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Ahmed M, Javeed A, Sikandar A, Ji M, Bai X, Gu Z. Antioxidant, insecticidal activity and chemical profiling of flower's extract of Parthenium weed (Parthenium hysterophorus L.). PLoS One 2024; 19:e0296321. [PMID: 38848347 PMCID: PMC11161021 DOI: 10.1371/journal.pone.0296321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 12/11/2023] [Indexed: 06/09/2024] Open
Abstract
Parthenium hysterophorus L., an invasive alien species and notorious weed, offers various benefits to the medical and agrochemical industries. This study aimed to evaluate the antioxidant and insecticidal activities of P. hysterophorus flower extract and conduct chemical profiling to identify the phytoconstituents responsible for these biological effects. The antioxidant activity was assessed using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay, while gas chromatography mass spectrometry (GCMS) analysis was employed for chemical configuration evaluation. Our findings demonstrate that the dichloromethane (DCM) extract of P. hysterophorus exhibits potent radical scavenging activity (95.03%). Additionally, phytochemical analysis revealed significant amounts of phenols and flavonoids in the distilled water and ethyl acetate extracts (103.30 GAEg-1 and 138.67 QEg-1, respectively). In terms of insecticidal activity, the flower extract displayed maximum mortality rates of 63.33% and 46.67% after 96 hours of exposure at concentrations of 1000 μgmL-1 and 800 μgmL-1, respectively, with similar trends observed at 72 hours. Furthermore, the P. hysterophorus extracts exhibited LC50 values of 1446 μgmL-1 at 72 hours and 750 μgmL-1 at 96 hours. Imidacloprid, the positive control, demonstrated higher mortality rates at 96 hours (97.67%) and 72 hours (91.82%). Moreover, the antioxidant activity of P. hysterophorus extracts exhibited a strong correlation with phenols, flavonoids, and extract yield. GCMS analysis identified 13 chemical compounds, accounting for 99.99% of the whole extract. Ethanol extraction yielded the highest percentage of extract (4.34%), followed by distilled water (3.22%), ethyl acetate (3.17%), and dichloromethane (2.39%). The flower extract of P. hysterophorus demonstrated significant antioxidant and insecticidal activities, accompanied by the presence of valuable chemical compounds responsible for these biological effects, making it a promising alternative to synthetic agents. These findings provide a novel and fundamental basis for further exploration in purifying the chemical compounds for their biological activities.
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Affiliation(s)
- Maqsood Ahmed
- College of Plant Protection, Shenyang Agricultural University, Shenyang, P.R. China
- Department of Agriculture (Plant Protection), Pest Warning and Quality Control of Pesticides, Gujrat, Pakistan
| | - Ansar Javeed
- Henan University, Jinming Campus, Kaifeng City, Henan, China
| | - Aatika Sikandar
- College of Plant Protection, Shenyang Agricultural University, Shenyang, P.R. China
| | - Mingshan Ji
- College of Plant Protection, Shenyang Agricultural University, Shenyang, P.R. China
| | - Xuejing Bai
- Shenyang Academy of Landscape- Gardening, Shenyang, P.R. China
| | - Zumin Gu
- College of Plant Protection, Shenyang Agricultural University, Shenyang, P.R. China
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Nath P, Maibam PD, Singh S, Rajulapati V, Goyal A. Sequential pretreatment of sugarcane bagasse by alkali and organosolv for improved delignification and cellulose saccharification by chimera and cellobiohydrolase for bioethanol production. 3 Biotech 2021; 11:59. [PMID: 33489678 DOI: 10.1007/s13205-020-02600-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 12/17/2020] [Indexed: 01/13/2023] Open
Abstract
