Kinetic parameters investigation at reaction of pigment:copigment complex between quercetin and strawberry anthocyanins

The stability between anthocyanin extract of strawberry and quercetin as pigment:copigment couple of temperature evaluation was investigated. A couple temperatures and concentrations of copigment were used for the investigation there interactions. Rate constant of copigmentation reaction was found. Some kinetic parameters degradation rates, z factor and activation energy Ea were calculated. At high temperatures, to 50 °C obtained complex destroyed and at 20 °C after cooling the complex was not restored again according the calculations. In this system do not observed reversibil of the copigmentation process.