• Abstract
• Full-Text PDF [233 KB]
• Full-Text XML
• Article Versions Notes

• Article Statistics
• PubMed/Medline
• Google Scholar
• Order Reprints

• Cite this article
• Export to BibTeX
• Export to EndNote

• [+] on DOAJ
• Barberis, C
• Astoreca, A
• Fernandez-Juri, M
• Dalcero, A
• Magnoli, C
• [+] on Google Scholar
• Barberis, C
• Astoreca, A
• Fernandez-Juri, M
• Dalcero, A
• Magnoli, C
• [+] on PubMed
• Barberis, C
• Astoreca, A
• Fernandez-Juri, M
• Dalcero, A
• Magnoli, C

•  CiteULike
•  Facebook
•  Mendeley
•  Twitter

This article is

• freely available
• re-usable

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

Carla Barberis, Andrea Astoreca, María Guillermina Fernandez-Juri, Ana María Dalcero and Carina Magnoli*

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; in revised form: 26 May 2010 / Accepted: 8 June 2010 / Published: 10 June 2010

Download PDF Full-Text [233 KB, uploaded 10 June 2010 11:05 CEST]

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 (a_w). 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 a_w; 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

Article Statistics

Cite This Article