RT Journal Article
T1 Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
A1 Gil Serna, Jessica
A1 Patiño Álvarez, Aurora Belén
A1 Cortes, Laura
A1 González Jaén, María Teresa
A1 Vázquez Estévez, María Covadonga Inmaculada
AB Aspergillus steynii and Aspergillus westerdijkiae are the main ochratoxin A (OTA) producing species of Aspergillus section Circumdati. Due to its recent description, few data are available about the influence of cophysiological factors on their growth and OTA production profiles. In this work, the effect of temperature (20, 24 and 28ºC) and water activity (aw) (0.928, 0.964 and 0.995) on rowth, sporulation and OTA production by these fungi was examined in CYA and media prepared from paprika, green coffee, anise, grapes, maize and barley. Growth was  positively affected by the highest temperature and aw values indicating that both species might be expected in warm climates or storage conditions. However, optimalgrowth conditions showed differences depending on the medium. OTA production was markedly affected by substrate and showed qualitative and quantitative differences. Both species, especially A. steynii, represent a great potential risk of OTA contamination due to their high production in a variety of conditions and substrates, in particular in barley and paprika-based media. Additionally, neither growth nor sporulation did result good indicators of OTA production by A. steynii or A. westerdijkiae;therefore, specific and highly-sensitive detection methods become essential tools for control strategies to reduce OTA risk by these species.
PB Elsevier
SN 0740-0020
YR 2014
FD 2014-07-27
LK https://hdl.handle.net/20.500.14352/34884
UL https://hdl.handle.net/20.500.14352/34884
LA eng
NO Ministerio de Ciencia e Innovación (España)
NO Universidad Complutense de Madrid y Banco de Santander
DS Docta Complutense
RD 17 abr 2025