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Helal MM, Sakr OG, Sadik MW, Radwan MA, Khattab MS, El-Manylawi MA. Performance and nutrigenomics modulations in response to the inclusion of biologically treated date-palm mulch and enzyme mixture in the diets of growing rabbits. Anim Biotechnol 2023; 34:4219-4235. [PMID: 36332181 DOI: 10.1080/10495398.2022.2140055] [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] [Indexed: 11/06/2022]
Abstract
This study was conducted to evaluate the effects of Allzyme addition on biologically-treated date-palm mulch (DPM) based diets for growing rabbits. DPM was treated by Trichoderma viride, Trichoderma reesi 230, Plorotus oysterous, and Phanaerochyte chrysosporium. Eighty rabbits were assigned to four groups: a control group, tDPM (10% tDPM inclusion of total diet), Allzyme (Allzyme supplementation), and tDPM + Allzyme (tDPM and Allzyme supplementation). The biological treatment resulted in a significant increase in crude protein and reductions in crude fiber. There was an interaction between tDPM and Allzyme at 9- and 10-week BW. The negative effects of tDPM on BW started at 8-week of age. The tDPM had unfavorable effects on slaughter and meat quality traits. The tDPM-by-Allzyme interaction affected total protein and globulin concentrations. However, blood glucose concentration was influenced by both tDPM and Allzyme. A significant tDPM effect was detected on the expression of INSR, GHSR, and IGF1 genes. However, the Allzyme effect was significant for PPARg and FASN genes. In conclusion, feeding tDPM negatively impacted rabbit's performance, however, Allzyme supplementation alleviated some of those effects. Accordingly, tDPM is recommended to be included in the diets of growing rabbits along with Allzyme supplementation.
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Affiliation(s)
- Mostafa M Helal
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - Osama G Sakr
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - Mahmoud W Sadik
- Department of Microbiology, Faculty of Agriculture, Cairo University, Giza, Egypt
- Department of Environmental Biotechnology, College of Biotechnology, Misr University of Science of Technology, Giza, Egypt
| | - Mohamed A Radwan
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - Marwa S Khattab
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Mohamed A El-Manylawi
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
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El Sheikha AF, Ray RC. Bioprocessing of Horticultural Wastes by Solid-State Fermentation into Value-Added/Innovative Bioproducts: A Review. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2021.2004161] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Aly Farag El Sheikha
- College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, China
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Canada
- Bioengineering and Technological Research Centre for Edible and Medicinal Fungi, Jiangxi Agricultural University, Nanchang, China
- Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang, China
| | - Ramesh C. Ray
- ICAR-Central Tuber Crops Research Institute (Regional Centre), Bhubaneswar, India
- Centre for Food Biology & Environment Studies, Bhubaneswar, India
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Effect of Substrate Characteristics on the Growth and Sporulation of Two Biocontrol Microorganisms during Solid State Cultivation. FERMENTATION 2020. [DOI: 10.3390/fermentation6030069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Biocontrol agents are a group of naturally occurring organisms capable of interrupting the lifespan and suppressing the propagation of disease organisms. The use of biocontrol agents offers an environment-friendly and sustainable solution to the synthetic agrochemicals. In this study, we investigated parboiled rice and millets as substrates for spore production of two model biocontrol microorganisms (Bacillus pumilus and Streptomyces griseus) under solid state cultivation (SSC) conditions. The effects of cultivation parameters such as initial moisture content, water activity, and cultivation time on microbial growth and spore production were studied. Furthermore, texture profile analysis was performed to test the stress and strain curve and the hardness and stickiness of the substrates. The greatest spore production occurred at 50% moisture content with millets as a substrate, yielding a count of 1.34 × 108 spores/g-wet-substrate enumerated with plate count analysis and 1.70 × 108 events/g-wet-substrate using flow cytometry analysis. Substrate texture profile was highly correlative to the initial moisture content and substrate type and all proved to be essential process variables in controlling the bacterial growth and sporulation during SSC processes.
