhaliass A, Gonçalves O, Legrand J, Pouliquen M, Saint-Jalmes S. Evaluation of the mechanical properties of compacted paraffin powders. Effect of formulation. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2017.10.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Legrand J, Baz B, Mukhopadhyay P, Wong H, Ram R, Morahan G, Walker G, Khosrotehrani K. 183 Genome wide association identifies MAPKinase pathway regulators as key genetic determinants of allergic contact dermatitis. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pruvost J, Le Borgne F, Artu A, Legrand J. Development of a thin-film solar photobioreactor with high biomass volumetric productivity (AlgoFilm©) based on process intensification principles. ALGAL RES 2017. [DOI: 10.1016/j.algal.2016.10.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Moutel B, Gonçalves O, Le Grand F, Long M, Soudant P, Legrand J, Grizeau D, Pruvost J. Development of a screening procedure for the characterization of Botryococcus braunii strains for biofuel application. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.05.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jin J, Dupré C, Yoneda K, Watanabe MM, Legrand J, Grizeau D. Characteristics of extracellular hydrocarbon-rich microalga Botryococcus braunii for biofuels production: Recent advances and opportunities. Process Biochem 2016. [DOI: 10.1016/j.procbio.2015.11.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Taleb A, Kandilian R, Touchard R, Montalescot V, Rinaldi T, Taha S, Takache H, Marchal L, Legrand J, Pruvost J. Screening of freshwater and seawater microalgae strains in fully controlled photobioreactors for biodiesel production. Bioresour Technol 2016; 218:480-90. [PMID: 27394994 DOI: 10.1016/j.biortech.2016.06.086] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/21/2016] [Accepted: 06/22/2016] [Indexed: 05/18/2023]
Abstract
Strain selection is one of the primary hurdles facing cost-effective microalgal biodiesel production. Indeed, the strain used affects both upstream and downstream biodiesel production processes. This study presents a screening procedure that considers the most significant criteria in microalgal biodiesel production including TAG production and wet extraction and recovery of TAGs. Fourteen freshwater and seawater strains were investigated. Large variation was observed between the strains in all the screening criteria. The overall screening procedure ultimately led to the identification of Parachlorella kessleri UTEX2229 and Nannochloropsis gaditana CCMP527 as the best freshwater and seawater strains, respectively. They featured the largest areal TAG productivity equal to 2.7×10(-3) and 2.3×10(-3)kgm(-2)d(-1), respectively. These two strains also displayed encouraging cell fragility in a high pressure bead milling process with 69% and 98% cell disruption at 1750bar making them remarkable strains for TAG extraction in wet environment.
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Affiliation(s)
- A Taleb
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France; AZM Center for Biotechnology Research and Its Applications, Laboratory of Applied Biotechnology, Lebanese University, EDST, Tripoli, Lebanon; Department of Food Science and Technology, Faculty of Agricultural and Veterinary Medicine, Lebanese University, Dekweneh, Beirut, Lebanon
| | - R Kandilian
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - R Touchard
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - V Montalescot
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - T Rinaldi
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - S Taha
- AZM Center for Biotechnology Research and Its Applications, Laboratory of Applied Biotechnology, Lebanese University, EDST, Tripoli, Lebanon
| | - H Takache
- Department of Food Science and Technology, Faculty of Agricultural and Veterinary Medicine, Lebanese University, Dekweneh, Beirut, Lebanon
| | - L Marchal
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - J Legrand
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - J Pruvost
- GEPEA, Université de Nantes, CNRS UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France.
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Caporgno MP, Pruvost J, Legrand J, Lepine O, Tazerout M, Bengoa C. Hydrothermal liquefaction of Nannochloropsis oceanica in different solvents. Bioresour Technol 2016; 214:404-410. [PMID: 27155795 DOI: 10.1016/j.biortech.2016.04.123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/25/2016] [Accepted: 04/27/2016] [Indexed: 06/05/2023]
Abstract
Although the hydrothermal liquefaction is considered a promising technology for converting microalgae into liquid biofuels, there are still some disadvantages. This paper demonstrated that the bio-oil yield can be significantly improved by adding alcohols as co-solvents and carrying out the conversion at mild conditions (<250°C), but at the expense of a reduced bio-oil quality. By adding ethanol, the bio-oil yields obtained (up to ∼60%) were comparable to the yield obtained at severe operating conditions using only water as solvent (54±2% on average), but the quality of the bio-oil was lower. However, the main advantages of the process here described lie in the utilisation of wet microalgae (∼75% moisture) and alcohol concentrations which avoid both drying the microalgae and decreasing the amount of microalgae loaded in the reactor.
