1
|
Núñez-Serrano A, García-Reyes RB, Solís-Pereira S, García-González A. Production and immobilization of pectinases from Penicillium crustosum in magnetic core-shell nanostructures for juice clarification. Int J Biol Macromol 2024; 263:130268. [PMID: 38387627 DOI: 10.1016/j.ijbiomac.2024.130268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024]
Abstract
Global market of food enzymes is held by pectinases, mostly sourced from filamentous fungi via submerged fermentation. Given the one-time use nature of enzymes to clarify juices and wines, there is a crucial need to explore alternatives for enzyme immobilization, enabling their reuse in food applications. In this research, an isolated fungal strain (Penicillium crustosum OR889307) was evaluated as a new potential pectinase producer in submerged fermentation. Additionally, the enzyme was immobilized in magnetic core-shell nanostructures for juice clarification. Findings revealed that Penicillium crustosum exhibited enzymatic activities higher than other Penicillium species, and pectinase production was enhanced with lemon peel as a cosubstrate in submerged fermentation. The enzyme production (548.93 U/mL) was optimized by response surface methodology, determining the optimal conditions at 35 °C and pH 6.0. Subsequently, the enzyme was covalently immobilized on synthesized magnetic core-shell nanoparticles. The immobilized enzyme exhibited superior stability at higher temperatures (50 °C) and acidic conditions (pH 4.5). Finally, the immobilized pectinases decreased 30 % the orange juice turbidity and maintained 84 % of the enzymatic activity after five consecutive cycles. In conclusion, Penicillium crustosum is a proven pectinase producer and these enzymes immobilized on functionalized nanoparticles improve the stability and reusability of pectinase for juice clarification.
Collapse
Affiliation(s)
- Arely Núñez-Serrano
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Av. Universidad S/N, Cd. Universitaria, C.P. 66455 San Nicolás de los Garza, Nuevo León, Mexico
| | - Refugio Bernardo García-Reyes
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Av. Universidad S/N, Cd. Universitaria, C.P. 66455 San Nicolás de los Garza, Nuevo León, Mexico
| | - Sara Solís-Pereira
- Tecnológico Nacional de México/I.T.Mérida. Unidad de Posgrado e Investigación. Av. Tecnológico Km 5 S/N C.P. 97118, Mérida, Yucatán, México
| | - Alcione García-González
- Universidad Autónoma de Nuevo León (UANL), Facultad de Ciencias Químicas, Av. Universidad S/N, Cd. Universitaria, C.P. 66455 San Nicolás de los Garza, Nuevo León, Mexico.
| |
Collapse
|
2
|
Picão BW, Gonçalves DO, Ribeiro RMMGP, Esperança MN, Peixoto G, Cerri MO. Oxygen transfer and gas holdup in airlift bioreactors assembled with helical flow promoters. Bioprocess Biosyst Eng 2023; 46:681-692. [PMID: 36806976 DOI: 10.1007/s00449-023-02853-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 02/08/2023] [Indexed: 02/23/2023]
Abstract
Bioreactors can perform biochemical conversions mediated by biocatalysts, such as enzymes, animal cells, plants, and microorganisms. Among several existing models, airlift bioreactors are devices with the low shear environment and good mass transfer with low energy consumption, employed in several biochemical processes. The fluid flow is enabled through air injection by the sparger located at the bioreactor base. Despite its simple geometry compared with the conventional bioreactors, airlift performance can be optimized via geometrical modifications. Therefore, the objective of this work was to evaluate the effects of the addition of helical flow promoters, positioned in the riser and/or downcomer regions of an airlift of concentric tubes measuring the volumetric oxygen coefficient (kLa) and gas holdup. The results obtained by varying the gas flow rate from 1.0 to 4.0 vvm allowed the system evaluation of oxygen transfer and gas holdup. The inclusion of helical flow promoters increased the kLa, reaching up to 23% in oxygen transfer compared to tests without helicoids and up to 14% increase in the gas holdup. The inclusion of helical flow promotors was beneficial for all gas flow rates. Thus, including these flow promoters is an effective strategy to increase the oxygen transfer rate for bioprocess optimization.
