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Impact of ultrasound and electric fields on microalgae growth: a comprehensive review. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1007/s43153-022-00281-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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2
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Umego EC, He R, Huang G, Dai C, Ma H. Ultrasound‐assisted fermentation: Mechanisms, technologies, and challenges. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15559] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ekene Christopher Umego
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Department of Food Science and Technology University of Nigeria Enugu Nigeria
| | - Ronghai He
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
| | - Guoping Huang
- Institute of Life Sciences Jiangsu University Zhenjiang China
| | - Chuanhua Dai
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
| | - Haile Ma
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
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3
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Ultrasonic Modulation of the Technological and Functional Properties of Yeast Strains. Microorganisms 2020; 8:microorganisms8091399. [PMID: 32932961 PMCID: PMC7564850 DOI: 10.3390/microorganisms8091399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/09/2020] [Accepted: 09/10/2020] [Indexed: 12/19/2022] Open
Abstract
This research was aimed at studying the effects of low intensity ultrasound (US) on some technological and functional properties of eight strains of Saccharomyces cerevisiae; namely, growth patterns (growth at 2–5% of NaCl or at 37 °C), autoaggregation and tolerance to simulated gastrointestinal conditions were evaluated. A US treatment was applied at 20% of net power (130 W) by a modulating duration (2–10 min) and pulses (2–10 s). The viable count (4.81–6.33 log CFU/mL) was not affected by US, while in terms of technological traits the effect was strain specific; in particular, for some strains a positive effect of US was found with a significant growth enhancement (growth index > 120%). The treatment was also able to increase the autoaggregation of some strains, thus suggesting that US could represent a promising way to treat and select nonconventional functional yeasts for food applications.
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Al Daccache M, Koubaa M, Salameh D, Maroun RG, Louka N, Vorobiev E. Ultrasound-assisted fermentation for cider production from Lebanese apples. ULTRASONICS SONOCHEMISTRY 2020; 63:104952. [PMID: 31945563 DOI: 10.1016/j.ultsonch.2019.104952] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/25/2019] [Accepted: 12/27/2019] [Indexed: 06/10/2023]
Abstract
The present work studies the impact of low-intensity ultrasound (US) on Hanseniaspora sp. yeast fermentations. The effect of pulse duration and growth phase on US application was first evaluated using a synthetic medium. The optimal conditions were then applied to apple juice US-assisted fermentation. An US treatment chamber was first designed to allow the recycling of the culture medium. The optimal US pulse duration on the yeast growth rate was of 0.5 s followed by 6 s rest period, and during 6 h of both Lag and Log phases. These US parameters led to a faster consumption of glucose in the medium during the fermentation, compared to the untreated culture. The impact of US was also depending on the growth phase, showing higher sensitivity of the yeast to US during the Lag phase rather than the Log phase. US-assisted fermentation of apple juice showed a significant increase in biomass growth and glucose consumption, along with a significant decrease in the ethanol yield. The fastest growth kinetic (by 52%), and the highest ethanol reduction (by 0.55% (v, v)) were obtained for the treatment during the first 12 h of fermentation, thereby, the stationary phase was reached faster, and the maximum biomass growth rate was 10 folds higher compared to the untreated culture. The results obtained in this study demonstrated the promising efficiency of US-assisted fermentation in stimulating the biomass growth and reducing the ethanol content in alcoholic beverages.
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Affiliation(s)
- Marina Al Daccache
- Sorbonne University, Université de technologie de Compiègne, ESCOM, EA 4297 TIMR, Centre de recherche Royallieu, CS 60319, 60203 Compiègne cedex, France; Faculté des Sciences, Centre d'Analyses et de Recherche, UR TVA, Laboratoire CTA, Université Saint-Joseph, Beyrouth, Lebanon
| | - Mohamed Koubaa
- ESCOM, UTC, EA 4297 TIMR, 1 allée du réseau Jean-Marie Buckmaster, 60200 Compiègne, France.