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Affiliation(s)
- M P Caporgno
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain
| | - J Pruvost
- GEPEA, Université de Nantes, CNRS, UMR 6144, bd de l'Université, CRTT - BP 406, 44602 Saint-Nazaire Cedex, France
| | - J Legrand
- GEPEA, Université de Nantes, CNRS, UMR 6144, bd de l'Université, CRTT - BP 406, 44602 Saint-Nazaire Cedex, France
| | - O Lepine
- AlgoSource SAS, 37 bd de l'Université, CRTT - BP 406, 44602 Saint-Nazaire Cedex, France
| | - M Tazerout
- GEPEA, Département Systèmes Energétiques et Environnement, Ecole des Mines de Nantes, UMR 6144, La Chantrerie, 4 rue Alfred Kastler, BP 20722, F-44307 Nantes Cedex 3, France
| | - C Bengoa
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain.
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Jin J, Dupré C, Legrand J, Grizeau D. Extracellular hydrocarbon and intracellular lipid accumulation are related to nutrient-sufficient conditions in pH-controlled chemostat cultures of the microalga Botryococcus braunii SAG 30.81. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.05.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kandilian R, Soulies A, Pruvost J, Rousseau B, Legrand J, Pilon L. Simple method for measuring the spectral absorption cross-section of microalgae. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2016.02.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Souliès A, Legrand J, Marec H, Pruvost J, Castelain C, Burghelea T, Cornet JF. Investigation and modeling of the effects of light spectrum and incident angle on the growth ofChlorella vulgarisin photobioreactors. Biotechnol Prog 2016; 32:247-61. [DOI: 10.1002/btpr.2244] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 12/23/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Antoine Souliès
- CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire; Université De Nantes, UMR 6144; 37 Boulevard De L'université, BP 406 Saint-Nazaire Cedex 44602 France
| | - Jack Legrand
- CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire; Université De Nantes, UMR 6144; 37 Boulevard De L'université, BP 406 Saint-Nazaire Cedex 44602 France
| | - Hélène Marec
- CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire; Université De Nantes, UMR 6144; 37 Boulevard De L'université, BP 406 Saint-Nazaire Cedex 44602 France
| | - Jérémy Pruvost
- CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire; Université De Nantes, UMR 6144; 37 Boulevard De L'université, BP 406 Saint-Nazaire Cedex 44602 France
| | - Cathy Castelain
- CNRS, Laboratoire de Thermocinétique de Nantes; Université De Nantes, UMR 6607; La Chantrerie, Rue Christian-Pauc, BP 50609 Nantes Cedex 3 44306 France
| | - Teodor Burghelea
- CNRS, Laboratoire de Thermocinétique de Nantes; Université De Nantes, UMR 6607; La Chantrerie, Rue Christian-Pauc, BP 50609 Nantes Cedex 3 44306 France
| | - Jean-François Cornet
- Université Clermont Auvergne, Sigma-Clermont; Institut Pascal; UMR CNRS 6602 BP 10448 F63000 Clermont-Ferrand France
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De Pilli T, Giuliani R, Buléon A, Pontoire B, Legrand J. Effects of protein-lipid and starch-lipid complexes on textural characteristics of extrudates based on wheat flour with the addition of oleic acid. Int J Food Sci Technol 2016. [DOI: 10.1111/ijfs.13070] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Teresa De Pilli
- Department of Science of Agriculture, Food and Environment (SAFE); University of Foggia; Via Napoli 25 Foggia 71100 Italy
| | - Roma Giuliani
- Department of Science of Agriculture, Food and Environment (SAFE); University of Foggia; Via Napoli 25 Foggia 71100 Italy
| | - Alain Buléon
- UR1268 Biopolymères Interactions Assemblages; INRA; Nantes F-44300 France
| | - Bruno Pontoire
- UR1268 Biopolymères Interactions Assemblages; INRA; Nantes F-44300 France
| | - Jack Legrand
- CNRS, Laboratoire de Génie des Procédés Environnement Agroalimentaire, GEPEA, UMR6144, CRTT; LUNAM Université; Université de Nantes; BP 406 St. Nazaire Cedex 44602 France
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Caporgno MP, Olkiewicz M, Pruvost J, Lepine O, Legrand J, Font J, Bengoa C. A novel pre-treatment for the methane production from microalgae by using N-methylmorpholine-N-oxide (NMMO). Bioresour Technol 2016; 201:370-373. [PMID: 26684667 DOI: 10.1016/j.biortech.2015.11.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 11/20/2015] [Accepted: 11/24/2015] [Indexed: 06/05/2023]
Abstract