Collapse
Affiliation(s)
- Bruno W Picão
- Department of Bioprocesses Engineering and Biotechnology, Faculty of Pharmaceutical Sciences, University Estadual Paulista "Júlio de Mesquita Filho", Araraquara, SP, CEP 14801-902, Brazil
| | - Daniele O Gonçalves
- Department of Bioprocesses Engineering and Biotechnology, Faculty of Pharmaceutical Sciences, University Estadual Paulista "Júlio de Mesquita Filho", Araraquara, SP, CEP 14801-902, Brazil
| | - Renata M M G P Ribeiro
- School of Chemical Engineering, Department of Materials and Engineering Bioprocesses, State University of Campinas, Campinas, SP, Brazil
| | - Mateus N Esperança
- Federal Institute of Education, Science and Technology of São Paulo, Campus Capivari, Capivari, SP, 13360-000, Brazil
| | - Guilherme Peixoto
- Department of Bioprocesses Engineering and Biotechnology, Faculty of Pharmaceutical Sciences, University Estadual Paulista "Júlio de Mesquita Filho", Araraquara, SP, CEP 14801-902, Brazil
| | - Marcel O Cerri
- Department of Bioprocesses Engineering and Biotechnology, Faculty of Pharmaceutical Sciences, University Estadual Paulista "Júlio de Mesquita Filho", Araraquara, SP, CEP 14801-902, Brazil.
| |
Collapse
|
3
|
Sirirak K, Powtongsook S, Suanjit S, Jaritkhuan S. Effectiveness of various bioreactors for thraustochytrid culture and production ( Aurantiochytruim limacinum BUCHAXM 122). PeerJ 2021; 9:e11405. [PMID: 34123585 PMCID: PMC8164841 DOI: 10.7717/peerj.11405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 04/14/2021] [Indexed: 11/20/2022] Open
Abstract
This study aimed to develop bioreactors for cultivation of thraustochytrid, Aurantiochytrium limacinum BUCHAXM 122, that are low in cost and simple to operate. Obtaining maximum biomass and fatty acid production was a prerequisite. Three bioreactor designs were used: stirred tank bioreactor (STB), bubble bioreactor (BB) and internal loop airlift bioreactor (ILAB). The bioreactors were evaluated for their influence on oxygen mass transfer coefficient (kLa), using various spargers, mixing speed, and aeration rates. Biomass and DHA production from STB, BB, ILAB were then compared with an incubator shaker, using batch culture experiments. Results showed that a bundle of eight super-fine pore air stones was the best type of aeration sparger for all three bioreactors. Optimal culture conditions in STB were 600 rpm agitation speed and 2 vvm aeration rate, while 2 vvm and 1.5 vvm aeration provided highest biomass productivity in BB and ILAB, respectively. Antifoam agent was needed for all reactor types in order to reduce excessive foaming. Results indicated that with optimized conditions, these bioreactors are capable of thraustochytrid cultivation with a similar efficiency as cultivation using a rotary shaker. STB had the highest kLa and provided the highest biomass of 43.05 ± 0.35 g/L at 48 h. BB was simple in design, had low operating costs and was easy to build, but yielded the lowest biomass (27.50 ± 1.56 g/L). ILAB, on the other hand, had lower kLa than STB, but provided highest fatty acid productivity, of 35.36 ± 2.51% TFA.
