Phenolic compounds in F-I Figure 3 shows HPLC profiles of phenolic compounds in F-I prepared from “Miyanou-36” and “Bise.” Two major peaks were observed in the retention time of 12.6 and 29.3 min. Two peaks were also observed in the other cultivars. However, the ratio of the peak area of peak 2 to that of Peak 1 varied according to the cultivars (Ayamurasaki: 1.20, Kyushu-132: 1.56, Miyanou-36: 0.69, Bise: 1.10, Tanegashimamurasaki: 1.34). When the monitor- ing absorbance was set at 280 nm, no other peaks than those monitored at 328 nm were observed (data not shown). Peak 1 (re- tention time = 12.6 min) was identified as ChA by comparison with the retention time and the photodiode array spectra of au- thentic ChA. In addition, the UV/VIS spectrum of the peak 2 was similar to that of the ChA and peak 1 (Figure 3).