Synthesis of Industrially Useful Phenolic Compounds Esters by Means of Biocatalysts Obtained Along with Waste Fish Oil Utilization

Bartłomiej Zieniuk, Małgorzata Wołoszynowska, Ewa Białecka-Florjańczyk and Agata Fabiszewska
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Bartłomiej Zieniuk: Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 159c owoursynowska St., 02-776 Warsaw, Poland
Małgorzata Wołoszynowska: Analytical Department, Łukasiewicz Research Network—Institute of Industrial Organic Chemistry, 6 Annopol St., 03-236 Warsaw, Poland
Ewa Białecka-Florjańczyk: Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 159c owoursynowska St., 02-776 Warsaw, Poland
Agata Fabiszewska: Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 159c owoursynowska St., 02-776 Warsaw, Poland

Sustainability, 2020, vol. 12, issue 14, 1-18

Abstract: The purpose of the study was to utilize the waste fish oil after fish smoking process in Y. lipolytica yeast batch cultures in order to assess its valorization to whole-cell biocatalysts with lipolytic properties. Almost 90% of the waste carbon source in medium was used and batch cultures of Y. lipolytica W29 were characterized with biomass yield of 18.59 g/dm 3 and lipolytic activity of 53.41 U/g. The yeast biomass was used as a whole-cell biocatalyst in the synthesis of esters of selected phenolic compounds (acetates of 2-phenylethanol, tyrosol (2-(4-hydroxyphenyl) ethanol) and 3-phenyl-1-propanol, and ethyl esters of phenylacetic, 4-hydroxyphenylacetic, 3-phenylpropanoic, and 3-(4-hydroxyphenyl) propanoic acids). Y. lipolytica biomass was able to catalyze esterification of 3-phenylpropanoic acid (conversion of 95% after 24 h), but conversion of other acids to their esters was very weak, and in the case of transesterification of aromatic alcohols with vinyl acetate, conversions were 27%–63% after 24 h. Synthesized esters were tested prior potential activities as food additives. Esters of hydroxylated phenolic compounds showed activity of 2.5 mg/mL against Klebsiella pneumoniae and Citrobacter freundii , exhibited similar antioxidant properties to their precursors, and were better soluble in lipids, which increases the possibility of their use in the food industry.

Keywords: lipases; phenolic compounds esters; waste fish oil; whole-cell catalysis; Yarrowia lipolytica (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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