The methanol used (Panreac, Barcelona, Spain) was HPLC grade. The water was supplied by a Milli-Q system, Millipore (Bedford, MA, USA). The malvidin-3-glucoside was obtained from Polyphenols A.S. (Sandnes, Norway).
The methanol used (Panreac, Barcelona, Spain) was HPLC grade. The water was supplied by a Milli-Q system, Millipore (Bedford, MA, USA). The malvidin-3-glucoside was obtained from Polyphenols A.S. (Sandnes, Norway).