Valorisation of wheat bran to produce natural pigments using selected microorganisms - Université de Reims Champagne-Ardenne
Article Dans Une Revue Journal of Biotechnology Année : 2021

Valorisation of wheat bran to produce natural pigments using selected microorganisms

Résumé

Pigments are compounds with highly diverse structures and wide uses, which production is increasing worldwide. An eco-friendly method of bioproduction is to use the ability of some microorganisms to ferment on renewable carbon sources. Wheat bran (WB) is a cheap and abundant lignocellulosic co-product of low recalcitrance to biological conversion. Microbial candidates with theoretical ability to degrade WB were first preselected using specific databases. The microorganisms were Ashbya gossypii (producing riboflavin), Chitinophaga pinensis (producing flexirubin), Chromobacterium vaccinii (violacein) and Gordonia alkanivorans (carotenoids). Growth was shown for each on minimal salt medium supplemented with WB at 5 g.L−1. Activities of the main enzymes consuming WB were measured, showing leucine amino-peptidase (up to 8.45 IU. mL−1) and β-glucosidase activities (none to 6.44 IU. mL−1). This was coupled to a FTIR (Fourier Transform Infra-Red) study of the WB residues that showed main degradation of the WB protein fraction for C. pinensis, C. vaccinii and G. alkanivorans. Production of the pigments on WB was assessed for all the strains except Ashbya, with values of production reaching up to 1.47 mg.L−1. The polyphasic approach used in this study led to a proof of concept of pigment production from WB as a cheap carbon source.
Fichier principal
Vignette du fichier
S016816562100208X.pdf (359.49 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03954858 , version 1 (22-08-2023)

Licence

Identifiants

Citer

Mathieu Cassarini, Ludovic Besaury, Caroline Rémond. Valorisation of wheat bran to produce natural pigments using selected microorganisms. Journal of Biotechnology, 2021, 339, pp.81-92. ⟨10.1016/j.jbiotec.2021.08.003⟩. ⟨hal-03954858⟩
87 Consultations
28 Téléchargements

Altmetric

Partager

More