Collapse
Affiliation(s)
- Khanoksinee Sirirak
- Graduate Program in Environmental Science, Faculty of Science, Burapha University, Chon Buri, Thailand
| | - Sorawit Powtongsook
- Center of Excellence for Marine Biotechnology, Department of Marine Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Sudarat Suanjit
- Department of Microbiology, Faculty of Science, Burapha University, Chon Buri, Thailand
| | - Somtawin Jaritkhuan
- Department of Aquatic Science, Faculty of Science, Burapha University, Chon Buri, Thailand
| |
Collapse
|
4
|
Integrated enzymatic pretreatment and hydrolysis of apple pomace in a bubble column bioreactor. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107306] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
5
|
Optimized production of Aspergillus aculeatus URM4953 polygalacturonases for pectin hydrolysis in hog plum (Spondias mombin L.) juice. Process Biochem 2019. [DOI: 10.1016/j.procbio.2018.12.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
6
|
Pectin hydrolysis in cashew apple juice by Aspergillus aculeatus URM4953 polygalacturonase covalently-immobilized on calcium alginate beads: A kinetic and thermodynamic study. Int J Biol Macromol 2019; 126:820-827. [DOI: 10.1016/j.ijbiomac.2018.12.236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/28/2018] [Accepted: 12/25/2018] [Indexed: 12/17/2022]
|
7
|
Wu Z. Mixed fermentation of Aspergillus niger and Candida shehatae to produce bioethanol with ionic-liquid-pretreated bagasse. 3 Biotech 2019; 9:41. [PMID: 30675451 PMCID: PMC6328811 DOI: 10.1007/s13205-019-1570-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 01/03/2019] [Indexed: 10/27/2022] Open
Abstract
In this study, bagasse was pretreated with ionic liquid (IL) 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) and 1% NaOH solution for initial activation of bagasse. A mixed fermentation of treated bagasse by Aspergillus niger and Candida shehatae showed the optimal conditions with the addition of C. shehatae 12 h later at a 1:1 proportion to A. niger. To further improve the ethanol production and obtain optimal fermentation conditions, a Plackett-Burman design was applied to screen the significant formulation and process variables. The optimal ethanol fermentation conditions with IL pretreated bagasse were determined using response surface methodology by Box-Behnken design. Three variables "initial pH, (NH4)2SO4, fermentation time" were regarded as significant factors in the optimization study. The resulting optimum fermentation conditions for bioethanol was identified as: initial pH of 5.89, (NH4)2SO4 concentration of 0.40 g/50 mL, and fermentation time of 3.60 days. The verification experimental ethanol concentration was 8.14 g/L, which agreed with the predicted value. An enhancement of approximately 153.58% compared with initial fermentation conditions in ethanol production was found using optimized conditions. It demonstrated that optimization methodology had a positive effect on the improvement of ethanol production. Under the optimal fermentation medium and conditions, the ethanol production with IL-pretreated bagasse and untreated bagasse was 8.14 g/L and 5.03 g/L, respectively, which exhibited 62% increase, compared to initial conditions with production of 3.21 g/L and 2.67 g/L, respectively, which displayed 20% increase. Both under optimal and original fermentation conditions, compared to the fermentation medium with untreated bagasse, all the results indicated that IL-pretreated bagasse resulted in higher ethanol production than untreated bagasse, demonstrating that IL-pretreated bagasse successfully increased the ethanol production in the mixed fermentation by A. niger and C. shehatae.
Collapse
Affiliation(s)
- Zaiqiang Wu
- Center for Molecular Metabolism, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094 China
| |
Collapse
|
8
|
Kinetic and thermodynamic characterization of a novel Aspergillus aculeatus URM4953 polygalacturonase. Comparison of free and calcium alginate-immobilized enzyme. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.07.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
9
|
Silva JDC, de França PRL, Porto TS. Optimized extraction of polygalacturonase from Aspergillus aculeatus URM4953 by aqueous two-phase systems PEG/Citrate. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.04.112] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
10
|
Zheng YX, Wang YL, Pan J, Zhang JR, Dai Y, Chen KY. Semi-continuous production of high-activity pectinases by immobilized Rhizopus oryzae using tobacco wastewater as substrate and their utilization in the hydrolysis of pectin-containing lignocellulosic biomass at high solid content. BIORESOURCE TECHNOLOGY 2017; 241:1138-1144. [PMID: 28673517 DOI: 10.1016/j.biortech.2017.06.066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 06/11/2017] [Accepted: 06/12/2017] [Indexed: 06/07/2023]
Abstract
In this study, highly reactive endo- and exo-polygalacturonases (PGs) were produced from the tobacco industry wastewater using immobilized Rhizopus oryzae. Compared with free cells, immobilized cells increased enzyme activity 2.8-fold and reduced production time to 24h by shake-flask production. Moreover, the immobilized cells enabled the semi-continuous production of enzymes through repeated-batch mode for seven consecutive cycles in a scale-up bioreactor. During the first five cycles, the average endo-PG and exo-PG activities reached 307.5 and 242.6U/ml, respectively. The addition of crude enzyme for the hydrolysis of pectin-containing lignocellulosic biomass under high-gravity conditions increased glucose release 4.2-fold (115.4 vs. 29.0g/L), compared with hydrolysis using cellulase alone. This process achieves the efficient production of pectin-degrading enzymes, provides a cost-effective method for tobacco wastewater treatment, and offers the possibility to obtain fermentable sugars with high-titer from pectin-containing lignocellulosic biomass, which has important potential for the commercial production of bio-fuels.
