1
|
Singh YR, Thakur A, Fontes CMGA, Goyal A. A novel thermophilic recombinant obligate xylobiohydrolase (AcGH30A) from Acetivibrio clariflavus orchestrates the deconstruction of xylan polysaccharides. Carbohydr Polym 2024; 340:122295. [PMID: 38858006 DOI: 10.1016/j.carbpol.2024.122295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/15/2024] [Accepted: 05/18/2024] [Indexed: 06/12/2024]
Abstract
GH30 xylobiohydrolases, an expanding enzyme category, need deeper insights for optimal use. The primary aim of this study was to characterize a new xylobiohydrolase, AcGH30A of GH30 family from Acetivibrio clariflavus. The gene encoding AcGH30A was cloned using pET28a(+) vector and expressed in E. coli BL21(DE3) cells. AcGH30A was purified by immobilized metal-ion affinity chromatography. SDS-PAGE analysis of AcGH30A showed molecular mass of ~58 kDa. AcGH30A showed optimum temperature 80 °C and optimum pH 7.0. AcGH30A was stable (maintaining >80 % of control activity) in pH range, 4-7 and temperature range, 30 °C -70 °C when incubated for 90 min. AcGH30A displayed melting temperature, 72 °C and half-life, 21 days at 4 °C. The enzyme activity of AcGH30A was enhanced by 10 mM Ca2+ and Mg2+ ions by 25 % and 21 %, respectively, whereas 10 mM Co2+, Zn2+, Fe2+, and Cu2+ ions significantly reduced it. AcGH30A showed activity against various xylan polysaccharides displaying highest Vmax, 139 U.mg-1 and KM, 0.71 mg.ml-1 against 4-O-methyl glucuronoxylan under optimum conditions. TLC, HPLC and LC-MS analyses of AcGH30A hydrolyzed products from xylan substrates revealed the release of sole product, xylobiose, confirming it as an obligate xylobiohydrolase. AcGH30A being a highly thermostable enzyme can be potentially utlilized in various biotechnological applications.
Collapse
Affiliation(s)
- Yumnam Robinson Singh
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology, Guwahati, Guwahati, Assam 781039, India
| | - Abhijeet Thakur
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology, Guwahati, Guwahati, Assam 781039, India
| | - Carlos M G A Fontes
- NZYTech - Genes & Enzymes, Estrada do Paço do Lumiar, Campus do Lumiar, Edifício E - R/C, 1649-038 Lisbon, Portugal; CIISA - Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Arun Goyal
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology, Guwahati, Guwahati, Assam 781039, India.
| |
Collapse
|
2
|
Liao H, Feng B, Ying W, Zhang J. Efficient production of xylobiose and xylotriose from corncob by mixed acids and xylanase hydrolysis. BIORESOURCE TECHNOLOGY 2023; 387:129686. [PMID: 37595810 DOI: 10.1016/j.biortech.2023.129686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/20/2023]
Abstract
Propionic acid (PA) hydrolysis offers a potential pathway for industrial xylooligosaccharide (XOS) production owing to efficiency and simplicity of the process. However, the cost of XOS production needs to be reduced as PA is expensive. This work proposed a strategy of mixed acids hydrolysis, replacing 20% of PA with formic acid (FA), and combined with xylanase hydrolysis to reduce production costs and increase the production of XOS from corncob. The hydrolysis of corncob using mixed FA and PA in a mass ratio of 2:8 produced 61.8% XOS. Xylanase hydrolysis of corncob residue improved XOS yield to 73.1%. Among them, the X2 + X3 yield was as high as 50.6%. Economic evaluation showed that the combined process reduced the XOS production cost by 10.8% compared to PA hydrolysis. The strategy of using FA instead of 20% PA for hydrolysis and enzymatic hydrolysis, with high XOS and monosaccharide yields from corncob, has potential industrial promise.
