Cargando…

Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process

Vegetable oils and their derivatives, like biodiesel, are used extensively throughout the world, thus posing an environmental risk when disposed. Toxicity testing using test organisms shows how these residues affect ecosystems. Toxicity tests using earthworms (Eisenia foetida) are widespread because...

Descripción completa

Detalles Bibliográficos
Autores principales: Tamada, Ivo S., Montagnolli, Renato N., Lopes, Paulo R. M., Bidoia, Ederio D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Microbiologia 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3769042/
https://www.ncbi.nlm.nih.gov/pubmed/24031989
http://dx.doi.org/10.1590/S1517-838220120004000042
_version_ 1782283928096210944
author Tamada, Ivo S.
Montagnolli, Renato N.
Lopes, Paulo R. M.
Bidoia, Ederio D.
author_facet Tamada, Ivo S.
Montagnolli, Renato N.
Lopes, Paulo R. M.
Bidoia, Ederio D.
author_sort Tamada, Ivo S.
collection PubMed
description Vegetable oils and their derivatives, like biodiesel, are used extensively throughout the world, thus posing an environmental risk when disposed. Toxicity testing using test organisms shows how these residues affect ecosystems. Toxicity tests using earthworms (Eisenia foetida) are widespread because they are a practical resource for analyzing terrestrial organisms. For phytotoxicological analysis, we used seeds of arugula (Eruca sativa) and lettuce (Lactuca sativa) to analyze the germination of seeds in contaminated soil samples. The toxicological experiment was conducted with four different periods of biodegradation in soil: zero days, 60 days, 120 days and 180 days. The studied contaminants were soybean oil (new and used) and biodiesel (B100). An evaluation of the germination of both seeds showed an increased toxicity for all contaminants as the biodegradation occurred, biodiesel being the most toxic among the contaminants. On the other hand, for the tests using earthworms, the biodiesel was the only contaminant that proved to be toxic. Therefore, the higher toxicity of the sample containing these hydrocarbons over time can be attributed to the secondary compounds formed by microbial action. Thus, we conclude that the biodegradation in soil of the studied compounds requires longer periods for the sample toxicity to be decreased with the action of microorganisms.
format Online
Article
Text
id pubmed-3769042
institution National Center for Biotechnology Information
language English
publishDate 2012
publisher Sociedade Brasileira de Microbiologia
record_format MEDLINE/PubMed
spelling pubmed-37690422013-09-12 Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process Tamada, Ivo S. Montagnolli, Renato N. Lopes, Paulo R. M. Bidoia, Ederio D. Braz J Microbiol Environmental Microbiology Vegetable oils and their derivatives, like biodiesel, are used extensively throughout the world, thus posing an environmental risk when disposed. Toxicity testing using test organisms shows how these residues affect ecosystems. Toxicity tests using earthworms (Eisenia foetida) are widespread because they are a practical resource for analyzing terrestrial organisms. For phytotoxicological analysis, we used seeds of arugula (Eruca sativa) and lettuce (Lactuca sativa) to analyze the germination of seeds in contaminated soil samples. The toxicological experiment was conducted with four different periods of biodegradation in soil: zero days, 60 days, 120 days and 180 days. The studied contaminants were soybean oil (new and used) and biodiesel (B100). An evaluation of the germination of both seeds showed an increased toxicity for all contaminants as the biodegradation occurred, biodiesel being the most toxic among the contaminants. On the other hand, for the tests using earthworms, the biodiesel was the only contaminant that proved to be toxic. Therefore, the higher toxicity of the sample containing these hydrocarbons over time can be attributed to the secondary compounds formed by microbial action. Thus, we conclude that the biodegradation in soil of the studied compounds requires longer periods for the sample toxicity to be decreased with the action of microorganisms. Sociedade Brasileira de Microbiologia 2012 2012-06-01 /pmc/articles/PMC3769042/ /pubmed/24031989 http://dx.doi.org/10.1590/S1517-838220120004000042 Text en © Sociedade Brasileira de Microbiologia http://creativecommons.org/licenses/by-nc/3.0/ All the content of the journal, except where otherwise noted, is licensed under a Creative Commons License
spellingShingle Environmental Microbiology
Tamada, Ivo S.
Montagnolli, Renato N.
Lopes, Paulo R. M.
Bidoia, Ederio D.
Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process
title Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process
title_full Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process
title_fullStr Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process
title_full_unstemmed Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process
title_short Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process
title_sort toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process
topic Environmental Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3769042/
https://www.ncbi.nlm.nih.gov/pubmed/24031989
http://dx.doi.org/10.1590/S1517-838220120004000042
work_keys_str_mv AT tamadaivos toxicologicalevaluationofvegetableoilsandbiodieselinsoilduringthebiodegradationprocess
AT montagnollirenaton toxicologicalevaluationofvegetableoilsandbiodieselinsoilduringthebiodegradationprocess
AT lopespaulorm toxicologicalevaluationofvegetableoilsandbiodieselinsoilduringthebiodegradationprocess
AT bidoiaederiod toxicologicalevaluationofvegetableoilsandbiodieselinsoilduringthebiodegradationprocess