Collapse
Affiliation(s)
- Yu-Xi Zheng
- Chongqing University, Chongqing 400044, China; Research Center for Tobacco Bioengineering and Technology of Chongqing Science and Technology Commission, Chongqing 401147, China; China Tobacco Chongqing Industrial Co. Ltd., Chongqing 400000, China
| | - Yuan-Liang Wang
- Chongqing University, Chongqing 400044, China; Research Center for Tobacco Bioengineering and Technology of Chongqing Science and Technology Commission, Chongqing 401147, China.
| | - Jun Pan
- Chongqing University, Chongqing 400044, China; Research Center for Tobacco Bioengineering and Technology of Chongqing Science and Technology Commission, Chongqing 401147, China
| | - Jian-Rong Zhang
- Research Center for Tobacco Bioengineering and Technology of Chongqing Science and Technology Commission, Chongqing 401147, China
| | - Ya Dai
- China Tobacco Chongqing Industrial Co. Ltd., Chongqing 400000, China
| | - Kun-Yan Chen
- China Tobacco Chongqing Industrial Co. Ltd., Chongqing 400000, China
| |
Collapse
|
11
|
Hydrodynamics and mass transfer in bubble column, conventional airlift, stirred airlift and stirred tank bioreactors, using viscous fluid: A comparative study. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2016.11.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
12
|
|
13
|
Zeni J, Ambrozini É, Pili J, Cence K, Toniazzo Backes G, Valduga E. Production and characterization ofPenicillium brasilianumpectinases with regard to industrial application. BIOCATAL BIOTRANSFOR 2016. [DOI: 10.3109/10242422.2016.1162788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
14
|
Hansen GH, Lübeck M, Frisvad JC, Lübeck PS, Andersen B. Production of cellulolytic enzymes from ascomycetes: Comparison of solid state and submerged fermentation. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.05.017] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
15
|
Sandri IG, Fontana RC, Moura da Silveira M. Influence of pH and temperature on the production of polygalacturonases by Aspergillus fumigatus. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2014.12.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
16
|
Meneghel L, Reis GP, Reginatto C, Malvessi E, da Silveira MM. Assessment of pectinase production by Aspergillus oryzae in growth-limiting liquid medium under limited and non-limited oxygen supply. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.07.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
17
|
Buyukkileci AO, Lahore MF, Tari C. Utilization of orange peel, a food industrial waste, in the production of exo-polygalacturonase by pellet forming Aspergillus sojae. Bioprocess Biosyst Eng 2014; 38:749-60. [PMID: 25352336 DOI: 10.1007/s00449-014-1315-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 10/19/2014] [Indexed: 11/25/2022]
Abstract
The production of exo-polygalacturonase (exo-PG) from orange peel (OP), a food industrial waste, using Aspergillus sojae was studied in submerged culture. A simple, low-cost, industrially significant medium formulation, composed of only OP and (NH4)2SO4 (AS) was developed. At an inoculum size of 2.8 × 10(3) spores/mL, growth was in the form of pellets, which provided better mixing of the culture broth and higher exo-PG activity. These pellets were successfully used as an inoculum for bioreactors and 173.0 U/mL exo-PG was produced. Fed-batch cultivation further enhanced the exo-PG activity to 244.0 U/mL in 127.5 h. The final morphology in the form of pellets is significant to industrial fermentation easing the subsequent downstream processing. Furthermore, the low pH trend obtained during this fermentation serves an advantage to fungal fermentations prone to contamination problems. As a result, an economical exo-PG production process was defined utilizing a food industrial by-product and producing high amount of enzyme.
