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Bioconversion of agricultural waste hydrolysate from lignocellulolytic mold into biosurfactant by Achromobacter sp. BP(1)5. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101534] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Pinar O, Karaosmanoğlu K, Sayar NA, Kula C, Kazan D, Sayar AA. Assessment of hazelnut husk as a lignocellulosic feedstock for the production of fermentable sugars and lignocellulolytic enzymes. 3 Biotech 2017; 7:367. [PMID: 29062677 DOI: 10.1007/s13205-017-1002-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 09/26/2017] [Indexed: 12/22/2022] Open
Abstract
The present work focuses firstly on the evaluation of the effect of laccase on enzymatic hydrolysis of hazelnut husk which is one of the most abundant lignocellulosic agricultural residues generated in Turkey. In this respect, the co-enzymatic treatment of hazelnut husk by cellulase and laccase, without a conventional pretreatment step is evaluated. Using 2.75 FPU/g substrate (40 g/L substrate) and a ratio of 131 laccase U/FPU achieved the highest reducing sugars concentration. Gas chromatography mass spectrometry confirmed that the hydrolysate was composed of glucose, xylose, mannose, arabinose and galactose. The inclusion of laccase in the enzyme mixture [carboxymethyl cellulase (CMCase) and β-glucosidase] increased the final glucose content of the reducing sugars from 20 to 50%. Therefore, a very significant increase in glucose content of the final reducing sugars concentration was obtained by laccase addition. Furthermore, the production of cellulases and laccase by Pycnoporus sanguineus DSM 3024 using hazelnut husk as substrate was also investigated. Among the hazelnut husk concentrations tested (1.5, 6, 12, 18 g/L), the highest CMCase concentration was obtained using 12 g/L husk concentration on the 10th day of fermentation. Besides CMCase, P. sanguineus DSM 3024 produced β-glucosidase and laccase using hazelnut husk as carbon source. In addition to CMCase and β-glucosidase, the highest laccase activity measured was 2240 ± 98 U/L (8.89 ± 0.39 U/mg). To the best of our knowledge, this is the first study to report hazelnut husk hydrolysis in the absence of pretreatment procedures.
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Affiliation(s)
- Orkun Pinar
- Department of Bioengineering, Faculty of Engineering, Marmara University, Göztepe Campus, Kadıköy, 34722 Istanbul, Turkey
| | - Kübra Karaosmanoğlu
- Department of Bioengineering, Faculty of Engineering, Marmara University, Göztepe Campus, Kadıköy, 34722 Istanbul, Turkey
| | - Nihat Alpagu Sayar
- Department of Bioengineering, Faculty of Engineering, Marmara University, Göztepe Campus, Kadıköy, 34722 Istanbul, Turkey
| | - Ceyda Kula
- Department of Bioengineering, Faculty of Engineering, Marmara University, Göztepe Campus, Kadıköy, 34722 Istanbul, Turkey
| | - Dilek Kazan
- Department of Bioengineering, Faculty of Engineering, Marmara University, Göztepe Campus, Kadıköy, 34722 Istanbul, Turkey
| | - Ahmet Alp Sayar
- Department of Bioengineering, Faculty of Engineering, Marmara University, Göztepe Campus, Kadıköy, 34722 Istanbul, Turkey
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Pathania S, Sharma N, Handa S. Immobilization of co-culture of Saccharomyces cerevisiae and Scheffersomyces stipitis in sodium alginate for bioethanol production using hydrolysate of apple pomace under separate hydrolysis and fermentation. BIOCATAL BIOTRANSFOR 2017. [DOI: 10.1080/10242422.2017.1368497] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Shruti Pathania
- Division of Microbiology, Department of Basic Sciences, Dr Y S Parmar University of Horticulture and Forestry, Solan, HP, India
| | - Nivedita Sharma
- Division of Microbiology, Department of Basic Sciences, Dr Y S Parmar University of Horticulture and Forestry, Solan, HP, India
| | - Shweta Handa
- Division of Microbiology, Department of Basic Sciences, Dr Y S Parmar University of Horticulture and Forestry, Solan, HP, India
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Evaluation of natural materials as exogenous carbon sources for biological treatment of low carbon-to-nitrogen wastewater. BIOMED RESEARCH INTERNATIONAL 2015; 2015:754785. [PMID: 26495313 PMCID: PMC4606129 DOI: 10.1155/2015/754785] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/19/2015] [Accepted: 03/30/2015] [Indexed: 11/17/2022]
Abstract
In the bacterial processes involved in the mitigation of nitrogen pollution, an adequately high carbon-to-nitrogen (C : N) ratio is key to sustain denitrification. We evaluated three natural materials (woodchips, barley grains, and peanut shells) as carbon sources for low C : N wastewater. The amount of organic matter released from these materials to aqueous media was evaluated, as well as their pollution swapping potential by measuring the release of total Kjeldahl nitrogen, N-NH4 (+), NO2 (-), and NO3 (-), and total phosphorous. Barley grains yielded the highest amount of organic matter, which also showed to be the most easily biodegradable. Woodchips and peanut shells released carbon rather steadily and so they would not require frequent replenishment from biological reactors. These materials produced eluates with lower concentrations of nutrients than the leachates from barley grains. However, as woodchips yielded lower amounts of suspended solids, they constitute an adequate exogenous source for the biological treatment of carbon-deficient effluents.
