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Romero-Vargas A, Fdez-Güelfo LA, Blandino A, Díaz MJ, Díaz AB. Rugulopteryx okamurae: Effect of hydrothermal acid pretreatment on the saccharification process. BIORESOURCE TECHNOLOGY 2023; 388:129721. [PMID: 37730140 DOI: 10.1016/j.biortech.2023.129721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/24/2023] [Accepted: 09/04/2023] [Indexed: 09/22/2023]
Abstract
The biological invasion caused by the invasive macroalga Rugulopteryx okamurae is causing increasing concern in southern Europe. To reduce its impact, this brown alga can be treated from a biorefinery approach. In this study, the macroalga is used as raw material to obtain fermentable sugars, which can be converted into high value-added products. The alga was exposed to hydrothermal and hydrothermal acid pretreatment and the pretreated biomass was used for enzymatic hydrolysis, achieving a hydrolysate with a reducing sugar concentration of almost 25 g/L (49.2% more than with non-pretreated alga). In addition, the combined severity factor was calculated to identify the best pretreatment conditions, finding the optimum in those pretreatments performed with 0.2 N HCl concentration and 15 min reaction time. Based on the results, it would be interesting to carry out new studies using the saccharified medium obtained under optimal conditions to obtain value-added compounds by fermentation.
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Affiliation(s)
- Agustín Romero-Vargas
- Department of Chemical Engineering and Food Technology, Wine and Agrifood Research Institute (IVAGRO), University of Cádiz - International Campus of Excellence (ceiA3), 11510 Puerto Real, Cádiz, Spain.
| | - Luis Alberto Fdez-Güelfo
- Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cádiz - International Campus of Excellence (ceiA3), 11510 Puerto Real, Cádiz, Spain.
| | - Ana Blandino
- Department of Chemical Engineering and Food Technology, Wine and Agrifood Research Institute (IVAGRO), University of Cádiz - International Campus of Excellence (ceiA3), 11510 Puerto Real, Cádiz, Spain.
| | - Manuel J Díaz
- Department of Chemical Engineering and Food Technology, Wine and Agrifood Research Institute (IVAGRO), University of Cádiz - International Campus of Excellence (ceiA3), 11510 Puerto Real, Cádiz, Spain.
| | - Ana Belén Díaz
- Department of Chemical Engineering and Food Technology, Wine and Agrifood Research Institute (IVAGRO), University of Cádiz - International Campus of Excellence (ceiA3), 11510 Puerto Real, Cádiz, Spain.
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Bonilla Loaiza AM, Rodríguez-Jasso RM, Belmares R, López-Badillo CM, Araújo RG, Aguilar CN, Chávez ML, Aguilar MA, Ruiz HA. Fungal Proteins from Sargassum spp. Using Solid-State Fermentation as a Green Bioprocess Strategy. Molecules 2022; 27:3887. [PMID: 35745010 PMCID: PMC9230583 DOI: 10.3390/molecules27123887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 11/25/2022] Open
Abstract
The development of green technologies and bioprocesses such as solid-state fermentation (SSF) is important for the processing of macroalgae biomass and to reduce the negative effect of Sargassum spp. on marine ecosystems, as well as the production of compounds with high added value such as fungal proteins. In the present study, Sargassum spp. biomass was subjected to hydrothermal pretreatments at different operating temperatures (150, 170, and 190 °C) and pressures (3.75, 6.91, and 11.54 bar) for 50 min, obtaining a glucan-rich substrate (17.99, 23.86, and 25.38 g/100 g d.w., respectively). The results indicate that Sargassum pretreated at a pretreatment temperature of 170 °C was suitable for fungal growth. SSF was performed in packed-bed bioreactors, obtaining the highest protein content at 96 h (6.6%) and the lowest content at 72 h (4.6%). In contrast, it was observed that the production of fungal proteins is related to the concentration of sugars. Furthermore, fermentation results in a reduction in antinutritional elements, such as heavy metals (As, Cd, Pb, Hg, and Sn), and there is a decrease in ash content during fermentation kinetics. Finally, this work shows that Aspergillus oryzae can assimilate nutrients found in the pretreated Sargassum spp. to produce fungal proteins as a strategy for the food industry.