Collapse
Affiliation(s)
- Ali Oguz Buyukkileci
- Department of Food Engineering, İzmir Institute of Technology, Gulbahce Campus, 35430, Urla, İzmir, Turkey
| | | | | |
Collapse
|
18
|
Cao J, Zhang HJ, Xu CP. Culture characterization of exopolysaccharides with antioxidant activity produced by Pycnoporus sanguineus in stirred-tank and airlift reactors. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.05.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
19
|
Chen L, Madl RL, Vadlani PV. Nutritional Enhancement of Soy Meal viaAspergillus oryzaeSolid-State Fermentation. Cereal Chem 2013. [DOI: 10.1094/cchem-01-13-0007-r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Liyan Chen
- Bioprocessing and Renewable Energy Laboratory, Department of Grain Science and Industry, Kansas State University, 1980 Kimball Ave., Manhattan, KS, 66502, U.S.A
| | - Ronald L. Madl
- Bioprocessing and Renewable Energy Laboratory, Department of Grain Science and Industry, Kansas State University, 1980 Kimball Ave., Manhattan, KS, 66502, U.S.A
| | - Praveen V. Vadlani
- Bioprocessing and Renewable Energy Laboratory, Department of Grain Science and Industry, Kansas State University, 1980 Kimball Ave., Manhattan, KS, 66502, U.S.A
- Corresponding author. Phone: (785) 532-5011. Fax: (785) 532-7193. E-mail:
| |
Collapse
|
20
|
Michelin M, de Oliveira Mota AM, Polizeli MDLTDM, da Silva DP, Vicente AA, Teixeira JA. Influence of volumetric oxygen transfer coefficient (kLa) on xylanases batch production by Aspergillus niger van Tieghem in stirred tank and internal-loop airlift bioreactors. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
21
|
Ritter CET, Fontana RC, Camassola M, da Silveira MM, Dillon AJP. The influence of sorbitol on the production of cellulases and xylanases in an airlift bioreactor. BIORESOURCE TECHNOLOGY 2013; 148:86-90. [PMID: 24045195 DOI: 10.1016/j.biortech.2013.08.125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/11/2013] [Accepted: 08/20/2013] [Indexed: 06/02/2023]
Abstract
The production of cellulases and xylanases by Penicillium echinulatum in an airlift bioreactor was evaluated. In batch production, we tested media with isolated or associated cellulose and sorbitol. In fed-batch production, we tested cellulose addition at two different times, 30 h and 48 h. Higher liquid circulation velocities in the downcomer were observed in sorbitol 10 g L(-1) medium. In batch production, higher FPA (filter paper activity) and endoglucanase activities were obtained with cellulose (7.5 g L(-1)) and sorbitol (2.5 g L(-1)), 1.0 U mL(-1) (120 h) and 6.4 U m L(-1) (100 h), respectively. For xylanases, the best production condition was cellulose 10 g L(-1), which achieved 5.5 U mL(-1) in 64 h. The fed-batch process was favorable for obtaining xylanases, but not for FPA and endoglucanases, suggesting that in the case of cellulases, the inducer must be added early in the process.