The aim of this work was to study the effect of the solvent N-methylmorpholine-N-oxide (NMMO) to pre-treat Nannochloropsis oculata before the anaerobic digestion process. The results indicated that the pre-treatment affects the characteristics of the cell wall, which consequently becomes more susceptible to the microorganisms attack during anaerobic digestion. The methane production was increased by 43% after the pre-treatment, from 238±6mLCH4/gVS until 339±4mLCH4/gVS. On the contrary, the methane production from Chlorella vulgaris decreased after the pre-treatment from 251±4mLCH4/gVS to 231±3mLCH4/gVS. The failure on the pre-treatment was attributed to the particular characteristics of the substrate in consequence of a previous drying step.
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Affiliation(s)
- M P Caporgno
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Spain
| | - M Olkiewicz
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Spain
| | - J Pruvost
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
| | - O Lepine
- AlgoSource SAS, 37 bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
| | - J Legrand
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
| | - J Font
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Spain
| | - C Bengoa
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Spain.
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Pruvost J, Le Borgne F, Artu A, Cornet JF, Legrand J. Industrial Photobioreactors and Scale-Up Concepts. Photobioreaction Engineering 2016. [DOI: 10.1016/bs.ache.2015.11.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Moutel B, André M, Kucma D, Legrand J, Grizeau D, Pruvost J, Gonçalves O. Assessing the biofuel production potential of Botryococcus braunii strains by sensitive rapid qualitative chemotyping using chemometrically-assisted gas chromatography–mass spectrometry. ALGAL RES 2015. [DOI: 10.1016/j.algal.2015.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Rup B, Pallardy M, Sikkema D, Albert T, Allez M, Broet P, Carini C, Creeke P, Davidson J, De Vries N, Finco D, Fogdell-Hahn A, Havrdova E, Hincelin-Mery A, C Holland M, H Jensen PE, Jury EC, Kirby H, Kramer D, Lacroix-Desmazes S, Legrand J, Maggi E, Maillère B, Mariette X, Mauri C, Mikol V, Mulleman D, Oldenburg J, Paintaud G, R Pedersen C, Ruperto N, Seitz R, Spindeldreher S, Deisenhammer F. Standardizing terms, definitions and concepts for describing and interpreting unwanted immunogenicity of biopharmaceuticals: recommendations of the Innovative Medicines Initiative ABIRISK consortium. Clin Exp Immunol 2015; 181:385-400. [PMID: 25959571 PMCID: PMC4557374 DOI: 10.1111/cei.12652] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2015] [Indexed: 12/17/2022] Open
Abstract
Biopharmaceuticals (BPs) represent a rapidly growing class of approved and investigational drug therapies that is contributing significantly to advancing treatment in multiple disease areas, including inflammatory and autoimmune diseases, genetic deficiencies and cancer. Unfortunately, unwanted immunogenic responses to BPs, in particular those affecting clinical safety or efficacy, remain among the most common negative effects associated with this important class of drugs. To manage and reduce risk of unwanted immunogenicity, diverse communities of clinicians, pharmaceutical industry and academic scientists are involved in: interpretation and management of clinical and biological outcomes of BP immunogenicity, improvement of methods for describing, predicting and mitigating immunogenicity risk and elucidation of underlying causes. Collaboration and alignment of efforts across these communities is made difficult due to lack of agreement on concepts, practices and standardized terms and definitions related to immunogenicity. The Innovative Medicines Initiative (IMI; http://www.imi-europe.org), ABIRISK consortium [Anti-Biopharmaceutical (BP) Immunization Prediction and Clinical Relevance to Reduce the Risk; http://www.abirisk.eu] was formed by leading clinicians, academic scientists and EFPIA (European Federation of Pharmaceutical Industries and Associations) members to elucidate underlying causes, improve methods for immunogenicity prediction and mitigation and establish common definitions around terms and concepts related to immunogenicity. These efforts are expected to facilitate broader collaborations and lead to new guidelines for managing immunogenicity. To support alignment, an overview of concepts behind the set of key terms and definitions adopted to date by ABIRISK is provided herein along with a link to access and download the ABIRISK terms and definitions and provide comments (http://www.abirisk.eu/index_t_and_d.asp).
