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Lin Y, Dong Y, Li X, Cai J, Cai L, Zhang G. Enzymatic production of xylooligosaccharide from lignocellulosic and marine biomass: A review of current progress, challenges, and its applications in food sectors. Int J Biol Macromol 2024; 277:134014. [PMID: 39047995 DOI: 10.1016/j.ijbiomac.2024.134014] [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: 09/18/2023] [Revised: 04/03/2024] [Accepted: 07/17/2024] [Indexed: 07/27/2024]
Abstract
Over the last decade, xylooligosaccharides (XOS) have attracted great attentions because of their unique chemical properties and excellent prebiotic effects. Among the current strategies for XOS production, enzymatic hydrolysis is preferred due to its green and safe process, simplicity in equipment, and high control of the degrees of polymerization. This paper comprehensively summarizes various lignocellulosic biomass and marine biomass employed in enzymatic production of XOS. The importance and advantages of enzyme immobilization in XOS production are also discussed. Many novel immobilization techniques for xylanase are presented. In addition, bioinformatics techniques for the mining and designing of new xylanase are also described. Moreover, XOS has exhibited great potential applications in the food industry as diverse roles, such as a sugar replacer, a fat replacer, and cryoprotectant. This review systematically summarizes the current research progress on the applications of XOS in food sectors, including beverages, bakery products, dairy products, meat products, aquatic products, food packaging film, wall materials, and others. It is anticipated that this paper will act as a reference for the further development and application of XOS in food sectors and other fields.
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Affiliation(s)
- Yuanqing Lin
- College of Environment and Public Health, Xiamen Huaxia University, Xiamen 361024, Fujian, China
| | - Yuting Dong
- College of Environment and Public Health, Xiamen Huaxia University, Xiamen 361024, Fujian, China; Department of Bioengineering and Biotechnology, Huaqiao University, Xiamen 361021, Fujian, China
| | - Xiangling Li
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, United States
| | - Jinzhong Cai
- College of Environment and Public Health, Xiamen Huaxia University, Xiamen 361024, Fujian, China
| | - Lixi Cai
- Department of Bioengineering and Biotechnology, Huaqiao University, Xiamen 361021, Fujian, China; College of Basic Medicine, Putian University, Putian 351100, Fujian, China.
| | - Guangya Zhang
- Department of Bioengineering and Biotechnology, Huaqiao University, Xiamen 361021, Fujian, China.
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Nongkhai SN, Piemthongkham P, Bankeeree W, Punnapayak H, Lotrakul P, Prasongsuk S. Xylooligosaccharides produced from sugarcane leaf arabinoxylan using xylanase from Aureobasidium pullulans NRRL 58523 and its prebiotic activity toward Lactobacillus spp. Heliyon 2023; 9:e22107. [PMID: 38034795 PMCID: PMC10682688 DOI: 10.1016/j.heliyon.2023.e22107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 09/07/2023] [Accepted: 11/04/2023] [Indexed: 12/02/2023] Open
Abstract
In an attempt to enhance the value of sugarcane leaf, xylan was extracted and used for xylooligosaccharide (XO) production via enzymatic hydrolysis using xylanase from the black yeast Aureobasidium pullulans. The xylan was extracted from sugarcane leaf using alkali extraction according to the response surface methodology. The highest xylan yield (99.42 ± 4.05 % recovery) was obtained using 14.32 % (w/v) NaOH, 13.25:1 liquid: solid ratio, at 121 °C and 15 lb.in2 for 32 min. Sugar composition and FTIR spectrum analyses confirmed its structure as arabinoxylan. The extracted arabinoxylan had a relatively high molecular weight compared to previous studies. Crude endoxylanase from A. pullulans NRRL 58523 was selected for enzymatic hydrolysis of the xylan. The enzyme hydrolyzed well at 50 °C, pH 4.0 and was relatively stable under this condition (87.38 ± 1.26 % of the activity remained after 60 h). XOs, especially xylobiose and xylotriose, were obtained at the maximum yield of 237.51 ± 17.69 mg/g xylan via endoxylanase hydrolysis under the optimum conditions (50 °C, pH 4.0, 65.31 U/g xylan, 53 h). XOs exhibited species-specific prebiotic activity toward three strains of Lactobacillus spp. but not toward Bifidobacterium spp.
