2013 Volume 12 Issue 3 Pages 229-234
The relationship between root color and anthocyanin composition was investigated in 43 radishes: 14 Raphanus sativus L. var. longipinnatus L. H. Bailey cultivars and 29 R. sativus L. var. sativus cultivars. The colors of 53 samples which were nonwhite were investigated using the Horticultural Color Chart of The Royal Horticultural Society, London, England (RHS. CC), and classified into three groups based on the color difference meter. The color in group 1 (28 samples) was in the red region of RHS. CC and their hue values (b*/a*) were from 0.10 to 0.25; that in group 2 (2 samples) was in the red-purple region of RHS. CC and their b*/a* were from 0.04 to 0.05; and that in group 3 (22 samples) was in the red and red-purple region of RHS CC and their b*/a* were from −0.28 to −0.02. The aglycone in groups 1 and 2 was pelargonidin, whereas that in group 3 was pelargonidin or cyanidin. The 3 samples including pelargonidin in group 3 were classified as group 3a, and the 19 samples including cyanidin were classified as group 3b. Groups 1, 2, and 3a comprised known acylated pelargonidin 3-sophoroside-5-glucosides as their main anthocyanins, and group 3b comprised known acylated cyanidin 3-sophoroside-5-glucosides as the main anthocyanins.
