α-Dicarbonyl compounds (α-DCs), such as glyoxal, methylglyoxal and 2,3-butanedione, are highly reactive substances occurring in thermally treated and fermented foods, that may react with amino and sulphydryl groups of side chains of proteins to form Maillard reaction end products, inducing a negative impact on the digestibility and on nutritional value of protein. In recent years the role of food derived α-DCs in gastroduodenal tract is under investigation to understand whether excess consumption of such dietary compounds might be a risk for human health. In this study the interactions between a mixture of glyoxal, methylglyoxal and 2,3-butanedione and the digestive enzymes (pepsin and pancreatin) were studied. The results showed that during gastroduodenal digestion α-DCs react with digestive enzymes to produce carbonylated proteins. Moreover, undigested and digested α-DC cytotoxicity against human cells, as well as their ability to inhibit the function of human enzymes responsible for DNA repair were shown.

Cytotoxicity of α-dicarbonyl compounds submitted to in vitro simulated digestion process

MAGA, GIOVANNI;DAGLIA, MARIA
2013-01-01

Abstract

α-Dicarbonyl compounds (α-DCs), such as glyoxal, methylglyoxal and 2,3-butanedione, are highly reactive substances occurring in thermally treated and fermented foods, that may react with amino and sulphydryl groups of side chains of proteins to form Maillard reaction end products, inducing a negative impact on the digestibility and on nutritional value of protein. In recent years the role of food derived α-DCs in gastroduodenal tract is under investigation to understand whether excess consumption of such dietary compounds might be a risk for human health. In this study the interactions between a mixture of glyoxal, methylglyoxal and 2,3-butanedione and the digestive enzymes (pepsin and pancreatin) were studied. The results showed that during gastroduodenal digestion α-DCs react with digestive enzymes to produce carbonylated proteins. Moreover, undigested and digested α-DC cytotoxicity against human cells, as well as their ability to inhibit the function of human enzymes responsible for DNA repair were shown.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/580966
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 38
  • ???jsp.display-item.citation.isi??? 37
social impact