Next Article in Journal
«Suspects» in Etiology of Endemic Nephropathy: Aristolochic Acid versus Mycotoxins
Previous Article in Journal
Molecular Mechanism of Ochratoxin A Transport in the Kidney
Toxins 2010, 2(6), 1399-1413; doi:10.3390/toxins2061399
Article

Effect of Antioxidant Mixtures on Growth and Ochratoxin A Production of Aspergillus Section Nigri Species under Different Water Activity Conditions on Peanut Meal Extract Agar

,
,
,
 and
*
Departamento de Microbiología e Inmunología, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional Nº 36 Km 601 (5800) Río Cuarto, Córdoba, Argentina
* Author to whom correspondence should be addressed.
Received: 20 April 2010 / Revised: 26 May 2010 / Accepted: 8 June 2010 / Published: 10 June 2010
View Full-Text   |   Download PDF [233 KB, uploaded 10 June 2010]   |  

Abstract

The effect of mixtures of antioxidants butylated hydroxyanisol (BHA) and propyl paraben (PP) on lag phase, growth rate and ochratoxin A (OTA) production by four Aspergillus section Nigri strains was evaluated on peanut meal extract agar (PMEA) under different water activities (aw). The antioxidant mixtures used were: BHA + PP (mM), M1 (0.5 + 0.5), M2 (1.0 + 0.5), M3 (2.5 + 0.5), M4 (0.5 + 1.0), M5 (1.0 + 1.0), M6 (2.5 + 1.0), M7 (5.0 + 2.5) and M8 (10 + 2.5). The mixture M8 completely suppressed mycelial growth for all strains. A significant stimulation in OTA production was observed with mixtures M1 to M5 mainly at the highest aw; whereas M6, M7 and M8 completely inhibited OTA production in all strains assayed; except M6 in A. carbonarius strain (RCP G). These results could enable a future intervention strategy to minimize OTA contamination.
Keywords: butylated hydroxyanisol; propyl paraben; growth parameters; ochratoxin A; Aspergillus carbonarius; A. niger aggregate; peanut meal extract agar butylated hydroxyanisol; propyl paraben; growth parameters; ochratoxin A; Aspergillus carbonarius; A. niger aggregate; peanut meal extract agar
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
SciFeed

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
RIS
MDPI and ACS Style

Barberis, C.; Astoreca, A.; Fernandez-Juri, M.G.; Dalcero, A.M.; Magnoli, C. Effect of Antioxidant Mixtures on Growth and Ochratoxin A Production of Aspergillus Section Nigri Species under Different Water Activity Conditions on Peanut Meal Extract Agar. Toxins 2010, 2, 1399-1413.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

[Return to top]
Toxins EISSN 2072-6651 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert