Bio-oil extraction of Jatropha curcas with ionic liquid co-solvent: Fate of biomass protein. (February 2017)

• Record Type: Journal Article
• Authors: Severa, Godwin; Edwards, Melisa; Cooney, Michael J.
• Is Part Of: Bioresource technology. Volume 226(2017)
• Page Start: 255
• Page End: 261
• Publication Date: 2017-02
• Subjects: Bio-oil bearing biomass -- Jatropha -- Ionic liquid co-solvents -- Protein extraction; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2016.11.125
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Oil-seed biomass protein has been tracked through a multi-phase extraction process. Ionic liquid – methanol co-solvent extracted lipid, phorbol esters, but not protein. Cost of solvent recovery must be addressed if commercialization is to be realized. Abstract: The fate of oil-seed biomass protein has been tracked through all steps of a multi-phase extraction process using an ionic liquid based co-solvent system previously demonstrated to extract bio-oil and phorbol esters and to recover fermentable sugars from Jatropha oil seed. These analyses, however, did not address the fate of biomass protein. This work demonstrated that the majority of protein (∼86%) tracked with the biomass with the balance lost to co-solvent (∼12%) and methanol (∼2%) washes. A significant portion of the ionic liquid remained with the treated biomass and required aggressive methanol washes to recover. A system analysis showed a net-positive energy balance and thus the potential of this system to produce both bio-oil and protein-rich toxin-free biomass. While these results further support Jatropha as an oil seed crop, the additional costs of solvent recovery will need to be addressed if commercialization is to be realized.