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Rodríguez-Sanz A, Fuciños C, Míguez M, Rúa ML, Torrado AM. Direct enzymatic hydrolysis of solid wheat straw with endo-xylanases: Effect of the temperature on the hemicellulose release and the product profile modulation. Int J Biol Macromol 2024; 270:132211. [PMID: 38723833 DOI: 10.1016/j.ijbiomac.2024.132211] [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: 11/29/2023] [Revised: 04/28/2024] [Accepted: 05/07/2024] [Indexed: 05/20/2024]
Abstract
Prebiotics are non-digestible compounds that promote intestinal microbiota growth and/or activity. Xylooligosaccharides (XOS) are new prebiotics derived from the hemicellulose fraction of lignocellulosic materials. Challenges in using those materials as sources for prebiotic compounds lie in the hemicellulose extraction efficiency and the safety of those ingredients. In this sense, this work aims to optimize hemicellulose extraction and XOS production through direct enzymatic hydrolysis of alkali pre-treated wheat straw without undesired byproducts. By increasing the temperature of the enzymatic step from 40 °C to 65 °C we achieved an improvement in the extraction yield from 55 % to 80 %. Products with different degrees of polymerization were also noticed: while XOS ≤ X6 where the main products at 40 °C, a mixture of long arabinoxylan derived polymers (ADPo) and XOS ≤ X6 was obtained at 65 °C, irrespective of the extraction yield. Thus, a modulatory effect of temperature on the product profile is suggested here. Among the XOS ≤ X6 produced, X2-X3 were the main products, and X4 was the minor one. At the end of the hydrolysis, 146.7 mg XOS per gram of pre-treated wheat straw were obtained.
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Affiliation(s)
- Andrea Rodríguez-Sanz
- Biochemistry Laboratory, Department of Analytical and Food Chemistry, University of Vigo, Ourense, Spain
| | - Clara Fuciños
- Biochemistry Laboratory, Department of Analytical and Food Chemistry, University of Vigo, Ourense, Spain
| | - Martín Míguez
- Biochemistry Laboratory, Department of Analytical and Food Chemistry, University of Vigo, Ourense, Spain
| | - María L Rúa
- Biochemistry Laboratory, Department of Analytical and Food Chemistry, University of Vigo, Ourense, Spain
| | - Ana M Torrado
- Biochemistry Laboratory, Department of Analytical and Food Chemistry, University of Vigo, Ourense, Spain.
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Ramos M, Laveriano E, San Sebastián L, Perez M, Jiménez A, Lamuela-Raventos RM, Garrigós MC, Queralt AV. Rice straw as a valuable source of cellulose and polyphenols: Applications in the food industry. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Patel A, Divecha J, Shah A. A sustainable process for co-production of xylooligosaccharides and ethanol from alkali treated sugarcane bagasse: A strategy towards waste management. Prep Biochem Biotechnol 2022:1-11. [PMID: 36129679 DOI: 10.1080/10826068.2022.2119575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Present study aims at sustainable utilization of sugarcane bagasse (SCB) for production of valuable prebiotic xylooligosaccharides (XOS) along with second generation ethanol. Fractionation of SCB into hemicellulose rich liquid fraction and cellulose rich solid residue was achieved using alkaline treatment. Carbohydrate rich precipitate obtained from liquid fraction was utilized for XOS production using inhouse produced endoxylanase. XOS production from SCB xylan was optimized by employing response surface methodology. Under optimized conditions, maximum XOS yield was 227.72 mg/g of carbohydrate rich precipitates. The solid residue obtained after alkaline pretreatment was used for ethanol fermentation by prehydrolysis and simultaneous saccharification and fermentation (P-SSF) process using cellulolytic enzyme cocktail and Saccharomyces cerevisiae SM1. Maximum ethanol concentration, productivity and yield were 79.76 ± 0.16 g/L, 0.83 g/L/h and 69.38%, respectively by employing P-SSF process. Based on the experimental data it can be predicted that bioconversion of 100 g raw SCB can yield 6.26 g of XOS (DP 2-DP 5), 15.95 g ethanol and 1.44 g of xylitol. Present investigation reports an integrated process for effective bioconversion of SCB into value added products by maximum utilization of cellulosic and hemicellulosic fractions simultaneously using indigenously produced fungal enzymes.
