151
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Zhang B, Hao GJ, Cao HJ, Tang H, Zhang YY, Deng SG. The cryoprotectant effect of xylooligosaccharides on denaturation of peeled shrimp (Litopenaeus vannamei) protein during frozen storage. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.09.038] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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152
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Xylobiose Prevents High-Fat Diet Induced Mice Obesity by Suppressing Mesenteric Fat Deposition and Metabolic Dysregulation. Molecules 2018; 23:molecules23030705. [PMID: 29558403 PMCID: PMC6017709 DOI: 10.3390/molecules23030705] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 03/09/2018] [Accepted: 03/16/2018] [Indexed: 12/13/2022] Open
Abstract
Obesity is a public concern and is responsible for various metabolic diseases. Xylobiose (XB), an alternative sweetener, is a major component of xylo-oligosaccharide. The purpose of this study was to investigate the effects of XB on obesity and its associated metabolic changes in related organs. For these studies, mice received a 60% high-fat diet supplemented with 15% d-xylose, 10% XB, or 15% XB as part of the total sucrose content of the diet for ten weeks. Body weight, fat and liver weights, fasting blood glucose, and blood lipids levels were significantly reduced with XB supplementation. Levels of leptin and adipokine were also improved and lipogenic and adipogenic genes in mesenteric fat and liver were down-regulated with XB supplementation. Furthermore, pro-inflammatory cytokines, fatty acid uptake, lipolysis, and β-oxidation-related gene expression levels in mesenteric fat were down-regulated with XB supplementation. Thus, XB exhibited therapeutic potential for treating obesity which involved suppression of fat deposition and obesity-related metabolic disorders.
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153
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Xiong K, Xiong S, Gao S, Li Q, Sun B, Li X. Improving Hydrolysis Characteristics of Xylanases by Site-Directed Mutagenesis in Binding-Site Subsites from Streptomyces L10608. Int J Mol Sci 2018. [PMID: 29533991 PMCID: PMC5877695 DOI: 10.3390/ijms19030834] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The preparation of oligosaccharides via xylan hydrolysis is an effective way to add value to hemicellulosic material of agricultural waste. The bacterial strain Streptomyces L10608, isolated from soil, contains genes encoding xylanases of glucoside hydrolase family 10/11 (GH10/11), and these have been cloned to catalyze the production of xylooligosaccharide (XOS). To improve the XOS proportion of hydrolysates produced by xylanase, four amino acid residues were substituted by site-directed mutagenesis, and the mutant genes were overexpressed in Escherichia coli. Mutations replaced the codons encoding Asn214 (+2) and Asn86 (−2) by Ala and removed the Ricin B-lectin domain in GH10-xyn, and mutants Y115A (−2) and Y123A (−2) were produced for GH11-xyn. Interestingly, GH10-N86Q had significantly increased hydrolysis of XOS and almost eliminated xylose (X1) to <2.5%, indicating that the −2 binding site of GH10-xyn of L10608 is required for binding with xylotriose (X3). The hydrolytic activity of GH10-N86Q was increased approximately 1.25-fold using beechwood xylan as a substrate and had high affinity for the substrate with a low Km of about 1.85 mg·mL−1. Otherwise, there were no significant differences in enzymatic properties between GH10-N86Q and GH10-xyn. These mutants offer great potential for modification of xylanase with desired XOS hydrolysis.
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Affiliation(s)
- Ke Xiong
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
- Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
| | - Suyue Xiong
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
| | - Siyu Gao
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
- Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
| | - Qin Li
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
| | - Baoguo Sun
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
- Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
| | - Xiuting Li
- Beijing Innovation Centre of Food Nutrition and Human, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
- Beijing Laboratory for Food Quality and Safety, Beijing Technology & Business University (BTBU), No. 33 Fucheng Road, Haidian, Beijing 100048, China.
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154
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Carlson JL, Erickson JM, Lloyd BB, Slavin JL. Health Effects and Sources of Prebiotic Dietary Fiber. Curr Dev Nutr 2018; 2:nzy005. [PMID: 30019028 PMCID: PMC6041804 DOI: 10.1093/cdn/nzy005] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 08/04/2017] [Accepted: 01/14/2018] [Indexed: 12/21/2022] Open
Abstract
Prebiotic dietary fibers act as carbon sources for primary and secondary fermentation pathways in the colon, and support digestive health in many ways. Fructooligosaccharides, inulin, and galactooligosaccharides are universally agreed-upon prebiotics. The objective of this paper is to summarize the 8 most prominent health benefits of prebiotic dietary fibers that are due to their fermentability by colonic microbiota, as well as summarize the 8 categories of prebiotic dietary fibers that support these health benefits. Although not all categories exhibit similar effects in human studies, all of these categories promote digestive health due to their fermentability. Scientific and regulatory definitions of prebiotics differ greatly, although health benefits of these compounds are uniformly agreed upon to be due to their fermentability by gut microbiota. Scientific evidence suggests that 8 categories of compounds all exhibit health benefits related to their metabolism by colonic taxa.
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Affiliation(s)
- Justin L Carlson
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN
| | - Jennifer M Erickson
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN
| | - Beate B Lloyd
- Global Scientific & Regulatory Affairs, The Coca-Cola Company, Atlanta, GA
| | - Joanne L Slavin
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN
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155
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Improvement of the catalytic characteristics of a salt-tolerant GH10 xylanase from Streptomyce rochei L10904. Int J Biol Macromol 2018; 107:1447-1455. [DOI: 10.1016/j.ijbiomac.2017.10.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 09/30/2017] [Accepted: 10/03/2017] [Indexed: 11/18/2022]
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156
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Carvalho AFA, Marcondes WF, de Oliva Neto P, Pastore GM, Saddler JN, Arantes V. The potential of tailoring the conditions of steam explosion to produce xylo-oligosaccharides from sugarcane bagasse. BIORESOURCE TECHNOLOGY 2018; 250:221-229. [PMID: 29174899 DOI: 10.1016/j.biortech.2017.11.041] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/09/2017] [Accepted: 11/13/2017] [Indexed: 06/07/2023]
Abstract
In this study, the potential of the steam explosion (SE) method to produce high levels XOS from sugarcane bagasse, a xylan-rich hemicellulosic feedstock, was assessed. The effect of different operating conditions on XOS production yield and selectivity were investigated using a mini-pilot scale SE unit. The results show that even under a non-optimized condition (190 °C, 5 min and 0.5% H2SO4 as catalyst), SE led to about 40% xylan recovery as XOS, which was comparable to the well-known, multi-step, enzymatic production of XOS from alkaline-extracted xylan, and other commonly employed chemical methods. In addition, the XOS-rich hydrolysate from SE constituted of greater diversity in the degree of polymerization, which has been shown to be desirable for prebiotic application.
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Affiliation(s)
- Ana Flavia Azevedo Carvalho
- Department of Wood Science, Forest Sciences Centre, University of British Columbia, 2424 Main Mall, V6TIZ4 Vancouver, BC, Canada; Associated Laboratory of Bioenergy Research Institute (IPBEN), Bioprocess Unit, São Paulo State University (UNESP), Av. Dom Antonio, 2100, 19806-380 Assis, SP, Brazil; Department of Food Science, School of Food Engineering, State University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, 13083-862 Campinas, SP, Brazil
| | - Wilian Fioreli Marcondes
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo (USP), Lorena, SP, Brazil
| | - Pedro de Oliva Neto
- Associated Laboratory of Bioenergy Research Institute (IPBEN), Bioprocess Unit, São Paulo State University (UNESP), Av. Dom Antonio, 2100, 19806-380 Assis, SP, Brazil
| | - Glaucia Maria Pastore
- Department of Food Science, School of Food Engineering, State University of Campinas (UNICAMP), Rua Monteiro Lobato, 80, 13083-862 Campinas, SP, Brazil
| | - Jack N Saddler
- Department of Wood Science, Forest Sciences Centre, University of British Columbia, 2424 Main Mall, V6TIZ4 Vancouver, BC, Canada
| | - Valdeir Arantes
- Department of Biotechnology, Lorena School of Engineering, University of São Paulo (USP), Lorena, SP, Brazil.