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Affiliation(s)
- Sorawit Na Nongkhai
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Phitchayakon Piemthongkham
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Wichanee Bankeeree
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Hunsa Punnapayak
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Biology, Faculty Science and Technology, Airlangga University, Surabaya 60115, Indonesia
| | - Pongtharin Lotrakul
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sehanat Prasongsuk
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Biology, Faculty Science and Technology, Airlangga University, Surabaya 60115, Indonesia
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Ibrahim SNMM, Bankeeree W, Prasongsuk S, Punnapayak H, Lotrakul P. Production and characterization of thermostable acidophilic β-mannanase from Aureobasidium pullulans NRRL 58524 and its potential in mannooligosaccharide production from spent coffee ground galactomannan. 3 Biotech 2022; 12:237. [PMID: 36003897 PMCID: PMC9393121 DOI: 10.1007/s13205-022-03301-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 08/10/2022] [Indexed: 11/24/2022] Open
Abstract
The maximum yield of the crude mannanase from Aureobasidium pullulans NRRL 58524 was 8.42 ± 0.18 U mL-1 when cultured for 72 h in the optimized medium containing 3% (w v-1) defatted spent coffee grounds (SCG) and 0.67% (w v-1) ammonium sulphate. Two forms of mannanase were observed in the crude enzyme and the principal mannanase was enriched to apparent homogeneity via sequential filtration and anion exchange chromatography. The molecular mass of the enzyme was approximately 63 kDa as determined by SDS-PAGE. The enriched mannanase was active at high temperatures (45-75 °C) and a pH range from 3 to 6 with the maximum activity at 55 °C and pH 4.0. The enzyme was relatively thermostable with more than 75% of its initial activity remained after a 12 h incubation at 55 °C. The half-lives of the enriched mannanase were over 8 and 6 h at 60 and 65 °C, respectively. The enzyme was not adversely affected by chelator and most ions tested. This enzyme could hydrolyze both glucomannan and galactomannan and exhibited limited catalytic activity on beta-glucan. When the crude mannanase was used to hydrolyze galactomannan extracted from SCG, the maximum yield of reducing sugars mainly comprising of mannobiose (16.27 ± 0.84 mg 100 mg-1), and mannotriose (2.85 ± 0.20 mg 100 mg-1) was obtained at 58.22 ± 2.04 mg 100 mg-1 dry weight, under optimized condition (84.87 U g-1 mannanase, 41 h 34 min incubation at 55 °C and pH 4.0). These results suggested the prospect of the enzyme in mannan hydrolysis and mannooligosaccharide production at a larger scale. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-022-03301-4.
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Affiliation(s)
- Syahriar Nur Maulana Malik Ibrahim
- Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Wichanee Bankeeree
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Sehanat Prasongsuk
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya, 60115 Indonesia
| | - Hunsa Punnapayak
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Surabaya, 60115 Indonesia
| | - Pongtharin Lotrakul
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330 Thailand
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Liu J, Liu C, Qiao S, Dong Z, Sun D, Zhu J, Liu W. One-step fermentation for producing xylo-oligosaccharides from wheat bran by recombinant Escherichia coli containing an alkaline xylanase. BMC Biotechnol 2022; 22:6. [PMID: 35123477 PMCID: PMC8817556 DOI: 10.1186/s12896-022-00736-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 01/28/2022] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND One-step fermentation is a cheap way to produce xylo-oligosaccharides (XOS), where production of xylanases and XOS is integrated into a single process. In spite of cost advantage, one-step fermentation is still short in yield so far due to the limited exploration. To cope with this issue, production of XOS from wheat bran by recombinant Escherichia coli through one-step fermentation was investigated in this study. RESULTS An endo-β-1,4-xylanase gene belonging to glycoside hydrolase family 11 of Bacillus agaradhaerens was employed to construct recombinant E. coli. This xylanase showed maximal activity at 60 °C and pH 8.0-8.5. Its activity retained more than 60% after incubation at 70 °C for 4 h, showing a good stability. The recombinant E. coli BL21(DE3) could secreted xylanases that directly hydrolyzed de-starched wheat bran to XOS in fermentation medium. The XOS generated from hydrolysis consisted of xylose, xylobiose and xylotriose accounting for 23.1%, 37.3% and 39.6%, respectively. Wheat bran concentration was found to be the most crucial factor affecting XOS production. The XOS concentration reached 5.3 mg/mL at 10% loading of wheat bran, which is higher than those of previous researches. Nitrogen source type could also affect production of XOS by changing extracellular xylanase activity, and glycine was found to be the best one for fermentation. Optimal fermentation conditions were finally studied using response surface optimization. The maximal concentration emerged at 44.3 °C, pH 7.98, which is affected by characteristics of the xylanase as well as growth conditions of E. coli. CONCLUSIONS This work indicates that the integrated fermentation using recombinant E. coli is highly competitive in cost and final concentration for producing XOS. Results can also provide theoretical basis for large-scale production and contribute to the wide adoption of XOS.