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Affiliation(s)
- B Rup
- Pfizer, Immunogenicity Sciences Disciple, Pharmacokinetics, Dynamics and Metabolism
| | - M Pallardy
- INSERM, UMR996, Faculté Pharmacie, Université Paris Sud, France
| | - D Sikkema
- GlaxoSmithKline, Clinical Immunology-Biopharm, King of Prussia, PA, USA
| | - T Albert
- Institute of Experimental Haematology and Transfusion Medicine, University Clinic Bonn, Bonn, Germany
| | - M Allez
- Hôpital Saint-Louis, Department of Gastroenterology, GETAID, Paris, France
| | - P Broet
- INSERM, UMR669, University of Paris Sud, France
| | - C Carini
- Pfizer, Early Biotech Clinical Development, Cambridge, MA, USA
| | - P Creeke
- Centre for Neuroscience and Trauma, Blizard Institute, Queen Mary University of London, London, UK
| | - J Davidson
- GlaxoSmithKline, Worldwide Epidemiology, Southall, UK
| | - N De Vries
- Clinical Immunology and Rheumatology, University of Amsterdam, Amsterdam, the Netherlands
| | - D Finco
- Pfizer, Drug Safety R&D, Groton, CT, USA
| | - A Fogdell-Hahn
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - E Havrdova
- Department of Neurology and Center for Clinical Neuroscience, MS Center, Charles University in Prague, Prague, Czech Republic
| | - A Hincelin-Mery
- Sanofi-Aventis, Clinical Exploratory and Pharmacology, Chilly-Mazerin, FR
| | - M C Holland
- GlaxoSmithKline, Clinical Immunology-Biopharm R&D, King of Prussia, PA, USA
| | - P E H Jensen
- Department of Neurology, University of Copenhagen, Copenhagen, Denmark
| | - E C Jury
- Centre for Rheumatology, University College London, London, UK
| | - H Kirby
- UCB Pharma, Bioanalytical R&D, Slough, UK
| | - D Kramer
- Merck-Serono, Institute of Drug Metabolism and Pharmacokinetics, Grafing, Germany
| | | | - J Legrand
- Ipsen Innovation, Pharmacokinetics Drug Metabolism Department, Les Ulis, France
| | - E Maggi
- Dipartimento di Medicina Sperimentale e Clinica, Universita di Firenze, Firenze, Italy
| | - B Maillère
- CEA-Saclay Institute of Biology and Technologies, Gif sur Yvette, France
| | - X Mariette
- INSERM, U1012, Hôpitaux Universitaires Paris Sud, Rhumatologie, Paris, France
| | - C Mauri
- Centre for Rheumatology Research, University College London, London, UK
| | - V Mikol
- Sanofi Aventis, Structural Biology, Paris, France
| | - D Mulleman
- University of Tours Francois Rabelais, CNRS UMR 7292, Tours, France
| | - J Oldenburg
- Institute of Experimental Haematology and Transfusion Medicine, University Clinic Bonn, Bonn, Germany
| | - G Paintaud
- CNRS UMR 7292 'GICC', Faculty of Medicine, Tours, France
| | | | - N Ruperto
- Istituto Giannina Gaslini, Pediatria II, Rheumatology, Genova, Italy
| | - R Seitz
- Division of Haematology/Transfusion Medicine, Paul-Ehrlich-Institut, Langen, Germany
| | - S Spindeldreher
- Drug Metabolism Pharmacokinetics-Biologics, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - F Deisenhammer
- Department of Neurology, Innsbruck Medical University, Innsbruck, Austria
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Caporgno M, Taleb A, Olkiewicz M, Font J, Pruvost J, Legrand J, Bengoa C. Microalgae cultivation in urban wastewater: Nutrient removal and biomass production for biodiesel and methane. ALGAL RES 2015. [DOI: 10.1016/j.algal.2015.05.011] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Chollet S, Marchal L, Jérémy Meucci, Renault JH, Legrand J, Foucault A. Methodology for optimally sized centrifugal partition chromatography columns. J Chromatogr A 2015; 1388:174-83. [DOI: 10.1016/j.chroma.2015.02.043] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/30/2015] [Accepted: 02/16/2015] [Indexed: 10/24/2022]
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Taleb A, Pruvost J, Legrand J, Marec H, Le-Gouic B, Mirabella B, Legeret B, Bouvet S, Peltier G, Li-Beisson Y, Taha S, Takache H. Development and validation of a screening procedure of microalgae for biodiesel production: application to the genus of marine microalgae Nannochloropsis. Bioresour Technol 2015; 177:224-32. [PMID: 25496942 DOI: 10.1016/j.biortech.2014.11.068] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 11/14/2014] [Accepted: 11/15/2014] [Indexed: 05/21/2023]
Abstract