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157
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Courtin CM, Broekaert WF, Swennen K, Aerts G, Van Craeyveld V, Delcour JA. Occurrence of Arabinoxylo-Oligosaccharides and Arabinogalactan Peptides in Beer. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2009-0323-01] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Christophe M. Courtin
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Center (LFORCE), K. U. Leuven, Leuven, Belgium
| | - Willem F. Broekaert
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Center (LFORCE), K. U. Leuven, Leuven, Belgium
| | - Katrien Swennen
- Laboratory of Food Chemistry and Biochemistry and Leuven Food Science and Nutrition Research Center (LFORCE), K. U. Leuven, Leuven, Belgium
| | - Guido Aerts
- Laboratory of Enzyme and Brewing Technology, KaHo St.-Lieven, Gent, Belgium
| | - Valerie Van Craeyveld
- Laboratory of Food Chemistry and Biochemistry and LFORCE, K. U. Leuven, Leuven, Belgium
| | - Jan A. Delcour
- Laboratory of Food Chemistry and Biochemistry and LFORCE, K. U. Leuven, Leuven, Belgium
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158
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Zhang J, Wang YH, Wei QY, Du XJ, Qu YS. Investigating desorption during ethanol elution to improve the quality and antioxidant activity of xylo-oligosaccharides from corn stalk. BIORESOURCE TECHNOLOGY 2018; 249:342-347. [PMID: 29054065 DOI: 10.1016/j.biortech.2017.09.203] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 09/29/2017] [Accepted: 09/30/2017] [Indexed: 06/07/2023]
Abstract
As the most representative of lignocellulosic materials, corn stalk (CS) will be a great candidate to produce xylo-oligosaccharides (XOS). Owing to the high impurity content of the XOS produced by directly enzymatic hydrolysis of xylan extracted from CS, subsequent refining steps are essential. The present study was aimed to investigate desorption during ethanol elution to improve the quality and antioxidant activity of XOS from CS. The desorption was systematically investigated after optimizing the elution conditions. The results showed that it had an elution watershed when the volume ratio was 2:1. More interestingly, XOS had a obvious priorities of desorption during ethanol gradient elution. The highest purity of XOS was 98.12% from 30% ethanol eluate. Antioxidant activity assay showed that the highest radical scavenging activity of XOS was 89.89% obtained from 70% ethanol eluate at a concentration of 3 mg/mL, which could be used in antioxidant food, feed additives.
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Affiliation(s)
- Jie Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yue-Hai Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Quan-Yuan Wei
- Beijing Municipal Research Academy of Environmental Protection, Beijing 100037, China
| | - Xiao-Jia Du
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yong-Shui Qu
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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159
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Wang YH, Zhang J, Qu YS, Li HQ. Removal of chromophore in enzymatic hydrolysis by acid precipitation to improve the quality of xylo-oligosaccharides from corn stalk. BIORESOURCE TECHNOLOGY 2018; 249:751-757. [PMID: 29101893 DOI: 10.1016/j.biortech.2017.08.068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 08/10/2017] [Accepted: 08/11/2017] [Indexed: 06/07/2023]
Abstract
As the most representative functional sugar, the application areas and market demands of xylo-oligosaccharides (XOS) have been expanding year by year. Owing to the complex structure of corn stalk (CS), XOS obtained from CS are accompanied by problems such as low purity and high color value, which degrade the product. To improve the quality of XOS from CS, the enzymatic hydrolysis was precipitated by acid; then, the ethanol elution concentration was systematically investigated after optimizing the adsorption conditions. The results showed that the purity of XOS was increased to 87.28% from 67.31%, and the color value was decreased to 1050 from 4682 when the acid precipitation pH was 2. On the basis of acid precipitation, if the corresponding optimal conditions of XOS adsorption and elution were used, the highest purity of XOS was 97.87% obtained, with the lowest color value, 780, which reached the standard of the commercial XOS.
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Affiliation(s)
- Yue-Hai Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Beijing University of Chemical Technology, Beijing 100029, China
| | - Jie Zhang
- Beijing University of Chemical Technology, Beijing 100029, China
| | - Yong-Shui Qu
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Hong-Qiang Li
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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160
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Action of different types of endoxylanases on eucalyptus xylan in situ. Appl Microbiol Biotechnol 2018; 102:1725-1736. [PMID: 29302718 DOI: 10.1007/s00253-017-8722-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 12/13/2017] [Accepted: 12/17/2017] [Indexed: 10/18/2022]
Abstract
Most studies of the mode of action of industrially important endoxylanases have been done on alkali extracted-plant xylan. In just few cases, the native form of the polysaccharide, acetylated xylan, was used as a substrate. In this work action of xylanases belonging to three glycoside hydrolase families, GH10, GH11, and GH30 was investigated on acetylglucuronoxylan directly in hardwood cell walls. Powdered eucalyptus wood was used as xylanase substrate. Enzyme-generated fragments were characterized by TLC, MALDI ToF MS, and NMR spectroscopy. All three xylanases generated from eucalyptus wood powder acetylated xylooligosaccharides. Those released by GH10 enzyme were the shortest, and those released by GH30 xylanase were of the largest diversity. For GH30 xylanase the 4-O-methyl-D-glucuronic acid (MeGlcA) side residues function as substrate specificity determinants regardless the acetylation of the neighboring hydroxyl group. Much simpler xylooligosaccharide patterns were observed when xylanases were applied in combination with carbohydrate esterase family 6 acetylxylan esterase. In the presence of the esterase, all aldouronic acids remained 3-O-acetylated on the xylopyranosyl (Xylp) residue substituted with MeGlcA. The 3-O-acetyl group, in contrast to the acetyl groups of otherwise unsubstituted Xylp residues, does not affect the mode of action of endoxylanases, but contributes to recalcitrance of the acidic xylan fragments. The results confirm importance of acetylxylan esterases in microbial degradation of acetylated hardwood glucuronoxylan. They also point to still unresolved question of efficient enzymatic removal of the 3-O-acetyl group on MeGlcA-substituted Xylp residues negatively affecting the saccharification yields.
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161
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de Oliveira SM, Moreno-Perez S, Terrasan CRF, Romero-Fernández M, Vieira MF, Guisan JM, Rocha-Martin J. Covalent immobilization-stabilization of β-1,4-endoxylanases from Trichoderma reesei : Production of xylooligosaccharides. Process Biochem 2018. [DOI: 10.1016/j.procbio.2017.09.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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162
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Purification and characterization of a cellulase-free, thermostable endo-xylanase from Streptomyces griseorubens LH-3 and its use in biobleaching on eucalyptus kraft pulp. J Biosci Bioeng 2018; 125:46-51. [DOI: 10.1016/j.jbiosc.2017.08.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 07/16/2017] [Accepted: 08/11/2017] [Indexed: 11/18/2022]
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163
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Wang Y, Cao X, Zhang R, Xiao L, Yuan T, Shi Q, Sun R. Evaluation of xylooligosaccharide production from residual hemicelluloses of dissolving pulp by acid and enzymatic hydrolysis. RSC Adv 2018; 8:35211-35217. [PMID: 35547053 PMCID: PMC9087475 DOI: 10.1039/c8ra07140c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 10/09/2018] [Indexed: 11/21/2022] Open
Abstract
Xylooligosaccharides (XOS) are useful food and pharmaceutical additives, which can be produced from various xylans. However, the XOS prepared from lignocellulosic materials are difficult to purify due to the complexity of the degradation products. Thus, hemicelluloses with a high-purity will be the preferred feedstock for XOS production. In this work, acid hydrolysis and enzymatic hydrolysis were applied to prepare XOS from the residual hemicelluloses of the dissolving pulp. The results showed that the highest XOS yield (45.18%) obtained from the acid hydrolysis was achieved with 1% sulfuric acid at 120 °C for 60 min, and xylohexaose accounted for 47% of the XOS. For enzymatic hydrolysis, under optimal conditions, the highest XOS yield of 42.96% was observed, and xylobiose and xylotriose comprised 90.5% of the XOS. It is suggested that the distribution of the XOS could be controlled significantly according to the enzymatic or acid hydrolysis conditions used. The hemicelluloses extracted from dissolving pulp were applied to produce xylooligosaccharides (XOS) by acid and enzymatic hydrolysis.![]()
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Affiliation(s)
- Yuanyuan Wang
- Beijing Key Laboratory of Lignocellulosic Chemistry
- Beijing Forestry University
- Beijing
- China
| | - Xuefei Cao
- Beijing Key Laboratory of Lignocellulosic Chemistry
- Beijing Forestry University
- Beijing
- China
| | - Ruochen Zhang
- Beijing Key Laboratory of Lignocellulosic Chemistry
- Beijing Forestry University
- Beijing
- China
| | - Lin Xiao
- Shandong Longlive Bio-Technology Co., Ltd
- China
| | - Tongqi Yuan
- Beijing Key Laboratory of Lignocellulosic Chemistry
- Beijing Forestry University
- Beijing
- China
| | - Quentin Shi
- Jining Mingsheng New Materials Co., Ltd
- Xinglong Industrial Park
- Jining City
- China
| | - Runcang Sun
- Beijing Key Laboratory of Lignocellulosic Chemistry
- Beijing Forestry University
- Beijing
- China
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164
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Long C, Cui J, Li H, Liu J, Gan L, Zeng B, Long M. Improvement in xylooligosaccharides production by knockout of the β- xyl1 gene in Trichoderma orientalis EU7-22. 3 Biotech 2018; 8:26. [PMID: 29279819 PMCID: PMC5736498 DOI: 10.1007/s13205-017-1041-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 12/08/2017] [Indexed: 11/29/2022] Open
Abstract
The goal of this study was to enhance the production of xylooligosaccharides (XOs) and reduce the production of xylose. We investigated β-xylosidases, which were key enzymes in the hydrolysis of xylan into xylose, in Trichoderma orientalis EU7-22. The binary vector pUR5750G/bxl::hph was constructed to knock out the β-xyl1 gene (encoding β-xylosidases) in T. orientalis EU7-22 by homologous integration, producing the mutant strain T. orientalis Bxyl-1. Xylanase activity for strain Bxyl-1 was 452.42 IU/mL, which increased by only 0.07% compared to that of parental strain EU7-22, whereas β-xylosidase activity was 0.06 IU/mL, representing a 91.89% decrease. When xylanase (200 IU/g xylan), produced by T. orientalis EU7-22 and T. orientalis Bxyl-1, was used to hydrolyze beechwood xylan, in contrast to the parental strain, the XOs were enhanced by 83.27%, whereas xylose decreased by 45.80% after 36 h in T. orientalis Bxyl-1. Based on these results, T. orientalis Bxyl-1 has great potential for application in the production of XOs from lignocellulosic biomass.