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Affiliation(s)
- Jiawen Liu
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou, 221116 Jiangsu Province China
| | - Cong Liu
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou, 221116 Jiangsu Province China
| | - Shilei Qiao
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou, 221116 Jiangsu Province China
| | - Zhen Dong
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou, 221116 Jiangsu Province China
| | - Di Sun
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou, 221116 Jiangsu Province China
| | - Jingrong Zhu
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou, 221116 Jiangsu Province China
| | - Weijie Liu
- Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Science, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou, 221116 Jiangsu Province China
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Bankeeree W, Prasongsuk S, Lotrakul P, Abd‐Aziz S, Punnapayak H. Enzymes for Hemicellulose Degradation. BIOREFINERY OF OIL PRODUCING PLANTS FOR VALUE‐ADDED PRODUCTS 2022:199-220. [DOI: 10.1002/9783527830756.ch11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Rajan K, D’Souza DH, Kim K, Choi JM, Elder T, Carrier DJ, Labbé N. Production and Characterization of High Value Prebiotics From Biorefinery-Relevant Feedstocks. Front Microbiol 2021; 12:675314. [PMID: 33995339 PMCID: PMC8116503 DOI: 10.3389/fmicb.2021.675314] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/06/2021] [Indexed: 11/24/2022] Open
Abstract
Hemicellulose, a structural polysaccharide and often underutilized co-product stream of biorefineries, could be used to produce prebiotic ingredients with novel functionalities. Since hot water pre-extraction is a cost-effective strategy for integrated biorefineries to partially fractionate hemicellulose and improve feedstock quality and performance for downstream operations, the approach was applied to process switchgrass (SG), hybrid poplar (HP), and southern pine (SP) biomass at 160°C for 60 min. As a result, different hemicellulose-rich fractions were generated and the chemical characterization studies showed that they were composed of 76-91% of glucan, xylan, galactan, arabinan, and mannan oligosaccharides. The hot water extracts also contained minor concentrations of monomeric sugars (≤18%), phenolic components (≤1%), and other degradation products (≤3%), but were tested for probiotic activity without any purification. When subjected to batch fermentations by individual cultures of Lactobacillus casei, Bifidobacterium bifidum, and Bacteroides fragilis, the hemicellulosic hydrolysates elicited varied responses. SG hydrolysates induced the highest cell count in L. casei at 8.6 log10 cells/ml, whereas the highest cell counts for B. fragilis and B. bifidum were obtained with southern pine (5.8 log10 cells/ml) and HP hydrolysates (6.4 log10 cells/ml), respectively. The observed differences were attributed to the preferential consumption of mannooligosaccharides in SP hydrolysates by B. fragilis. Lactobacillus casei preferentially consumed xylooligosaccharides in the switchgrass and southern pine hydrolysates, whereas B. bifidum consumed galactose in the hybrid poplar hydrolysates. Thus, this study (1) reveals the potential to produce prebiotic ingredients from biorefinery-relevant lignocellulosic biomass, and (2) demonstrates how the chemical composition of hemicellulose-derived sources could regulate the viability and selective proliferation of probiotic microorganisms.
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Affiliation(s)
- Kalavathy Rajan
- Center for Renewable Carbon, The University of Tennessee Institute of Agriculture, Knoxville, TN, United States
| | - Doris H. D’Souza
- Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, TN, United States
| | - Keonhee Kim
- Center for Renewable Carbon, The University of Tennessee Institute of Agriculture, Knoxville, TN, United States
| | - Joseph Moon Choi
- Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, TN, United States
| | - Thomas Elder
- USDA-Forest Service, Southern Research Station, Auburn, AL, United States
| | - Danielle Julie Carrier
- Department of Biosystems Engineering and Soil Science, The University of Tennessee Institute of Agriculture, Knoxville, TN, United States
| | - Nicole Labbé
- Center for Renewable Carbon, The University of Tennessee Institute of Agriculture, Knoxville, TN, United States
- Department of Forestry, Wildlife and Fisheries, The University of Tennessee Institute of Agriculture, Knoxville, TN, United States
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Seekram P, Thammasittirong A, Thammasittirong SNR. Evaluation of spent mushroom substrate after cultivation of Pleurotus ostreatus as a new raw material for xylooligosaccharides production using crude xylanases from Aspergillus flavus KUB2. 3 Biotech 2021; 11:176. [PMID: 33927967 PMCID: PMC7979848 DOI: 10.1007/s13205-021-02725-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 03/10/2021] [Indexed: 10/21/2022] Open
Abstract
Xylooligosaccharides (XOS), a novel functional food and feed ingredient, can be produced from lignocellulosic biomass. In this study, spent mushroom substrate (SMS) gathered after Pleurotus ostreatus cultivation was investigated for its potential as a new raw material for XOS production using crude xylanases produced in-house from Aspergillus flavus KUB2. Xylan was extracted from SMS using the alkaline extraction method. The highest true recovery of xylan (20.76%) and the relative recovery of xylan (83.73%) were obtained from SMS extracted with 4 M NaOH. Enzymatic hydrolysis of SMS-extracted xylan using crude fungal xylanases from A. flavus KUB2 produced a maximum total XOS in the range 1.37-1.48 mg/ml, which was mainly composed of XOS with a low degree of polymerization (xylobiose and xylotriose). XOS derived from SMS-extracted xylan positively influenced the growth of probiotic bacteria, suggesting the prebiotic nature of XOS. The results indicated that XOS with prebiotic properties can be produced from SMS xylan using crude xylanases without any purification, which offers economic potential for food and feed applications.