Sequential pretreatments for sugarcane bagasse (scb) by NaOH followed by organosolv under mild conditions were evaluated for cellulose recovery and dilignification. The best-optimized sequential pretreatment of scb was obtained at 10% (w/v) of raw scb loading at 1% (w/v) NaOH (50 °C, 2 h) followed by treatment with organosolv (85%, v/v phosphoric acid, 50 °C, 1 h) with chilled acetone. This sequentially pretreated scb showed cellulose recovery, 66.1% (w/w) and delignification, 83.2% (w/w). NaOH or organosolv pretreated scb showed lower cellulose recovery 47.4% (w/w) or 54.5% (w/w) with lower delignification, 61% (w/w) or 56% (w/w), respectively. Pretreated solid residue of sequentially pretreated scb was enzymatically saccharified by chimera (β-glucosidase and endoglucanase, CtGH1-L1-CtGH5-F194A) and cellobiohydrolase (CtCBH5A) cloned from Clostridium thermocellum. Enzymatic hydrolysate of best sequentially pretreated scb gave total reducing sugar (TRS) yield, 230 mg/g and glucose yield, 137 mg/g pretreated scb. Only organosolv pretreated scb gave TRS yield, 112.5 mg/g and glucose yield, 72 mg/g of pretreated scb. Thus, sequentially pretreated scb resulted in 37% higher enzymatic digestibility than only orgnaosolv pretreated scb. Higher enzymatic digestibility was supported by higher crystallinity index CrI (45%) than those obtained with only organosolv pretreated (38%) or raw scb (25%). Field Emission Scanning Electron Microscope (FESEM) and Fourier-transform infrared (FT-IR) analyses showed enhanced cellulose exposure in sequentially pretreated scb. Preliminary investigation of bioethanol production at small scale by separate hydrolysis and fermentation (SHF) of enzymatic hydrolysate from best sequentially pretreated scb by Saccharomyces cerevisiae gave maximum ethanol yield of 0.42 g/g of glucose. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-020-02600-y.
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Affiliation(s)
- Priyanka Nath
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, Assam India
| | | | - Shweta Singh
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, Assam India
| | - Vikky Rajulapati
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
| | - Arun Goyal
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, Assam 781039 India
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, Assam India
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Nedumaran M, Singh S, Jamaldheen SB, Nath P, Moholkar VS, Goyal A. Assessment of combination of pretreatment of Sorghum durra stalk and production of chimeric enzyme (β-glucosidase and endo β-1,4 glucanase, CtGH1-L1- CtGH5-F194A) and cellobiohydrolase ( CtCBH5A) for saccharification to produce bioethanol. Prep Biochem Biotechnol 2020; 50:883-896. [PMID: 32425106 DOI: 10.1080/10826068.2020.1762214] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Optimization of pretreatment and saccharification of Sorghum durra stalk (Sds) was carried out. The chimeric enzyme (CtGH1-L1-CtGH5-F194A) having β-glucosidase (CtGH1) and endo β-1,4 glucanase activity (CtGH5-F194A) and cellobiohydrolase (CtCBH5A) from Clostridium thermocellum were used for saccharification. Chimeric enzyme will save production cost of two enzymes, individually. Stage 2 pretreatment by 1% (w/v) NaOH assisted autoclaving + 1.5% (v/v) dilute H2SO4 assisted oven heating gave lower total sugar yield (366.6 mg/g of pretreated Sds) and total glucose yield (195 mg/g of pretreated Sds) in pretreated hydrolysate with highest crystallinity index 55.6% than the other stage 2 pretreatments. Optimized parameters for saccharification of above stage 2 pretreated biomass were 3% (w/v) biomass concentration, enzyme (chimera: cellobiohydrolase) ratio, 2:3 (U/g) of biomass, total enzyme loading (350 U/g of pretreated biomass), 24 h and 30 °C. Best stage 2 pretreated Sds under optimized enzyme saccharification conditions gave maximum total reducing sugar yield 417 mg/g and glucose yield 285 mg/g pretreated biomass in hydrolysate. Best stage 2 pretreated Sds showed significantly higher cellulose, 71.3% and lower lignin, 2.0% and hemicellulose, 12.2% (w/w) content suggesting the effectiveness of method. This hydrolysate upon SHF using Saccharomyces cerevisiae under unoptimized conditions produced ethanol yield, 0.12 g/g of glucose. Abbreviation: Ct-Clostridium thermocellum, Sds-Sorghum durra stalk, TRS-Total reducing sugar, HPLC-High performance liquid chromatography, RI-Refractive index, ADL-acid insoluble lignin, GYE-Glucose yeast extract, MGYP-Malt glucose yeast extract peptone, SHF-separate hydrolysis and fermentation, OD-Optical density, PVDF-Poly vinylidene fluoride, TS-total sugar, FESEM-Field emission scanning electron microscopy, XRD-X-ray diffraction, FTIR-Fourier transform infra-red spectroscopy and CrI-Crystallinity index.