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Affiliation(s)
- Chuannan Long
- Jiangxi Key Laboratory of Bioprocess Engineering, Jiangxi Science and Technology Normal University, Nanchang, 330013 People’s Republic of China
- School of Life Science, Jiangxi Science and Technology Normal University, Nanchang, 330013 People’s Republic of China
| | - Jingjing Cui
- Jiangxi Key Laboratory of Bioprocess Engineering, Jiangxi Science and Technology Normal University, Nanchang, 330013 People’s Republic of China
- College of Energy, Xiamen University, Xiamen, 361005 People’s Republic of China
- National Engineering Laboratory for Green Chemical Productions of Alcohols Ethers Esters, Xiamen University, Xiamen, 361005 People’s Republic of China
| | - Hailong Li
- College of Energy, Xiamen University, Xiamen, 361005 People’s Republic of China
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640 People’s Republic of China
| | - Jian Liu
- College of Energy, Xiamen University, Xiamen, 361005 People’s Republic of China
| | - Lihui Gan
- College of Energy, Xiamen University, Xiamen, 361005 People’s Republic of China
| | - Bin Zeng
- Jiangxi Key Laboratory of Bioprocess Engineering, Jiangxi Science and Technology Normal University, Nanchang, 330013 People’s Republic of China
- School of Life Science, Jiangxi Science and Technology Normal University, Nanchang, 330013 People’s Republic of China
| | - Minnan Long
- College of Energy, Xiamen University, Xiamen, 361005 People’s Republic of China
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165
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Carlson JL, Erickson JM, Hess JM, Gould TJ, Slavin JL. Prebiotic Dietary Fiber and Gut Health: Comparing the in Vitro Fermentations of Beta-Glucan, Inulin and Xylooligosaccharide. Nutrients 2017; 9:E1361. [PMID: 29244718 PMCID: PMC5748811 DOI: 10.3390/nu9121361] [Citation(s) in RCA: 122] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 12/09/2017] [Accepted: 12/13/2017] [Indexed: 01/01/2023] Open
Abstract
Prebiotic dietary fiber supplements are commonly consumed to help meet fiber recommendations and improve gastrointestinal health by stimulating beneficial bacteria and the production of short-chain fatty acids (SCFAs), molecules beneficial to host health. The objective of this research project was to compare potential prebiotic effects and fermentability of five commonly consumed fibers using an in vitro fermentation system measuring changes in fecal microbiota, total gas production and formation of common SCFAs. Fecal donations were collected from three healthy volunteers. Materials analyzed included: pure beta-glucan, Oatwell (commercially available oat-bran containing 22% oat β-glucan), xylooligosaccharides (XOS), WholeFiber (dried chicory root containing inulin, pectin, and hemi/celluloses), and pure inulin. Oatwell had the highest production of propionate at 12 h (4.76 μmol/mL) compared to inulin, WholeFiber and XOS samples (p < 0.03). Oatwell's effect was similar to those of the pure beta-glucan samples, both samples promoted the highest mean propionate production at 24 h. XOS resulted in a significant increase in the genus Bifidobacterium after 24 h of fermentation (0 h:0.67 OTUs (operational taxonomic unit); 24 h:5.22 OTUs; p = 0.038). Inulin and WholeFiber increased the beneficial genus Collinsella, consistent with findings in clinical studies. All analyzed compounds were fermentable and promoted the formation of beneficial SCFAs.
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Affiliation(s)
- Justin L Carlson
- Department of Food Science and Nutrition, University of Minnesota, 1334 Eckles Ave, St. Paul, MN 55108, USA.
| | - Jennifer M Erickson
- Department of Food Science and Nutrition, University of Minnesota, 1334 Eckles Ave, St. Paul, MN 55108, USA.
| | - Julie M Hess
- Department of Food Science and Nutrition, University of Minnesota, 1334 Eckles Ave, St. Paul, MN 55108, USA.
| | - Trevor J Gould
- Informatics Institute, University of Minnesota, 101 Pleasant St., Minneapolis, MN 55455, USA.
| | - Joanne L Slavin
- Department of Food Science and Nutrition, University of Minnesota, 1334 Eckles Ave, St. Paul, MN 55108, USA.
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166
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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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167
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A novel trifunctional, family GH10 enzyme from Acidothermus cellulolyticus 11B, exhibiting endo-xylanase, arabinofuranosidase and acetyl xylan esterase activities. Extremophiles 2017; 22:109-119. [DOI: 10.1007/s00792-017-0981-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 11/14/2017] [Indexed: 10/18/2022]
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168
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Palaniappan A, Balasubramaniam VG, Antony U. Prebiotic potential of xylooligosaccharides derived from finger millet seed coat. FOOD BIOTECHNOL 2017. [DOI: 10.1080/08905436.2017.1369433] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ayyappan Palaniappan
- Centre for Food Technology, Department of Biotechnology, Anna University, Chennai, Tamilnadu, India
| | | | - Usha Antony
- Centre for Food Technology, Department of Biotechnology, Anna University, Chennai, Tamilnadu, India
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169
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Lee CG, Choi JH, Park C, Wang NHL, Mun S. Standing wave design and optimization of a simulated moving bed chromatography for separation of xylobiose and xylose under the constraints on product concentration and pressure drop. J Chromatogr A 2017; 1527:80-90. [PMID: 29096923 DOI: 10.1016/j.chroma.2017.10.067] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/24/2017] [Accepted: 10/27/2017] [Indexed: 11/18/2022]
Abstract
The feasibility of a simulated moving bed (SMB) technology for the continuous separation of high-purity xylobiose (X2) from the output of a β-xylosidase X1→X2 reaction has recently been confirmed. To ensure high economical efficiency of the X2 production method based on the use of xylose (X1) as a starting material, it is essential to accomplish the comprehensive optimization of the X2-separation SMB process in such a way that its X2 productivity can be maximized while maintaining the X2 product concentration from the SMB as high as possible in consideration of a subsequent lyophilization step. To address this issue, a suitable SMB optimization tool for the aforementioned task was prepared based on standing wave design theory. The prepared tool was then used to optimize the SMB operation parameters, column configuration, total column number, adsorbent particle size, and X2 yield while meeting the constraints on X2 purity, X2 product concentration, and pressure drop. The results showed that the use of a larger particle size caused the productivity to be limited by the constraint on X2 product concentration, and a maximum productivity was attained by choosing the particle size such that the effect of the X2-concentration limiting factor could be balanced with that of pressure-drop limiting factor. If the target level of X2 product concentration was elevated, higher productivity could be achieved by decreasing particle size, raising the level of X2 yield, and increasing the column number in the zones containing the front and rear of X2 solute band.
