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. 2021 Jan 18;10(1):190. doi: 10.3390/foods10010190

Figure 1.

Figure 1

HPLC UV-VIS/PDA detection of pigments in wild nettle leaves (Urtica dioica L.) collected from Poreč before flowering: (a) at 450 nm (1 = violaxanthin derivative 1, 2 = neoxanthin derivative 1, 3 = neoxanthin, 4 = violaxanthin, 5 = violaxanthin derivative 2, 6 = 13′-cis-lutein, 7 = neoxanthin derivative 2, 8 = lutein 5,6-epoxide, 9 = lutein, 10 = zeaxanthin, 11 = 9′-cis-lutein, 12 = α-carotene, 13 = β-carotene); (b) at 660 nm (1 = chlorophyll a derivative 1, 2 = chlorophyll a derivative 2, 3 = chlorophyll b, 4 = chlorophyll b derivative 1, 5 = chlorophyll a derivative 3, 6 = chlorophyll a derivative 4, 7 = chlorophyll a, 8 = chlorophyll a derivative 5, 9 = chlorophyll a derivative 6).