After production of anthocyanin extracts, all samples were stored at 80 C to prevent the deterioration and interaction between the compounds of extracts until analyses. All samples were held at þ4 C to thaw for a night before analyzing. The soluble solid
content of the extracts was adjusted based on the natural soluble solid content values of the materials before the analyses (6 Bx for RC and 12 Bx for SCP).