Collapse
Affiliation(s)
- Hong Liao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
| | - Baojun Feng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
| | - Wenjun Ying
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China
| | - Junhua Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, China.
| |
Collapse
|
3
|
Kour S, Sharma N, N B, Kumar P, Soodan JS, Santos MVD, Son YO. Advances in Diagnostic Approaches and Therapeutic Management in Bovine Mastitis. Vet Sci 2023; 10:449. [PMID: 37505854 PMCID: PMC10384116 DOI: 10.3390/vetsci10070449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/30/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
Mastitis causes huge economic losses to dairy farmers worldwide, which largely negatively affects the quality and quantity of milk. Mastitis decreases overall milk production, degrades milk quality, increases milk losses because of milk being discarded, and increases overall production costs due to higher treatment and labour costs and premature culling. This review article discusses mastitis with respect to its clinical epidemiology, the pathogens involved, economic losses, and basic and advanced diagnostic tools that have been used in recent times to diagnose mastitis effectively. There is an increasing focus on the application of novel therapeutic approaches as an alternative to conventional antibiotic therapy because of the decreasing effectiveness of antibiotics, emergence of antibiotic-resistant bacteria, issue of antibiotic residues in the food chain, food safety issues, and environmental impacts. This article also discussed nanoparticles'/chitosan's roles in antibiotic-resistant strains and ethno-veterinary practices for mastitis treatment in dairy cattle.
Collapse
Affiliation(s)
- Savleen Kour
- Division of Veterinary Medicine, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, R.S. Pura, Jammu 181102, India
| | - Neelesh Sharma
- Division of Veterinary Medicine, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, R.S. Pura, Jammu 181102, India
| | - Balaji N
- Division of Veterinary Medicine, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, R.S. Pura, Jammu 181102, India
| | - Pavan Kumar
- Department of Livestock Products Technology, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004, India
| | - Jasvinder Singh Soodan
- Division of Veterinary Clinical Complex, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences & Technology of Jammu, R.S. Pura, Jammu 181102, India
| | - Marcos Veiga Dos Santos
- Department of Animal Sciences, School of Veterinary Medicine and Animal Sciences, University of São Paulo, Pirassununga 13635-900, São Paulo, Brazil
| | - Young-Ok Son
- Department of Animal Biotechnology, Faculty of Biotechnology, College of Applied Life Sciences and Interdisciplinary Graduate Program in Advanced Convergence Technology and Science, Jeju National University, Jeju 690756, Republic of Korea
| |
Collapse
|
4
|
Gavande PV, Goyal A. Molecular dynamics-based structural insights of the first putative endoglucanase, PsGH5A of glycoside hydrolase family 5 from Pseudopedobacter saltans. J Mol Model 2023; 29:186. [PMID: 37221261 DOI: 10.1007/s00894-023-05575-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/27/2023] [Indexed: 05/25/2023]
Abstract
CONTEXT The putative endoglucanase, PsGH5A, from Pseudopedobacter saltans of family GH5 contains a catalytic module, PsGH5 (β/α)8-TIM barrel), at N-terminal followed by a family 6 carbohydrate-binding module (CBM6, β-sandwich). Superposition of PsGH5A with PDB homologs revealed Glu220 and Glu318 as evolutionarily conserved and catalytic residues performing the hydrolysis through retaining-type mechanism, a canonical property of GH5 family. PsGH5A showed higher affinity for longer cellooligosaccharides, as long as cellodecaose with binding free energy (∆G) of - 13.72 kcal/mol upon the molecular docking, thereby indicating the endo-mode of hydrolysis. The radius of gyration, Rg (2.7 nm), and solvent accessible surface area, SASA (229.6 nm2), of PsGH5A-Cellotetraose complex were determined by MD simulation which was lower than that of PsGH5A (Rg, 2.8 nm, SASA, 267 nm2) demonstrating the compactness and affinity of PsGH5A with the cellulosic ligands. Cellulose compatibility of PsGH5A was further confirmed by MMPBSA and per-residue decomposition analysis, where notable ∆G of - 54.38 kcal/mol for PsGH5A-Cellotetraose complex was observed. Thus, PsGH5A could be potentially an efficient endoglucanase as it accommodated larger cellooligosaccharides at its active-site. PsGH5A is the first putative endoglucanase studied here from P. saltans which could be genome-mined for lignocellulosic biomass saccharification in the renewable energy sector. METHODS The 3-D structure of PsGH5A generated by AlphaFold2, RaptorX, SwissModel, Phyre2 and Robetta tool; YASARA was used for energy minimization of built models. UCLA SAVES-v6 was used for quality assessment of models. Molecular Docking was performed using SWISS-DOCK server and Chimera software. Molecular Dynamics simulations and MMPBSA analysis of PsGH5A and PsGH5A-Cellotetraose complex were performed on GROMACS 2019.6.