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Affiliation(s)
- Preeyaporn Seekram
- Department of Microbiology, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom, 73140 Thailand
| | - Anon Thammasittirong
- Department of Microbiology, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom, 73140 Thailand
- Microbial Biotechnology Unit, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom, 73140 Thailand
| | - Sutticha Na-Ranong Thammasittirong
- Department of Microbiology, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom, 73140 Thailand
- Microbial Biotechnology Unit, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom, 73140 Thailand
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Buntasana S, Seankongsuk P, Vilaivan T, Padungros P. Household Ozone Disinfector as An Alternative Ozone Generator for Ozonolysis of Alkenes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Supanat Buntasana
- Green Chemistry for Fine Chemical Productions STAR Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Pattarakiat Seankongsuk
- Organic Synthesis Research Unit Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
| | - Panuwat Padungros
- Green Chemistry for Fine Chemical Productions STAR Department of Chemistry Faculty of Science Chulalongkorn University Phayathai Road, Pathumwan Bangkok 10330 Thailand
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Monica P, Kapoor M. Alkali-stable GH11 endo-β-1,4 xylanase (XynB) from Bacillus subtilis strain CAM 21: application in hydrolysis of agro-industrial wastes, fruit/vegetable peels and weeds. Prep Biochem Biotechnol 2020; 51:475-487. [PMID: 33043796 DOI: 10.1080/10826068.2020.1830416] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
GH11 endo-xylanases, due to their inherent structural and biochemical properties, are the key to efficient bioconversion of lignocellulosic biomass into value-added products. A GH11 endo-xylanase (XynB) from Bacillus subtilis strain CAM 21 was cloned, over-expressed and purified (Mw∼24 kDa) using Ni-NTA affinity chromatography. XynB showed optimum activity at pH 7.0 and 50°C and was stable (>88%) in a broad range of pH (4-11). The apparent Km, Kcat and Kcat/Km of XynB were 2.9 mg/ml, 1961.2/sec, and 675.62 ml/mg/sec, respectively using birchwood xylan as substrate. XynB was a classical endo-xylanase as it hydrolyzed birchwood xylan to xylo-oligosaccharides and not xylose. Kinetic stability of XynB at 45-53°C was between 43-182 min. Secondary structure analysis of XynB using far-UV CD spectroscopy revealed presence of 51.85% β strands and 2.64% α helix and was consistent with the homology modeling studies. XynB hydrolyzed the xylan extracted from agro-industrial wastes and fruit/vegetable peels by releasing up to 670 mg/g of reducing sugars. The xylan extracted from weeds (Ageratum conyzoides, Achyranthes aspera and Tridax procumbens) had characteristic signatures of hemicelluloses and after XynB hydrolysis showed cracks, peeling and release of up to 135.2 mg/g reducing sugars.
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Affiliation(s)
- P Monica
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR - Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad, India
| | - Mukesh Kapoor
- Department of Protein Chemistry and Technology, CSIR-Central Food Technological Research Institute, Mysuru, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR - Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad, India
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Su Z, Luo J, Li X, Pinelo M. Enzyme membrane reactors for production of oligosaccharides: A review on the interdependence between enzyme reaction and membrane separation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116840] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Efficient Enzymatic Hydrolysis of Biomass Hemicellulose in the Absence of Bulk Water. Molecules 2019; 24:molecules24234206. [PMID: 31756935 PMCID: PMC6930478 DOI: 10.3390/molecules24234206] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 01/20/2023] Open
Abstract
Current enzymatic methods for hemicellulosic biomass depolymerization are solution-based, typically require a harsh chemical pre-treatment of the material and large volumes of water, yet lack in efficiency. In our study, xylanase (E.C. 3.2.1.8) from Thermomyces lanuginosus is used to hydrolyze xylans from different sources. We report an innovative enzymatic process which avoids the use of bulk aqueous, organic or inorganic solvent, and enables hydrolysis of hemicellulose directly from chemically untreated biomass, to low-weight, soluble oligoxylosaccharides in >70% yields.
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