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Ouédraogo IWK, Pehlivan E, Tran HT, Bonzi-Coulibaly YL, Zachmann D, Bahadir M. Synthesis of iron oxyhydroxide-coated rice straw (IOC-RS) and its application in arsenic(V) removal from water. JOURNAL OF WATER AND HEALTH 2015; 13:726-736. [PMID: 26322758 DOI: 10.2166/wh.2015.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Because of the recognition that arsenic (As) at low concentrations in drinking water causes severe health effects, the technologies of As removal have become increasingly important. In this study, a simplified and effective method was used to immobilize iron oxyhydroxide onto a pretreated naturally occurring rice straw (RS). The modified RS adsorbent was characterized, using scanning electron microscope, Fourier transform infrared spectroscopy, thermogravimetric analyzer, and surface area analyzer. Experimental batch data of As(V) adsorption were modeled by the isotherms and kinetics models. Although all isotherms, the Langmuir model fitted the equilibrium data better than Freundlich and Dubinin-Radushkevich models and confirmed the surface homogeneity of adsorbent. The iron oxyhydroxide-coated rice straw (IOC-RS) was found to be effective for the removal of As(V) with 98.5% sorption efficiency at a concentration of <50 mg/L of As(V) solution, and thus maximum uptake capacity is ∼22 and 20 mg As(V)/g of IOC-RS at pH 4 and 6, respectively. The present study might provide new avenues to achieve the As concentrations required for drinking water recommended by the World Health Organization.
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Affiliation(s)
- Igor W K Ouédraogo
- Laboratoire de Chimie Analytique, Environnementale et Bio-Organique, UFR-SEA, Université de Ouagadougou, 03 BP 7021 Ouagadougou 03, Burkina Faso E-mail: ; Institute of Ecological Chemistry and Waste Analysis, Technical University of Braunschweig, Hagenring 30, Braunschweig 38106, Germany; Biomass Energy and Biofuels Laboratory (LBEB), International Institute for Water and Environmental Engineering (2iE Foundation), Ouagadougou 01 01 BP 594, Burkina Faso
| | - Erol Pehlivan
- Department of Chemical Engineering, Selcuk University, Campus, 42031 Konya, Turkey; Institute of Ecological Chemistry and Waste Analysis, Technical University of Braunschweig, Hagenring 30, Braunschweig 38106, Germany
| | - Hien T Tran
- Hanoi University of Science, Hanoi, Vietnam; Institute of Ecological Chemistry and Waste Analysis, Technical University of Braunschweig, Hagenring 30, Braunschweig 38106, Germany
| | - Yvonne L Bonzi-Coulibaly
- Laboratoire de Chimie Analytique, Environnementale et Bio-Organique, UFR-SEA, Université de Ouagadougou, 03 BP 7021 Ouagadougou 03, Burkina Faso E-mail:
| | - Dieter Zachmann
- Institute of Ecological Chemistry and Waste Analysis, Technical University of Braunschweig, Hagenring 30, Braunschweig 38106, Germany
| | - Müfit Bahadir
- Institute of Ecological Chemistry and Waste Analysis, Technical University of Braunschweig, Hagenring 30, Braunschweig 38106, Germany
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