| | - Dominique Salameh
- Faculté des Sciences, Centre d'Analyses et de Recherche, UR TVA, Laboratoire CTA, Université Saint-Joseph, Beyrouth, Lebanon
| | - Richard G Maroun
- Faculté des Sciences, Centre d'Analyses et de Recherche, UR TVA, Laboratoire CTA, Université Saint-Joseph, Beyrouth, Lebanon
| | - Nicolas Louka
- Faculté des Sciences, Centre d'Analyses et de Recherche, UR TVA, Laboratoire CTA, Université Saint-Joseph, Beyrouth, Lebanon
| | - Eugène Vorobiev
- Sorbonne University, Université de technologie de Compiègne, ESCOM, EA 4297 TIMR, Centre de recherche Royallieu, CS 60319, 60203 Compiègne cedex, France
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5
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Singh N, Roy K, Goyal A, Moholkar VS. Investigations in ultrasonic enhancement of β-carotene production by isolated microalgal strain Tetradesmus obliquus SGM19. ULTRASONICS SONOCHEMISTRY 2019; 58:104697. [PMID: 31450379 DOI: 10.1016/j.ultsonch.2019.104697] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/11/2019] [Accepted: 07/15/2019] [Indexed: 06/10/2023]
Abstract
Microalgae constitute relatively novel source of lipids for biodiesel production. The economy of this process can be enhanced by the recovery of β-carotenes present in the microalgal cells. The present study has addressed matter of enhancement of lipids and β-carotene production by microalgal species of Tetradesmus obliquus SGM19 with the application of sonication. As first step, the growth cycle of Tetradesmus obliquus SGM19 was optimized using statistical experimental design. Optimum parameters influencing microalgal growth were: Sodium nitrate = 1.5 g/L, ethylene diamine tetraacetic acid = 0.001 g/L, temperature = 28.5 °C, pH = 7.5, light intensity = 5120 lux, β-carotene yield = 0.67 mg/g DCW. Application of 33 kHz and 1.4 bar ultrasound at 10% duty cycle was revealed to enhance the lipid and β-carotene yields by 34.5% and 31.5%, respectively. Kinetic analysis of substrate and product profiles in control and test experiments revealed both lipid and β-carotene to be growth-associated products. The intracellular NAD(H) content during late log phase was monitored in control and test experiments as a measure of relative kinetics of intracellular metabolism. Consistently higher NAD(H) concentrations were observed for test experiments; indicating faster metabolism. Finally, the viability of ultrasound-exposed microalgal cells (assessed with flow cytometry) was >80%.
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Affiliation(s)
- Neha Singh
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Kuldeep Roy
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Arun Goyal
- Centre 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
- Centre 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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6
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Borah AJ, Roy K, Goyal A, Moholkar VS. Mechanistic investigations in biobutanol synthesis via ultrasound-assisted ABE fermentation using mixed feedstock of invasive weeds. BIORESOURCE TECHNOLOGY 2019; 272:389-397. [PMID: 30388576 DOI: 10.1016/j.biortech.2018.10.063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/20/2018] [Accepted: 10/23/2018] [Indexed: 06/08/2023]
Abstract
This study reports an ultrasound-assisted Acetone-Butanol-Ethanol (ABE) fermentation process using Clostridium acetobutylicum MTCC 11,274 and mixed feedstock consisting of eight highly invasive weeds. Composite (pentose + hexose) hydrolyzate was fermented with sonication at 35 kHz and 10% duty cycle (test) and mechanical agitation at 150 rpm (control). Net solvent yield with sonication was 0.288 g/g raw biomass in 92 h against yield of 0.168 g/g raw biomass in 120 h with mechanical agitation. Butanol yield in test and control fermentation was 0.233 and 0.149 g/g total fermentable sugar, respectively. Substrate and metabolites profiles in test and control fermentation were analyzed using biokinetic model. Sonication enhanced kinetics of metabolic reactions with rise in substrate affinity of enzymes (reduced saturation constants) and greater resistance to substrate inhibition. Flow cytometry analysis of cells exposed to sonication revealed high cell viability with no adverse effect on physiology.
