Mycoflora and Ochratoxin A Control in Wheat Grain Using Natural Extracts Obtained from Wine Industry By-ProductsReportar como inadecuado




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1

Faculty of Food Processing Technology, Banat’s University of Agricultural Sciences and Veterinary Medicine, Calea Aradului 119, RO 300645, Timisoara, Romania

2

Faculty of Horticulture and Forestry, Banat’s University of Agricultural Sciences and Veterinary Medicine, Calea Aradului 119, RO 300645, Timisoara, Romania





*

Author to whom correspondence should be addressed.



Abstract The aim of this study was to evaluate the effect of some natural extracts obtained from grape pomace GPE and grape seeds GSE as compared to a synthetic food, antioxidant-butylated hydroxytoluene BHT, in order to control fungal population and ochratoxin A OTA production in naturally contaminated wheat. The results showed that the addition of these extracts was efficient with OTA content decreasing. On treatment with these extracts the loss of OTA content after 14 days was in the range 7.8–28.3% relative to the control sample, but increased up to 26.48–37% after 28 days. The highest loss in OTA content was recorded for treatment with GPE at the 500 ppm level. Regarding the fungal development, the obtained results show that the total fungal populations were significantly reduced by using natural extracts. The most efficient extract was GPE. Both BHT and GPE inhibit the growth of Penicillium verrrucosum, for all doses, but less with Aspergillus genera. GPE affects the growth of other types of moulds such as Rhizopus microsporus, Fusarium graminearum, Alternaria infectoria and Cladosporium herbarum. Our data suggested that GPE and GSE are able to provide fungicidal and fungistatic protection and to control the OTA accumulation in wheat, at least in a similar manner to BHT. View Full-Text

Keywords: ochratoxin A; butylated hydroxytoluene BHT; grape seed extract; grape pomace extract; fungus genera ochratoxin A; butylated hydroxytoluene BHT; grape seed extract; grape pomace extract; fungus genera





Autor: Ersilia Alexa 1, Mariana-Atena Poiana 1,* and Renata-Maria Sumalan 2

Fuente: http://mdpi.com/



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