Communication Dans Un Congrès Année : 2025

Valorisation of acetic acid-rich forced endive root juice to produce volatile aroma compounds using Kluyveromyces marxianus

Résumé

The valorisation of agro-industrial residues is increasingly essential due to the huge volumes of agro-waste generated yearly [1,2]. Rising demand for natural products alongside strict regulations against non-biobased molecules in food, fragrance, and cosmetics [3] further supports biomass valorisation. Converting these wastes into valuable products often requires extraction and hydrolysis, processes that release fermentable sugars but also inhibitory compounds like acetic acid, which can be detrimental to K. marxianus at elevated concentrations [4]. Some yeast species can internalise extracellular acetic acid to synthesize acetyl-CoA, a key precursor for ester production [5]. In this study, we explore the bioconversion of acetic acid-rich forced endive root (FER) juice extracted via pulsed electric field (PEF)-assisted diffusion into aroma compounds using K. marxianus. Particular attention is given to the yeast’s tolerance to acetic acid and its capacity to produce isoamyl acetate.

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Dates et versions

hal-05381348 , version 1 (25-11-2025)

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  • HAL Id : hal-05381348 , version 1

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Emmanuel Omachoko Anthony, Ana-Karen Sánchez-Castañeda, Claire Saulou-Bérion, Marwen Moussa. Valorisation of acetic acid-rich forced endive root juice to produce volatile aroma compounds using Kluyveromyces marxianus. 1st International Yeast in Bioeconomy Conference (YBC2025), Mohamed Koubaa; Elia Tomás Pejó, Oct 2025, Compiègne, France. ⟨hal-05381348⟩
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