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Valorization of Oil Cakes in Two-Pot Lactone Biosynthesis Process
Jolanta Małajowicz1, Agata Fabiszewska1, Bartłomiej Zieniuk1
1Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, Str. Nowoursynowska 159C, 02-776 Warsaw, Poland.
Foods (Basel, Switzerland)
|January 25, 2025
Summary
This study demonstrates the potential of valorizing oil cakes, a biomass waste, into valuable products. Rapeseed cake was successfully used to biosynthesize GDDL, a cyclic ester, showcasing circular economy principles in food waste management.
Area of Science:
- Biotechnology
- Biochemistry
- Sustainable Chemistry
Background:
- Oil cakes are abundant biomass wastes from oilseed processing.
- Their rich composition, including lipids and proteins, offers potential for valorization beyond animal feed.
- Biotechnological applications are emerging for these valuable raw materials.
Purpose of the Study:
- To investigate the valorization of oil cakes through biosynthesis of GDDL (a cyclic ester with a creamy-peach aroma).
- To evaluate the feasibility of using the lipid fraction or raw oil cakes in a two-pot biotransformation process.
- To explore the application of circular economy principles in food processing waste management.
Main Methods:
- Physicochemical analysis and fatty acid profiling of five oil cake types (hemp, rapeseed, safflower, camelina, flax).
- Selection of rapeseed cake due to high oleic acid content (>62%) and availability.
- A three-step, two-pot biotransformation process: hydrolysis, hydration (lactic acid bacteria), and β-oxidation (Yarrowia yeast).
Main Results:
- Successful biosynthesis of GDDL from rapeseed cake was achieved.
- Approximately 1.7 g of GDDL/dm³ was produced via the two-pot biotransformation process.
- The study confirmed the potential for waste valorization and identified areas for process optimization.
Conclusions:
- Oil cakes can be effectively valorized into valuable compounds like GDDL.
- The developed biotransformation process offers a sustainable route for food waste management.
- This research exemplifies the practical application of circular economy in the food industry.
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