Comparative study of anthocyanin extraction methods in Dahlia pinnata petals

Abstract

Anthocyanins are phenolic compounds responsible for the color of numerous plant sources. In literature, there is little information about the dahlia flower as a potential source of anthocyanins. This study aimed to develop a procedure for anthocyanins extraction from black dahlia petals using fresh and dehydrated material. A three-stages nested design was used to develop the methodology, 3 solid-liquid-ratios and 6 dissolvents nested in 3 methods. The highest yields were obtained with the homogenization assisted maceration technique, citric acid solvent (2, 4, 6%), and a ratio of 1:30 with dry petals. The results of this study show the opportunity to obtain a high anthocyanin content from black dahlia and open the possibility to use it as another important source of this pigment.