Screening of yeasts for the production of 2-phenylethanol (rose aroma) in organic waste-based media

• DOI: 10.1111/lam.12835
• Publication Date: 2017-12-09T23:26:40Z
• Authors: K. Chreptowicz; M.K. Sternicka; P.D. Kowalska; J. Mierzejewska
• Keywords: Bioproduction; Aroma compound

In this study, we isolated 28 yeast strains from samples of plant material and fermented food evaluated the possibility efficient production 2‐phenylethanol (2‐PE) in organic waste‐based media supplemented with l‐phenylalanine (l‐Phe). We used whey, a by‐product milk processing, as base for media, either glucose or three by‐products sugar beet processing fermentable carbon source. Ten newly were capable producing over 2 g l−1 2‐PE through l‐Phe biotransformation batch mode standard medium. Among them, selected eight range 1·17–3·28 72 h cultures shaking flasks whey‐based media. The assigned to five species Meyerozyma caribbica, Metschnikowia chrysoperlae, guilliermondii, Pichia fermentans Saccharomyces cerevisiae. While S. cerevisiae is known be promising producer 2‐PE, four latter are poorly studied on application. Results presented here better than other reported values unmodified strains. Therefore, it seems that whey might good feedstock bioproduction. 2‐Phenylethanol an alcohol pleasant rosy scent, which commonly food, fragrance cosmetic industries aroma compound preservative. Promising sources yeasts, but still biotechnological route has not been economically competitive chemical synthesis. Thus, first challenging goal develop identification highly productive yeasts cheap feedstock. This study demonstrates time by could pave way development cheaper method