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Affiliation(s)
- Arup Jyoti Borah
- Center for Energy, Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Kuldeep Roy
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Arun Goyal
- Center for Energy, Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Vijayanand S Moholkar
- Center for Energy, Department of Chemical Engineering, 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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Batghare AH, Pati S, Roy K, Moholkar VS. Mechanistic investigations in ultrasound-assisted extraction of astaxanthin from Phaffia rhodozyma MTCC 7536. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.biteb.2018.10.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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8
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Tizazu BZ, Roy K, Moholkar VS. Mechanistic investigations in ultrasound-assisted xylitol fermentation. ULTRASONICS SONOCHEMISTRY 2018; 48:321-328. [PMID: 30080557 DOI: 10.1016/j.ultsonch.2018.06.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 06/15/2018] [Accepted: 06/17/2018] [Indexed: 06/08/2023]
Abstract
This study has investigated ultrasound-assisted xylitol production through fermentation of dilute acid (pentose-rich) hydrolysate of sugarcane bagasse using free cells of Candida tropicalis. Sonication of fermentation mixture at optimum conditions was carried out in ultrasound bath (37 kHz and 10% duty cycle). Time profiles of substrate and product in control (mechanical shaking) and test (mechanical shaking + sonication) fermentations were fitted to kinetic model using Genetic Algorithm (GA) optimization. Max. xylitol yield of 0.56 g/g and 0.61 g/g of xylose was achieved in control and test fermentations, respectively. The biomass yield also increased marginally (∼17%) with sonication. However, kinetics of fermentation increased drastically (2.5×) with sonication with 2× rise in xylose uptake and utilization by the cells. With comparative analysis of kinetic parameters in control and test experiments, this result was attributed to enhanced permeability of cell membrane that allowed faster diffusion of nutrients, substrates and products across cell membrane, higher enzyme-substrate affinity, dilution of toxic components and reduced inhibition of intracellular enzymes by substrate.
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Affiliation(s)
- Belachew Zegale Tizazu
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Kuldeep Roy
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Vijayanand S Moholkar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India.
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Tizazu BZ, Roy K, Moholkar VS. Ultrasonic enhancement of xylitol production from sugarcane bagasse using immobilized Candida tropicalis MTCC 184. BIORESOURCE TECHNOLOGY 2018; 268:247-258. [PMID: 30081284 DOI: 10.1016/j.biortech.2018.07.141] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
This study investigates ultrasonic enhancement of xylitol production from sugarcane bagasse using C. tropicalis MTCC 184 immobilized on PU foam. Initial xylitol yield of 0.53 g/g xylose improved to 0.65 g/g of xylose (in 36 h fermentation) after optimization of medium and fermentation parameters. Optimum values of experimental parameters for maximum xylitol were: yeast extract = 5.78 g/L, (NH4)2SO4 = 3.22 g/L, KH2PO4 = 0.58 g/L, MgSO4·7H2O = 0.57 g/L and temperature = 29.3 °C, initial pH = 6.2, agitation rate = 151 rpm and initial xylose concentration = 20.9 g/L. Application of 37 kHz sonication @10% duty cycle during fermentation at optimum conditions resulted in marked intensification of fermentation kinetics. Xylitol yield of 0.66 g/g of xylose has been obtained in ultrasound-assisted fermentation in just 15 h. Fitting of time profiles of substrates and products to kinetic model has highlighted actual physical mechanisms underlying 2-fold faster kinetics induced by sonication.
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Affiliation(s)
- Belachew Zegale Tizazu
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Kuldeep Roy
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Vijayanand S Moholkar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India.