Collapse
Affiliation(s)
- Parmeshwar Vitthal Gavande
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - Arun Goyal
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
| |
Collapse
|
5
|
da Cruz Filho IJ, de Souza TP, dos Anjos Santos CÁ, de Morais Araújo MA, de Oliveira Moraes Miranda JF, de Oliveira Queirós ME, Filho DJNC, da Conceição Alves de Lima A, Marques DSC, do Carmo Alves de Lima M. Xylans extracted from branches and leaves of Protium puncticulatum: antioxidant, cytotoxic, immunomodulatory, anticoagulant, antitumor, prebiotic activities and their structural characterization. 3 Biotech 2023; 13:93. [PMID: 36845077 PMCID: PMC9944590 DOI: 10.1007/s13205-023-03506-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/31/2023] [Indexed: 02/23/2023] Open
Abstract
This work aimed to isolate and characterize xylans from branches and leaves of Protium puncticulatum, in addition to evaluating its in vitro biological and prebiotic potential. The results showed that the chemical structure of the obtained polysaccharides is similar being classified as homoxylans. The xylans presented an amorphous structure, in addition to being thermally stable and presenting a molecular weight close to 36 g/mol. With regard to biological activities, it was observed that xylans were able to promote low antioxidant activity (< 50%) in the different assays evaluated. The xylans also showed no toxicity against normal cells, in addition to being able to stimulate cells of the immune system and showing promise as anticoagulant agents. In addition to presenting promising antitumor activity in vitro. In assays of emulsifying activity, xylans were able to emulsify lipids in percentages below 50%. Regarding in vitro prebiotic activity, xylans were able to stimulate and promote the growth of different probiotics. Therefore, this study, in addition to being a pioneer, contributes to the application of these polysaccharides in the biomedical and food areas. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03506-1.
Collapse
Affiliation(s)
- Iranildo José da Cruz Filho
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco, 50.670-420, Recife,, Pernambuco Brazil
| | - Thammyris Pires de Souza
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco, 50.670-420, Recife,, Pernambuco Brazil
| | | | | | | | | | | | | | - Diego Santa Clara Marques
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco, 50.670-420, Recife,, Pernambuco Brazil
| | - Maria do Carmo Alves de Lima
- Department of Antibiotics, Biosciences Center, Federal University of Pernambuco, 50.670-420, Recife,, Pernambuco Brazil
| |
Collapse
|
6
|
Huang C, Yu Y, Li Z, Yan B, Pei W, Wu H. The preparation technology and application of xylo-oligosaccharide as prebiotics in different fields: A review. Front Nutr 2022; 9:996811. [PMID: 36091224 PMCID: PMC9453253 DOI: 10.3389/fnut.2022.996811] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/04/2022] [Indexed: 12/17/2022] Open
Abstract
Xylo-oligosaccharide (XOS) is a class of functional oligosaccharides that have been demonstrated with prebiotic activity over several decades. XOS has several advantages relative to other oligosaccharide molecules, such as promoting root development as a plant regulator, a sugar supplement for people, and prebiotics to promote intestinal motility utilization health. Now, the preparation and extraction process of XOS is gradually mature, which can maximize the extraction and avoid waste. To fully understand the recent preparation and application of XOS in different areas, we summarized the various technologies for obtaining XOS (including acid hydrolysis, enzymatic hydrolysis, hydrothermal pretreatment, and alkaline extraction) and current applications of XOS, including in animal feed, human food additives, and medicine. It is hoped that this review will serve as an entry point for those looking into the prebiotic field of research, and perhaps begin to dedicate their work toward this exciting classification of bio-based molecules.
