Title:
Solid Catalyst-Assisted Oxiorganosolv Fractionation of Wheat Straw for Enzymatic and Microbial Conversion to Nutraceuticals
Author(s):
Stefanidis, S.D., Kalogiannis, K.G., Karakoulia, S.A., Asimakopoulou, G., Karnaouri, A., Topakas, E., Lappas, A.A.
Document(s):
Paper
Poster
Abstract:
In this work, the pre-treatment of wheat straw via an acid-free organosolv method was investigated to produce a cellulose-rich pulp. Both non-catalytic and solid catalyst assisted organosolv pre-treatment was studied using Cu and Fe metal oxides, as well as an acidic Y zeolite. The produced pulps were then enzymatically hydrolysed to produce fermentable sugars that were subsequently used as a carbon source for the growth of the Crypthecodinium cohnii (C. cohnii) microalgae and the production omega-3 fatty acids, which are valuable bioactive food additives (nutraceuticals). The results demonstrated that the solid catalysts showed promise for the delignification of wheat straw at low pre-treatment temperature and for the enrichment of the pulp in cellulose. The catalytically-derived pulps also exhibited higher cellulose conversion to glucose via enzymatic hydrolysis, compared to the pulp derived from non-catalytic low-temperature wheat straw pre-treatment. The hydrolysates were successfully utilized for the growth of C. cohnii and the production of omega-3.
Keywords:
biological conversion, catalytic conversion, enzymatic hydrolysis, microalgae, wheat straw, food additives
Topic:
Biomass Conversion to Bio-Based Products and Chemicals
Subtopic:
Processes for bio-based chemicals and materials
Event:
30th European Biomass Conference and Exhibition
Session:
6BV.2.18
Pages:
1122 - 1125
ISBN:
978-88-89407-22-6
Paper DOI:
10.5071/30thEUBCE2022-6BV.2.18
Price:
FREE
