Data/hora: 12/06/2024 19:15:11

Biblioteca(s): 	Embrapa Semiárido; Embrapa Uva e Vinho.	
Data corrente: 	20/11/2020	
Data da última atualização: 	26/11/2020	
Autoria: 	FREIRE, L.; BRAGA, P. A. C.; FURTADO, M. M.; DELAFIORI, J.; DIAS-AUDIBERT, F. L.; PEREIRA, G. E.; REYES, F. D.; CATHARINO, R. R.; SANT'ANA, A. S.	
Afiliação: 	LUÍSA FREIRE, Department of Food Science, Faculty of Food Engineering, University of Campinas, CEP 13083-862, Campinas, SP, Brazil; PATRÍCIA A. C. BRAGA, Department of Food Science, Faculty of Food Engineering, University of Campinas, CEP 13083-862, Campinas, SP, Brazil; MARIANNA M. FURTADO, Department of Food Science, Faculty of Food Engineering, University of Campinas, CEP 13083-862, Campinas, SP, Brazil; JEANY DELAFIORI, Innovare Biomarkers Laboratory, Faculty of Pharmaceutical Sciences, University of Campinas, CEP 13083-887, Campinas, SP, Brazil; FLÁVIA L. DIAS-AUDIBERT, Innovare Biomarkers Laboratory, Faculty of Pharmaceutical Sciences, University of Campinas, CEP 13083-887, Campinas, SP, Brazil; GIULIANO ELIAS PEREIRA, CNPUV; FELIX G. REYES, Department of Food Science, Faculty of Food Engineering, University of Campinas, CEP 13083-862, Campinas, SP, Brazil; RODRIGO R. CATHARINO, Innovare Biomarkers Laboratory, Faculty of Pharmaceutical Sciences, University of Campinas, CEP 13083-887, Campinas, SP, Brazil; ANDERSON S. SANT'ANA, Department of Food Science, Faculty of Food Engineering, University of Campinas, CEP 13083-862, Campinas, SP, Brazil.	
Título: 	From grape to wine: Fate of ochratoxin A during red, rose, and white winemaking process and the presence of ochratoxin derivatives in the final products.	
Ano de publicação: 	2020	
Fonte/Imprenta: 	Food Control, v. 113, p. 107167, 2020.	
DOI: 	https://doi.org/10.1016/j.foodcont.2020.107167	
Idioma: 	Inglês	
Conteúdo: 	The presence of ochratoxin A (OTA) in wine is mainly due to the contamination of grapes by Aspergillus carbonarius and A. niger, still in the vineyard or at stages prior to winemaking. Throughout winemaking process, although there is a reduction in OTA levels, modified mycotoxins may also be formed. In fact, modified mycotoxins are compounds that normally remain undetectable during the conventional analysis used for the parent toxin. In this context, the current study aimed to evaluate the effect of grape variety and winemaking steps on OTA fate as well as the formation of modified ochratoxins. White, rose and red wines were prepared from Muscat Italia, Syrah and Touriga Nacional varieties, respectively. OTA was determined during different steps of winemaking by UHPLC-ESI-MS/MS. Identification of ochratoxin derivatives was performed using tandem MS experiments. A reduction of 90.72, 92.44 and 88.15% in OTA levels was observed for white, rose and red wines, respectively. Among the sought targets, the following ochratoxin-derived candidates were identified: ochratoxin &#946;, ochratoxin &#945; methyl ester, ochratoxin B methyl ester, ochratoxin A methyl ester, ethylamide ochratoxin A, ochratoxin C and ochratoxin A glucose ester. These results indicate that the formation of ochratoxin derivatives leads to an underestimation of total mycotoxin levels in wine and, therefore, the inclusion of techniques for multi-mycotoxins detection should be considered.	
Palavras-Chave: 	A carbonarius; A niger; Masked mycotoxin; Modified ochratoxin; UHPLC-MS.	
Thesaurus Nal: 	Grapes; Mass spectrometry.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal
X Pesquisa, Tecnologia e Engenharia	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/218047/1/1-s2.0-S0956713520300839-main.pdf	
Registro original: 	Embrapa Uva e Vinho (CNPUV)	
Exemplares: 	CNPUV - (18520-1) - UPC - AP - DD -  -  -  - DIS
CPATSA - (60005-1) - UPC - AP - DD -  -  -  - DIS