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Manan MA, Webb C. Newly designed multi-stacked circular tray solid-state bioreactor: analysis of a distributed parameter gas balance during solid-state fermentation with influence of variable initial moisture content arrangements. BIORESOUR BIOPROCESS 2020. [DOI: 10.1186/s40643-020-00307-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The growth of Aspergillus awamori and Aspergillus oryzae in a self-designed, multi-stacked circular tray solid-state bioreactor (SSB), operating in solid-state fermentation (SSF) conditions at a laboratory scale, was studied. The bioreactor was divided into six layers by six circular perforated trays. Wheat bran was used as both a carrier of bound mycelia and nutrient medium for the growth of A. awamori and A. oryzae. The new tray SSB is equipped with instrumentation (an oxygen (O2)/carbon dioxide (CO2) gas analyser and a thermocouple) to continuously monitor O2 consumption and CO2 and heat evolved, which can directly be used to monitor the fungal biomass. The integrated Gompertz model was used to describe the accumulated evolution of CO2.
Results
The results from the models strongly suggest that the evolved and accumulated CO2 can be used to excellently describe fungal growth. Another important parameter that can be determined by the gas balance method is the respiratory quotient (RQ). This is the ratio of the CO2 evolution rate (CER) to the O2 uptake rate (OUR). The use of CER and OUR confirmed that correlated measurements of microbial activity are available, and the determination of RQ may propose an explanation for differences from expected levels. The kinetic behaviour of the fungal culture, using raw CO2, which represents an accumulation term, was integrated with respect to time and fitted to a Gompertz model, a log-like equation. The model can be used to generate parameter values that may be used to verify the experimental data, and also to simulate and optimise the process.
Conclusion
Overall, A. awamori and A. oryzae have their own ability to degrade and utilise the complex compositions contained in the solid substrate, and fermentation conditions may lead to possible comparisons. In addition, multi-stacked circular tray SSB systems demonstrated an excellent system for further investigations of mass transfer and possibly for large-scale operation, though considerable optimisation work remains to be done; for example, the height/diameter ratio and total number of trays should be optimised.
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Vieira WF, Correa HT, Silveira Campos E, Sette LD, Pessoa A, Cardoso VL, Coutinho Filho U. A novel multiple reactor system for the long-term production of L-asparaginase by Penicillium sp. LAMAI 505. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Fang J, Huan C, Liu Y, Xu L, Yan Z. Bioconversion of agricultural waste into poly-γ-glutamic acid in solid-state bioreactors at different scales. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 102:939-948. [PMID: 31855694 DOI: 10.1016/j.wasman.2019.12.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 11/11/2019] [Accepted: 12/10/2019] [Indexed: 06/10/2023]
Abstract
With the purpose of developing a novel approach of agricultural waste treatment and overcoming bottlenecks for upscaling solid-state fermentation processes, the type of aerated, continuously stirred solid-state bioreactors were used for the production of γ-PGA by Bacillus amyloliquefaciens JX-6. Using corn stalk and soybean meal, the most common agricultural waste in China, as solid substrates, the maximum production of γ-PGA was 116.88 ± 5.05 g/kg and 102.48 ± 3.30 g/kg in 50 L and 150 L bioreactors, respectively. Production of γ-PGA in 50 L bioreactor was higher than in 150 L bioreactor, demonstrating that a reduction in γ-PGA production occurred as the fermentation system enlarged. An analysis of the interactions among fermentation parameters (temperature, moisture, and pH), γ-PGA production, solid substrates and bacterial communities indicated that different bioreactor capacities caused changes in fermentation parameters and bacterial communities, which in turn affected substrate utilization and γ-PGA production. Overall, obtaining considerable amounts of γ-PGA under non-sterilized fermentation expressed that JX-6 has excellent abilities to adapt to these substrates and conditions. Bioconversion of agricultural waste into γ-PGA in scale-up fermentation was successfully conducted by creating a more stable and suitable fermentation environment in bioreactors.
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Affiliation(s)
- Junnan Fang
- University of Chinese Academy of Sciences, Beijing 100049, PR China; Key Laboratory of Environmental and Applied Microbiology, CAS, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - ChenChen Huan
- Key Laboratory of Environmental and Applied Microbiology, CAS, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Yang Liu
- University of Chinese Academy of Sciences, Beijing 100049, PR China; Key Laboratory of Environmental and Applied Microbiology, CAS, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Lishang Xu
- Key Laboratory of Environmental and Applied Microbiology, CAS, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Zhiying Yan
- Key Laboratory of Environmental and Applied Microbiology, CAS, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China.