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Affiliation(s)
- Adriana M. Bonilla Loaiza
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Rosa M. Rodríguez-Jasso
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Ruth Belmares
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Claudia M. López-Badillo
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Rafael G. Araújo
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Cristóbal N. Aguilar
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Mónica L. Chávez
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
| | - Miguel A. Aguilar
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Saltillo, Av. Industria Metalúrgica 1062, Ramos Arizpe C.P. 25900, Coahuila, Mexico;
| | - Héctor A. Ruiz
- Biorefinery Group, Food Research Department, School of Chemistry, Autonomous University of Coahuila, Saltillo C.P. 25280, Coahuila, Mexico; (A.M.B.L.); (R.B.); (C.M.L.-B.); (R.G.A.); (C.N.A.); (M.L.C.)
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Aparicio E, Rodríguez-Jasso RM, Pinales-Márquez CD, Loredo-Treviño A, Robledo-Olivo A, Aguilar CN, Kostas ET, Ruiz HA. High-pressure technology for Sargassum spp biomass pretreatment and fractionation in the third generation of bioethanol production. BIORESOURCE TECHNOLOGY 2021; 329:124935. [PMID: 33713900 DOI: 10.1016/j.biortech.2021.124935] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 02/27/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Sargassum spp is an invasive macroalgae and an alternative feedstock for bioethanol production. Sargassum spp biomass was subjected to high-pressure technology for biomass fractionation under different operating conditions of temperature and residence time to obtain glucan enriched pretreated solids (32.22 g/100 g of raw material). Enzyme hydrolysis process at high pretreated solid loading (13%, w/v) and enzyme loading of 10 FPU/g of glucan was performed, obtaining 43.01 g/L of glucose corresponding to a conversion yield of 92.12%. Finally, a pre-simultaneous saccharification and fermentation strategy (PSSF) was performed to produce bioethanol. This operational strategy produced 45.66 g/L of glucose in the pre-saccharification stage, and 18.14 g/L of bioethanol was produced with a glucose to bioethanol conversion yield of 76.23%. The development of this process highlights the feasibility of bioethanol production from macroalgal biomass in the biorefinery concept.
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Affiliation(s)
- E Aparicio
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico
| | - Rosa M Rodríguez-Jasso
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico.
| | - César D Pinales-Márquez
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico
| | - Araceli Loredo-Treviño
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico
| | - Armando Robledo-Olivo
- Food Science & Technology Department, Universidad Autónoma Agraria Antonio Narro, Unidad Saltillo, Blvd Antonio Narro 1923, Buenavista, 25315 Saltillo, Coahuila, Mexico
| | - Cristóbal N Aguilar
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico
| | - Emily T Kostas
- Department of Biochemical Engineering, The Advanced Centre of Biochemical Engineering, Bernard Katz Building, Gower Street, London WC1H 6BT, University College London, London, United Kingdom
| | - Héctor A Ruiz
- Biorefinery Group, Food Research Department, Faculty of Chemistry Sciences, Autonomous University of Coahuila, 25280 Saltillo, Coahuila, Mexico.
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Park YR, Yang JW, Sunwoo IY, Jang BK, Kim SR, Jeong GT, Kim SK. Enhancement of catabolite regulatory genes in Saccharomyces cerevisiae to increase ethanol production using hydrolysate from red seaweed Gloiopeltis furcata. J Biotechnol 2021; 333:1-9. [PMID: 33878391 DOI: 10.1016/j.jbiotec.2021.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 04/09/2021] [Accepted: 04/13/2021] [Indexed: 11/20/2022]
Abstract
Glucose and galactose are monosaccharides obtained from Gloiopeltis furcata (Red algae). A total monosaccharide yield of 62.3 g/L was obtained from G. furcata using thermal acid hydrolysis and enzymatic saccharification. Activated carbon was used to eliminate hydroxymethylfurfural (HMF) from the hydrolysate. Previously obtained monosaccharides are used for ethanol production by Saccharomyces cerevisiae. S. cerevisiae consumes glucose first, then galactose. The methods for reducing fermentation time and increasing the ethanol yield coefficient using the simultaneous consumption of glucose and galactose have been evaluated. Gal3p and Gal80p of S. cerevisiae act as signal transducers that govern the galactose inducer Gal4p mediated transcriptional activation of the Gal gene family. Gal80p binds to Gal4p for transcription deactivation. Therefore, Gal80p was deleted for Gal4p expression without interruption.
