Ultrasound enhanced ethanol production from Parthenium hysterophorus: A mechanistic investigation

Singh, Shuchi; Sarma, Shyamali; Agarwal, Mayank Mohan; Goyal, Arun

doi:10.1016/j.biortech.2014.12.038

Cited by 36 publications

(6 citation statements)

References 32 publications

(15 reference statements)

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“…If microorganisms have evolved responses to environmental sounds, the periodic nature of these sounds may be an important factor in producing responses. Our results also contrast studies that have reported effects from the application of ultrasound sonication, including effects on S. cerevisiae during fermentation [35,36]. It will be interesting to determine whether this is because of differences between audible sound and ultrasound, or because of other causes.…”

Section: Discussioncontrasting

confidence: 68%

Direct liquid transmission of sound has little impact on fermentation performance in Saccharomyces cerevisiae

et al. 2023

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Sound is a physical stimulus that has the potential to affect various growth parameters of microorganisms. However, the effects of audible sound on microbes reported in the literature are inconsistent. Most published studies involve transmitting sound from external speakers through air toward liquid cultures of the microorganisms. However, the density differential between air and liquid culture could greatly alter the sound characteristics to which the microorganisms are exposed. In this study we apply white noise sound in a highly controlled experimental system that we previously established for transmitting sound underwater directly into liquid cultures to examine the effects of two key sound parameters, frequency and intensity, on the fermentation performance of a commercial Saccharomyces cerevisiae ale yeast growing in a maltose minimal medium. We performed these experiments in an anechoic chamber to minimise extraneous sound, and find little consistent effect of either sound frequency or intensity on the growth rate, maltose consumption, or ethanol production of this yeast strain. These results, while in contrast to those reported in most published studies, are consistent with our previous study showing that direct underwater exposure to white noise sound has little impact on S. cerevisiae volatile production and sugar utilization in beer medium. Thus, our results suggest the possibility that reported microorganism responses to sound may be an artefact associated with applying sound to cultures externally via transmission through air.

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Section: Discussioncontrasting

confidence: 68%

Direct liquid transmission of sound has little impact on fermentation performance in Saccharomyces cerevisiae

et al. 2023

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“…31 The review articles on biomass utilization are mainly based on (1) ultrasound-assisted biological conversion of biomass and waste materials to biofuels; 32 (2) lignin conversion to highvalue polymeric materials; 33 (3) bio-based bioplastics; 34 (4) lignin conversion to low-molecular-weight aromatics; 35 (5) conversion of cellulose into key platform chemicals; 36 (6) converting biomass to biofuels, 37,38 renewable chemicals, 37,39 and fermentable sugars 40 in SCW; (7) hydrogen production from biomass and biomass gasification in SC-H 2 O; 41,42 (8) ultrasound enhanced ethanol production from Parthenium hysterophorus. 43 The articles or reports on biomass cascade utilization are mainly focused on (1) strategies for a more efficient cascade utilization of biomass; 44 (2) barriers to cascading biomass use and policy responses; 45 (3) definitions, policies Scheme 1 Cascade utilization of lignocellulosic biomass.…”

Section: Suojiang Zhangmentioning

confidence: 99%

Cascade utilization of lignocellulosic biomass to high-value products

et al. 2019

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“…Ultrasonication has also been shown to enhance ethanol fermentation processes by increasing transport through the cell membrane and increasing enzymatic hydrolysis with strong micro-convection [ 37 – 40 ]. Recent studies have found that it could enhance the utilisation of substrate for cell growth, reduce the inhibition by substrate and decrease the specific death rate of cells leading to an increase of ethanol yield from 0.149 to 0.166 g g −1 of raw biomass [ 41 ].…”

Section: Physical Mechanism Of Ultrasound Assisted Processes For Biofmentioning

confidence: 99%

Ultrasonic intensification as a tool for enhanced microbial biofuel yields

Naveena

Armshaw

Pembroke

2015

Biotechnol Biofuels

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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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Ultrasound enhanced ethanol production from Parthenium hysterophorus: A mechanistic investigation

Cited by 36 publications

References 32 publications

Direct liquid transmission of sound has little impact on fermentation performance in Saccharomyces cerevisiae

Direct liquid transmission of sound has little impact on fermentation performance in Saccharomyces cerevisiae

Cascade utilization of lignocellulosic biomass to high-value products

Ultrasonic intensification as a tool for enhanced microbial biofuel yields

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