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Affiliation(s)
- Chung-Gi Lee
- Department of Chemical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, 04763, South Korea
| | - Jae-Hwan Choi
- Department of Chemical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, 04763, South Korea
| | - Chanhun Park
- Department of Chemical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, 04763, South Korea
| | - Nien-Hwa Linda Wang
- School of Chemical Engineering, 480 Stadium Mall Drive, Purdue University, West Lafayette, IN 47907-2100, USA
| | - Sungyong Mun
- Department of Chemical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, 04763, South Korea.
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170
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Mano MCR, Neri-Numa IA, da Silva JB, Paulino BN, Pessoa MG, Pastore GM. Oligosaccharide biotechnology: an approach of prebiotic revolution on the industry. Appl Microbiol Biotechnol 2017; 102:17-37. [DOI: 10.1007/s00253-017-8564-2] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/19/2017] [Accepted: 09/28/2017] [Indexed: 12/25/2022]
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171
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Kaprelyants L, Zhurlova O, Shpyrko T, Pozhitkova L. XYLOOLIGOSACCHARIDES FROM AGRICULTURAL BY-PRODUCTS: CHARACTERISATION, PRODUCTION AND PHYSIOLOGICAL EFFECTS. FOOD SCIENCE AND TECHNOLOGY 2017. [DOI: 10.15673/fst.v11i3.606] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The current study is a review of characteristics, production, physiological properties and application of xylooligosaccharides (XOS). XOS are the carbohydrates, their molecules are built from xylose residues linked mainly by в-(1→4)-glycoside bonds. Xylan is important for plant cell walls and is widely spread component in agricultural by-products. XOS are products of xylan hydrolytic degradation, and exhibiting the high prebiotic potential. The XOS preparation of wheat and rye bran stimulated the cells accumulation ‑ 1,4∙1010 CFU/cm3 of L. аcidophilus and 9,2∙1010 CFU/cm3 of В. bifidum. A difference in XOS molecules branching causes a wide range of their physiological properties: antioxidant, immunomodulation, antimicrobial, anti-inflammatory, anticarcinogenic. XOS can reduce high cholesterol level and triglycerides in blood plasma. XOS application reviewed in this article opens new perspectives on its potential use for human consumption. The rich sources of xylan are wheat, rye and barley bran, rice husk, wheat straw, corncobs, cotton stalk. Industrial way of XOS production includes chemical or enzymatic hydrolysis with following purification. Chemical methods are based on hydrothermal pretreatment and acidic or alkali extraction. Obtained oligosaccharides have a wide range of polymerization degree (DP) from 2 to 20. Enzymatic methods include fermentation with xylanase that allow controlling the XOS accumulation with certain DP. The different chromatographic purification after hydrolysis is used for analytical purposes. There are anion-exchange, size-exclusion, affinity, size-exclusion high-performance liquid chromatography. In addition, biomethods are preferred for XOS used in food, because such preparations do not contain monosaccharides and furfural as contaminants. XOS are stable in a wide range of temperature and pH, justifying the development of new synbiotics generation. Most widely XOS are used in production of functional products and pharmaceutical preparations. But they are also applied in cosmetic, agricultural and mixed feed industries.
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172
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Salas-Veizaga DM, Villagomez R, Linares-Pastén JA, Carrasco C, Álvarez MT, Adlercreutz P, Nordberg Karlsson E. Extraction of Glucuronoarabinoxylan from Quinoa Stalks (Chenopodium quinoa Willd.) and Evaluation of Xylooligosaccharides Produced by GH10 and GH11 Xylanases. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:8663-8673. [PMID: 28799759 DOI: 10.1021/acs.jafc.7b01737] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Byproducts from quinoa are not yet well explored sources of hemicellulose or products thereof. In this work, xylan from milled quinoa stalks was retrieved to 66% recovery by akaline extraction using 0.5 M NaOH at 80 °C, followed by ethanol precipitation. The isolated polymer eluted as a single peak in size-exclusion chromatography with a molecular weight of >700 kDa. Analysis by Fourier transform infrared spectroscopy and nuclear magnetic resonance (NMR) combined with acid hydrolysis to monomers showed that the polymer was built of a backbone of β(1 → 4)-linked xylose residues that were substituted by 4-O-methylglucuronic acids, arabinose, and galactose in an approximate molar ratio of 114:23:5:1. NMR analysis also indicated the presence of α(1 → 5)-linked arabinose substituents in dimeric or oligomeric forms. The main xylooligosaccharides (XOs) produced after hydrolysis of the extracted glucuronoarabinoxylan polymer by thermostable glycoside hydrolases (GHs) from families 10 and 11 were xylobiose and xylotriose, followed by peaks of putative substituted XOs. Quantification of the unsubstituted XOs using standards showed that the highest yield from the soluble glucuronoarabinoxylan fraction was 1.26 g/100 g of xylan fraction, only slightly higher than the yield (1.00 g/100 g of xylan fraction) from the insoluble fraction (p < 0.05). No difference in yield was found between reactions in buffer or water (p > 0.05). This study shows that quinoa stalks represent a novel source of glucuronoarabinoxylan, with a substituent structure that allowed for limited production of XOs by GH10 or GH11 enzymes.
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Affiliation(s)
- Daniel Martin Salas-Veizaga
- Instituto de Investigaciones Fármaco Bioquímicas, Universidad Mayor de San Andrés , Post Office Box 3239, La Paz, Bolivia
| | | | | | - Cristhian Carrasco
- Instituto de Investigación y Desarrollo de Procesos Químicos, Universidad Mayor de San Andrés , Post Office Box 12958, La Paz, Bolivia
| | - María Teresa Álvarez
- Instituto de Investigaciones Fármaco Bioquímicas, Universidad Mayor de San Andrés , Post Office Box 3239, La Paz, Bolivia
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173
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Seesuriyachan P, Kawee-Ai A, Chaiyaso T. Green and chemical-free process of enzymatic xylooligosaccharide production from corncob: Enhancement of the yields using a strategy of lignocellulosic destructuration by ultra-high pressure pretreatment. BIORESOURCE TECHNOLOGY 2017; 241:537-544. [PMID: 28601771 DOI: 10.1016/j.biortech.2017.05.193] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 05/28/2017] [Accepted: 05/29/2017] [Indexed: 06/07/2023]
Abstract
In this study, the pressures at 50-500MPa were evaluated at different time to pretreat and further enzyme hydrolysis. The ultra-high pressure (UHP) pretreatment at 100MPa for 10min led to improved accessibility of enzyme for conversion of xylan to xylooligosaccharide (XOS). The maximum XOS yield of 35.6mg/g substrate was achieved and firstly reported at 10% (w/v) of substrate, 100U of endo-xylanase/g corncobs and incubation time of 18h. The enzymatic hydrolysis efficiency was increased by 180.3% and released a high amount of xylobiose. The UHP pretreatment relatively did not affect to the composition of corncob, but decreased 34.3% of lignin. Interestingly, antioxidant activities of XOS using UHP pretreatment were higher than untreated corncob. The UHP pretreatment improved lignocellulosic destructuration and XOS yields in a shorter time without the need of chemicals, implying that UHP could be an effective pretreatment of biomass with a chemical-free process.
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Affiliation(s)
- Phisit Seesuriyachan
- Faculty of Agro-Industry, Chiang Mai University, 155 Moo 2, Mae Hia, Mueang Chiang Mai, Chiang Mai 50100, Thailand.
| | - Arthitaya Kawee-Ai
- Faculty of Agro-Industry, Chiang Mai University, 155 Moo 2, Mae Hia, Mueang Chiang Mai, Chiang Mai 50100, Thailand
| | - Thanongsak Chaiyaso
- Faculty of Agro-Industry, Chiang Mai University, 155 Moo 2, Mae Hia, Mueang Chiang Mai, Chiang Mai 50100, Thailand
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174
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Huang C, Lai C, Wu X, Huang Y, He J, Huang C, Li X, Yong Q. An integrated process to produce bio-ethanol and xylooligosaccharides rich in xylobiose and xylotriose from high ash content waste wheat straw. BIORESOURCE TECHNOLOGY 2017; 241:228-235. [PMID: 28570888 DOI: 10.1016/j.biortech.2017.05.109] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 05/16/2017] [Accepted: 05/17/2017] [Indexed: 06/07/2023]
Abstract
A bio-refinery process of wheat straw pulping solid residue (waste wheat straw, WWS) was established by combining prewashing and liquid hot water pretreatment (LHWP). The results showed that employing a prewashing step prior to the LHWP remarkably improved enzymatic glucose yields from 39.7% to 76.6%. Moreover, after 96h simultaneous saccharification and fermentation (SSF), identical ethanol yields of 0.41g/g-cellulose were obtained despite varied solid loadings (5-30%). Beyond ethanol, enzymatic post-hydrolysis of the prehydrolyzate effectively increased xylobiose and xylotriose yields from 15mg/g-WWS and 14mg/g-WWS to 53mg/g-WWS and 20mg/g-WWS, respectively. For mass balance, about 10.9tons raw WWS will be consumed to produce 1ton ethanol, in addition to producing 614.8kg xylooligosaccharides (XOS) containing 334.3kg xylobiose and 124.8kg xylotriose. The results demonstrated that the integrated process for the WWS bio-refinery is promising, based on value-adding co-production in addition to robust ethanol yields.