Collapse
Affiliation(s)
- Caoxing Huang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing, China
| | - Yuxin Yu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing, China
| | - Zheng Li
- The Affiliated Zhongda Hospital of Southeast University Medical School, Nanjing, China
| | - Bowen Yan
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing, China
| | - Wenhui Pei
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Department of Bioengineering, Nanjing Forestry University, Nanjing, China
| | - Hao Wu
- Department of Biomedical Engineering, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, China
- *Correspondence: Hao Wu,
| |
Collapse
|
7
|
Ying W, Ouyang J, Lian Z, Xu Y, Zhang J. Lignin removal improves xylooligosaccharides production from poplar by acetic acid hydrolysis. BIORESOURCE TECHNOLOGY 2022; 354:127190. [PMID: 35452823 DOI: 10.1016/j.biortech.2022.127190] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/14/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
Organic acid hydrolysis is a potential method for xylooligosaccharides (XOS) production from lignocelluloses. However, the effect of lignin content on XOS production using organic acid hydrolysis remains unclear. In this work, the effect of delignification on XOS production from poplar by acetic acid (AC) hydrolysis was investigated. Hydrogen peroxide-acetic acid (HPAC) pretreatment catalyzed by 0-200 mM H2SO4 (HPAC0-HPAC200) removed 21.6-86.5% of lignin in poplar. HPAC pretreatment increased the xylan accessibility to AC solution, thus increasing the xylan removal during AC hydrolysis. An appropriate delignification (61.7%) resulted in the highest XOS yield of 37.4% by AC hydrolysis, increased by 29.9% compared to the optimal XOS yield (28.8%) from raw poplar. After alkaline post-incubation, the glucose yield of poplar residue rose from 57.1% to 78.6%. This work developed a delignification process to efficiently improve XOS and monosaccharides production from poplar.
Collapse
Affiliation(s)
- Wenjun Ying
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jia Ouyang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China
| | - Zhina Lian
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China
| | - Yong Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China
| | - Junhua Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China; College of Forestry, Northwest A&F University, Yangling 712100, China.
| |
Collapse
|
8
|
Mehta D, Purohit A, Bajarh P, Yadav K, Shivhare U, Yadav SK. Cold plasma processing improved the extraction of xylooligosaccharides from dietary fibers of rice and corn bran with enhanced in-vitro digestibility and anti-inflammatory responses. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
9
|
Barbieri SF, da Costa Amaral S, Mazepa E, Filho APS, Sassaki GL, Silveira JLM. Isolation, NMR characterization and bioactivity of a (4-O-methyl-α-D-glucurono)-β-D-xylan from Campomanesia xanthocarpa Berg fruits. Int J Biol Macromol 2022; 207:893-904. [PMID: 35358579 DOI: 10.1016/j.ijbiomac.2022.03.150] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 03/10/2022] [Accepted: 03/23/2022] [Indexed: 11/26/2022]
Abstract
Hemicellulose-type polysaccharides were isolated from Campomanesia xanthocarpa fruits by alkaline extraction and submitted to fractionation processes giving rise to eluted (GE-300) and retained (GR-300) fractions. GE-300 presented a mixture of galactoglucomannans (GGM) and glucuronoxylans (MGX), while the GR-300 fraction is composed only of MGX. In this way, the chemical structure of MGX, investigated by 1D 1H, 13C and 2D 1H-13C HSQC, 1H-1H COSY and 1H-13C HMBC NMR spectroscopy, revealed that the chemical structure of polysaccharide is a (4-O-methyl-α-D-glucurono)-D-xylan. Deep and precise NMR chemical shift determination of clean and specific 1H NMR glycosyl units were developed by 1D TOCSY and 1D NOESY analysis. This approach demonstrated unequivocally that 4-O-methyl-α-D-glucopyranosyl uronic acid group is linked to O-2 of a (1 → 4)-β-D-xylan in the main chain. Furthermore, MGX scavenged DPPH radical (0.5 to 1.0 mg mL-1) and was not cytotoxic to human dermal fibroblasts at concentrations up to 1.0 mg mL-1, as demonstrated by neutral red and crystal violet assays, evidencing in vitro biocompatibility. The structure elucidation of GR-300 together with its bioactivity assessment contributed to better understand the chemical characteristics of C. xanthocarpa hemicelluloses and may provide structural basis for future structure-property studies.
