alexa Gasoline-Degrading Yeasts |Journal Of Petroleum And Environmental Biotechnology

Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Gasoline-Degrading Yeasts

Strategies for controlling environmental contamination with petroleum and its derivatives have been the subject of various studies over the past three decades. There is a great diversity of microorganisms able to utilize hydrocarbons as a sole carbon source, including bacteria, yeasts and molds. Hydrocarbon-degrading yeasts were isolated from three sites contaminated with products of refined petroleum originating from an oily residue treatment Brazilian company. A selective enrichment technique was used by supplementing medium with gasoline, which resulted in eleven isolates; two identified as Rhodotorula mucilaginosa, one as Rhodosporidium diobovatum, four as Meyerozyma (Pichia) guilliermondii, two as Wickerhamia sp., and two as Meyerozyma sp. The strains were evaluated for their growth capacity in medium containing 1% (v/v) gasoline, kerosene or lubricating oil as the only carbon source; the largest values for cellular biomass and growth rates (μ) were observed with gasoline supplementation. The strains were tolerant to aromatic (toluene and xylene) and aliphatic (hexene and n-heptane) compounds, which are part of the composition of gasoline, at concentrations up to 30 mM toluene (0.3% v/v), 20 mM xylene (0.25% v/v), 80 mM n-heptane (1.17% v/v) and 100 mM hexane (1.33% v/v). The R. mucilaginosa S47 and Meyerozyma sp. SP1 strains showed the greatest degradation percentages of gasoline, and have the potential to be used in the bioremediation of gasoline-contaminated environments.
  • Share this page
  • Facebook
  • Twitter
  • LinkedIn
  • Google+
  • Pinterest
  • Blogger

Last date updated on November, 2020