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Affiliation(s)
- Chen Huang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Chenhuan Lai
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Xinxing Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Yang Huang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Juan He
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Caoxing Huang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Xin Li
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Qiang Yong
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China.
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175
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Abstract
The many advances in glycoscience have more and more brought to light the crucial role of glycosides and glycoconjugates in biological processes. Their major influence on the functionality and stability of peptides, cell recognition, health and immunity and many other processes throughout biology has increased the demand for simple synthetic methods allowing the defined syntheses of target glycosides. Additional interest in glycoside synthesis has arisen with the prospect of producing sustainable materials from these abundant polymers. Enzymatic synthesis has proven itself to be a promising alternative to the laborious chemical synthesis of glycosides by avoiding the necessity of numerous protecting group strategies. Among the biocatalytic strategies, glycosynthases, genetically engineered glycosidases void of hydrolytic activity, have gained much interest in recent years, enabling not only the selective synthesis of small glycosides and glycoconjugates, but also the production of highly functionalized polysaccharides. This review provides a detailed overview over the glycosylation possibilities of the variety of glycosynthases produced until now, focusing on the transfer of the most common glucosyl-, galactosyl-, xylosyl-, mannosyl-, fucosyl-residues and of whole glycan blocks by the different glycosynthase enzyme variants.
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Affiliation(s)
- Marc R Hayes
- Institut für Bioorganische Chemie, Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich, 52426 Jülich, Germany.
| | - Jörg Pietruszka
- Institut für Bioorganische Chemie, Heinrich-Heine-Universität Düsseldorf im Forschungszentrum Jülich, 52426 Jülich, Germany.
- Forschungszentrum Jülich, IBG-1: Biotechnology, 52426 Jülich, Germany.
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176
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High copy and stable expression of the xylanase XynHB in Saccharomyces cerevisiae by rDNA-mediated integration. Sci Rep 2017; 7:8747. [PMID: 28821784 PMCID: PMC5562786 DOI: 10.1038/s41598-017-08647-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 07/17/2017] [Indexed: 01/26/2023] Open
Abstract
Xylanase is a widely-used additive in baking industry for enhancing dough and bread quality. Several xylanases used in baking industry were expressed in different systems, but their expression in antibiotic free vector system is highly essential and safe. In the present study, an alternative rDNA-mediated technology was developed to increase the copy number of target gene by integrating it into Saccharomyces cerevisiae genome. A xylanase-encoding gene xynHB from Bacillus sp. was cloned into pHBM367H and integrated into S. cerevisiae genome through rDNA-mediated recombination. Exogenous XynHB expressed by recombinant S. cerevisiae strain A13 exhibited higher degradation activity towards xylan than other transformants. The real-time PCR analysis on A13 genome revealed the presence of 13.64 copies of xynHB gene. Though no antibiotics have been used, the genetic stability and the xylanase activity of xynHB remained stable up to 1,011 generations of cultivation. S. cerevisiae strain A13 expressing xylanase reduced the required kneading time and increased the height and diameter of the dough size, which would be safe and effective in baking industry as no antibiotics-resistance risk. The new effective rDNA-mediated technology without using antibiotics here provides a way to clone other food related industrial enzymes for applications.
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177
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Kim DY, Lee SH, Lee MJ, Cho HY, Lee JS, Rhee YH, Shin DH, Son KH, Park HY. Genetic and functional characterization of a novel GH10 endo-β- 1,4-xylanase with a ricin-type β-trefoil domain-like domain from Luteimicrobium xylanilyticum HY-24. Int J Biol Macromol 2017; 106:620-628. [PMID: 28813686 DOI: 10.1016/j.ijbiomac.2017.08.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/09/2017] [Accepted: 08/09/2017] [Indexed: 01/08/2023]
Abstract
The gene (1488-bp) encoding a novel GH10 endo-β-1,4-xylanase (XylM) consisting of an N-terminal catalytic GH10 domain and a C-terminal ricin-type β-trefoil lectin domain-like (RICIN) domain was identified from Luteimicrobium xylanilyticum HY-24. The GH10 domain of XylM was 72% identical to that of Micromonospora lupini endo-β-1,4-xylanase and the RICIN domain was 67% identical to that of Actinospica robiniae hypothetical protein. The recombinant enzyme (rXylM: 49kDa) exhibited maximum activity toward beechwood xylan at 65°C and pH 6.0, while the optimum temperature and pH of its C-terminal truncated mutant (rXylM△RICIN: 35kDa) were 45°C and 5.0, respectively. After pre-incubation of 1h at 60°C, rXylM retained over 80% of its initial activity, but the thermostability of rXylM△RICIN was sharply decreased at temperatures exceeding 40°C. The specific activity (254.1Umg-1) of rXylM toward oat spelts xylan was 3.4-fold higher than that (74.8Umg-1) of rXylM△RICIN when the same substrate was used. rXylM displayed superior binding capacities to lignin and insoluble polysaccharides compared to rXylM△RICIN. Enzymatic hydrolysis of β-1,4-d-xylooligosaccharides (X3-X6) and birchwood xylan yielded X3 as the major product. The results suggest that the RICIN domain in XylM might play an important role in substrate-binding and biocatalysis.
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Affiliation(s)
- Do Young Kim
- Industrial Bio-Materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Sun Hwa Lee
- Industrial Bio-Materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Min Ji Lee
- Industrial Bio-Materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Han-Young Cho
- Industrial Bio-Materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Jong Suk Lee
- Gyeonggi Bio-Center, Gyeonggi Institute of Science & Technology Promotion, Suwon 16229, Republic of Korea
| | - Young Ha Rhee
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Dong-Ha Shin
- Insect Biotech Co. Ltd., Daejeon 34054, Republic of Korea
| | - Kwang-Hee Son
- Industrial Bio-Materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea.
| | - Ho-Yong Park
- Industrial Bio-Materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea.
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178
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Sukri SSM, Mimi Sakinah AM. Production of High Commercial Value Xylooligosaccharides from Meranti Wood Sawdust Using Immobilised Xylanase. Appl Biochem Biotechnol 2017; 184:278-290. [PMID: 28676961 DOI: 10.1007/s12010-017-2542-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/18/2017] [Indexed: 01/23/2023]
Abstract
The present study explores the utilisation of a new raw material from lignocellulose biomass, Meranti wood sawdust (MWS) for high commercial value xylooligosaccharides (XOS) production using immobilised xylanase. The xylanase was immobilised by a combination of entrapment and covalent binding techniques. The hemicellulosic xylan from MWS was extracted using a standard chlorite delignification method. The production of total and derivatives of XOS from the degradation of the hemicellulosic xylan of MWS were compared to the production from the commercial xylan from Beechwood. The utilisation of the extracted xylan from MWS yielded 0.36 mg/mL of total XOS after 60 h of hydrolysis. During the hydrolysis reaction, the immobilised xylanase released a lower degree of polymerisation (DP) of XOS, mainly X2 and X3, which were the major products of xylan degradation by xylanase enzymes. The production of XOS with a lower DP from MWS demonstrated the biotechnological potential of the MWS in the future. The XOS production retained about 70% of its initial XOS production during the second cycle. This is also the first report on the utilisation of MWS wastes in enzymatic hydrolysis using immobilised xylanase for XOS production.
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Affiliation(s)
- Siti Sabrina Mohd Sukri
- Faculty of Engineering Technology, Universiti Malaysia Pahang, 26300, Kuantan, Pahang, Malaysia
| | - A M Mimi Sakinah
- Faculty of Engineering Technology, Universiti Malaysia Pahang, 26300, Kuantan, Pahang, Malaysia.
