Removal of ochratoxin A from contaminated red wines by repassage over grape pomaces

Journal of Agricultural and Food Chemistry
Michele SolfrizzoAngelo Visconti

Abstract

Ochratoxin A contamination of red wines might be quite severe in certain high-risk regions and vintages, thus requiring corrective measures to fulfill acceptable standards for human consumption. This work proposes an innovative and environmentally friendly corrective measure to reduce ochratoxin A levels by repassage of contaminated musts or wines over grape pomaces having no or little ochratoxin A contamination. Grape pomaces have a high affinity for ochratoxin A and have been shown to remove ochratoxin A from must and wine during vinification. Time course experiments showed that ochratoxin A adsorption by pomaces is a rapid process, reaching equilibrium in less than 10 h, and is not affected by the tested toxin concentrations. Repassage of wine from Primitivo grapes spiked with 2-10 microg/kg ochratoxin A over pomaces obtained from the same grapes removed up to 65% ochratoxin A within 24 h. Similar results (50-65% ochratoxin A reduction) were obtained with Primitivo or Negroamaro wines repassed over pomaces from different grape varieties including white grapes (Malvasia, Greco di Tufo) and red grapes (Sangiovese, Aglianico). Grape pomaces maintained a good efficacy in removing ochratoxin A after being reused four times. Unlik...Continue Reading

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Citations

May 17, 2013·Journal of Agricultural and Food Chemistry·Christopher C SteelLeigh M Schmidtke
Dec 25, 2013·Journal of Agricultural and Food Chemistry·Giuseppina AvantaggiatoAngelo Visconti
May 21, 2014·Applied Microbiology and Biotechnology·Leonardo PetruzziAntonio Bevilacqua
Jul 28, 2012·Journal of the Science of Food and Agriculture·Michelle F TerraLuís R Batista
Apr 20, 2016·Frontiers in Microbiology·Pasquale RussoAntonio Bevilacqua
Jan 10, 2017·Annual Review of Food Science and Technology·Andreas Schieber
Mar 31, 2018·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·María Dolores Jiménez-MartínezAna Belén Bautista-Ortín

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