Brassica vegetables as sources of epithionitriles: Novel secondary products formed during cooking.
Food Chem
; 245: 564-569, 2018 Apr 15.
Article
en En
| MEDLINE
| ID: mdl-29287410
ABSTRACT
The epithionitriles, 1-cyano-2,3-epithiopropane, in particular, and 1-cyano-3,4-epithiobutane, are important, but yet underestimated glucosinolate hydrolysis products that are released instead of the cancer preventative isothiocyanates in Brassica vegetables, such as cabbage, broccoli, or pak choi. Here, we characterized the reactivity of 1-cyano-2,3-epithiopropane under aqueous heat treatment conditions and compared our findings to those of the related epithionitriles 1-cyano-3,4-epithiobutane and 1-cyano-4,5-epithiopentane. In contrast to the other epithionitriles, 1-cyano-2,3-epithiopropane is highly reactive. As a result, 2-aminothiophene and dimeric 1,4-dithiane-2,5-diacetonitrile were identified as main products and a reaction mechanism is proposed. Formation of 2-aminothiophene was also observed in cooked white cabbage samples. Moreover, three novel compounds were identified as derivatives of the related epithionitriles. The results imply that apart from isothiocyanates, process-derived compounds should be considered in regards to cancer preventative Brassica vegetable related bioactivity.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Verduras
/
Brassica
/
Extractos Vegetales
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Food Chem
Año:
2018
Tipo del documento:
Article