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179
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Rajagopalan G, Shanmugavelu K, Yang KL. Production of prebiotic-xylooligosaccharides from alkali pretreated mahogany and mango wood sawdust by using purified xylanase of Clostridium strain BOH3. Carbohydr Polym 2017; 167:158-166. [DOI: 10.1016/j.carbpol.2017.03.021] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 03/07/2017] [Accepted: 03/07/2017] [Indexed: 11/26/2022]
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180
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Morgan NK, Wallace A, Bedford MR, Choct M. Efficiency of xylanases from families 10 and 11 in production of xylo -oligosaccharides from wheat arabinoxylans. Carbohydr Polym 2017; 167:290-296. [DOI: 10.1016/j.carbpol.2017.03.063] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/23/2017] [Accepted: 03/18/2017] [Indexed: 10/19/2022]
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181
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Huang D, Liu J, Qi Y, Yang K, Xu Y, Feng L. Synergistic hydrolysis of xylan using novel xylanases, β-xylosidases, and an α-L-arabinofuranosidase from Geobacillus thermodenitrificans NG80-2. Appl Microbiol Biotechnol 2017; 101:6023-6037. [PMID: 28616644 DOI: 10.1007/s00253-017-8341-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 03/29/2017] [Accepted: 05/08/2017] [Indexed: 01/01/2023]
Abstract
Lignocellulosic biomass from various types of wood has become a renewable resource for production of biofuels and biobased chemicals. Because xylan is the major component of wood hemicelluloses, highly efficient enzymes to enhance xylan hydrolysis can improve the use of lignocellulosic biomass. In this study, a xylanolytic gene cluster was identified from the crude oil-degrading thermophilic strain Geobacillus thermodenitrificans NG80-2. The enzymes involved in xylan hydrolysis, which include two xylanases (XynA1, XynA2), three β-xylosidases (XynB1, XynB2, XynB3), and one α-L-arabinofuranosidase (AbfA), have many unique features, such as high pH tolerance, high thermostability, and a broad substrate range. The three β-xylosidases were highly resistant to inhibition by product (xylose) accumulation. Moreover, the combination of xylanase, β-xylosidase, and α-L-arabinofuranosidase exhibited the largest synergistic action on xylan degradation (XynA2, XynB1, and AbfA on oat spelt or beechwood xylan; XynA2, XynB3, and AbfA on birchwood xylan). We have demonstrated that the proposed enzymatic cocktail almost completely converts complex xylan to xylose and arabinofuranose and has great potential for use in the conversion of plant biomass into biofuels and biochemicals.
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Affiliation(s)
- Di Huang
- TEDA Institute of Biological Sciences and Biotechnology, Tianjin Economic-Technological Development Area (TEDA), Nankai University, 23 Hongda Street, Tianjin, 300457, People's Republic of China.
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin, 300071, People's Republic of China.
- Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin, 300457, People's Republic of China.
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, People's Republic of China.
| | - Jia Liu
- TEDA Institute of Biological Sciences and Biotechnology, Tianjin Economic-Technological Development Area (TEDA), Nankai University, 23 Hongda Street, Tianjin, 300457, People's Republic of China
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin, 300071, People's Republic of China
| | - Yanfei Qi
- TEDA Institute of Biological Sciences and Biotechnology, Tianjin Economic-Technological Development Area (TEDA), Nankai University, 23 Hongda Street, Tianjin, 300457, People's Republic of China
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin, 300071, People's Republic of China
| | - Kexin Yang
- TEDA Institute of Biological Sciences and Biotechnology, Tianjin Economic-Technological Development Area (TEDA), Nankai University, 23 Hongda Street, Tianjin, 300457, People's Republic of China
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin, 300071, People's Republic of China
| | - Yingying Xu
- TEDA Institute of Biological Sciences and Biotechnology, Tianjin Economic-Technological Development Area (TEDA), Nankai University, 23 Hongda Street, Tianjin, 300457, People's Republic of China
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin, 300071, People's Republic of China
| | - Lu Feng
- TEDA Institute of Biological Sciences and Biotechnology, Tianjin Economic-Technological Development Area (TEDA), Nankai University, 23 Hongda Street, Tianjin, 300457, People's Republic of China.
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Tianjin, 300071, People's Republic of China.
- Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin, 300457, People's Republic of China.
- SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, People's Republic of China.
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182
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Kong L, Zhao XH. Yields of three acids during simulated fermentation of inulin and xylo-oligosaccharides enhanced by six exogenous strains. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2017. [DOI: 10.1007/s11694-016-9439-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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183
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Wang S, Zhang P, Kong X, Xie S, Li Q, Li Z, Zhou Z. Delicate changes of bioapatite mineral in pig femur with addition of dietary xylooligosaccharide: Evidences from Raman spectroscopy and ICP. Anim Sci J 2017; 88:1820-1826. [PMID: 28557169 DOI: 10.1111/asj.12837] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 04/03/2017] [Indexed: 12/12/2022]
Abstract
Bone mineral is strongly correlated with performance and health of animal bodies. The mineral bioapatite (BAp) is the dominant component in bone tissue. This study investigated mineralogical changes of BAp in pig femur by Raman spectroscopy and inductively coupled plasma optical emission spectrometry (ICP-OES). The pigs had been raised with various xylooligosaccharide (XOS) additions at two stages of growth (growing and fattening periods). The results show that XOS can decrease the degree of carbonate substitution for PO4 in BAp mineral and improve the mineral's crystallinity. ICP data is consistent with the Raman results, that is the low solubility of bone BAp for pigs fed with XOS. Additionally, the effect of XOS is much better in the growing period (before 65 kg) than in the fattening period (after 65 kg). Moreover, the high addition of XOS (within the range of 0.1-0.5 g/kg) would be appropriate to improve the crystallinity of bone BAp. This study sheds light on applying Raman and ICP techniques to investigate the delicate changes of mineral in pig bones undergoing different managements.
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Affiliation(s)
- Shujie Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Penghao Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Xiangfeng Kong
- Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - Shengda Xie
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Qiao Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Zhen Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Zhenlei Zhou
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
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184
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Park HW, Kim MJ, Seo S, Yoo S, Hong JH. Relative sweetness and sweetness quality of Xylobiose. Food Sci Biotechnol 2017; 26:689-696. [PMID: 30263593 PMCID: PMC6049597 DOI: 10.1007/s10068-017-0109-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/09/2017] [Accepted: 03/10/2017] [Indexed: 11/27/2022] Open
Abstract
Xylobiose (XB), a xylose dimer, is a low-calorie sweetener with prebiotic activity. Unlike its well-defined biosynthesis and production methods, its sensory characteristics have not been well investigated. This study aims to identify the relative sweetness and sensory profile of XB. XB was prepared as an aqueous solution, and its relative sweetness (RS) compared to 5% sucrose was determined using the 2-alternative forced choice method. The sensory profile was identified by 10 trained panelists using descriptive analysis. The RS of XB was determined to be 0.34. XB was characterized by its yellowness, corn aroma and flavor, and its nurungji (scorched rice) candy flavor. The persistence of sweetness of XB was similar to that of sucrose, but its onset of sweetness was slower. When XB was mixed with sucrose at a ratio of 7:93, the mixture exhibited a similar sensory quality to that of sucrose, thereby making it a useful sucrose complement.