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Affiliation(s)
- Amisha Patel
- P. G. Department of Biosciences, Sardar Patel University, Anand, Gujarat, India
| | - Jyoti Divecha
- Department of Statistics, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
| | - Amita Shah
- P. G. Department of Biosciences, Sardar Patel University, Anand, Gujarat, India
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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.
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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
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Patel A, Shah AR. Integrated lignocellulosic biorefinery: Gateway for production of second generation ethanol and value added products. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2021. [DOI: 10.1016/j.jobab.2021.02.001] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Wang L, Qin X, Miao X, Chen H, Zhou Y, Cai A. Synthesis and nondestructive detailed structure characterization of carboxymethyl xylan from bagasse. J Carbohydr Chem 2020. [DOI: 10.1080/07328303.2020.1748643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Lei Wang
- Guangxi Lignocellulose Biorefinery Research Center of Engineering Technology and Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Institute of Botany, Guilin, China
| | - Xiangxiang Qin
- Guangxi Lignocellulose Biorefinery Research Center of Engineering Technology and Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Institute of Botany, Guilin, China
| | - Xueyan Miao
- School of Public Health, Guilin Medical University, Guilin, China
| | - Haishan Chen
- Guangxi Lignocellulose Biorefinery Research Center of Engineering Technology and Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Institute of Botany, Guilin, China
| | - Yuheng Zhou
- Guangxi Lignocellulose Biorefinery Research Center of Engineering Technology and Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Institute of Botany, Guilin, China
| | - Aihua Cai
- Guangxi Lignocellulose Biorefinery Research Center of Engineering Technology and Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Institute of Botany, Guilin, China
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Azouz RAM, Hegazy UM, Said MM, Bassuiny RI, Salem AM, Fahmy AS. Improving the catalytic efficiency of thermostable Geobacillus stearothermophilus xylanase XT6 by single-amino acid substitution. J Biochem 2020; 167:203-215. [PMID: 31617574 DOI: 10.1093/jb/mvz086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/02/2019] [Indexed: 01/09/2023] Open
Abstract
Directed evolution using error-prone polymerase chain reaction was employed in the current study to enhance the catalytic efficiency of a thermostable Geobacillus stearothermophilus xylanase XT6 parent. High-throughput screening identified two variants with enhanced activity. Sequencing analysis revealed the presence of a single-amino acid substitution (P209L or V161L) in each variant. The maximum activity of mutant V161L and P209L was at 85°C and 70°C, respectively. Both mutants exhibited maximum activity at pH 7. The thermal and alkaline tolerance of mutant V161L only were markedly improved. The two mutants were more resistant to ethanol inhibition than the parent. Substrate specificity of the two mutants was shifted from beechwood xylan to birchwood xylan. The potential of the two mutants to hydrolyze rice straw and sugarcane bagasse increased. Both turnover number (kcat) and catalytic efficiency (kcat/kM) increased 12.2- and 5.7-folds for variant P209L and 13- and 6.5-folds for variant V161L, respectively, towards birchwood xylan. Based on the previously published crystal structure of extracellular G. stearothermophilus xylanase XT6, V161L and P209L mutation locate on βα-loops. Conformational changes of the respective loops could potentiate the loop swinging, product release and consequently result in enhancement of the catalytic performance.