Collapse
Affiliation(s)
- Carla Eliana Todero Ritter
- Institute of Biotechnology, University of Caxias do Sul, Caixa Postal 1352, 95001-970 Caxias do Sul, RS, Brazil
| | | | | | | | | |
Collapse
|
22
|
Use of pectinases produced by a new strain of Aspergillus niger for the enzymatic treatment of apple and blueberry juice. Lebensm Wiss Technol 2013. [DOI: 10.1016/j.lwt.2012.10.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
23
|
Maciel M, Ottoni C, Santos C, Lima N, Moreira K, Souza-Motta C. Production of polygalacturonases by Aspergillus section Nigri strains in a fixed bed reactor. Molecules 2013; 18:1660-71. [PMID: 23358324 PMCID: PMC6269776 DOI: 10.3390/molecules18021660] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 01/09/2013] [Accepted: 01/11/2013] [Indexed: 11/16/2022] Open
Abstract
Polygalacturonases (PG) are pectinolytic enzymes that have technological, functional and biological applications in food processing, fruit ripening and plant-fungus interactions, respectively. In the present, a microtitre plate methodology was used for rapid screening of 61 isolates of fungi from Aspergillus section Nigri to assess production of endo- and exo-PG. Studies of scale-up were carried out in a fixed bed reactor operated under different parameters using the best producer strain immobilised in orange peels. Four experiments were conducted under the following conditions: the immobilised cells without aeration; immobilised cells with aeration; immobilised cells with aeration and added pectin; and free cells with aeration. The fermentation was performed for 168 h with removal of sample every 24 h. Aspergillus niger strain URM 5162 showed the highest PG production. The results obtained indicated that the maximum endo- and exo-PG activities (1.18 U·mL−1 and 4.11 U·mL−1, respectively) were obtained when the reactor was operating without aeration. The microtitre plate method is a simple way to screen fungal isolates for PG activity detection. The fixed bed reactor with orange peel support and using A. niger URM 5162 is a promising process for PG production at the industrial level.
Collapse
Affiliation(s)
- Marília Maciel
- Mycology Department, Federal University of Pernambuco, Cidade Universitária, Recife 50670-420, Pernambuco, Brazil; E-Mail:
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Micoteca da Universidade do Minho, University of Minho, Campus of Gualtar, Braga 4710-057, Portugal; E-Mails: (C.O.); (C.S.); (N.L.)
| | - Cristiane Ottoni
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Micoteca da Universidade do Minho, University of Minho, Campus of Gualtar, Braga 4710-057, Portugal; E-Mails: (C.O.); (C.S.); (N.L.)
| | - Cledir Santos
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Micoteca da Universidade do Minho, University of Minho, Campus of Gualtar, Braga 4710-057, Portugal; E-Mails: (C.O.); (C.S.); (N.L.)
| | - Nelson Lima
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Micoteca da Universidade do Minho, University of Minho, Campus of Gualtar, Braga 4710-057, Portugal; E-Mails: (C.O.); (C.S.); (N.L.)
| | - Keila Moreira
- Academic Unit of Garanhuns, Federal Rural University of Pernambuco, Garanhuns 55292-270, Pernambuco, Brazil; E-Mail:
| | - Cristina Souza-Motta
- Mycology Department, Federal University of Pernambuco, Cidade Universitária, Recife 50670-420, Pernambuco, Brazil; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +55-81-2126-8948; Fax: +55-81-2126-8480
| |
Collapse
|
24
|
Fontana RC, da Silveira MM. Production of polygalacturonases by Aspergillus oryzae in stirred tank and internal- and external-loop airlift reactors. BIORESOURCE TECHNOLOGY 2012; 123:157-163. [PMID: 22940313 DOI: 10.1016/j.biortech.2012.07.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Revised: 07/13/2012] [Accepted: 07/16/2012] [Indexed: 06/01/2023]
Abstract
The production of endo- and exo-polygalacturonase (PG) by Aspergillus oryzae was assessed in stirred tank reactors (STRs), internal-loop airlift reactors (ILARs) and external-loop airlift reactors (ELARs). For STR production, we compared culture media formulated with either pectin (WBE) or partially hydrolyzed pectin. The highest enzyme activities were obtained in medium that contained 50% pectin in hydrolyzed form (WBE5). PG production in the three reactor types was compared for WBE5 and low salt WBE medium, with additional salts added at 48, 60 and 72h (WBES). The ELARs performed better than the ILARs in WBES medium where the exo-PG was the same concentration as for STRs and the endo-PG was 20% lower. These results indicate that PG production is higher under experimental conditions that result in higher cell growth with minimum pH values less than 3.0.
