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Article Dans Une Revue Bioresource Technology Année : 2020

Polyethyleneimine as a tool for compounds fractionation by flocculation in a microalgae biorefinery context

Fatou Ba
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Alexandrine Foissard
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André Lebert
Gholamreza Djelveh
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Céline Laroche

Résumé

In the context of emerging biorefinery for microalgae, polyethyleneimine (PEI), has been tested in order to achieve separation of fat-soluble and water-soluble compounds from Haematococcus pluvialis. Several parameters were taken into account (ratio between sample and PEI, pH, and ionic strength) and 2 conditions (0.075% PEI pH 7.4, and 0.100% PEI pH8.5) were studied for up-scalability, with a recovery of flocculated compounds (lipids and pigments), and a complete characterization of both phases. Using 0.075% PEI, pH7.4, 100% sugars and 89.8% proteins were retained in the supernatant, but some trace of beta-carotene were also detected. For 0.100% PEI, pH 8.5, a loss in proteins content was highlighted (61.2% proteins retained), but no residual lipids or pigments were detected. PEI could therefore be considered as an efficient method to fractionate fat-soluble and water-soluble compounds from microalgae.
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hal-03082384 , version 1 (22-08-2022)

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Paternité - Pas d'utilisation commerciale

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Fatou Ba, Alexandrine Foissard, André Lebert, Gholamreza Djelveh, Céline Laroche. Polyethyleneimine as a tool for compounds fractionation by flocculation in a microalgae biorefinery context. Bioresource Technology, 2020, 315, pp.123857. ⟨10.1016/j.biortech.2020.123857⟩. ⟨hal-03082384⟩
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