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Title	Waste cooking oil and molasses for the sustainable production of extracellular lipase by Saitozyma flava
ID_Doc	27761
Authors	Donzella, S; Fumagalli, A; Contente, ML; Molinari, F; Compagno, C
Title	Waste cooking oil and molasses for the sustainable production of extracellular lipase by Saitozyma flava
Year	2024
Published	Biotechnology And Applied Biochemistry, 71.0, 4
Abstract	Organic waste valorization is one of the principal goals of the circular economy. Bioprocesses offer a promising approach to achieve this goal by employing microorganisms to convert organic feedstocks into high value products through their metabolic activities. In this study, a fermentation process for yeast cultivation and extracellular lipase production was developed by utilizing food waste. Lipases are versatile enzymes that can be applied in a wide range of industrial fields, from detergent, leather, and biodiesel production to food and beverage manufacturing. Among several oleaginous yeast species screened, Saitozyma flava was found to exhibit the highest secreted lipase activity on pNP-butyrate, pNP-caproate, and pNP-caprylate. The production medium was composed of molasses, a by-product of the sugar industry, which provided nutrients for yeast biomass formation. At the same time, waste cooking oil was employed to induce and enhance extracellular lipase production. After 48 h of process, 20 g/L of yeast biomass and 150 mU/mgdw of lipase activity were achieved, with a productivity of 3 mU/mgdw/h. The purified lipase from S. flava showed optimal performances at temperature 28(degrees)C and pH 8.0, exhibiting a specific activity of 62 U/mg when using p-NPC as substrate.
PDF	https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/bab.2570

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