1
|
Yağcı S, Sutay Kocabaş D, Çalışkan R, Özbek HN. Statistical investigation of the bioprocess conditions of alkali combined twin-screw extrusion pretreatment to enhance fractionation and enzymatic hydrolysis of bulgur bran. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:4770-4779. [PMID: 35218014 DOI: 10.1002/jsfa.11837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/22/2022] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Bulgur bran (BB) is a potential source for the production of value-added products such as fermentable sugars and xylooligosaccharides (XOs). In this study, alkali combined twin-screw extrusion pretreatment was performed and statistically optimized to enhance fractionation and enzymatic hydrolysis of BB. The pretreatment conditions (barrel temperature, screw speed and alkali impregnation) were optimized by Box-Behnken design (BBD) to obtain the highest hemicellulose separation from BB. The obtained fractions were analyzed for the production of fermentable sugars and XOs. RESULTS The results revealed that twin-screw extrusion of BB performed at 67 °C barrel temperature and 250 rpm screw speed after alkali impregnation at 0.02 g alkali g-1 biomass concentration provided 40.4% higher hemicellulose separation yield compared to the untreated BB. Alkali combined twin-screw extrusion pretreatment increased the enzymatic hydrolysis yield of BB fourfold, whereas a 13-fold increase was achieved after the separation of hemicellulose from pretreated BB. Xylose (X1)-free xylobiose (X2) was the main product after xylanase hydrolysis of hemicellulose fraction. SEM images confirmed the morphological modifications in BB, which were in agreement with the enhanced fractionation performance and the higher enzymatic hydrolysis yield. CONCLUSION The results of this study suggested that pretreatment by alkali combined twin-screw extrusion followed by alkali extraction could be a reliable and effective process for fractionation of BB and production of fermentable sugars and XOs. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Sibel Yağcı
- Department of Food Engineering, Balıkesir University, Balıkesir, Turkey
| | - Didem Sutay Kocabaş
- Department of Food Engineering, Karamanoğlu Mehmetbey University, Karaman, Turkey
| | - Rukiye Çalışkan
- Department of Food Engineering, Karamanoğlu Mehmetbey University, Karaman, Turkey
| | - Hatice Neval Özbek
- Department of Food Engineering, University of Gaziantep, Gaziantep, Turkey
| |
Collapse
|
2
|
Treichel H, Fongaro G, Scapini T, Frumi Camargo A, Spitza Stefanski F, Venturin B. Waste Biomass Pretreatment Methods. UTILISING BIOMASS IN BIOTECHNOLOGY 2020. [DOI: 10.1007/978-3-030-22853-8_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
3
|
Xue Z, Ma Q, Guo Q, Santhanam RK, Gao X, Chen Z, Wang C, Chen H. Physicochemical and functional properties of extruded dietary fiber from mushroom Lentinula edodes residues. FOOD BIOSCI 2019. [DOI: 10.1016/j.fbio.2019.100452] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
4
|
Lara-Flores AA, Araújo RG, Rodríguez-Jasso RM, Aguedo M, Aguilar CN, Trajano HL, Ruiz HA. Bioeconomy and Biorefinery: Valorization of Hemicellulose from Lignocellulosic Biomass and Potential Use of Avocado Residues as a Promising Resource of Bioproducts. ENERGY, ENVIRONMENT, AND SUSTAINABILITY 2018. [DOI: 10.1007/978-981-10-7431-8_8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
5
|
Yan Q, Wang Y, Rodiahwati W, Spiess A, Modigell M. Alkaline-assisted screw press pretreatment affecting enzymatic hydrolysis of wheat straw. Bioprocess Biosyst Eng 2016; 40:221-229. [PMID: 27761655 DOI: 10.1007/s00449-016-1689-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 09/27/2016] [Indexed: 10/20/2022]
Abstract
Screw press processing of biomass can be considered as a suitable mechanically based pretreatment for biofuel production since it disrupts the structure of lignocellulosic biomass with high shear and pressure forces. The combination with chemical treatment has been suggested to increase the conversion of lignocellulosic biomass to fermentable sugars. Within the study, the synergetic effect of alkaline (sodium hydroxide, NaOH) soaking and screw press pretreatment on wheat straw was evaluated based on, e.g., sugar recovery and energy efficiency. After alkaline soaking (at 0.1 M for 30 min) and sequential screw press pretreatment with various screw press configurations and modified screw barrel, the lignin content of pretreated wheat straw was quantified. In addition, the structure of pretreated wheat straw was investigated by scanning electron microscopy and measurement of specific surface area. It could be shown that removal of lignin is more important than increase of surface area of the biomass to reach a high sugar recovery. The rate constant of the enzymatic hydrolysis increased from 1.1 × 10-3 1/h for the non-treated material over 2.3 × 10-3 1/h for the alkaline-soaked material to 26.9 × 10-3 1/h for alkaline-assisted screw press pretreated material, indicating a nearly 25-fold improvement of the digestibility by the combined chemo-mechanical pretreatment. Finally, the screw configuration was found to be an important factor for improving the sugar recovery and for reducing the specific energy consumption of the screw press pretreatment.
Collapse
Affiliation(s)
- Qingqi Yan
- Aachener Verfahrenstechnik, Mechanical Process Engineering, RWTH Aachen University, Turmstr. 46, 52064, Aachen, Germany.
| | - Yumei Wang
- Aachener Verfahrenstechnik, Enzyme Process Technology, RWTH Aachen University, Worringer Weg 1, 52074, Aachen, Germany.,DWI Leibniz Institute for Interactive Materials Research, Forckenbeckstr. 50, 52074, Aachen, Germany
| | - Wawat Rodiahwati
- Department of Chemical and Process Engineering, Thai-German Graduate School of Engineering, King Mongkut's University of Technology, North Bangkok, Bangkok, 10800, Thailand
| | - Antje Spiess
- Aachener Verfahrenstechnik, Enzyme Process Technology, RWTH Aachen University, Worringer Weg 1, 52074, Aachen, Germany.,DWI Leibniz Institute for Interactive Materials Research, Forckenbeckstr. 50, 52074, Aachen, Germany.,Institute of Biochemical Engineering (IBVT), TU Braunschweig, Rebenring 56, 38106, Brunswick, Germany
| | - Michael Modigell
- Aachener Verfahrenstechnik, Mechanical Process Engineering, RWTH Aachen University, Turmstr. 46, 52064, Aachen, Germany
| |
Collapse
|