A New Biosurfactant/Bioemulsifier from Gordonia alkanivorans Strain 1B: Production and Characterization

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Silva, TP (Author) FCUP; Paixao, SM (Author) Other; Tavares, J (Author) Other; Gil, CV (Author) Other; Torres, CAV (Author) Other; Freitas, F (Author) Other; Alves, L (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: PROCESSES

Vol. 10

ISSN: 2227-9717

Indexing

ISI Web of Knowledge - 7 Citations

Scopus

Other information

Authenticus ID: P-00W-J5X

DOI: 10.3390/pr10050845

Abstract (EN): Biosurfactants and bioemulsifiers (BS/BE) are naturally synthesized molecules, which can be used as alternatives to traditional detergents. These molecules are commonly produced by microorganisms isolated from hydrocarbon-rich environments. Gordonia alkanivorans strain 1B was originally found in such an environment, however little was known about its abilities as a BS/BE producer. The goal of this work was to access the potential of strain 1B as a BS/BE producer and perform the initial characterization of the produced compounds. It was demonstrated that strain 1B was able to synthesize lipoglycoprotein compounds with BS/BE properties, both extracellularly and adhered to the cells, without the need for a hydrophobic inducer, producing emulsion in several different hydrophobic phases. Using a crude BS/BE powder, the critical micelle concentration was determined (CMC = 16.94 mg/L), and its capacity to reduce the surface tension to a minimum of 35.63 mN/m was demonstrated, surpassing many commercial surfactants. Moreover, after dialysis, emulsification assays revealed an activity similar to that of Triton X-100 in almond and sunflower oils. In benzene, the E-24 value attained was 83.45%, which is 30% greater than that of the commercial alternative. The results obtained highlight for the presence of promising novel BS/BE produced by strain 1B.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 18