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Fermentation
Volume 11
Issue 2
10.3390/fermentation11020074
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Article

Identification of Corn Chaff as an Optimal Substrate for the Production of Rhamnolipids in Pseudomonas aeruginosa Fermentations

by
Adriana Bava
1,
Sara Carnelli
1,
Mentore Vaccari
2,
Trello Beffa
3 and
Fabrizio Beltrametti
1,*
1
BioC-CheM Solutions S.r.l., 21040 Gerenzano, VA, Italy
2
Dipartimento di Ingegneria Civile, Architettura, Territorio, Ambiente e di Matematica (DICATAM), University Degli Studi of Brescia, 25121 Brescia, BS, Italy
3
MADEP S.A., Via Sacerdote Caroni 2, CH-6862 Rancate, Switzerland
*
Author to whom correspondence should be addressed.
Fermentation 2025, 11(2), 74; https://doi.org/10.3390/fermentation11020074 (registering DOI)
Submission received: 18 December 2024 / Revised: 17 January 2025 / Accepted: 20 January 2025 / Published: 3 February 2025
(This article belongs to the Special Issue Bioconversion of Biomass for Effective Production of Biofuels as Well as Biobased Chemicals and Materials)
Review Reports Versions Notes

Abstract

Waste biomass deriving from agricultural activities has different destinations depending on the possibility of applying it to specific processes. As the waste biomass is abundant, cheap, and generally safe, it can be used for several applications, biogas production being the most relevant from the quantitative point of view. In this study, we have used a set of agricultural by-products (agro-waste) deriving from the post-harvest treatment of cereals and legumes as the growth substrate for selected biosurfactant-producing microbial strains. The agricultural by-products were easily metabolized and highly effective for the growth of microorganisms and the production of rhamnolipids and surfactin by Pseudomonas aeruginosa and Bacillus subtilis, respectively. In particular, the use of corn chaff (“bee-wings”) was suitable for the production of rhamnolipids. Indeed, in corn-chaff-based media, rhamnolipids yields ranged from 2 to 18 g/L of fermentation broth. This study demonstrated that the use of waste raw materials could be applied to reduce the carbon footprint of the production of biosurfactants without compromising the possibility of having a suitable fermentation medium for industrial production.
Keywords: rhamnolipid; surfactin; Pseudomonas; Bacillus; biosurfactants; agro-waste; corn chaff rhamnolipid; surfactin; Pseudomonas; Bacillus; biosurfactants; agro-waste; corn chaff

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MDPI and ACS Style

Bava, A.; Carnelli, S.; Vaccari, M.; Beffa, T.; Beltrametti, F. Identification of Corn Chaff as an Optimal Substrate for the Production of Rhamnolipids in Pseudomonas aeruginosa Fermentations. Fermentation 2025, 11, 74. https://doi.org/10.3390/fermentation11020074

AMA Style

Bava A, Carnelli S, Vaccari M, Beffa T, Beltrametti F. Identification of Corn Chaff as an Optimal Substrate for the Production of Rhamnolipids in Pseudomonas aeruginosa Fermentations. Fermentation. 2025; 11(2):74. https://doi.org/10.3390/fermentation11020074

Chicago/Turabian Style

Bava, Adriana, Sara Carnelli, Mentore Vaccari, Trello Beffa, and Fabrizio Beltrametti. 2025. "Identification of Corn Chaff as an Optimal Substrate for the Production of Rhamnolipids in Pseudomonas aeruginosa Fermentations" Fermentation 11, no. 2: 74. https://doi.org/10.3390/fermentation11020074

APA Style

Bava, A., Carnelli, S., Vaccari, M., Beffa, T., & Beltrametti, F. (2025). Identification of Corn Chaff as an Optimal Substrate for the Production of Rhamnolipids in Pseudomonas aeruginosa Fermentations. Fermentation, 11(2), 74. https://doi.org/10.3390/fermentation11020074

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