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Affiliation(s)
- Yu Rim Park
- Department of Biotechnology, Pukyong National University, Busan, 48513, Republic of Korea
| | - Ji Won Yang
- Department of Biotechnology, Pukyong National University, Busan, 48513, Republic of Korea
| | - In Yung Sunwoo
- Department of Chemistry, Umeå University, SE-90187, Umeå, Sweden
| | - Byeong-Kwan Jang
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Soo Rin Kim
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Gwi-Taek Jeong
- Department of Biotechnology, Pukyong National University, Busan, 48513, Republic of Korea
| | - Sung-Koo Kim
- Department of Biotechnology, Pukyong National University, Busan, 48513, Republic of Korea.
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Ra CH, Seo JH, Jeong GT, Kim SK. Evaluation of 2,3-Butanediol Production from Red Seaweed Gelidium amansii Hydrolysates Using Engineered Saccharomyces cerevisiae. J Microbiol Biotechnol 2020; 30:1912-1918. [PMID: 32958731 PMCID: PMC9728296 DOI: 10.4014/jmb.2007.07037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/15/2020] [Accepted: 09/18/2020] [Indexed: 12/15/2022]
Abstract
Hyper-thermal (HT) acid hydrolysis of red seaweed Gelidium amansii was performed using 12% (w/v) slurry and an acid mix concentration of 180 mM at 150°C for 10 min. Enzymatic saccharification when using a combination of Celluclast 1.5 L and CTec2 at a dose of 16 U/ml led to the production of 12.0 g/l of reducing sugar with an efficiency of enzymatic saccharification of 13.2%. After the enzymatic saccharification, 2,3-butanediol (2,3-BD) fermentation was carried out using an engineered S. cerevisiae strain. The use of HT acid-hydrolyzed medium with 1.9 g/l of 5-hydroxymethylfurfural showed a reduction in the lag time from 48 to 24 h. The 2,3-BD concentration and yield coefficient at 72 h were 14.8 g/l and 0.30, respectively. Therefore, HT acid hydrolysis and the use of the engineered S. cerevisiae strain can enhance the overall 2,3-BD yields from G. amansii seaweed.
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Affiliation(s)
- Chae Hun Ra
- Department of Food Science and Biotechnology, College of Engineering, Global K-Food Research Center, Hankyong National University, Anseong 7579, Republic of Korea
| | - Jin-Ho Seo
- Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul 0886, Republic of Korea
| | - Gwi-Taek Jeong
- Department of Biotechnology, Pukyong National University, Busan 4851, Republic of Korea
| | - Sung-Koo Kim
- Department of Biotechnology, Pukyong National University, Busan 4851, Republic of Korea,Corresponding author Phone +82-51-629-5868 Fax: + 82-51-629 5863 E-mail:
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Martín-Lara M, Chica-Redecillas L, Pérez A, Blázquez G, Garcia-Garcia G, Calero M. Liquid Hot Water Pretreatment and Enzymatic Hydrolysis as a Valorization Route of Italian Green Pepper Waste to Delivery Free Sugars. Foods 2020; 9:E1640. [PMID: 33182839 PMCID: PMC7697518 DOI: 10.3390/foods9111640] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/15/2020] [Accepted: 11/05/2020] [Indexed: 12/17/2022] Open
Abstract
In this work, liquid hot water pretreatment (autohydrolysis) was used to improve enzymatic hydrolysis of a commonly consumed vegetable waste in Spain, Italian green pepper, to finally produce fermentable sugars. Firstly, the effect of temperature and contact time on sugar recovery during pretreatment (in insoluble solid and liquid fraction) was studied in detail. Then, enzymatic hydrolysis using commercial cellulase was performed with the insoluble solid resulting from pretreatment. The objective was to compare results with and without pretreatment. The results showed that the pretreatment step was effective to facilitate the sugars release in enzymatic hydrolysis, increasing the global sugar yield. This was especially notable when pretreatment was carried out at 180 °C for 40 min for glucose yields. In these conditions a global glucose yield of 61.02% was obtained. In addition, very low concentrations of phenolic compounds (ranging from 69.12 to 82.24 mg/L) were found in the liquid fraction from enzymatic hydrolysis, decreasing the possibility of fermentation inhibition produced by these components. Results showed that Italian green pepper is an interesting feedstock to obtain free sugars and prevent the enormous quantity of this food waste discarded annually.
