While the 3rd peak was un-identified, peaks 2 and 3 were
simple cyanidin and peonidin, respectively, because they presented
the m/z ratio as identified by MS at 287 and 301 m/z,respectively (data not shown). Both peak areas of cyanidin and
peonidin in the hydrolysate of raw P40 contributed to 90% of total
peak area, but near 80% of total anthocyanidins measured by acid
hydrolysis were cyanidin derivatives.