Nannochloropsis has emerged as a promising alga for biodiesel production. However, the genus consists of 6 species and hundreds of strains making strain selection a challenge. Furthermore, oil productivity is instrumental to economic viability of any algal strain for industrial production, which is dependent on growth rate and oil content. In most cases, these two parameters have been studied independently. Thus, the goal of this study is to provide a combined method for evaluating strain performance in specially designed photobioreactors together with an in-depth lipidomic analyses. The nine strains of Nannochloropsis tested showed considerable variations in productivity and lipidomics highlighting the importance of strain selection. Finally, Nannochloropsis gaditana CCMP527 and Nannochloropsis salina CCMP537 emerged as the two most promising strains, with an oil content of 37 and 27 dry wt% after 11-day nitrogen starvation, respectively, resulting in TAG productivity of 13×10(-3) and 18×10(-3) kg m(-3) d(-1), respectively.
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Affiliation(s)
- A Taleb
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France; Department of Food Science and Technology, Faculty of Agricultural and Veterinary Medicine, Lebanese University, Dekwaneh, Beirut, Lebanon; AZM Center for Biotechnology Research and its Applications, Laboratory of Applied Biotechnology, Lebanese University, EDST, Tripoli, Lebanon
| | - J Pruvost
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France.
| | - J Legrand
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - H Marec
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - B Le-Gouic
- GEPEA, Université de Nantes, CNRS, UMR6144, bd de l'Université, CRTT, BP 406, 44602 Saint-Nazaire Cedex, France
| | - B Mirabella
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - B Legeret
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - S Bouvet
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - G Peltier
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - Y Li-Beisson
- CEA, IBEB, Lab Bioenerget Biotechnol Bacteries & Microalgues, Saint-Paul-lez-Durance, F-13108, France; CNRS, UMR 7265 Biol Veget & Microbiol Environ, Saint-Paul-lez-Durance, F-13108, France; Aix Marseille Université, BVME UMR7265, Marseille, F-13284, France
| | - S Taha
- Department of Food Science and Technology, Faculty of Agricultural and Veterinary Medicine, Lebanese University, Dekwaneh, Beirut, Lebanon
| | - H Takache
- AZM Center for Biotechnology Research and its Applications, Laboratory of Applied Biotechnology, Lebanese University, EDST, Tripoli, Lebanon
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Abstract
Over the last decades, production of microalgae and cyanobacteria has been developed for several applications, including novel foods, cosmetic ingredients and more recently biofuel. The sustainability of these promising developments can be hindered by some constraints, such as water and nutrient footprints. This review surveys data on N2-fixing cyanobacteria for biomass production and ways to induce and improve the excretion of ammonium within cultures under aerobic conditions. The nitrogenase complex is oxygen sensitive. Nevertheless, nitrogen fixation occurs under oxic conditions due to cyanobacteria-specific characteristics. For instance, in some cyanobacteria, the vegetative cell differentiation in heterocyts provides a well-adapted anaerobic microenvironment for nitrogenase protection. Therefore, cell cultures of oxygenic cyanobacteria have been grown in laboratory and pilot photobioreactors (Dasgupta et al., 2010; Fontes et al., 1987; Moreno et al., 2003; Nayak & Das, 2013). Biomass production under diazotrophic conditions has been shown to be controlled by environmental factors such as light intensity, temperature, aeration rate, and inorganic carbon concentration, also, more specifically, by the concentration of dissolved oxygen in the culture medium. Currently, there is little information regarding the production of extracellular ammonium by heterocytous cyanobacteria. This review compares the available data on maximum ammonium concentrations and analyses the specific rate production in cultures grown as free or immobilized filamentous cyanobacteria. Extracellular production of ammonium could be coupled, as suggested by recent research on non-diazotrophic cyanobacteria, to that of other high value metabolites. There is little information available regarding the possibility for using diazotrophic cyanobacteria as cellular factories may be in regard of the constraints due to nitrogen fixation.