Collapse
Affiliation(s)
- Shayla Fernanda Barbieri
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil
| | - Sarah da Costa Amaral
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil
| | - Ester Mazepa
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil
| | | | - Guilherme Lanzi Sassaki
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, CEP 81.531-980 Curitiba, PR, Brazil
| | - Joana Léa Meira Silveira
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil.
| |
Collapse
|
10
|
Zhang N, Jin M, Wang K, Zhang Z, Shah NP, Wei H. Functional oligosaccharide fermentation in the gut: Improving intestinal health and its determinant factors-A review. Carbohydr Polym 2022; 284:119043. [PMID: 35287885 DOI: 10.1016/j.carbpol.2021.119043] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 12/21/2021] [Accepted: 12/21/2021] [Indexed: 12/17/2022]
|
11
|
Murlidhar Sonkar R, Savata Gade P, Bokade V, Mudliar SN, Bhatt P. Ozone assisted autohydrolysis of wheat bran enhances xylooligosaccharide production with low generation of inhibitor compounds: A comparative study. BIORESOURCE TECHNOLOGY 2021; 338:125559. [PMID: 34280853 DOI: 10.1016/j.biortech.2021.125559] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
In the present study, ozone assisted autohydrolysis (OAAH) was evaluated for enhanced generation of xylooligosaccharide (XOS) from wheat bran. The total XOS yield with optimum ozone dose of 3% (OAAH-3) was found to be 8.9% (w/w biomass) at 110 °C in comparison to 7.96% at 170 °C by autohydrolysis (AH) alone. Although, there was no significant difference in oligomeric composition (DP 2-6), significant decrease in degradation products namely furfural (2.78-fold), HMF (3.15-fold), acrylamide (nil) and acetic acid (1.06-fold), was observed with OAAH-3 as a pretreatment option. There was 1-fold higher xylan to XOS conversion and OAAH-hydrolysate had higher DPPH radical scavenging activity than AH. PCA plots indicated clear enhancement in XOS production and lower generation of inhibitors with decrease in treatment temperature. Results of the study therefore suggest OAAH can be an effective pretreatment option that can further be integrated with downstream processing for concentration and purification of XOS.
Collapse
Affiliation(s)
- Rutuja Murlidhar Sonkar
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Pravin Savata Gade
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Vijay Bokade
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Catalysis Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Sandeep N Mudliar
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India
| | - Praveena Bhatt
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India; Microbiology and Fermentation Technology Department, CSIR-Central Food Technological Research Institute, Mysore 570020, India.
| |
Collapse
|
12
|
Strategies to Increase the Biological and Biotechnological Value of Polysaccharides from Agricultural Waste for Application in Healthy Nutrition. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18115937. [PMID: 34205897 PMCID: PMC8198840 DOI: 10.3390/ijerph18115937] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/14/2021] [Accepted: 05/27/2021] [Indexed: 12/31/2022]
Abstract
Nowadays, there is a growing interest in the extraction and identification of new high added-value compounds from the agro-food industry that will valorize the great amount of by-products generated. Many of these bioactive compounds have shown beneficial effects for humans in terms of disease prevention, but they are also of great interest in the food industry due to their effect of extending the shelf life of foods by their well-known antioxidant and antimicrobial activity. For this reason, an additional research objective is to establish the best conditions for obtaining these compounds from complex by-product structures without altering their activity or even increasing it. This review highlights recent work on the identification and characterization of bioactive compounds from vegetable by-products, their functional activity, new methodologies for the extraction of bioactive compounds from vegetables, possibly increasing their biological activity, and the future of the global functional food and nutraceuticals market.