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Affiliation(s)
- Rasha A M Azouz
- Genetic Engineering and Biotechnology Research Division, Molecular Biology Department, National Research Centre, El-Behouth Street, Dokki, 12622 Giza, Egypt
| | - Usama M Hegazy
- Genetic Engineering and Biotechnology Research Division, Molecular Biology Department, National Research Centre, El-Behouth Street, Dokki, 12622 Giza, Egypt
| | - Mahmoud M Said
- Faculty of Science, Department of Biochemistry, Ain Shams University, El-Khalyfa El-Mamoun Street, Abbasya, 11566 Cairo, Egypt
| | - Roqaya I Bassuiny
- Genetic Engineering and Biotechnology Research Division, Molecular Biology Department, National Research Centre, El-Behouth Street, Dokki, 12622 Giza, Egypt
| | - Ahmed M Salem
- Faculty of Science, Department of Biochemistry, Ain Shams University, El-Khalyfa El-Mamoun Street, Abbasya, 11566 Cairo, Egypt
| | - Afaf S Fahmy
- Genetic Engineering and Biotechnology Research Division, Molecular Biology Department, National Research Centre, El-Behouth Street, Dokki, 12622 Giza, Egypt
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Bhardwaj N, Kumar B, Verma P. A detailed overview of xylanases: an emerging biomolecule for current and future prospective. BIORESOUR BIOPROCESS 2019. [DOI: 10.1186/s40643-019-0276-2] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Xylan is the second most abundant naturally occurring renewable polysaccharide available on earth. It is a complex heteropolysaccharide consisting of different monosaccharides such as l-arabinose, d-galactose, d-mannoses and organic acids such as acetic acid, ferulic acid, glucuronic acid interwoven together with help of glycosidic and ester bonds. The breakdown of xylan is restricted due to its heterogeneous nature and it can be overcome by xylanases which are capable of cleaving the heterogeneous β-1,4-glycoside linkage. Xylanases are abundantly present in nature (e.g., molluscs, insects and microorganisms) and several microorganisms such as bacteria, fungi, yeast, and algae are used extensively for its production. Microbial xylanases show varying substrate specificities and biochemical properties which makes it suitable for various applications in industrial and biotechnological sectors. The suitability of xylanases for its application in food and feed, paper and pulp, textile, pharmaceuticals, and lignocellulosic biorefinery has led to an increase in demand of xylanases globally. The present review gives an insight of using microbial xylanases as an “Emerging Green Tool” along with its current status and future prospective.
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Xian L, Li Z, Tang AX, Qin YM, Li QY, Liu HB, Liu YY. A novel neutral and thermophilic endoxylanase from Streptomyces ipomoeae efficiently produced xylobiose from agricultural and forestry residues. BIORESOURCE TECHNOLOGY 2019; 285:121293. [PMID: 30999191 DOI: 10.1016/j.biortech.2019.03.132] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 03/25/2019] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
Endoxylanases capable of producing high ratios of xylobiose from agricultural and forestry residues in neutral and high temperature conditions are attractive for the prebiotic and alternative sweetener industries. In this study, a putative glycosyl hydrolase gene from Streptomyces ipomoeae was cloned and expressed in Escherichia coli. The recombinant enzyme, named as SipoEnXyn10A, hydrolyzed beechwood xylan in endo-action mode releasing xylobiose as its main end product. It was most active at pH 6.5 and 75-80 °C and showed remarkable stability at 65 °C. The xylobiose yield from 10 g corncob and moso bamboo reached 1.123 ± 0.021 and 0.229 ± 0.005 g, respectively, at pH 6.5 and 70 °C, whichwas higher than other reports using the same material. Moreover, high ratios of xylobiose in the xylose-based product of about 85% were obtained from corncob, moso bamboo sawdust, cassava stem and Chinese fir sawdust. These results demonstrated that SipoEnXyn10A has potential for industrial application.
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Affiliation(s)
- Liang Xian
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, PR China
| | - Zhong Li
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, PR China
| | - Ai-Xing Tang
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, PR China; Guangxi Key Laboratory of Biorefinery, Nanning 530003, Guangxi, PR China
| | - Yi-Min Qin
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, PR China; Guangxi Key Laboratory of Biorefinery, Nanning 530003, Guangxi, PR China
| | - Qing-Yun Li
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, PR China; Guangxi Key Laboratory of Biorefinery, Nanning 530003, Guangxi, PR China
| | - Hai-Bo Liu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, PR China; Guangxi Key Laboratory of Biorefinery, Nanning 530003, Guangxi, PR China
| | - You-Yan Liu
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, PR China; Guangxi Key Laboratory of Biorefinery, Nanning 530003, Guangxi, PR China.
