Production of Biosurfactants by Soil Fungi Isolated from the Amazon Forest

International Journal of Microbiology
Hellen Holanda SenaJoão Vicente Braga de Souza

Abstract

Biosurfactants are surface-active compounds that have sparked interest in recent years because of their environmental advantages over conventional surfactants. The aim of this study was to investigate the production of biosurfactants by soil fungi isolated from the Amazon forest. Fungi colonies were isolated from soil samples and screened for biosurfactant production in submerged fermentation. In addition, the influences of bioprocess factors (carbon source, nitrogen source, pH, and fermentation time) were investigated. Finally, the biosurfactant produced was semipurified and submitted to stability tests. One hundred fungal cultures were obtained from the soil samples, identified by micromorphology, and submitted to screening for biosurfactant production. Sixty-one strains produced biosurfactants. The strain Penicillium 8CC2 showed the highest emulsification index (54.2%). The optimized bioprocess conditions for biosurfactant production by Penicillium 8CC2 were as follows: soybean oil, 20 g/L; yeast extract, 30 g/L; pH 9; duration of 9 days. The semipurified biosurfactant showed stability after heating at 100°C for 60 min and after the addition of 30% NaCl (w/v). Tween 80 (0.2% w/v), a conventional surfactant, was used as the c...Continue Reading

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Citations

Sep 28, 2018·International Journal of Microbiology·Hellen Holanda SenaJoão Vicente Braga de Souza
Aug 24, 2020·Environmental Science and Pollution Research International·Waqar IslamHan Y H Chen
Apr 4, 2021·Biomolecules·Michał PiegzaWojciech Łaba
May 4, 2021·International Journal of Microbiology·Michele Alves SanchesJoão Vicente Braga de Souza
Jun 4, 2021·Environmental Management·Naiara Elisa KrelingLuciane Maria Colla
Aug 14, 2021·Environmental Science and Pollution Research International·Mohammad Daher Hazaimeh, Enas S Ahmed
Aug 24, 2021·Fungal Biology·Farzaneh RoshandelZahra Oraghi Ardebili

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