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Oviedo-Lopera JC, Zartha-Sossa JW, Zapata-Ruiz DL, Bohorquez-Naranjo I, Morales-Arevalo KS. Systematic Review and Study of S Curves for Biomass Quantification in Solid-state Fermentation (SSF) and Digital Image Processing (DIP) Applied to Biomass Measurement in Food Processes. Recent Pat Biotechnol 2020; 14:194-202. [PMID: 32164521 DOI: 10.2174/1872208314666200312094447] [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: 11/18/2019] [Revised: 12/16/2019] [Accepted: 02/11/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND There are several methods for the quantification of biomass in SSF, such as glucosamine measurement, ergosterol content, protein concentration, change in dry weight or evolution of CO2 production. However, all have drawbacks when obtaining accurate data on the progress of the SSF due to the dispersion in cell growth on the solid substrate, and the difficulty encountered in separating the biomass. Studying the disadvantages associated with the process of biomass quantification in SSF, the monitoring of the growth of biomass by a technique known as digital image processing (DIP), consists of obtaining information on the production of different compounds during fermentation, using colorimetric methods based on the pixels that are obtained from photographs. OBJECTIVE The purpose of this study was to know about the state of the technology and the advantages of DIP. METHODS The methodology employed four phases; the first describes the search equations for the SSF and the DIP. A search for patents related to SSF and DIP carried out in the Free Patents Online and Patent inspiration databases. Then there is the selection of the most relevant articles in each of the technologies. As a third step, modifications for obtaining the best adjustments were also carried out. Finally, the analysis of the results was done and the inflection years were determined by means of six mathematical models widely studied. RESULTS For these models, the inflection years were 2018 and 2019 for both the SSF and the DIP. Additionally, the main methods for the measurement of biomass in SSF were found, and are also indicated in the review, as DIP measurement processes have already been carried out using the same technology. CONCLUSION In addition, the DIP has shown satisfactory results and could be an interesting alternative for biomass measurement in SSF, due to its ease and versatility.
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Affiliation(s)
- Juan C Oviedo-Lopera
- Ingenieria Agroindustrial, Universidad Pontificia Bolivariana, Medellin, Colombia
| | - Jhon W Zartha-Sossa
- Ingenieria Agroindustrial, Universidad Pontificia Bolivariana, Medellin, Colombia
| | - Diego L Zapata-Ruiz
- Ingenieria Agroindustrial, Universidad Pontificia Bolivariana, Medellin, Colombia
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Zeng YJ, Yang HR, Wu XL, Peng F, Huang Z, Pu L, Zong MH, Yang JG, Lou WY. Structure and immunomodulatory activity of polysaccharides from Fusarium solani DO7 by solid-state fermentation. Int J Biol Macromol 2019; 137:568-575. [DOI: 10.1016/j.ijbiomac.2019.07.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 12/12/2022]
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Abdul Manan M, Webb C. Control strategies with variable air arrangements, forcefully aerated in single circular tray solid state bioreactors with modified Gompertz model and analysis of a distributed parameter gas balance. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2018.1530950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Musaalbakri Abdul Manan
- Enzyme and Fermentation Technology Programme, Biotechnology and Nanotechnology Research Centre Malaysian Agricultural Research and Development Institute (MARDI), Persiaran MARDI – UPM, Serdang, Malaysia
- Faculty of Engineering and Physical Sciences, Satake Centre for Grain Process Engineering School of Chemical Engineering and Analytical Science, University of Manchester, Manchester, UK
| | - Colin Webb
- Faculty of Engineering and Physical Sciences, Satake Centre for Grain Process Engineering School of Chemical Engineering and Analytical Science, University of Manchester, Manchester, UK
