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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Cariño, J. C. Earl D. Hallare, Arnold V. Ruiz, Paulo Lorenzo S. |
Description | Author Affiliation: Hallare AV ( Department of Biology, CAS, University of the Philippines, Manila, Padre Faura St., Manila, 1000, Philippines, avhallare@post.upm.edu.ph.) |
Abstract | Consequent to the growing demand for alternative sources of energy, the seeds from Jatropha curcas remain to be the favorite for biodiesel production. However, a significant volume of the residual organic mass (seed cake) is produced during the extraction process, which raises concerns on safe waste disposal. In the present study, we assessed the toxicity of J. curcas seed cake using the zebrafish (Danio rerio) embryotoxicity test. Within 1-h post-fertilization (hpf), the fertilized eggs were exposed to five mass concentrations of J. curcas seed cake and were followed through 24, 48, and 72 hpf. Toxicity was evaluated based on lethal endpoints induced on zebrafish embryos namely egg coagulation, non-formation of somites, and non-detachment of tail. The lowest concentration tested, 1 g/L, was not able to elicit toxicity on embryos whereas 100 % mortality (based also on lethal endpoints) was recorded at the highest concentration at 2.15 g/L. The computed LC50 for the J. curcas seed cake was 1.61 g/L. No further increase in mortality was observed in the succeeding time points (48 and 72 hpf) indicating that J. curcas seed cake exerted acute toxicity on zebrafish embryos. Sublethal endpoints (yolk sac and pericardial edema) were noted at 72 hpf in zebrafish embryos exposed to higher concentrations. The observed lethal endpoints induced on zebrafish embryos were discussed in relation to the active principles, notably, phorbol esters that have remained in the seed cake even after extraction. |
ISSN | 09441344 |
Issue Number | 9 |
Volume Number | 21 |
e-ISSN | 16147499 |
Journal | Environmental Science and Pollution Research |
Language | English |
Publisher | Springer |
Publisher Date | 2014-05-01 |
Publisher Place | Germany |
Access Restriction | Subscribed |
Subject Keyword | Biofuels Toxicity Embryo, Nonmammalian Drug Effects Jatropha Chemistry Refuse Disposal Methods Zebrafish Embryology Animals Analysis Phorbol Esters Toxicity Tests Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
Content Type | Text |
Resource Type | Article |
Subject Domain (in MeSH) | Animal Structures Eukaryota Organic Chemicals Complex Mixtures Investigative Techniques Environment and Public Health |
Subject | Pollution Environmental Chemistry Health, Toxicology and Mutagenesis Medicine |
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