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Affiliation(s)
- Mohanapriya Nedumaran
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Shweta Singh
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India.,DBT PAN-IIT Centre for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, India
| | - Sumitha Banu Jamaldheen
- DBT PAN-IIT Centre for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, India.,Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India
| | - Priyanka Nath
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India.,DBT PAN-IIT Centre for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, India
| | - Vijayanand Suryakant Moholkar
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India.,Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Arun Goyal
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India.,DBT PAN-IIT Centre for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, India.,Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India
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Nargotra P, Sharma V, Bajaj BK. Consolidated bioprocessing of surfactant-assisted ionic liquid-pretreated Parthenium hysterophorus L. biomass for bioethanol production. BIORESOURCE TECHNOLOGY 2019; 289:121611. [PMID: 31207414 DOI: 10.1016/j.biortech.2019.121611] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 06/01/2019] [Accepted: 06/03/2019] [Indexed: 05/25/2023]
Abstract
The current study presents the first ever report of surfactant (Tween-20) assisted ionic liquid IL, (1-ethyl-3-methylimidazolium methane sulphonate [Emim][MeSO3]) pretreatment of Parthenium hysterophorus biomass, its saccharification by in-house developed enzyme cocktail from Aspergillus aculeatus PN14, and fermentation of sugars to bioethanol under consolidated bioprocess. Optimization of pretreatment process variables viz. biomass loading, temperature and time, resulted in enhanced sugar yield (40.1%) upon saccharification of pretreated biomass with IL-stable cellulase and xylanase enzymes from an IL-tolerant newly isolated fungus Aspergillus aculeatus PN14. Physicochemical analysis of surfactant assisted IL-pretreated biomass by SEM, FT-IR and XRD provided molecular insights into inter/intra molecular ultrastructural changes in the biomass that eased the saccharification. Thorough understanding of chemical/molecular structure of biomass may help developing customized pretreatment regimes of apt severity which might result in enhanced accessibility of enzymes to biomass, and hence more sugar content.
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Affiliation(s)
- Parushi Nargotra
- School of Biotechnology, University of Jammu, Jammu 180006, India
| | - Vishal Sharma
- School of Biotechnology, University of Jammu, Jammu 180006, India
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Pradhan S, Borah AJ, Poddar MK, Dikshit PK, Rohidas L, Moholkar VS. Microbial production, ultrasound-assisted extraction and characterization of biopolymer polyhydroxybutyrate (PHB) from terrestrial (P. hysterophorus) and aquatic (E. crassipes) invasive weeds. BIORESOURCE TECHNOLOGY 2017; 242:304-310. [PMID: 28366692 DOI: 10.1016/j.biortech.2017.03.117] [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: 01/23/2017] [Revised: 03/18/2017] [Accepted: 03/20/2017] [Indexed: 06/07/2023]
Abstract
This study reports synthesis of biodegradable poly(3-hydroxybutyrate) (PHB) polymer from two invasive weeds, viz. P. hysterophorus and E. crassipes. The pentose and hexose-rich hydrolyzates obtained from acid pretreatment and enzymatic hydrolysis of two biomasses were separately fermented using Ralstonia eutropha MTCC 8320 sp. PHB was extracted using sonication and was characterized using FTIR, 1H and 13C NMR and XRD. PHB content of dry cell mass was 8.1-21.6% w/w, and the PHB yield was 6.85×10-3-36.41×10-3% w/w raw biomass. Thermal properties of PHB were determined by TGA, DTG and DSC analysis. PHB obtained from pentose-hydrolyzate had glass transition temperatures of 6°-9°C, while PHB from hexose-rich hydrolyzate had maximum thermal degradation temperatures of 370°-389°C. These thermal properties were comparable to the properties of commercial PHB. Probable causes leading to differences in thermal properties of pentose and hexose-derived PHB are: extent of crystallinity and presence of impurity in the polymer matrix.