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Comparative Study of Cellulase Production Using Submerged and Solid-State Fermentation. Fungal Biol 2019. [DOI: 10.1007/978-3-030-14726-6_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Doriya K, Kumar DS. Solid state fermentation of mixed substrate for l-asparaginase production using tray and in-house designed rotary bioreactor. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.07.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Carvalho EA, Nunes LV, Goes LMDS, Silva EGPD, Franco M, Gross E, Uetanabaro APT, Costa AMD. Peach-palm (Bactris gasipaes Kunth.) waste as substrate for xylanase production by Trichoderma stromaticum AM7. CHEM ENG COMMUN 2018. [DOI: 10.1080/00986445.2018.1425208] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Elck Almeida Carvalho
- Food Technology Centre, Federal Institute of Education Science and Technology Baiano, Uruçuca, Bahia, Brazil
| | - Laís Vieira Nunes
- Department of Health Sciences, Technology and Sciences College, Itabuna, Bahia, Brazil
| | | | | | - Marcelo Franco
- Department of Exact and Technological Sciences, Santa Cruz State University, Ilhéus, Bahia, Brazil
| | - Eduardo Gross
- Department of Agricultural Science, Santa Cruz State University, Ilhéus, Bahia, Brazil
| | | | - Andréa Miura da Costa
- Department of Biological Sciences, Santa Cruz State University, Ilhéus, Bahia, Brazil
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Ashok A, Doriya K, Rao DRM, Kumar DS. Design of solid state bioreactor for industrial applications: An overview to conventional bioreactors. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2017. [DOI: 10.1016/j.bcab.2016.10.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Bayitse R, Hou X, Laryea G, Bjerre AB. Protein enrichment of cassava residue using Trichoderma pseudokoningii (ATCC 26801). AMB Express 2015; 5:80. [PMID: 26695947 PMCID: PMC4688282 DOI: 10.1186/s13568-015-0166-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 12/11/2015] [Indexed: 11/30/2022] Open
Abstract
Solid state fermentation of cassava residue with Trichodermapseudokoningii was conducted for 12 days. The fermentation was carried out at temperature of 24 °C and a pH of 5.0. Urea and ammonium sulphate were used as nutrient sources and moisture content varied at 60 and 70 %. Protein content of the unfermented cassava residue was increased from 8.4 to 12.5 % when urea was used with initial moisture content of 70 % w/v. This study showed that a maximum of 48.1 % protein enrichment was achieved using urea as a source of nutrient for the growth of the fungi, whiles ammonium sulphate achieved 36.9 % protein enrichment under the same condition.
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Osmolovskiy AA, Baranova NA, Kreier VG, Kurakov AV, Egorov NS. Solid-state and membrane-surface liquid cultures of micromycetes: Specific features of their development and enzyme production (a Review). APPL BIOCHEM MICRO+ 2014. [DOI: 10.1134/s0003683814030107] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Protein enrichment and digestion improvement of napiergrass and pangolagrass with solid-state fermentation. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2013; 46:171-9. [DOI: 10.1016/j.jmii.2012.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 04/02/2012] [Accepted: 04/10/2012] [Indexed: 11/19/2022]
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Ajila CM, Brar SK, Verma M, Tyagi RD, Godbout S, Valéro JR. Bio-processing of agro-byproducts to animal feed. Crit Rev Biotechnol 2012; 32:382-400. [PMID: 22380921 DOI: 10.3109/07388551.2012.659172] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Agricultural and food-industry residues constitute a major proportion (almost 30%) of worldwide agricultural production. These wastes mainly comprise lignocellulosic materials, fruit and vegetable wastes, sugar-industry wastes as well as animal and fisheries refuse and byproducts. Agro-residues are rich in many bioactive and nutraceutical compounds, such as polyphenolics, carotenoids and dietary fiber among others. Agro residues are a major valuable biomass and present potential solutions to problems of animal nutrition and the worldwide supply of protein and calories, if appropriate technologies can be used for their valorization by nutrient enrichment. Technologies available for protein enrichment of these wastes include solid substrate fermentation, ensiling, and high solid or slurry processes. Technologies to be developed for the reprocessing of these wastes need to take account of the peculiarities of individual wastes and the environment in which they are generated, reprocessed, and used. In particular, such technologies need to deliver products that are safe, not just for animal feed use, but also from the perspective of human feeding. This review focuses on the major current applications of solid-state fermentation in relation to the feed sector.