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Affiliation(s)
- Dominique Grizeau
- a LUNAM, Université de Nantes, CNRS, GEPEA , 44602 Saint-Nazaire Cedex , France and
| | - Lan Anh Bui
- a LUNAM, Université de Nantes, CNRS, GEPEA , 44602 Saint-Nazaire Cedex , France and
| | - Catherine Dupré
- a LUNAM, Université de Nantes, CNRS, GEPEA , 44602 Saint-Nazaire Cedex , France and.,b Conservatoire National des Arts et Métiers, Ecole SITI, EP Sciences et Techniques de la Mer, CNRS, GEPEA , 50103 Cherbourg Cedex , France
| | - Jack Legrand
- a LUNAM, Université de Nantes, CNRS, GEPEA , 44602 Saint-Nazaire Cedex , France and
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De Pilli T, Legrand J, Derossi A, Severini C. Effect of proteins on the formation of starch-lipid complexes during extrusion cooking of wheat flour with the addition of oleic acid. Int J Food Sci Technol 2014. [DOI: 10.1111/ijfs.12698] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Teresa De Pilli
- Department of Science of Agriculture, Food and Environment (SAFE); University of Foggia; Via Napoli 25 Foggia 71100 Italy
| | - Jack Legrand
- GEPEA; UMR CNRS 6144 100; University of Nantes CRTT; IUT; BP 406; Saint-Nazaire Cedex; 44602 France
| | - Antonio Derossi
- Department of Science of Agriculture, Food and Environment (SAFE); University of Foggia; Via Napoli 25 Foggia 71100 Italy
| | - Carla Severini
- Department of Science of Agriculture, Food and Environment (SAFE); University of Foggia; Via Napoli 25 Foggia 71100 Italy
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Bui LA, Dupre C, Legrand J, Grizeau D. Isolation, improvement and characterization of an ammonium excreting mutant strain of the heterocytous cyanobacterium, Anabaena variabilis PCC 7937. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2014.06.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kandilian R, Pruvost J, Legrand J, Pilon L. Influence of light absorption rate by Nannochloropsis oculata on triglyceride production during nitrogen starvation. Bioresour Technol 2014; 163:308-19. [PMID: 24835743 DOI: 10.1016/j.biortech.2014.04.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 04/11/2014] [Accepted: 04/14/2014] [Indexed: 05/24/2023]
Abstract
This study aims to understand the role of light transfer in triglyceride fatty-acid (TG-FA) cell content and productivity from microalgae during nitrogen starvation. Large amounts of TG-FA can be produced via nitrogen starvation of microalgae in photobioreactors exposed to intense light. First, spectral absorption and scattering cross-sections of N. oculata were measured at different times during nitrogen starvation. They were used to relate the mean volumetric rate of energy absorption (MVREA) per unit mass of microalgae to the TG-FA productivity and cell content. TG-FA productivity correlated with the MVREA and reached a maximum for MVREA of 13 μmol hν/gs. This indicated that TG-FA synthesis was limited by the photon absorption rate in the PBR. A minimum MVREA of 13 μmol hν/gs was also necessary at the onset of nitrogen starvation to trigger large accumulation of TG-FA in cells. These results will be instrumental in defining protocols for TG-FA production in scaled-up photobioreactors.
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Affiliation(s)
- Razmig Kandilian
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, Bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France; Mechanical and Aerospace Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California - Los Angeles, Los Angeles, CA 90095, USA
| | - Jérémy Pruvost
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, Bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France.
| | - Jack Legrand
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, Bd de l'Université, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
| | - Laurent Pilon
- Mechanical and Aerospace Engineering Department, Henry Samueli School of Engineering and Applied Science, University of California - Los Angeles, Los Angeles, CA 90095, USA.
