Drężek, Karolina and Kozłowska, Joanna and Detman, Anna and Mierzejewska, Jolanta (2021) Development of a Continuous System for 2-Phenylethanol Bioproduction by Yeast on Whey Permeate-Based Medium. Molecules, 26 (7388). ISSN 1420-3049
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Official URL: https://www.mdpi.com/1420-3049/26/23/7388
Abstract
2-Phenylethanol (2-PE) is an alcohol with a rosy scent and antimicrobial activity, and therefore, it is widely used in the food and cosmetic industries as an aroma and preservative. This work was aimed to draw up a technology for 2-PE bioproduction on whey permeate, which is waste produced by the dairy industry, rich in lactase and proteins. Its composition makes it a harmful waste to dispose of; however, with a properly selected microorganism, it could be converted to a value-added product. Herein, two yeast Kluyveromyces marxianus strains and one Kluyveromyces lactis, isolated from dairy products, were tested for 2-PE production, firstly on standard media and then on whey permeate based media in batch cultures. Thereafter, the 2-PE bioproduction in a continuous system in a 4.8 L bioreactor was developed, and subsequently, the final product was recovered from culture broth. The results showed that the yield of 2-PE production increased by 60% in the continuous culture compared to batch culture. Together with a notable reduction of chemical oxygen demand for whey permeate, the present study reports a complete, effective, and environmentally friendly strategy for 2-PE bioproduction with a space-time yield of 57.5 mg L−1 h−1.
Item Type: | Article |
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Subjects: | Q Science > QD Chemistry Q Science > QR Microbiology T Technology > TP Chemical technology |
Divisions: | Department of Molecular Biology |
ID Code: | 2124 |
Deposited By: | dr inż. Anna Detman |
Deposited On: | 16 Dec 2021 15:27 |
Last Modified: | 16 Dec 2021 15:27 |
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