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Affiliation(s)
- Hye-Won Park
- Department of Foods and Nutrition, Kookmin University, Seoul, 02707 Korea
| | - Min-Ji Kim
- Department of Foods and Nutrition, Kookmin University, Seoul, 02707 Korea
| | | | - Sangho Yoo
- Department of Food Science and Technology, and Carbohydrate Bioproduct Research Center, Sejong University, Seoul, 05006 Korea
| | - Jae-Hee Hong
- Department of Foods and Nutrition, Kookmin University, Seoul, 02707 Korea
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185
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Martins de Oliveira S, Moreno-Perez S, Romero-Fernández M, Fernandez-Lorente G, Rocha-Martin J, Guisan JM. Immobilization and stabilization of commercial β-1,4-endoxylanase Depol™ 333MDP by multipoint covalent attachment for xylan hydrolysis: Production of prebiotics (xylo-oligosaccharides). BIOCATAL BIOTRANSFOR 2017. [DOI: 10.1080/10242422.2017.1308497] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sandro Martins de Oliveira
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Madrid, Spain
| | - Sonia Moreno-Perez
- Pharmacy and Biotechnology Department, School of Biomedical Sciences, Universidad Europea, Madrid, Spain
| | - Maria Romero-Fernández
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Madrid, Spain
| | - Gloria Fernandez-Lorente
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Madrid, Spain
- Department of Biotechnology and Microbiology (MICRO-BIO), Institute of Food Science Research (CIAL) CSIC – Campus UAM, Madrid, Spain
| | - Javier Rocha-Martin
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Madrid, Spain
| | - Jose M. Guisan
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Madrid, Spain
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186
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Cantu-Jungles TM, Iacomini M, Cipriani TR, Cordeiro LM. Isolation and characterization of a xylan with industrial and biomedical applications from edible açaí berries (Euterpe oleraceae). Food Chem 2017; 221:1595-1597. [DOI: 10.1016/j.foodchem.2016.10.133] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 08/22/2016] [Accepted: 10/28/2016] [Indexed: 11/27/2022]
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187
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Li Q, Sun B, Jia H, Hou J, Yang R, Xiong K, Xu Y, Li X. Engineering a xylanase from Streptomyce rochei L10904 by mutation to improve its catalytic characteristics. Int J Biol Macromol 2017; 101:366-372. [PMID: 28356235 DOI: 10.1016/j.ijbiomac.2017.03.135] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/21/2017] [Accepted: 03/24/2017] [Indexed: 11/18/2022]
Abstract
Protein engineering was performed by N-terminal region replacement and site-directed mutagenesis in the cord of a xylanase (Srxyn) from Streptomyce rochei L10904 to improve its catalytic characteristics. Three mutants SrxynF, SrxynM and SrxynFM displayed 2.1-fold, 3.2-fold and 5.3-fold higher specific activities than that of Srxyn, respectively. Moreover, all of the mutants showed greater substrate affinity and kcat/Km than the native Srxyn. In addition, the enzymes showed improved hydrolysis characteristics, of which the most noteworthy is the enhanced ability of producing xylobiose (X2) and xylotriose (X3) from polymeric substrates. The engineered xylanases have greater potential for applications in oligosaccharide preparation industry.
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Affiliation(s)
- Qin Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, China; School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China
| | - Baoguo Sun
- School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China; Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Huiyong Jia
- Department of Biology, Emory University, 1510 Clifton Road, Atlanta, GA 30322, USA
| | - Jie Hou
- School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China
| | - Ran Yang
- School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China
| | - Ke Xiong
- School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China
| | - Youqiang Xu
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing 100048, China; School of Food and Chemical Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, China.
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188
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Improving special hydrolysis characterization into Talaromyces thermophilus F1208 xylanase by engineering of N-terminal extension and site-directed mutagenesis in C-terminal. Int J Biol Macromol 2017; 96:451-458. [DOI: 10.1016/j.ijbiomac.2016.12.050] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 12/16/2016] [Accepted: 12/17/2016] [Indexed: 11/22/2022]
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189
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Park C, Choi J, Kyung M, Seo S, Jo SE, Lee K, Kim P, Wang NHL, Jung S, Mun S. Application of Bacillus pumilus β-xylosidase reaction and simulated moving bed purification to efficient production of high-purity xylobiose from xylose. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.12.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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190
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de Figueiredo FC, Carvalho AFA, Brienzo M, Campioni TS, de Oliva-Neto P. Chemical input reduction in the arabinoxylan and lignocellulose alkaline extraction and xylooligosaccharides production. BIORESOURCE TECHNOLOGY 2017; 228:164-170. [PMID: 28063358 DOI: 10.1016/j.biortech.2016.12.097] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/22/2016] [Accepted: 12/23/2016] [Indexed: 05/26/2023]
Abstract
Lignocellulosic material breakdown by hydrolysis is an important step to open new perspectives for bioenergy and special foods production like prebiotic xylooligosaccharides. Improvement of lignocellulose and arabinoxylan alkaline extraction from sugarcane bagasse and enzymatic hydrolysis were performed. Treatments 1 (10% KOH at 70°C), 3 (5% KOH at 121°C) and ZD method (24% KOH at 35°C) showed solid lignocellulose recovery of respectively 75.2%, 74.2% and 73%. A range of 24.8-27% extracted material with high arabinoxylan content (72.1-76.3%) was obtained with these treatments. Treatment 1 and 3 exhibited great KOH reduction in the method reaction, 54.1% and 76.2%, respectively. Likewise, in treatment 3 there was a decrease in ethanol consumption (40.9%) when compared to ZD method. The extracted arabinoxylan showed susceptibility to enzymatic hydrolysis with high solid loading (7%) since Trichoderma reesei xylanases were advantageous for xylose production (54.9%), while Aspergillus fumigatus xylanases achieved better XOS production (27.1%).
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Affiliation(s)
- Franciane Cristina de Figueiredo
- Departament of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (UNESP), Avenida 24 A, 1515, ZIP Code 13506-900 Rio Claro, SP, Brazil; Laboratory of Development of Bioprocesses, Bioenergy Research Institute (IPBEN), School of Sciences and Languages, São Paulo State University (UNESP), Avenida Dom Antonio, 2100, ZIP Code 19806-900 Assis, SP, Brazil.
| | - Ana Flavia Azevedo Carvalho
- Laboratory of Development of Bioprocesses, Bioenergy Research Institute (IPBEN), School of Sciences and Languages, São Paulo State University (UNESP), Avenida Dom Antonio, 2100, ZIP Code 19806-900 Assis, SP, Brazil
| | - Michel Brienzo
- Laboratory of Biomass Characterization, Bioenergy Research Institute (IPBEN), São Paulo State University (UNESP), Avenida 24 A, 1515, ZIP Code 13506-900 Rio Claro, SP, Brazil
| | - Tania Sila Campioni
- Laboratory of Development of Bioprocesses, Bioenergy Research Institute (IPBEN), School of Sciences and Languages, São Paulo State University (UNESP), Avenida Dom Antonio, 2100, ZIP Code 19806-900 Assis, SP, Brazil
| | - Pedro de Oliva-Neto
- Laboratory of Development of Bioprocesses, Bioenergy Research Institute (IPBEN), School of Sciences and Languages, São Paulo State University (UNESP), Avenida Dom Antonio, 2100, ZIP Code 19806-900 Assis, SP, Brazil
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191
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Bioprospecting of Xylanolytic Fungi Isolated from Degraded Corn Cobs for Xylooligosaccharides (XOs) Production. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2016. [DOI: 10.22207/jpam.10.4.27] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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192
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Abstract
Prebiotics contribute to the well-being of their host by altering the composition of the gut microbiota. Discovering new prebiotics is a challenging and arduous task due to strict inclusion criteria; thus, highly limited numbers of prebiotic candidates have been identified. Notably, the large numbers of published studies may contain substantial information attached to various features of known prebiotics that can be used to predict new candidates. In this paper, we propose a medical subject headings (MeSH)-based text mining method for identifying new prebiotics with structured texts obtained from PubMed. We defined an optimal feature set for prebiotics prediction using a systematic feature-ranking algorithm with which a variety of carbohydrates can be accurately classified into different clusters in accordance with their chemical and biological attributes. The optimal feature set was used to separate positive prebiotics from other carbohydrates, and a cross-validation procedure was employed to assess the prediction accuracy of the model. Our method achieved a specificity of 0.876 and a sensitivity of 0.838. Finally, we identified a high-confidence list of candidates of prebiotics that are strongly supported by the literature. Our study demonstrates that text mining from high-volume biomedical literature is a promising approach in searching for new prebiotics.