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Abstract
The hyperfine structure of the ground state rotational spectrum of CD3I is remeasured with a greater accuracy and reanalyzed. The determinability of the hyperfine constants is discussed.
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Affiliation(s)
- J. Gadhi
- Laboratoire de Spectroscopie Hertzienne associé au C.N.R.S., Université de Lille I, France
| | - G. Wlodarczak
- Laboratoire de Spectroscopie Hertzienne associé au C.N.R.S., Université de Lille I, France
| | - J. Legrand
- Laboratoire de Spectroscopie Hertzienne associé au C.N.R.S., Université de Lille I, France
| | - J. Demaison
- Laboratoire de Spectroscopie Hertzienne associé au C.N.R.S., Université de Lille I, France
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Woudberg S, van Heyningen M, Le Coq L, Legrand J, Du Plessis J. Analytical determination of the effect of compression on the permeability of fibrous porous media. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2014.03.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Serrano León E, Coat R, Moutel B, Pruvost J, Legrand J, Gonçalves O. Influence of physical and chemical properties of HTSXT-FTIR samples on the quality of prediction models developed to determine absolute concentrations of total proteins, carbohydrates and triglycerides: a preliminary study on the determination of their absolute concentrations in fresh microalgal biomass. Bioprocess Biosyst Eng 2014; 37:2371-80. [PMID: 24861315 DOI: 10.1007/s00449-014-1215-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 05/06/2014] [Indexed: 11/27/2022]
Abstract
Absolute concentrations of total macromolecules (triglycerides, proteins and carbohydrates) in microorganisms can be rapidly measured by FTIR spectroscopy, but caution is needed to avoid non-specific experimental bias. Here, we assess the limits within which this approach can be used on model solutions of macromolecules of interest. We used the Bruker HTSXT-FTIR system. Our results show that the solid deposits obtained after the sampling procedure present physical and chemical properties that influence the quality of the absolute concentration prediction models (univariate and multivariate). The accuracy of the models was degraded by a factor of 2 or 3 outside the recommended concentration interval of 0.5-35 µg spot(-1). Change occurred notably in the sample hydrogen bond network, which could, however, be controlled using an internal probe (pseudohalide anion). We also demonstrate that for aqueous solutions, accurate prediction of total carbohydrate quantities (in glucose equivalent) could not be made unless a constant amount of protein was added to the model solution (BSA). The results of the prediction model for more complex solutions, here with two components: glucose and BSA, were very encouraging, suggesting that this FTIR approach could be used as a rapid quantification method for mixtures of molecules of interest, provided the limits of use of the HTSXT-FTIR method are precisely known and respected. This last finding opens the way to direct quantification of total molecules of interest in more complex matrices.
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Affiliation(s)
- Esteban Serrano León
- Université de Nantes, GEPEA UMR CNRS 6144, Bât. CRTT, 37 bd de l'Université, BP 406, 44602, Saint-Nazaire Cedex, France
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Ifrim GA, Titica M, Cogne G, Boillereaux L, Legrand J, Caraman S. Dynamic pH model for autotrophic growth of microalgae in photobioreactor: A tool for monitoring and control purposes. AIChE J 2013. [DOI: 10.1002/aic.14290] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- George A. Ifrim
- LUNAM, Université de Nantes; ONIRIS, GEPEA, UMR-CNRS 6144, University Bd. CRTT-BP 406; 44600 Saint-Nazaire Nantes France
- “Dunărea de Jos” University of Galaţi; Domnească Street, no. 47, 800008 Galaţi Romania
| | - Mariana Titica
- LUNAM, Université de Nantes; ONIRIS, GEPEA, UMR-CNRS 6144, University Bd. CRTT-BP 406; 44600 Saint-Nazaire Nantes France
| | - Guillaume Cogne
- LUNAM, Université de Nantes; ONIRIS, GEPEA, UMR-CNRS 6144, University Bd. CRTT-BP 406; 44600 Saint-Nazaire Nantes France
