This study demonstrated that 47 ◦C is the critical temperature
for stability of phycocyanin solutions, with a sharp drop in the
CR and half-life values being detected at temperatures above this.
However, the phycocyanin solution was stable during HTST pasteurization.
At 50 ◦C the phycocyanin solution showed maximum
stability at pH 6.0, while at 60 ◦C the maximum stability was at
pH 5.5. Glucose, sucrose and sodium chloride showed potential for
protection and delay of the degradation process.