Carbon dioxide production as an indicator of Aspergillus flavus colonisation and aflatoxins/cyclopiazonic acid contamination in shelled peanuts stored under different interacting abiotic factors

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dc.contributor.authorGarcia-Cela, Esther
dc.contributor.authorGari Sanchez, F. J.
dc.contributor.authorSulyok, Michael
dc.contributor.authorVerheecke-Vaessen, Carol
dc.contributor.authorMedina, Angel
dc.contributor.authorKruska, Rudolf
dc.contributor.authorMagan, Naresh
dc.date.accessioned2019-12-05T19:46:21Z
dc.date.available2019-12-05T19:46:21Z
dc.date.issued2019-10-24
dc.description.abstractAspergillus flavus is the main xerophylic species colonising stored peanuts resulting in contamination with aflatoxins (AFs) and cyclopiazonic acid (CPA). This study evaluated the relationship between storage of shelled peanuts under interacting abiotic conditions on (a) temporal respiration (R) and cumulative CO2 production, (b) dry matter losses (DMLs) and (c) aflatoxin B1 (AFB1) and CPA accumulation. Both naturally contaminated peanuts and those inoculated with A. flavus were stored for 7-days under different water activities (aw; 0.77–0.95) and temperatures (20–35°C). There was an increase in the temporal CO2 production rates in wetter and warmer conditions, with the highest respiration at 0.95 aw + A. flavus inoculum at 30°C (2474 mg CO2kg−1h−1). The DMLs were modelled to produce contour maps of the environmental conditions resulting in maximum/minimum losses. Maximum mycotoxin contamination was always at 0.95 aw although optimal temperatures were 25-30°C for AFs and 30-35°C for CPA. These results showed a correlation between CO2 production and mycotoxin accumulation. They also provide valuable information for the creation of a database focused on the development of a post-harvest decision support system to determine the relative risks of contamination with these mycotoxins in stored shelled peanuts.en_UK
dc.identifier.citationGarcia-Cela E, Sanchez FG, Sulyok M, et al., (2020) Carbon dioxide production as an indicator of Aspergillus flavus colonisation and aflatoxins/cyclopiazonic acid contamination in shelled peanuts stored under different interacting abiotic factors. Fungal Biology, Volume 124, January 2020, pp.1-7en_UK
dc.identifier.issn1878-6146
dc.identifier.urihttps://doi.org/10.1016/j.funbio.2019.10.003
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/14803
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectDry matter lossesen_UK
dc.subjectFood safetyen_UK
dc.subjectGroundnutsen_UK
dc.subjectMycotoxinsen_UK
dc.subjectTemperatureen_UK
dc.subjectWater activityen_UK
dc.titleCarbon dioxide production as an indicator of Aspergillus flavus colonisation and aflatoxins/cyclopiazonic acid contamination in shelled peanuts stored under different interacting abiotic factorsen_UK
dc.typeArticleen_UK

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