Determination of anthocyanin content in 8 kinds of colored Solanum tuberosum L.varieties and its changes during storage
Objective To determin the content of anthocyanins and their changes during storage in the tuber of 8 kinds of colored Solanum tuberosum L.varieties.Methods The content of 6 kinds of major anthocyanins in the skin and flesh of 8 kinds of colored Solanum tuberosum L.from different storage periods were determined by high performance liquid chromatography.Results There were significant differences in the composition and content of anthocyanins in the tuber of 8 kinds of colored Solanum tuberosum L.,and more than 4 kinds of anthocyanins could be detected in each sample.Delphinidin,petunidin and peonidin were widely found in the tuber of coloured Solanum tuberosum L.,no cyanidin was found in flesh.Petunidin was the dominant anthocyanidin in purple-coloured Solanum tuberosum L.,while pelargonidin was the main anthocyanidin in red-coloured Solanum tuberosum L..The 6 kinds of anthocyanidins in the skin of coloured Solanum tuberosum L.account for over 82.5％of total anthocyanins in whole tuber.During the storage,the content of pelargonidin in the skin and tuber of CS3 reached the highest at 15 d,the content of petunidin in the skin and tuber of CS4 reached the highest at 29 d,the content of delphinidin in the skin and tuber of CS4 and CS7,the flesh and tuber of CS6 and the skin and flesh of CS8 reached the highest at 29 d,the content of peonidin in the skin and tuber of CS5 reached the highest at 29 d.The anthocyanidins of the skin and flesh in the rest of coloured Solanum tuberosum L.reached the highest at 22 d.Conclusion All 8 kinds of colored Solanum tuberosum L.(especially in skins)contain abundant anthocyanins.There is no significant change in anthocyanin composition but obvious variation in its content in skin and tuber,whereas there is little difference in anthocyanin content in flesh.This study provides ideas and basic data to enhance added value of colored potatoes as well as develop resources of anthocyanins.
万方数据
维普
