Limits...
Potential role of oxidative exoenzymes of the extremophilic fungus Pestalotiopsis palmarum BM-04 in biotransformation of extra-heavy crude oil.

Naranjo-Briceño L, Pernía B, Guerra M, Demey JR, De Sisto A, Inojosa Y, González M, Fusella E, Freites M, Yegres F - Microb Biotechnol (2013)

Bottom Line: UV-visible spectrophotometry analysis revealed the oxidation of the petroporphyrins in the asphaltenes fraction of biotreated EHCO.Tolerance assays showed the ability of this fungus to grow up to 50,000 p.p.m. of EHCO and 2000 mM of NaCl.These results suggest that P. palmarum BM-04 is a hopeful alternative to be used in remediation processes in extreme environmental conditions of salinity and EHCO contamination, such as the drilling waste from the OOB.

View Article: PubMed Central - PubMed

Affiliation: Área de Energía y Ambiente, Instituto de Estudios Avanzados (IDEA), Sartenejas, Caracas, 1080, Venezuela.

Show MeSH

Related in: MedlinePlus

Growth percentage of P. palmarum BM-04 in BSM medium with different concentrations of NaCl (grey colour) and EHCO (black colour). Half maximal effective concentration to reduce the 50% of growth (EC50) is showed. Dissimilar letters show significant differences (P ≤ 0.05).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3815938&req=5

fig04: Growth percentage of P. palmarum BM-04 in BSM medium with different concentrations of NaCl (grey colour) and EHCO (black colour). Half maximal effective concentration to reduce the 50% of growth (EC50) is showed. Dissimilar letters show significant differences (P ≤ 0.05).

Mentions: The salinity tolerance assays showed the ability of this fungus to grow up to 2000 mM of NaCl, which define this fungus as halotolerant. NOEC and LOEC were 250 mM and 500 mM, respectively, with a decrease in the rate of growth of 20% for 500 mM, about 60% for 1000 mM and 82% for 2000 mM; showing a value of EC50 close to 580 mM of NaCl (Fig. 4).


Potential role of oxidative exoenzymes of the extremophilic fungus Pestalotiopsis palmarum BM-04 in biotransformation of extra-heavy crude oil.

Naranjo-Briceño L, Pernía B, Guerra M, Demey JR, De Sisto A, Inojosa Y, González M, Fusella E, Freites M, Yegres F - Microb Biotechnol (2013)

Growth percentage of P. palmarum BM-04 in BSM medium with different concentrations of NaCl (grey colour) and EHCO (black colour). Half maximal effective concentration to reduce the 50% of growth (EC50) is showed. Dissimilar letters show significant differences (P ≤ 0.05).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3815938&req=5

fig04: Growth percentage of P. palmarum BM-04 in BSM medium with different concentrations of NaCl (grey colour) and EHCO (black colour). Half maximal effective concentration to reduce the 50% of growth (EC50) is showed. Dissimilar letters show significant differences (P ≤ 0.05).
Mentions: The salinity tolerance assays showed the ability of this fungus to grow up to 2000 mM of NaCl, which define this fungus as halotolerant. NOEC and LOEC were 250 mM and 500 mM, respectively, with a decrease in the rate of growth of 20% for 500 mM, about 60% for 1000 mM and 82% for 2000 mM; showing a value of EC50 close to 580 mM of NaCl (Fig. 4).

Bottom Line: UV-visible spectrophotometry analysis revealed the oxidation of the petroporphyrins in the asphaltenes fraction of biotreated EHCO.Tolerance assays showed the ability of this fungus to grow up to 50,000 p.p.m. of EHCO and 2000 mM of NaCl.These results suggest that P. palmarum BM-04 is a hopeful alternative to be used in remediation processes in extreme environmental conditions of salinity and EHCO contamination, such as the drilling waste from the OOB.

View Article: PubMed Central - PubMed

Affiliation: Área de Energía y Ambiente, Instituto de Estudios Avanzados (IDEA), Sartenejas, Caracas, 1080, Venezuela.

Show MeSH
Related in: MedlinePlus