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10
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Bioactive compounds from by-products of rice cultivation and rice processing: Extraction and application in the food and pharmaceutical industries. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.02.041] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Enzymatic hydrolysis of tropical weed xylans using xylanase from Aureobasidium melanogenum PBUAP46 for xylooligosaccharide production. 3 Biotech 2019; 9:56. [PMID: 30729080 DOI: 10.1007/s13205-019-1586-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 01/17/2019] [Indexed: 10/27/2022] Open
Abstract
The maximum yield of xylanase from Aureobasidium melanogenum PBUAP46 was 5.19 ± 0.08 U ml-1 when cultured in a production medium containing 3.89% (w/v) rice straw and 0.75% (w/v) NaNO3 as carbon and nitrogen sources, respectively, for 72 h. This enzyme catalyzed well and was relatively stable at pH 7.0 and room temperature (28 ± 2 °C). The produced xylanase was used to hydrolyze xylans from four tropical weeds, whereupon it was found that the highest amounts of reducing sugars in the xylan hydrolysates of cogon grass (Imperata cylindrical), Napier grass (Pennisetum purpureum), and vetiver grass (Vetiveria zizanioides) were at 20.44 ± 0.84, 17.50 ± 0.29, and 19.44 ± 0.40 mg 100 mg xylan-1, respectively, but it was not detectable in water hyacinth (Eichhornia crassipes) hydrolysate. The highest combined amount of xylobiose and xylotriose was obtained from vetiver grass; thus, it was selected for further optimization. After optimization, xylanase digestion of vetiver grass xylan at 27.94 U g xylan-1 for 92 h 19 min gave the highest amount of reducing sugars (23.65 ± 1.34 mg 100 mg xylan-1), which were principally xylobiose and xylotriose. The enriched XOs exhibited a prebiotic property, significantly stimulating the growth of Lactobacillus brevis and L. casei by a factor of up to 3.5- and 6.5-fold, respectively, compared to glucose.
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Costa JR, Tonon RV, Gottschalk LM, Santiago MCDA, Mellinger-Silva C, Pastrana L, Pintado MM, Cabral LM. Enzymatic production of xylooligosaccharides from Brazilian Syrah grape pomace flour: a green alternative to conventional methods for adding value to agricultural by- products. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:1250-1257. [PMID: 30066395 DOI: 10.1002/jsfa.9297] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The aim of this work was to determine the most favorable conditions for the production of xylooligosaccharides (XOS) from Brazilian Syrah grape pomace. Chemical processes were performed using a rotatable central composite design where the concentration of sulfuric acid or sodium hydroxide and the grape pomace flour/solvent mass ratio were the dependent variables. Enzymatic production was also evaluated using xylanase produced by Aspergillus niger 3T5B8 and Viscozyme® enzymatic commercial cocktail. RESULTS Chemical extraction allowed to recover 21.8-74.6% and 5.2-96.3% of total XOS for acidic and alkaline processes respectively. Enzymatic production extracted up to 88.68 ± 0.12% of total XOS using xylanase and up to 84.09 ± 2.40% with Viscozyme® . CONCLUSION The present study demonstrated different feasible methods to produce high-added-value molecules, i.e. XOS, from Syrah grape pomace flour, valorizing this major by-product. The use of enzymatic cocktails demonstrated to be an alternative to the conventional methods, allowing to obtain an eco-friendly and sustainable grape pomace extract. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Joana R Costa
- CBQF - Center for Biotechnology and Fine Chemistry, School of Biotechnology, Catholic University of Portugal, Porto, Portugal
| | - Renata V Tonon
- Embrapa Agroindústria de Alimentos, Rio de Janeiro, Brazil
| | | | | | | | - Lorenzo Pastrana
- International Iberian Nanotechnology Laboratory (INL), Braga, Portugal
| | - Maria M Pintado
- CBQF - Center for Biotechnology and Fine Chemistry, School of Biotechnology, Catholic University of Portugal, Porto, Portugal
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Vazquez-Olivo G, Gutiérrez-Grijalva EP, Heredia JB. Prebiotic compounds from agro-industrial by-products. J Food Biochem 2018; 43:e12711. [PMID: 31353613 DOI: 10.1111/jfbc.12711] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 09/20/2018] [Accepted: 10/02/2018] [Indexed: 11/26/2022]
Abstract
Prebiotics are nondigestible food components that have an impact on gut microbiota composition and activity, which in turn results in the improvement of health conditions. Nowadays, the production of prebiotics from agro-industrial by-products is under investigation. In this regard, polysaccharides are usually found in these sources and their potential use as prebiotics has been studied recently since these compounds act as substrates for the human gut microbiota, and they have the potential to modulate its composition through many mechanisms. Additionally, the use of agricultural by-products is advantageous because it is a cheap and abundantly available material. This review focuses on the recent scientific literature regarding the prebiotic properties of polysaccharides from agro-industrial by-products. PRACTICAL APPLICATIONS: Currently, the maintenance of gut homeostasis is a target for the improvement of human health. This review can broaden the perspective on the utilization of agro-industrial by-products that can compete in the market with the commercial ones or act as a source for new food ingredients.