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10
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Jamaldheen SB, Sharma K, Rani A, Moholkar VS, Goyal A. Comparative analysis of pretreatment methods on sorghum (Sorghum durra) stalk agrowaste for holocellulose content. Prep Biochem Biotechnol 2018; 48:457-464. [DOI: 10.1080/10826068.2018.1466148] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Sumitha Banu Jamaldheen
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, India
| | - Kedar Sharma
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, India
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Aruna Rani
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, India
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Vijayanand S. Moholkar
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Arun Goyal
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati, India
- DBT PAN-IIT Center for Bioenergy, Indian Institute of Technology Guwahati, Guwahati, India
- Carbohydrate Enzyme Biotechnology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
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11
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Udoetok IA, Wilson LD, Headley JV. Ultra-sonication assisted cross-linking of cellulose polymers. ULTRASONICS SONOCHEMISTRY 2018; 42:567-576. [PMID: 29429704 DOI: 10.1016/j.ultsonch.2017.12.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/09/2017] [Accepted: 12/10/2017] [Indexed: 05/20/2023]
Abstract
Cross-linked cellulose-epichlorohydrin polymers were synthesized by a conventional heating with stirring (C-EP heating) and a parallel process using ultra-sonication (C-EP sonication) in the presence of aqueous ammonia. Structural characterization of modified cellulose was carried out using FTIR/13C solid state NMR spectroscopy and thermal methods (DSC and TGA). Evidence of products with variable textural properties and morphology was supported by nitrogen gas adsorption, solvent swelling, and microscopy (SEM, TEM) results. C-EP sonication possess greater cross-linker content judging by the loss of the cellulose fibril structure which was facilitated by acoustic cavitation effects due to ultra-sonication. Equilibrium sorption studies in aqueous solution with 2-naphthoxy acetic acid (NAA) revealed that C-EP heating had slightly greater sorption capacity than C-EP sonication at alkaline pH. By contrast, C-EP sonication had greater uptake of NAA at acidic pH. Kinetic uptake studies at pH 3 is described by the pseudo-second order model, where the surface sites of C-EP heating became saturated within ca. 75 min; whereas, ca. 350 min occurred for C-EP sonication. This study demonstrates that the yield of sonication assisted cross-linking of cellulose is greater with improved adsorption properties. The study also reveals the utility of sonication assisted synthesis for the valorization and utilization of cellulose modified materials.
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Affiliation(s)
- Inimfon A Udoetok
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada.
| | - John V Headley
- Water Science and Technology Directorate, Environment and Climate Change Canada, 11 Innovation Boulevard, Saskatoon, Saskatchewan S7N 3H5, Canada
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12
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Batghare AH, Singh N, Moholkar VS. Investigations in ultrasound-induced enhancement of astaxanthin production by wild strain Phaffia rhodozyma MTCC 7536. BIORESOURCE TECHNOLOGY 2018; 254:166-173. [PMID: 29413919 DOI: 10.1016/j.biortech.2018.01.073] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/11/2018] [Accepted: 01/15/2018] [Indexed: 06/08/2023]
Abstract
This work reports ultrasound-induced enhancement of astaxanthin production in batch fermentation using wild strain of P. rhodozyma MTCC 7536. The methodology adopted in this study comprises of statistical optimization of the medium and fermentation parameters, followed by application of sonication at optimized conditions. P. rhodozyma fermentation at conditions of 20 g/L glucose, pH 4.4, temperature 21 °C, 4% v/v inoculum, shaking at 205 rpm with nitrogen sources of (NH4)2SO4 and yeast extract yielded 6.8 mg/L or 1360 μg/g DCW astaxanthin in 84 h. Application of 33 kHz and 140 kPa sonication at 10% duty cycle in final 12 h of fermentation enhanced the astaxanthin yield to 8.6 mg/L or 1728 μg/g DCW, which is higher than several mutant strains reported in literature. These results are essentially manifestations of intense microturbulence generated by sonication in fermentation mixture.
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Affiliation(s)
- Amit H Batghare
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Neha Singh
- Center for Energy, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, 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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13
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Bundhoo ZMA, Mohee R. Ultrasound-assisted biological conversion of biomass and waste materials to biofuels: A review. ULTRASONICS SONOCHEMISTRY 2018; 40:298-313. [PMID: 28946428 DOI: 10.1016/j.ultsonch.2017.07.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 07/16/2017] [Accepted: 07/17/2017] [Indexed: 05/25/2023]
Abstract
Ultrasound irradiation has been gaining increasing interests over the years to assist biological conversion of lignocellulosic biomass and waste materials to biofuels. As such, this study reviewed the different effects of sonication on pre-treatment of lignocellulosic biomass and waste materials prior to biofuel production. The mechanisms of ultrasound irradiation as a pre-treatment technique were initially described and the impacts of sonication on disruption of lignocellulosic materials, alteration of the crystalline lattice structure of cellulose molecules, solubilisation of organic matter, reducing sugar production and enzymatic hydrolysis were then reviewed. Subsequently, the influences of ultrasound irradiation on bio-methane, bio-hydrogen and bio-ethanol production were re-evaluated, with most studies reporting enhanced biofuel production from anaerobic digestion or fermentation processes. Nonetheless, despite its positive impacts on biofuel production, sonication was found to be energetically inefficient based on the lab-scale studies reviewed. To conclude, this study reviewed some of the challenges of ultrasound irradiation for enhanced biofuel production while outlining some areas for further research.