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193
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Zhang H, Brace EC, Engelberth AS. Selection of a nonaqueous two-phase solvent system for fractionation of xylo-oligosaccharide prebiotics using a conductor-like screening model for real solvents. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1230552] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- He Zhang
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, USA
- Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Emma C. Brace
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, USA
- Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Abigail S. Engelberth
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, USA
- Laboratory of Renewable Resources Engineering, Purdue University, West Lafayette, Indiana, USA
- Environmental and Ecological Engineering, Purdue University, West Lafayette, Indiana, USA
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194
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Preparation of xylooligosaccharides from xylan by controlled acid hydrolysis and fast protein liquid chromatography coupled with refractive index detection. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.06.051] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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195
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Comparison of fungal carbohydrate esterases of family CE16 on artificial and natural substrates. J Biotechnol 2016; 233:228-36. [DOI: 10.1016/j.jbiotec.2016.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 06/28/2016] [Accepted: 07/06/2016] [Indexed: 01/04/2023]
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196
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Choi JH, Park H, Park C, Wang NHL, Mun S. Highly efficient recovery of xylobiose from xylooligosaccharides using a simulated moving bed method. J Chromatogr A 2016; 1465:143-54. [PMID: 27599800 DOI: 10.1016/j.chroma.2016.08.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/25/2016] [Accepted: 08/27/2016] [Indexed: 11/19/2022]
Abstract
Xylobiose (X2), which is currently available from xylooligosaccharides (XOS), has been reported to have outstanding prebiotic function and to be highly suitable for application in food industries. This has sparked an interest in the economical production of X2 of high purity (> 99%) in food and prebiotic industries. To address such issue, we developed a highly-efficient chromatographic method for the recovery of X2 from XOS with high purity and high recovery. As a first step for this work, an eligible adsorbent for a large-scale separation between X2 and other XOS components was selected. For the selected adsorbent, a single-column experiment was carried out to determine the intrinsic parameters of all the XOS components, which were then used in the optimal design of the continuous X2-recovery process based on a simulated moving bed (SMB) chromatographic method. Finally, the performance of the designed X2-recovery SMB process was verified by the relevant SMB experiments, which confirmed that the developed process in this study could recover X2 from XOS with the purity of 99.5% and the recovery of 92.3% on a continuous-separation mode. The results of this study will be useful in enabling the economical production of high-purity X2 on a large scale.
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Affiliation(s)
- Jae-Hwan Choi
- Department of Chemical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, 04763, South Korea
| | - Hangil Park
- Department of Chemical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, 04763, South Korea
| | - Chanhun Park
- Department of Chemical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, 04763, South Korea
| | - Nien-Hwa Linda Wang
- School of Chemical Engineering, 480 Stadium Mall Drive, Purdue University, West Lafayette, IN 47907-2100, USA
| | - Sungyong Mun
- Department of Chemical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, 04763, South Korea.
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197
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Prebiotic Effects of Xylooligosaccharides on the Improvement of Microbiota Balance in Human Subjects. Gastroenterol Res Pract 2016; 2016:5789232. [PMID: 27651791 PMCID: PMC5019895 DOI: 10.1155/2016/5789232] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 07/05/2016] [Accepted: 08/09/2016] [Indexed: 12/25/2022] Open
Abstract
It has been indicated that probiotics can be nourished by consuming prebiotics in order to function more efficiently, allowing the bacteria to stay within a healthy balance. In this study, we investigated the effects of xylooligosaccharides- (XOS-) enriched rice porridge consumption on the ecosystem in the intestinal tract of human subjects. Twenty healthy subjects participated in this 6-week trial, in which 10 subjects received XOS-enriched rice porridge while the others received placebo rice porridge. Fecal samples were collected at the end of weeks 0, 1, 3, 4, 6, and 7 for microorganism examination. The results showed that 6-week daily ingestion of the XOS-enriched rice porridge induced significant increases in fecal bacterial counts of Lactobacillus spp. and Bifidobacterium spp., as well as decreases in Clostridium perfringens without changing the total anaerobic bacterial counts, compared to that of placebo rice porridge. However, fluctuations in the counts of coliforms were observed in both groups during the 6-week intervention. In conclusion, the intestinal microbiota balance was improved after daily consumption of 150 g of rice porridge containing XOS for 6 weeks, demonstrating the prebiotic potential of XOS incorporated into foods. This also indicates the effectiveness of XOS as a functional ingredient in relation to its role as a prebiotic compound.
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198
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Helianti I, Ulfah M, Nurhayati N, Suhendar D, Finalissari AK, Wardani AK. Production of Xylanase by Recombinant Bacillus subtilis DB104 Cultivated in Agroindustrial Waste Medium. HAYATI JOURNAL OF BIOSCIENCES 2016. [DOI: 10.1016/j.hjb.2016.07.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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199
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Kosciow K, Domin C, Schweiger P, Deppenmeier U. Extracellular targeting of an active endoxylanase by a TolB negative mutant of Gluconobacter oxydans. ACTA ACUST UNITED AC 2016; 43:989-99. [DOI: 10.1007/s10295-016-1770-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 03/26/2016] [Indexed: 01/28/2023]
Abstract
Abstract
Gluconobacter (G.) oxydans strains have great industrial potential due to their ability to incompletely oxidize a wide range of carbohydrates. But there is one major limitation preventing their full production potential. Hydrolysis of polysaccharides is not possible because extracellular hydrolases are not encoded in the genome of Gluconobacter species. Therefore, as a first step for the generation of exoenzyme producing G. oxydans, a leaky outer membrane mutant was created by deleting the TolB encoding gene gox1687. As a second step the xynA gene encoding an endo-1,4-β-xylanase from Bacillus subtilis was expressed in G. oxydans ΔtolB. More than 70 % of the total XynA activity (0.91 mmol h−1 l culture−1) was detected in the culture supernatant of the TolB mutant and only 10 % of endoxylanase activity was observed in the supernatant of G. oxydans xynA. These results showed that a G. oxydans strain with an increased substrate spectrum that is able to use the renewable polysaccharide xylan as a substrate to produce the prebiotic compounds xylobiose and xylooligosaccharides was generated. This is the first report about the combination of the process of incomplete oxidation with the degradation of renewable organic materials from plants for the production of value-added products.
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Affiliation(s)
- Konrad Kosciow
- grid.10388.32 0000000122403300 Institute of Microbiology and Biotechnology University of Bonn Meckenheimer Allee 168 53115 Bonn Germany
| | - Claudia Domin
- grid.10388.32 0000000122403300 Institute of Microbiology and Biotechnology University of Bonn Meckenheimer Allee 168 53115 Bonn Germany
| | - Paul Schweiger
- grid.260126.1 0000000107458995 Biology Department Missouri State University 901 S. National Ave 65897 Springfield MO USA
| | - Uwe Deppenmeier
- grid.10388.32 0000000122403300 Institute of Microbiology and Biotechnology University of Bonn Meckenheimer Allee 168 53115 Bonn Germany
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Udomrati S, Khalid N, Gohtani S, Nakajima M, Neves MA, Uemura K, Kobayashi I. Effect of esterified oligosaccharides on the formation and stability of oil-in-water emulsions. Carbohydr Polym 2016; 143:44-50. [PMID: 27083342 DOI: 10.1016/j.carbpol.2016.02.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/29/2016] [Accepted: 02/01/2016] [Indexed: 11/25/2022]
Abstract
Hydrophobically modified oligosaccharides were prepared by an enzyme-catalyzed reaction of maltodextrin/xylo-oligosaccharide and palmitic acid. Maltodextrin with dextrose equivalent (DE) of 16 palmitate (DE16_P) and 9 palmitate (DE9_P), as well as xylo-oligosaccharide palmitate (Xylo_P), were used. The effect of the concentration (10-50% (w/w)) and type of esterified oligosaccharides on the Sauter mean diameter and droplet-size distribution, the rate of coalescence (Kc), and the creaming properties of O/W emulsions were investigated. Esterified oligosaccharides (EO) adsorbed to the surface of the oil droplets. EO formed polydisperse O/W emulsions with particle sizes between 12 and 70 μm, depended on concentration of EO. The Sauter mean diameter, Kc, and the creaming index decreased markedly, with increasing concentration of EO. The type of ester minimally affected the Sauter mean diameter at each ester concentration. DE9_P inhibited coalescence and creaming more efficiently than other EO, mainly due to the higher viscosity of the continuous phase.
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Affiliation(s)
- Sunsanee Udomrati
- Food Engineering Division, National Food Research Institute, NARO, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan; Institute of Food Research and Product Development, Kasetsart University, 50 Chatuchak, Bangkok 10900, Thailand
| | - Nauman Khalid
- Food Engineering Division, National Food Research Institute, NARO, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan; Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan; The Alliance for Research on North Africa, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | - Shoichi Gohtani
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, 2393 Miki, Kagawa 761-0795, Japan
| | - Mitsutoshi Nakajima
- Food Engineering Division, National Food Research Institute, NARO, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan; Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan; The Alliance for Research on North Africa, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | - Marcos A Neves
- Food Engineering Division, National Food Research Institute, NARO, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan; Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan; The Alliance for Research on North Africa, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | - Kunihiko Uemura
- Food Engineering Division, National Food Research Institute, NARO, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan; The Alliance for Research on North Africa, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan
| | - Isao Kobayashi
- Food Engineering Division, National Food Research Institute, NARO, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan; The Alliance for Research on North Africa, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8572, Japan.
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