| | - Lionel Boillereaux
- LUNAM, Université de Nantes; ONIRIS, GEPEA, UMR-CNRS 6144, University Bd. CRTT-BP 406; 44600 Saint-Nazaire Nantes France
| | - Jack Legrand
- LUNAM, Université de Nantes; ONIRIS, GEPEA, UMR-CNRS 6144, University Bd. CRTT-BP 406; 44600 Saint-Nazaire Nantes France
| | - Sergiu Caraman
- “Dunărea de Jos” University of Galaţi; Domnească Street, no. 47, 800008 Galaţi Romania
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Van Vooren G, Le Grand F, Legrand J, Cuiné S, Peltier G, Pruvost J. Investigation of fatty acids accumulation in Nannochloropsis oculata for biodiesel application. Bioresour Technol 2012; 124:421-32. [PMID: 23018107 DOI: 10.1016/j.biortech.2012.08.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 07/31/2012] [Accepted: 08/02/2012] [Indexed: 05/02/2023]
Abstract
Lipids production of the marine microalga species Nannochloropsis oculata was deeply investigated by studying under continuous light the effects of different nitrogen starvation strategies in photobioreactors of various thicknesses. Operating parameters like incident photons flux density (PFD), initial nitrogen (progressive starvation strategy) or biomass concentrations (sudden starvation strategy) were examined, with a detailed analysis of their effects on the quality and production kinetics of total (TL) and triglycerides (TG). In addition to the already known effect of nitrogen starvation to trigger reserve lipids accumulation (mainly TG), it was demonstrated the relevance of the light received per cell affecting TG content and productivities, as well as fatty acids (FA) profiles. With appropriate optimization, N. oculata was confirmed as an interesting candidate for biodiesel application, with high FA accumulation (up to around 50%DW with 43%DW in TG-FA), high productivity (maximum 3.6×10(-3)kg(TG-FA)m(-2)d(-1)) and a TG-FA profile close to palm oil.
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Affiliation(s)
- G Van Vooren
- Université de Nantes, CNRS, GEPEA, UMR-CNRS 6144, CRTT-BP 406, 44602 Saint-Nazaire Cedex, France
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Martzolff A, Cahoreau E, Cogne G, Peyriga L, Portais JC, Dechandol E, Le Grand F, Massou S, Gonçalves O, Pruvost J, Legrand J. Photobioreactor design for isotopic non-stationary13C-metabolic flux analysis (INST13C-MFA) under photoautotrophic conditions. Biotechnol Bioeng 2012; 109:3030-40. [DOI: 10.1002/bit.24575] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2012] [Revised: 05/30/2012] [Accepted: 05/31/2012] [Indexed: 11/07/2022]
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Pruvost J, Cornet JF, Goetz V, Legrand J. Theoretical investigation of biomass productivities achievable in solar rectangular photobioreactors for the cyanobacterium Arthrospira platensis. Biotechnol Prog 2012; 28:699-714. [DOI: 10.1002/btpr.1540] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 03/06/2012] [Indexed: 11/11/2022]
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Affiliation(s)
- Emeline Talansier
- GEPEA-UMR-CNRS 6144; Oniris site Géraudière; BP 82225; F-44322; Nantes Cedex 3; France
| | - Dominique Dellavalle
- LTN-UMR-CNRS 6602; Oniris site Géraudière; BP 82225; F-44322; Nantes Cedex 3; France
| | - Catherine Loisel
- GEPEA-UMR-CNRS 6144; Oniris site Géraudière; BP 82225; F-44322; Nantes Cedex 3; France
| | - Anne Desrumaux
- GEPEA-UMR-CNRS 6144; Oniris site Géraudière; BP 82225; F-44322; Nantes Cedex 3; France
| | - Jack Legrand
- LUNAM Université; Université de Nantes; CNRS; GEPEA; UMR 6144; CRTT; BP 420; F-44500; St-Nazaire; France
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Berrich E, Aloui F, Legrand J. Inverse method for the dynamical analysis of wall shear rates using three-segment probes in parallel plate rheometer. Chem Eng Sci 2011. [DOI: 10.1016/j.ces.2011.05.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Orsière T, Pearson N, Valin M, Sire G, Sarlang S, Forster R, Legrand J. Genotoxicity screening using BlueScreen HC™ and BlueScreen HC S9™ assays: A validation study. Toxicol Lett 2011. [DOI: 10.1016/j.toxlet.2011.05.397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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