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Affiliation(s)
- Sushobhan Pradhan
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Arup Jyoti Borah
- Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Maneesh Kumar Poddar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Pritam Kumar Dikshit
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Lilendar Rohidas
- Department of Chemical Engineering, National Institute of Technology (NIT), Tiruchirappalli 620 015, Tamil Nadu, India
| | - Vijayanand S Moholkar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India; Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India.
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Borah AJ, Agarwal M, Poudyal M, Goyal A, Moholkar VS. Mechanistic investigation in ultrasound induced enhancement of enzymatic hydrolysis of invasive biomass species. BIORESOURCE TECHNOLOGY 2016; 213:342-349. [PMID: 26898160 DOI: 10.1016/j.biortech.2016.02.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 02/05/2016] [Accepted: 02/06/2016] [Indexed: 06/05/2023]
Abstract
This study has assessed four invasive weeds, viz. Saccharum spontaneum (SS), Mikania micrantha (MM), Lantana camara (LC) and Eichhornia crassipes (EC) for enzymatic hydrolysis prior to bioalcohol fermentation. Enzymatic hydrolysis of pretreated biomasses of weeds has been conducted with mechanical agitation and sonication under constant (non-optimum) conditions. Profiles of total reducible sugar release have been fitted to HCH-1 model of enzymatic hydrolysis using Genetic Algorithm. Trends in parameters of this model reveal physical mechanism of ultrasound-induced enhancement of enzymatic hydrolysis. Sonication accelerates hydrolysis kinetics by ∼10-fold. This effect is contributed by several causes, attributed to intense micro-convection generated during sonication: (1) increase in reaction velocity, (2) increase in enzyme-substrate affinity, (3) reduction in product inhibition, and (4) enhancement of enzyme activity due to conformational changes in its secondary structure. Enhancement effect of sonication is revealed to be independent of conditions of enzymatic hydrolysis - whether optimum or non-optimum.
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Affiliation(s)
- Arup Jyoti Borah
- Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Mayank Agarwal
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Manisha Poudyal
- Department of Molecular Biology and Biotechnology, Tezpur University, Napaam, Tezpur 784028, Assam, India
| | - Arun Goyal
- Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India; Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Vijayanand S Moholkar
- Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India.
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Borah AJ, Singh S, Goyal A, Moholkar VS. An assessment of the potential of invasive weeds as multiple feedstocks for biofuel production. RSC Adv 2016. [DOI: 10.1039/c5ra27787f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present study assessed the feasibility of five invasive weeds, namely, Arundo donax, Saccharum spontaneum, Mikania mikrantha, Lantana camara and Eichhornia crasspies, as a feedstock for biofuels production.
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Affiliation(s)
- Arup Jyoti Borah
- Center for Energy
- Indian Institute of Technology Guwahati
- Guwahati-781 039
- India
| | - Shuchi Singh
- Center for Energy
- Indian Institute of Technology Guwahati
- Guwahati-781 039
- India
| | - Arun Goyal
- Center for Energy
- Indian Institute of Technology Guwahati
- Guwahati-781 039
- India
- Department of Biosciences and Bioengineering
| | - Vijayanand S. Moholkar
- Center for Energy
- Indian Institute of Technology Guwahati
- Guwahati-781 039
- India
- Department of Chemical Engineering
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Methrath Liyakathali NA, Muley PD, Aita G, Boldor D. Effect of frequency and reaction time in focused ultrasonic pretreatment of energy cane bagasse for bioethanol production. BIORESOURCE TECHNOLOGY 2016; 200:262-271. [PMID: 26496215 DOI: 10.1016/j.biortech.2015.10.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/01/2015] [Accepted: 10/03/2015] [Indexed: 06/05/2023]
Abstract
Pretreatment of lignocellulosic biomass is a critical steps in bioethanol production. Ultrasonic pretreatment significantly improves cellulose hydrolysis increasing sugar yields, but current system designs have limitations related to efficiency and scalability. This study evaluates the ultrasonic pretreatment of energy cane bagasse in a novel scalable configuration and by maximizing coupling of ultrasound energy to the material via active modulation of frequency. Pretreatment was conducted in 28% ammonia water mixture at a sample:ammonia:water ratio of 1:0.5:8. Process performance was investigated as a function of frequency (20, 20.5, 21kHz), reaction time (30, 45, 60min), temperature, and power levels for multiple combinations of ammonia, water and sample mixture. Results indicated an increased enzymatic digestibility, with maximum glucose yield of 24.29g/100g dry biomass. Theoretical ethanol yields obtained ranged from 6.47 to a maximum of 24.29g/100g dry biomass. Maximum energy attainable was 886.34kJ/100g dry biomass.