Collapse
Affiliation(s)
- Roselei Claudete Fontana
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Caixa Postal 1352, CEP 95001-970, Caxias do Sul, RS, Brazil.
| | | |
Collapse
|
25
|
Gahlawat G, Sengupta B, Srivastava AK. Enhanced production of poly(3-hydroxybutyrate) in a novel airlift reactor with in situ cell retention using Azohydromonas australica. ACTA ACUST UNITED AC 2012; 39:1377-84. [DOI: 10.1007/s10295-012-1138-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Accepted: 04/18/2012] [Indexed: 10/28/2022]
Abstract
Abstract
Economic production of biodegradable plastics is a challenge particularly because of high substrate and energy cost inputs for its production. Research efforts are being directed towards innovations to minimize both of the above costs to economize polyhydroxybutyrate (PHB) production. A novel airlift reactor (ALR) with outer aeration and internal settling was utilized in this investigation. Although it featured no power consumption for agitation, it facilitated increased oxygen transfer rate and better cell retention than stirred tank reactor (STR), thereby resulting in enhanced PHB productivity. ALR with in situ cell retention demonstrated a significant improvement in biomass concentration and biopolymer accumulation. The total PHB production rate, specific biomass, and product yield in the ALR were observed to be 0.84 g/h, 0.43 g/g, and 0.32 g/g, respectively. The studies revealed that the volumetric oxygen mass transfer rate and mixing time for ALR were 0.016 s−1 and 3.73 s, respectively, at 2.0 vvm as compared with corresponding values of 0.005 s−1 and 4.95 s, respectively, in STR. This demonstrated that ALR has better oxygen mass transfer and mixing efficiency than STR. Hence, ALR with cell retention would serve as a better bioreactor design for economic biopolymer production than STR, particularly due to its lower cost of operation and simplicity along with its enhanced oxygen and heat transfer rates.
Collapse
Affiliation(s)
- Geeta Gahlawat
- grid.417967.a 0000000405588755 Department of Biochemical Engineering and Biotechnology Indian Institute of Technology Delhi 110016 Hauz Khas New Delhi India
| | - Bedoshree Sengupta
- grid.411639.8 0000000105715193 Manipal Institute of Technology 576104 Manipal Karnataka India
| | - Ashok K Srivastava
- grid.417967.a 0000000405588755 Department of Biochemical Engineering and Biotechnology Indian Institute of Technology Delhi 110016 Hauz Khas New Delhi India
| |
Collapse
|
26
|
Ruiz HA, Rodríguez-Jasso RM, Rodríguez R, Contreras-Esquivel JC, Aguilar CN. Pectinase production from lemon peel pomace as support and carbon source in solid-state fermentation column-tray bioreactor. Biochem Eng J 2012. [DOI: 10.1016/j.bej.2012.03.007] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
27
|
Cerri MO, Badino AC. Shear conditions in clavulanic acid production by Streptomyces clavuligerus in stirred tank and airlift bioreactors. Bioprocess Biosyst Eng 2012; 35:977-84. [DOI: 10.1007/s00449-012-0682-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Accepted: 01/11/2012] [Indexed: 10/14/2022]
|
28
|
Hii KL, Yeap SP, Mashitah MD. Cellulase production from palm oil mill effluent in Malaysia: Economical and technical perspectives. Eng Life Sci 2011. [DOI: 10.1002/elsc.201000228] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
|
29
|
Evaluation of production and characterization of polygalacturonase by Aspergillus niger ATCC 9642. FOOD AND BIOPRODUCTS PROCESSING 2011. [DOI: 10.1016/j.fbp.2010.10.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
30
|
Production of xylanolytic enzymes by Aspergillus terricola in stirred tank and airlift tower loop bioreactors. J Ind Microbiol Biotechnol 2011; 38:1979-84. [DOI: 10.1007/s10295-011-0987-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Accepted: 05/10/2011] [Indexed: 11/30/2022]
|