Valorization of agro-industrial wastes towards the production of rhamnolipids

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Gudina, EJ (Author) Other; Rodrigues, AI (Author) Other; Victor de Freitas (Author) FCUP; Azevedo, Z (Author) Other; Teixeira, JA (Author) Other; Rodrigues, LR (Author) Other

Journal

Title: Bioresource Technology

Vol. 212

Pages: 144-150

ISSN: 0960-8524

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 93 Citations

Scopus - 118 Citations

Other information

Authenticus ID: P-00K-CK1

DOI: 10.1016/j.biortech.2016.04.027

Abstract (EN): In this work, oil mill wastewater (OMW), a residue generated during olive oil extraction, was evaluated as an inducer of rhamnolipid production. Using a medium containing as sole ingredients corn steep liquor (10%, v/v), sugarcane molasses (10%, w/v) and OMW (25%, v/v), Pseudomonas aeruginosa #112 produced 4.5 and 5.1 g of rhamnolipid per liter in flasks and reactor, respectively, with critical micelle concentrations as low as 13 mg/l. Furthermore, in the medium supplemented with OMW, a higher proportion of more hydrophobic rhamnolipid congeners was observed comparing with the same medium without OMW. OMW is a hazardous waste which disposal represents a serious environmental problem; therefore, its valorization as a substrate for the production of added-value compounds such as rhamnolipids is of great interest. This is the first report of rhamnolipid production using a mixture of these three agro-industrial by-products, which can be useful for the sustainable production of rhamnolipids.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7