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Affiliation(s)
- Niyaz Ahamed Methrath Liyakathali
- Department of Biological and Agricultural Engineering, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, United States
| | - Pranjali D Muley
- Department of Biological and Agricultural Engineering, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, United States
| | - Giovanna Aita
- Audubon Sugar Institute, LSU AgCenter, St. Gabriel, LA 70776, United States
| | - Dorin Boldor
- Department of Biological and Agricultural Engineering, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, United States.
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Ranjan A, Singh S, Malani RS, Moholkar VS. Ultrasound-assisted bioalcohol synthesis: review and analysis. RSC Adv 2016. [DOI: 10.1039/c6ra11580b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present article highlights the efficacy of ultrasound in the intensification of all the steps of bioalcohol synthesis with a critical analysis of the literature.
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Affiliation(s)
- Amrita Ranjan
- Center for Energy
- Indian Institute of Technology Guwahati
- Guwahati-781 039
- India
- Instituto de Biología Molecular y Celular de Plantas (IBMCP)
| | - Shuchi Singh
- Center for Energy
- Indian Institute of Technology Guwahati
- Guwahati-781 039
- India
| | - Ritesh S. Malani
- Center for Energy
- Indian Institute of Technology Guwahati
- Guwahati-781 039
- India
| | - Vijayanand S. Moholkar
- Center for Energy
- Indian Institute of Technology Guwahati
- Guwahati-781 039
- India
- Department of Chemical Engineering
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Gasparotto JM, Werle LB, Mainardi MA, Foletto EL, Kuhn RC, Jahn SL, Mazutti MA. Ultrasound-assisted hydrolysis of sugarcane bagasse using cellulolytic enzymes by direct and indirect sonication. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.07.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Naveena B, Armshaw P, Tony Pembroke J. Ultrasonic intensification as a tool for enhanced microbial biofuel yields. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:140. [PMID: 26379772 PMCID: PMC4570611 DOI: 10.1186/s13068-015-0321-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/19/2015] [Indexed: 05/09/2023]
Abstract
Ultrasonication has recently received attention as a novel bioprocessing tool for process intensification in many areas of downstream processing. Ultrasonic intensification (periodic ultrasonic treatment during the fermentation process) can result in a more effective homogenization of biomass and faster energy and mass transfer to biomass over short time periods which can result in enhanced microbial growth. Ultrasonic intensification can allow the rapid selective extraction of specific biomass components and can enhance product yields which can be of economic benefit. This review focuses on the role of ultrasonication in the extraction and yield enhancement of compounds from various microbial sources, specifically algal and cyanobacterial biomass with a focus on the production of biofuels. The operating principles associated with the process of ultrasonication and the influence of various operating conditions including ultrasonic frequency, power intensity, ultrasonic duration, reactor designs and kinetics applied for ultrasonic intensification are also described.
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Affiliation(s)
- Balakrishnan Naveena
- Molecular Biochemistry Laboratory, Materials and Surface Science Institute, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland
| | - Patricia Armshaw
- Molecular Biochemistry Laboratory, Materials and Surface Science Institute, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland
| | - J. Tony Pembroke
- Molecular Biochemistry Laboratory, Materials and Surface Science Institute, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland
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