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Affiliation(s)
- C M Ajila
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, Canada G1K 9A9
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Hu CC, Liu LY, Yang SS. Protein enrichment, cellulase production and in vitro digestion improvement of pangolagrass with solid state fermentation. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2012; 45:7-14. [DOI: 10.1016/j.jmii.2011.09.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Revised: 03/27/2011] [Accepted: 04/07/2011] [Indexed: 11/30/2022]
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Kwon YJ, Wang F, Liu CZ. Deep-bed solid state fermentation of sweet sorghum stalk to ethanol by thermotolerant Issatchenkia orientalis IPE 100. BIORESOURCE TECHNOLOGY 2011; 102:11262-11265. [PMID: 22014707 DOI: 10.1016/j.biortech.2011.09.103] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 09/01/2011] [Accepted: 09/24/2011] [Indexed: 05/31/2023]
Abstract
A solid state fermentation (SSF) of sweet sorghum stalk to ethanol was conducted in 250-mL flask using thermotolerant Issatchenkia orientalis IPE 100, and the optimal operation parameters were determined as 42°C fermentation temperature, 75% (w/w) water content, 2mm particle size and 3% (w/w) inoculation rate in 250-mL conical flask. When the SSF was scaled up from the flask to a 10-L bioreactor, temperature gradient in the substrate bed was observed due to heat accumulation in the bioreactor. The temperature gradient was dependent on both substrate depth and operation temperature. Due to high thermotolerance of the strain IPE 100, a deep-bed SSF of sweet sorghum stalk was developed in the bioreactor. The highest ethanol yield of 0.25 g-ethanol/g-dry stalk was obtained at 37°C with 15-20 cm substrate depth in the bioreactor. These results provided a great potential for large-scale deep-bed SSF in practice.
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Affiliation(s)
- Yong-Jin Kwon
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
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Keratinase production by Bacillus pumilus GHD in solid-state fermentation using sugar cane bagasse: optimisation of culture conditions using a Box-Behnken experimental design. ANN MICROBIOL 2011. [DOI: 10.1007/s13213-010-0187-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Rodgers CJ, Blanford CF, Giddens SR, Skamnioti P, Armstrong FA, Gurr SJ. Designer laccases: a vogue for high-potential fungal enzymes? Trends Biotechnol 2010; 28:63-72. [DOI: 10.1016/j.tibtech.2009.11.001] [Citation(s) in RCA: 180] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 10/29/2009] [Accepted: 11/05/2009] [Indexed: 10/20/2022]
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Mirón J, Vázquez JA, González P, Murado MA. Enhancement glucose oxidase production by solid-state fermentation of Aspergillus niger on polyurethane foams using mussel processing wastewaters. Enzyme Microb Technol 2010. [DOI: 10.1016/j.enzmictec.2009.07.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yu Z, Dong B, Lu W. Dynamics of bacterial community in solid-state fermented feed revealed by 16S rRNA. Lett Appl Microbiol 2009; 49:166-72. [DOI: 10.1111/j.1472-765x.2009.02636.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
The ability of Aspergillus oryzae for the production of tannase by solid state fermentation was investigated using cashew apple bagasse (CAB) as substrate. The effect of initial water content was studied and maximum enzyme production was obtained when 60 mL of water was added to 100.0 g of CAB. The fungal strain was able to grow on CAB without any supplementation but a low enzyme activity was obtained, 0.576 U/g of dry substrate (g(ds)). Optimization of process parameters such as supplementation with tannic acid, phosphorous, and different organic and inorganic nitrogen sources was studied. The addition of tannic acid affected the enzyme production and maximum tannase activity (2.40 U/g(ds)) was obtained with 2.5% (w/w) supplementation. Supplementation with ammonium nitrate, peptone, and yeast extract exerted no influence on tannase production. Ammonium sulphate improved the enzyme production in 3.75-fold compared with control. Based on the experimental results, CAB is a promising substrate for solid state fermentation, enabling A. oryzae growth and the production of tannase, with a maximum activity of 3.42 U/g(ds) and enzyme productivity of 128.5x10(-3) U x g(ds)(-1) x h(-1).
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Bhatnagar A, Kumar S, Gomes J. Operating conditions of a 200l staged vertical reactor for bioconversion of wheat straw by Phanerochaete chrysosporium. BIORESOURCE TECHNOLOGY 2008; 99:6917-6927. [PMID: 18313918 DOI: 10.1016/j.biortech.2008.01.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2007] [Revised: 01/14/2008] [Accepted: 01/16/2008] [Indexed: 05/26/2023]
Abstract
Bioconversion of wheat straw using Phanerochaete chrysosporium was carried out in a 200l staged vertical reactor. The bioconversion process was characterized by measuring the percentage degradation of lignin and cellulose, and increment in crude protein content. The effect of airflow rate, inoculum amount and wheat straw loading on bioconversion was investigated using a statistical experimental design. An analysis of variance was performed to determine response surfaces. The quality of bioconversion indicated by an optimization index called the desirability coefficient had the highest value of 0.75 for the fifth day of cultivation. This corresponded to an operating condition of 1.5kg wheat straw per stage using an inoculum amount of 0.38g (100g dry wheat straw)(-1) and an airflow rate of 15lmin(-1). The lignin and cellulose degradation achieved at this operating condition was 27% and 29%, respectively. A ratio of 3 for the weight of wheat straw to inoculum amount gave the highest crude protein of 5.9% on dry weight basis. Among the variables investigated, the airflow rate exhibited a significant effect on the quality of bioconversion. Our results indicate that the quality of bioconversion may be controlled by implementing a predetermined airflow rate schedule.
