Production of ethanol, lipid and lactic acid from mixed agrowastes hydrolysate
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Date
2023
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Abstract
To combat the shortage of single agro-residue and overcome the
problem of seasonal availability, it is beneficial to use mixture of ligno cellulosic biomasses. In the present study, efforts were made to use
mixed lignocellulosic biomass for production of bioethanol, along
with microbial lipids and lactic acid. Upon enzymatic hydrolysis of
mixed biomass at varied proportions it was observed that mixture of
paddy straw and jute in the ratio 3:1 resulted in best sugar yield
(41.50 g/L) at 10% substrate loading. Ethanolic fermentation of mixed
substrate hydrolysate by thermotolerant yeast, Saccharomyces cerevi siae JRC6 resulted in 8.39 g/L of ethanol. To maintain sustainability
and economic impact, oleaginous yeast (Trichosporon mycotoxinivor ans S2) and lactic acid bacteria (Lactobacillus plantarum LP-9) were
used for lipid production (14.5 g/L) and lactic acid production
(11.08 g/L), respectively. Therefore, this study explored the potential
of mixed lignocellulosic biomass to be exploited for production of
various value-added products.