Conclusions
The utilization of lignocellulosic biomass for bioethanol production
necessitates the production technology to be cost-effective
and environmentally sustainable. Considering the evolution and
need of second generation biofuels, rice straw appears a promising
and potent candidate for production of bioethanol due to its abundant
availability and attractive composition. Biological conversion
of rice straw into fermentable sugars, employing hydrolyzing enzymes
is at present the most attractive alternative due to environmental
concerns. Though there are several hindrances on the way
of developing economically feasible technology due to its complex
nature, high lignin and ash content, several work is going onto develop
an efficient pretreatment method to remove unwanted portion
so as to get readily available sugars and considerable success
has been achieved till date. The available statistics shows that
the need of bioethanol for transport sector could be met by using
rice straw. Approaches in both process engineering and strain engineering
still have to be carried out to circumvent the difficulties of
xylose and glucose co-fermentation and to improve the system
efficiency. A very balanced and intelligent combination of pretreatment,
hydrolysis and fermentation process has to be selected for
maximum efficacy of the process. With the advent of genetically
modified yeast, synthetic hydrolysing enzymes, other sophisticated
technologies and their efficient combination, the process of
bioethanol production employing rice straw will prove to be a feasible
technology in very near future.
ConclusionsThe utilization of lignocellulosic biomass for bioethanol productionnecessitates the production technology to be cost-effectiveand environmentally sustainable. Considering the evolution andneed of second generation biofuels, rice straw appears a promisingand potent candidate for production of bioethanol due to its abundantavailability and attractive composition. Biological conversionof rice straw into fermentable sugars, employing hydrolyzing enzymesis at present the most attractive alternative due to environmentalconcerns. Though there are several hindrances on the wayof developing economically feasible technology due to its complexnature, high lignin and ash content, several work is going onto developan efficient pretreatment method to remove unwanted portionso as to get readily available sugars and considerable successhas been achieved till date. The available statistics shows thatthe need of bioethanol for transport sector could be met by usingrice straw. Approaches in both process engineering and strain engineeringstill have to be carried out to circumvent the difficulties ofxylose and glucose co-fermentation and to improve the systemefficiency. A very balanced and intelligent combination of pretreatment,hydrolysis and fermentation process has to be selected formaximum efficacy of the process. With the advent of geneticallymodified yeast, synthetic hydrolysing enzymes, other sophisticatedtechnologies and their efficient combination, the process ofbioethanol production employing rice straw will prove to be a feasibletechnology in very near future.
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