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Affiliation(s)
- Ankur Bhatnagar
- Biocon Ltd., 20th KM, Hosur Road, Electronics City, Bangalore 560 100, India
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Performance evaluation of reactors designed for bioconversion of wheat straw to animal feed. Anim Feed Sci Technol 2008. [DOI: 10.1016/j.anifeedsci.2007.09.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Graminha E, Gonçalves A, Pirota R, Balsalobre M, Da Silva R, Gomes E. Enzyme production by solid-state fermentation: Application to animal nutrition. Anim Feed Sci Technol 2008. [DOI: 10.1016/j.anifeedsci.2007.09.029] [Citation(s) in RCA: 133] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Couto SR, Toca-Herrera JL. Laccase production at reactor scale by filamentous fungi. Biotechnol Adv 2007; 25:558-69. [PMID: 17706395 DOI: 10.1016/j.biotechadv.2007.07.002] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Revised: 07/05/2007] [Accepted: 07/11/2007] [Indexed: 11/26/2022]
Abstract
Laccases have received much attention from researchers during the past decades due to their broad substrate specificity and to the fact that they use molecular oxygen as the final electron acceptor instead of hydrogen peroxide as used by peroxidases. This makes laccases highly interesting for a wide variety of processes, such as textile dye decolouration, pulp bleaching, effluent detoxification, biosensors and bioremediation. The successful application of laccases to the above-mentioned processes requires the production of large quantities of enzyme at low cost. Filamentous fungi are able to produce laccases in high amounts, however, an efficient production system at bioreactor scale is still lacking. This is mainly due to the fact that laccase production by wild-type strains of filamentous fungi is linked to secondary metabolism, which implies that the following drawbacks must be overcome: uncontrolled fungal growth, the formation of polysaccharides around mycelia and the secretion of certain compounds (i.e. proteases) that inactivate laccases. This review summarizes the current status of laccase production by wild-type strains of filamentous fungi at the bioreactor scale.
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Affiliation(s)
- Susana Rodríguez Couto
- Department of Chemical Engineering, Rovira i Virgili University, Av. Països Catalans 26, 43007 Tarragona, Spain.
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Mazutti M, Ceni G, Di Luccio M, Treichel H. Production of inulinase by solid-state fermentation: effect of process parameters on production and preliminary characterization of enzyme preparations. Bioprocess Biosyst Eng 2007; 30:297-304. [PMID: 17659392 DOI: 10.1007/s00449-006-0096-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2006] [Accepted: 10/18/2006] [Indexed: 11/30/2022]
Abstract
This work was aimed at producing inulinase by solid-state fermentation of sugarcane bagasse, using factorial design to identify the effect of corn steep liquor (CSL) and soybean bran concentration, particle size of bagasse and size of inoculum. Maximum inulinase activity achieved was 250 U per g of dry substrate (gds) at 20% (w/w) of CSL, 5% (w/w) of soybean bran, 1 x 10(10) cells mL(-1) and particle size of bagasse in the range 9/32 mesh. The use of soybean bran decreased the time to reach maximum activity from 96 to 24 h and the maximum productivity achieved was 8.87 U gds(-1) h(-1). The maximum activity was obtained at pH 5.0 and 55.0 degrees C. Within the investigated range, the enzyme extract was more thermostable at 50.0 degrees C, showing a D-value of 123.1 h and deactivation energy of 343.9 kJ gmol(-1). The extract showed highest stability from pH 4.5 to 4.8. Apparent K(m) and V(max) are 7.1 mM and 17.79 M min(-1), respectively.
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Affiliation(s)
- Marcio Mazutti
- Department of Food Engineering, Universidade Regional Integrada do Alto Uruguai e das Missões Campus de Erechim, Av. Sete de Setembro 1621, Erechim, RS, 99700-000, Brazil
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