"Effect of transglutaminase on the properties of glutenin macro polymer and dough rheology"

STEFFOLANI, M. E.; PÉREZ, G. T.; RIBOTTA, P. D.; PUPPO, M. C.; LEÓN, A. E.

CEREAL CHEMISTRY

AACC International

Lugar: USA; Año: 2008 vol. 85 p. 39 - 43

0009-0352

The effect of transglutaminase (TG) on glutenin macropolymer (GMP) properties could help to understand changes in bread quality. The aim of the present study was to analyze modifications in GMP and dough properties caused by TG addition. Transglutaminase introduced cross-links to gluten proteins, mainly high molecular weight glutenins. This effect modified the protein structure and markedly increased dough strength. These changes in the structure of glutenins increased SDS solubility and decreased GMP content and GMP storage modulus. However, TG increased GMP particle size, notably at higher doses. TG affected rheological characteristics of dough in that increasing TG doses decreased tan ä, and increased G’. In all the studies conducted, the TG increased GMP polymer size, but contrary to what was expected, this increase did not involve an increase in GMP content. These results confirmed the effect of TG on dough quality and the great differences found with different TG doses.