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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

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Received: 20 April 2010; in revised form: 26 May 2010 / Accepted: 8 June 2010 / Published: 10 June 2010
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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 which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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.

AMA Style

Barberis C, Astoreca A, Fernandez-Juri MG, Dalcero AM, 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(6):1399-1413.

Chicago/Turabian Style

Barberis, Carla; Astoreca, Andrea; Fernandez-Juri, María Guillermina; Dalcero, Ana María; Magnoli, Carina. 2010. "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 2, no. 6: 1399-1413.


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