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Affiliation(s)
- M.A. Martín-Lara
- Chemical Engineering Department, Faculty of Sciences, University of Granada, Avda. Fuentenueva, s/n, 18071 Granada, Spain; (L.C.-R.); (A.P.); (G.B.); (M.C.)
| | - L. Chica-Redecillas
- Chemical Engineering Department, Faculty of Sciences, University of Granada, Avda. Fuentenueva, s/n, 18071 Granada, Spain; (L.C.-R.); (A.P.); (G.B.); (M.C.)
| | - A. Pérez
- Chemical Engineering Department, Faculty of Sciences, University of Granada, Avda. Fuentenueva, s/n, 18071 Granada, Spain; (L.C.-R.); (A.P.); (G.B.); (M.C.)
| | - G. Blázquez
- Chemical Engineering Department, Faculty of Sciences, University of Granada, Avda. Fuentenueva, s/n, 18071 Granada, Spain; (L.C.-R.); (A.P.); (G.B.); (M.C.)
| | - G. Garcia-Garcia
- Department of Chemical and Biological Engineering, The University of Sheffield, Sir Robert Hadfield Building, Sheffield S1 3JD, UK;
| | - M. Calero
- Chemical Engineering Department, Faculty of Sciences, University of Granada, Avda. Fuentenueva, s/n, 18071 Granada, Spain; (L.C.-R.); (A.P.); (G.B.); (M.C.)
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Park Y, Sunwoo IY, Yang J, Jeong GT, Kim SK. Comparison of Ethanol Yield Coefficients Using Saccharomyces cerevisiae, Candida lusitaniae, and Kluyveromyces marxianus Adapted to High Concentrations of Galactose with Gracilaria verrucosa as Substrate. J Microbiol Biotechnol 2020; 30:930-936. [PMID: 32238769 PMCID: PMC9728270 DOI: 10.4014/jmb.2002.02014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 03/15/2020] [Indexed: 12/15/2022]
Abstract
The red seaweed Gracilaria verrucosa has been used for the production of bioethanol. Pretreatment for monosaccharide production was carried out with 12% (w/v) G. verrucosa slurry and 500 mM HNO3 at 121°C for 90 min. Enzymatic hydrolysis was performed with a mixture of commercial enzymes (Cellic C-Tec 2 and Celluclast 1.5 L; 16 U/ml) at 50°C and 150 rpm for 48 h. G. verrucosa was composed of 66.9% carbohydrates. In this study, 61.0 g/L monosaccharides were obtained from 120.0 g dw/l G. verrucosa. The fermentation inhibitors such as hydroxymethylfurfural (HMF), levulinic acid, and formic acid were produced during pretreatment. Activated carbon was used to remove HMF. Wildtype and adaptively evolved Saccharomyces cerevisiae, Candida lusitaniae, and Kluyveromyces marxianus were used for fermentation to evaluate ethanol production.
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Affiliation(s)
- Yurim Park
- Department of Biotechnology, Pukyong National University, Busan 48513, Republic of Korea
| | - In Yung Sunwoo
- Department of Biotechnology, Pukyong National University, Busan 48513, Republic of Korea
| | - Jiwon Yang
- Department of Biotechnology, Pukyong National University, Busan 48513, Republic of Korea
| | - Gwi-Teak Jeong
- Department of Biotechnology, Pukyong National University, Busan 48513, Republic of Korea
| | - Sung-Koo Kim
- Department of Biotechnology, Pukyong National University, Busan 48513, Republic of Korea,Corresponding author Phone: +82-51-629-5868 Fax: + 82-51-629-5863 E-mail:
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Sukwong P, Sunwoo IY, Jeong DY, Kim SR, Jeong GT, Kim SK. Improvement of bioethanol production by Saccharomyces cerevisiae through the deletion of GLK1, MIG1 and MIG2 and overexpression of PGM2 using the red seaweed Gracilaria verrucosa. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.10.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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