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Affiliation(s)
- Gabriela Vazquez-Olivo
- CONACyT - Centro de Investigación en Alimentación y Desarrollo A.C., Nutraceuticals and Functional Foods Laboratory, Culiacan, México
| | - Erick P Gutiérrez-Grijalva
- CONACyT - Centro de Investigación en Alimentación y Desarrollo A.C., Nutraceuticals and Functional Foods Laboratory, Culiacan, México
| | - José Basilio Heredia
- CONACyT - Centro de Investigación en Alimentación y Desarrollo A.C., Nutraceuticals and Functional Foods Laboratory, Culiacan, México
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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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15
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Jagtap S, Deshmukh RA, Menon S, Das S. Xylooligosaccharides production by crude microbial enzymes from agricultural waste without prior treatment and their potential application as nutraceuticals. BIORESOURCE TECHNOLOGY 2017; 245:283-288. [PMID: 28892703 DOI: 10.1016/j.biortech.2017.08.174] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/24/2017] [Accepted: 08/29/2017] [Indexed: 06/07/2023]
Abstract
Aspergillus fumigatus R1, on submerged fermentation using agricultural residues as carbon source produced extracellular xylanase (152IU/ml after 96h of incubation at 37°C with constant shaking at 100rpm). A maximum yield of 1gm% Xylooligosaccharides (XOS) mixture was obtained after 12h by enzymatic hydrolysis of xylan rich wheat husk without any prior pretreatment using the crude enzyme without any purification. HP-TLC data confirmed the presence of an array of XOS for its prebiotic properties by carrying out studies on ten standard probiotic cultures. Six of ten probiotic cultures were able to utilize XOS produced from agricultural wastes and showed remarkable growth in the media containing XOS as the sole source of carbon. XOS mixture also exhibited concentration dependent anti-oxidant activity. Thus, the results showed that XOS produced from agricultural residues have great prebiotic potential and good antioxidant activity; therefore, it can be used in food-related applications.
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Affiliation(s)
- Sharmili Jagtap
- Department of Microbiology, School of Life-Sciences, Pondicherry University, R.V. Nagar, Kalapet, Puducherry 605014, India.
| | - Rehan Ahmed Deshmukh
- Department of Microbiology, School of Life-Sciences, Pondicherry University, R.V. Nagar, Kalapet, Puducherry 605014, India
| | - Shylaja Menon
- Department of Microbiology, School of Life-Sciences, Pondicherry University, R.V. Nagar, Kalapet, Puducherry 605014, India
| | - Santanu Das
- Department of Microbiology, School of Life-Sciences, Pondicherry University, R.V. Nagar, Kalapet, Puducherry 605014, India
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16
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Kocabas DS, Ozben N. Co-production of xylanase and xylooligosaccharides from lignocellulosic agricultural wastes. RSC Adv 2014. [DOI: 10.1039/c4ra02508c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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