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Affiliation(s)
- Zumar M A Bundhoo
- Department of Chemical & Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, Mauritius.
| | - Romeela Mohee
- Department of Chemical & Environmental Engineering, Faculty of Engineering, University of Mauritius, Réduit, Mauritius
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14
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Sarma S, Anand A, Dubey VK, Moholkar VS. Metabolic flux network analysis of hydrogen production from crude glycerol by Clostridium pasteurianum. BIORESOURCE TECHNOLOGY 2017; 242:169-177. [PMID: 28456454 DOI: 10.1016/j.biortech.2017.03.168] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/25/2017] [Accepted: 03/27/2017] [Indexed: 05/28/2023]
Abstract
The present study has attempted to get insight into ultrasound induced enhancement in biohydrogen production from glycerol fermentation using metabolic flux analysis (MFA). A pseudo steady state metabolic flux network model was constructed and analyzed using experimentally measured glycerol uptake rate and fluxes of four metabolites, viz. acetate, butyrate, succinate and 1,3-PDO. Glycerol consumption increased by ∼50% under sonication. Biohydrogen yield showed marked rise of ∼40% with application of ultrasound. Butyrate and 1,3-PDO were the major products of glycerol metabolism. Sonication had major influence on carbon fluxes at the acetyl-CoA node. MFA results revealed enhanced flux towards butyrate under sonication, which was manifested in higher butyrate to acetate (B/A) ratio in products and greater H2 generation. Biohydrogen production was also a microbial growth associated process. Finally, two theoretical alternatives for further enhancement of biohydrogen production were assessed with MFA, viz. enhancement of glycerol uptake and blocking of butyrate pathway.
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Affiliation(s)
- Shyamali Sarma
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Avinash Anand
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Vikash Kumar Dubey
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Vijayanand S Moholkar
- Centre 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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15
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Bansode SR, Rathod VK. An investigation of lipase catalysed sonochemical synthesis: A review. ULTRASONICS SONOCHEMISTRY 2017. [PMID: 28633854 DOI: 10.1016/j.ultsonch.2017.02.028] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Ultrasonic irradiation has recently gained attention of researchers for its process intensification in numerous reactions. Earlier ultrasound was known for its application either to deactivate enzyme activity or to disrupt the cell. However, in recent years, practice of ultrasonic irradiation began to emerge as a tool for the activation of the enzymes under mild frequency conditions. The incorporation of ultrasound in any of enzymatic reactions not only increases yield but also accelerates the rate of reaction in the presence of mild conditions with better yield and less side-products. To attain maximum yield, it is crucial to understand the mechanism and effect of sonication on reaction especially for the lipase enzyme. Thus, the influence of ultrasound irradiation on reaction yield for different parameters including temperature, enzyme concentration, mole ratio of substrates, solvents ultrasonic frequency and power was reviewed and discussed. The physical effect of cavitation determined by bubble dynamics and rate of reaction through kinetic modelling also needs to be assessed for complete investigation and scale up of synthesis. Thus, prudish utilisation of ultrasound for enzymatic synthesis can serve better future for sustainable and green chemistry.
