Fig. (4) Close-ups of the Cymodocea HPLC traces (280 nm, min, mAU) showing the flavonal compounds and their respective on-line UV spectum. (a) C. rotundata; (b) C. serrulata. Retention times (min), assignment: (1) 39.3, rutin derivative; (2) 39,7, rutin (8) 42.2 and (10) 43.1, kaempferol glucoside isomers; (11) 44.7, kaempferol pentoside.