Collapse
|
13
|
Thakur A, Sharma A, Khaire KC, Moholkar VS, Pathak P, Bhardwaj NK, Goyal A. Two-Step Saccharification of the Xylan Portion of Sugarcane Waste by Recombinant Xylanolytic Enzymes for Enhanced Xylose Production. ACS OMEGA 2021; 6:11772-11782. [PMID: 34056331 PMCID: PMC8153997 DOI: 10.1021/acsomega.1c01262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 04/08/2021] [Indexed: 05/10/2023]
Abstract
Sugarcane bagasse (SB) and sugarcane trash (SCT) containing 30% hemicellulose content are the waste from the sugarcane industry. Hemicellulose being heterogeneous, more complex, and less abundant than cellulose remains less explored. The optimized conditions for the pretreatment of SB and SCT for maximizing the delignification are soaking in aqueous ammonia (SAA), 18.5 wt %, followed by heating at 70 °C for 14 h. The optimization of hydrolysis of SAA pretreated (ptd) SB and SCT by the Box-Behnken design in the first step of saccharification by xylanase (CtXyn11A) and α-l-arabinofuranosidase (PsGH43_12) resulted in the total reducing sugar (TRS) yield of xylooligosaccharides (TRS(XOS)) of 93.2 mg/g ptd SB and 85.1 mg/g ptd SCT, respectively. The second step of saccharification by xylosidase (BoGH43) gave the TRS yield of 164.7 mg/g ptd SB and 147.2 mg/g ptd SCT. The high-performance liquid chromatography analysis of hydrolysate obtained after the second step of saccharification showed 69.6% xylan-to-xylose conversion for SB and 64.1% for SCT. This study demonstrated the optimization of the pretreatment method and of the enzymatic saccharification by recombinant xylanolytic enzymes, resulting in the efficient saccharification of ptd hemicellulose to TRS by giving 73.5% conversion for SB and 71.1% for SCT. These optimized conditions for the pretreatment and saccharification of sugarcane waste can also be used at a large scale.
Collapse
Affiliation(s)
- Abhijeet Thakur
- Carbohydrate
Enzyme Biotechnology Laboratory, Department of Biosciences
and Bioengineering, Center for Energy, Department of Chemical Engineering, Indian
Institute of Technology Guwahati, Guwahati 781039, India
| | - Aakash Sharma
- Carbohydrate
Enzyme Biotechnology Laboratory, Department of Biosciences
and Bioengineering, Center for Energy, Department of Chemical Engineering, Indian
Institute of Technology Guwahati, Guwahati 781039, India
| | - Kaustubh Chandrakant Khaire
- Carbohydrate
Enzyme Biotechnology Laboratory, Department of Biosciences
and Bioengineering, Center for Energy, Department of Chemical Engineering, Indian
Institute of Technology Guwahati, Guwahati 781039, India
| | - Vijayanand Suryakant Moholkar
- Carbohydrate
Enzyme Biotechnology Laboratory, Department of Biosciences
and Bioengineering, Center for Energy, Department of Chemical Engineering, Indian
Institute of Technology Guwahati, Guwahati 781039, India
| | - Puneet Pathak
- Avantha
Centre for Industrial Research & Development, Paper Mill Campus, Yamuna Nagar, Haryana 135001, India
| | - Nishi Kant Bhardwaj
- Avantha
Centre for Industrial Research & Development, Paper Mill Campus, Yamuna Nagar, Haryana 135001, India
| | - Arun Goyal
- Carbohydrate
Enzyme Biotechnology Laboratory, Department of Biosciences
and Bioengineering, Center for Energy, Department of Chemical Engineering, Indian
Institute of Technology Guwahati, Guwahati 781039, India
- E-mail: . Phone: +91-361-258-2208
| |
Collapse
|