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Affiliation(s)
- Sneha R Bansode
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Virendra K Rathod
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
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16
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Mota MJ, Lopes RP, Koubaa M, Roohinejad S, Barba FJ, Delgadillo I, Saraiva JA. Fermentation at non-conventional conditions in food- and bio-sciences by the application of advanced processing technologies. Crit Rev Biotechnol 2017; 38:122-140. [PMID: 28423948 DOI: 10.1080/07388551.2017.1312272] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The interest in improving the yield and productivity values of relevant microbial fermentations is an increasingly important issue for the scientific community. Therefore, several strategies have been tested for the stimulation of microbial growth and manipulation of their metabolic behavior. One promising approach involves the performance of fermentative processes during non-conventional conditions, which includes high pressure (HP), electric fields (EF) and ultrasound (US). These advanced technologies are usually applied for microbial inactivation in the context of food processing. However, the approach described in this study focuses on the use of these technologies at sub-lethal levels, since the aim is microbial growth and fermentation under these stress conditions. During these sub-lethal conditions, microbial strains develop specific genetic, physiologic and metabolic stress responses, possibly leading to fermentation products and processes with novel characteristics. In some cases, these modifications can represent considerable improvements, such as increased yields, productivities and fermentation rates, lower accumulation of by-products and/or production of different compounds. Although several studies report the successful application of these technologies during the fermentation processes, information on this subject is still scarce and poorly understood. For that reason, the present review paper intends to assemble and discuss the main findings reported in the literature to date, and aims to stimulate interest and encourage further developments in this field.
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Affiliation(s)
- Maria J Mota
- a Chemistry Department, QOPNA , University of Aveiro, Campus Universitário de Santiago , Aveiro , Portugal
| | - Rita P Lopes
- a Chemistry Department, QOPNA , University of Aveiro, Campus Universitário de Santiago , Aveiro , Portugal
| | - Mohamed Koubaa
- b Sorbonne Universités , Université de Technologie de Compiègne, Laboratoire Transformations Intégrées de la Matière Renouvelable (UTC/ESCOM, EA 4297 TIMR), Centre de Recherche de Royallieu , Compiegne France
| | - Shahin Roohinejad
- c Department of Food Technology and Bioprocess Engineering , Max Rubner-Institut, Federal Research Institute of Nutrition and Food , Karlsruhe , Germany.,d Burn and Wound Healing Research Center, Division of Food and Nutrition , Shiraz University of Medical Sciences , Shiraz , Iran
| | - Francisco J Barba
- e Nutrition and Food Science Area, Preventive Medicine and Public Health, Food Sciences, Toxicology and Forensic Medicine Department, Faculty of Pharmacy , Universitat de València , València , Spain
| | - Ivonne Delgadillo
- a Chemistry Department, QOPNA , University of Aveiro, Campus Universitário de Santiago , Aveiro , Portugal
| | - Jorge A Saraiva
- a Chemistry Department, QOPNA , University of Aveiro, Campus Universitário de Santiago , Aveiro , Portugal
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17
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Samal K, Mohanty K, Das C. Treatment of Pb ion contaminated wastewater using hazardous parthenium (P. hysterophorus L.) weed. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:427-438. [PMID: 28112670 DOI: 10.2166/wst.2016.536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, a low-cost, sustainable biosorbent parthenium (P. hysterophorus L.) weed powder was investigated for the treatment of Pb contaminated wastewater. Physicochemical characteristics of the biosorbent were measured, namely, bulk density as 0.42 g cm-3, porosity as 45%, BET surface area as 20.79 m2 g-1, particle size as <125 μm, moisture content as 68% and point of zero charge as 5.6. The various parameters of biosorption process were examined. The maximum percentage removal of Pb ion achieved was 98.3% with 1.0 g L-1 of biosorbent dose for 50 mg L-1 initial Pb ion concentration at process condition of pH 4, temperature 30 °C (303 K), agitation speed 200 rpm and 150 min of equilibrium contact time. The equilibrium data were examined by various rate kinetics models and adsorption isotherm models. Sorption of Pb ion onto biosorbent was confirmed by Fourier transform infrared spectroscopy (FTIR) transmittance spectra and field-emission scanning electron microscopy and energy-dispersive X-ray (FESEM-EDX) analysis of native as well as Pb ion adsorbed biosorbent. The change in thermodynamic parameters, such as Gibbs free energy (ΔG), enthalpy (ΔH) and entropy (ΔS) was calculated. The results suggest that biosorption process using parthenium (P. hysterophorus L.) weed powder as biosorbent was a spontaneous, feasible and efficient method for treatment of Pb-bearing wastewater.
