49 / 50
Page 96
Notes:
conferenceseries
.com
Volume 9
Journal of Bioremediation & Biodegradation
ISSN: 2155-6199
Biofuel Congress 2018 &
Biomass 2018
September 04-06, 2018
JOINT EVENT
September 04-06, 2018 | Zurich, Switzerland
13
th
Global Summit and Expo on
Biomass and Bioenergy
&
12
th
World Congress on
Biofuels and Bioenergy
Production of ethanol and longer chain alcohols by fermentation
Johann Orlygsson
University of Akureyri, Iceland
T
he use of fermentative microorganisms for efficient C
2
-C
5
alcohol production from renewable feedstocks has been
a subject of intense investigation over recent decades. While the physiology of microorganisms involved in alcohol
production from first generation feedstocks is well established, the utilization of microorganisms for the production of second
generation bioalcohols from complex biomass, such as lignocellulose, remains challenging. At present, there are no “all in
one” bioprocessing organisms that have been used on an industrial scale capable of both complex biomass conversions to
fermentable substrates and fermentation to alcohols. Extensive investigations on bioalcohol-producing organisms and related
processes have targeted challenges ranging from the conversion of feedstock biomass to fermentable substrates, process design,
and organism improvements. Recent advances in the production of liquid fuel carriers such as ethanol, propanol, and butanol as
well as branched-chain alcohols will be the subject of this presentation. The main emphasis is on thermophilic bacteria capable
of producing ethanol with high titers as well as branched-chain alcohols (isopropanol, 2-methylbutanol and 3-methylbutanol)
from branched-chain amino acids.
Recent Publications
1. Carvalho DMde, Queiroz JHde, Colodette JL (2017) Hydrothermal and acid pretreatments improve ethanol production
from lignocellulosic biomasses. BioResources 12(2):3088‐3107.
2. Carvalho DMde, Colodette JL (2017) Comparative study of acid hydrolysis of lignin and polysaccharides in biomasses.
BioResources 12(4):6907‐6923.
3. Carvalho DMde, Queiroz JHde, Colodette JL (2016) Assessment of alkaline pretreatment for the production of biethanol
from eucalyptus, sugarcane bagasse and sugarcane straw. Industrial Crops and Products 94:932‐941.
4. Carvalho DMde, Sevastyanova O, Queiroz JHde, Colodette JL (2016) Cold alkaline extraction as a pretreatment for
bioethanol production from eucalyptus, sugarcane bagasse and sugarcane straw. Energy Conversion and Management
124:315‐324.
Biography
Johann Orlygsson has expertise in physiology of thermophilic anaerobic bacteria with main emphasis on bioethanol and biohydrogen production. Additionally,
recent investigations have been towards producing high value – low volume compounds like 1,2-propandiol using extremophiles like
Caldicellulosiruptor
and
branched-chain alcohols with Thermoanaerobacter and Caldanaerobacter species.
jorlygs@unak.isJohann Orlygsson, J Bioremediat Biodegrad 2018, Volume 9
DOI: 10.4172/2155-6199-C1-014