Anthocyanins were extracted and purified from tubers of a
Finnish cultivar of purple-fleshed potato, Synkeä Sakari. The
potatoes were cultivated in Kokemäki, Finland; from May 2014
to September 2014 (duration: 132 days). The harvested potatoes
were stored at a temperature of 4 ◦C. Two batches of
potatoes were used: first batch of completely purple-fleshed
potatoes, and second batch of partially pigmented potatoes.