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Article Publish Status: FREE
Abstract Title:

Fumigation of Brazil nuts with allyl isothiocyanate to inhibit the growth of Aspergillus parasiticus and aflatoxin production.

Abstract Source:

J Sci Food Agric. 2018 Jan ;98(2):792-798. Epub 2017 Aug 12. PMID: 28675475

Abstract Author(s):

Lucas F Lopes, Keliani Bordin, Gabriel Hc de Lara, Federica Saladino, Juan M Quiles, Giuseppe Meca, Fernando B Luciano

Article Affiliation:

Lucas F Lopes

Abstract:

BACKGROUND: Brazil produces approximately 40 000 tons of Brazil nuts annually, which is commonly contaminated with fungi and mycotoxins. Gaseous allyl isothiocyanate (AITC) was used to inhibit the growth of Aspergillus parasiticus and its production of aflatoxins (AFs) in Brazil nuts.

RESULTS: Nuts were inoculated with 10spores gof A. parasiticus and placed in airtight glass jars with controlled relative humidity (RH = 95 or 85%). Samples were treated with 0, 0.5, 1.0 or 2.5µL Lof gaseous AITC and analyzed after 30 days to determine the fungal population and AFs content. Samples were also submitted to sensory evaluation. AITC at 2.5µL Lcould completely inhibit the fungal growth and AFs production in both the RH tested. AITC at 0.5 and 1µL Ldid not affect the microbial growth at RH = 95%, but 1µL Lreduced the production of AFs by∼50%. All AITC treatments reduced the fungal population and AFs to undetectable levels at RH = 85%. None of the concentrations altered sensory characteristics of Brazil nuts.

CONCLUSION: Gaseous AITC could be used as an alternative to inhibit the growth of A. parasiticus during storage and transport of Brazil nuts.© 2017 Society of Chemical Industry.

Study Type : In Vitro Study

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