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Affiliation(s)
- Kulbhushan Samal
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India E-mail:
| | - Kaustubha Mohanty
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India E-mail:
| | - Chandan Das
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India E-mail:
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18
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Yildiz G, Rababah TM, Feng H. Ultrasound-assisted cutting of cheddar, mozzarella and Swiss cheeses – Effects on quality attributes during storage. INNOV FOOD SCI EMERG 2016. [DOI: 10.1016/j.ifset.2016.07.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Velmurugan R, Incharoensakdi A. Proper ultrasound treatment increases ethanol production from simultaneous saccharification and fermentation of sugarcane bagasse. RSC Adv 2016. [DOI: 10.1039/c6ra17792a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
To improve the saccharification and fermentation processes, proper ultrasound was applied which resulted in the presence of cellulase complex with improved β-glucosidase ratio leading to enhanced overall ethanol yield.
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20
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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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21
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Subhedar PB, Gogate PR. Ultrasound-assisted bioethanol production from waste newspaper. ULTRASONICS SONOCHEMISTRY 2015; 27:37-45. [PMID: 26186818 DOI: 10.1016/j.ultsonch.2015.04.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/27/2015] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
The present work deals with intensification of bioethanol production from waste newspaper using Saccharomyces cerevisiae using ultrasonic irradiations. The effect of different process parameters such as application of ultrasonic irradiation at different growth phases, irradiation time, ultrasonic power and duty cycle on the bioethanol production has been investigated. The favorable conditions for the maximum yield were established as application of ultrasonic irradiation (duration of 10 min) to fermentation broth at 12 h of growth phase with 25 kHz frequency, 160 W power and 20% duty cycle. The bioethanol productivity was increased by 1.8 times from 7.8 to 14.1 g/L compared with the non-sonicated control fermentation. Decrease in glucose concentration from 0.63% to 0.2% w/v in ultrasound-assisted fermentation confirmed the improved substrate uptake of the microbial cell due to the application of ultrasound. ESEM analysis also confirmed the changes in the cell morphology leading to improved cell permeability. Results were fitted to an unstructured kinetic model comprising of the kinetic and physiological parameters. Overall, the work has demonstrated an intensified approach for the bioethanol production based on the use of ultrasound.
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Affiliation(s)
- Preeti B Subhedar
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Parag R Gogate
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
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22
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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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23
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Singh S, Agarwal M, Bhatt A, Goyal A, Moholkar VS. Ultrasound enhanced enzymatic hydrolysis of Parthenium hysterophorus: A mechanistic investigation. BIORESOURCE TECHNOLOGY 2015; 192:636-645. [PMID: 26094188 DOI: 10.1016/j.biortech.2015.06.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 06/05/2015] [Accepted: 06/06/2015] [Indexed: 06/04/2023]
Abstract
This study has attempted to establish the mechanism of the ultrasound-induced enhancement of enzymatic hydrolysis of pretreated and delignified biomass of Parthenium hysterophorus. A dual approach of statistical optimization of hydrolysis followed by application of sonication at optimum conditions has been adopted. The kinetics of hydrolysis shows a marked 6× increase with sonication, while net sugar yield shows marginal rise of ∼ 20%. The statistical experimental design reveals the hydrolysis process to be enzyme limited. Profile of sugar yield in ultrasound-assisted enzymatic hydrolysis has been analyzed using HCH-1 model coupled with Genetic Algorithm optimization. The trends in the kinetic and physiological parameters of HCH-1 model reveal that sonication enhances enzyme/substrate affinity and reaction velocity of hydrolysis. The product inhibition of enzyme in all forms (free, adsorbed, complexed) also reduces with ultrasound. These effects are attributed to intense micro-convection induced by ultrasound and cavitation in the liquid medium.
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Affiliation(s)
- Shuchi Singh
- 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
| | - Aditya Bhatt
- Department of Chemical Engineering, National Institute of Technology Tiruchirappalli, Tiruchirappalli 620 015, Tamil Nadu, 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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