title: Valorization of the aqueous phase obtained from hydrothermally treated Dunaliella salina remnant biomass.
abstract: Up to 90% of Dunaliella salina biomass remains unused after extraction of the main product β-carotene. The potential of mild hydrothermal liquefaction (HTL) to exploit this biomass as a source of valuable by-products was assessed. The results indicate that 80% of the remnant was converted into glucose by mild HTL (100°C, 0min). The recovered glucose was successfully used as a carbon source to cultivate biotechnologically relevant microorganisms, namely Chlorella vulgaris, Escherichia coli and Saccharomyces cerevisiae. Furthermore, the analysis of energy demand and operating costs confirms the beneficial effect of mild liquefaction on the overall process economics of algal β-carotene production.
authors.affiliation: Max Planck Institute for Dynamics of Complex Technical Systems, Process Systems Engineering, Sandtorstr. 1, 39106 Magdeburg, Germany.
authors.forename: Kristin
authors.initials: K
authors.lastname: Pirwitz
authors.affiliation: Max Planck Institute for Dynamics of Complex Technical Systems, Process Systems Engineering, Sandtorstr. 1, 39106 Magdeburg, Germany. Electronic address: rihko@mpi-magdeburg.mpg.de.
authors.forename: Liisa
authors.initials: L
authors.lastname: Rihko-Struckmann
authors.affiliation: Max Planck Institute for Dynamics of Complex Technical Systems, Process Systems Engineering, Sandtorstr. 1, 39106 Magdeburg, Germany; Otto-von-Guericke-University Magdeburg, Process Systems Engineering, Universitätsplatz 2, 39106 Magdeburg, Germany.
authors.forename: Kai
authors.initials: K
authors.lastname: Sundmacher
mesh_terms: D000838:Anions; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002244:Carbon / Q000494:pharmacology; D002412:Cations; D000460:Chlorophyta / Q000187:drug effects / Q000378:metabolism*; D005947:Glucose / Q000032:analysis; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry*
chemical_list: D000838:Anions; D002412:Cations; D014867:Water; D002244:Carbon; D005947:Glucose
keywords: By-product; Carbon source; Dunaliella; Hydrothermal liquefaction; Process analysis