Characterization and Quantification of Luteolin-Metal Complexes in Aqueous Extract of Lonicerae Japonicae Flos and Huangshan Wild Chrysanthemum

<div>(a) Effect of the molar ratio of luteolin to metal ions on the formation of luteolin-metal complex (<i>n</i> = 3). (b) Effect of different types of metal ions on luteolin-metal complex formation (<i>n</i> = 3).</div>

International Journal of Analytical Chemistry

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Figure 4

Figure 4: Characterization and Quantification of Luteolin-Metal Complexes in Aqueous Extract of Lonicerae Japonicae Flos and Huangshan Wild Chrysanthemum 

Figure 4 | Characterization and Quantification of Luteolin-Metal Complexes in Aqueous Extract of Lonicerae Japonicae Flos and Huangshan Wild Chrysanthemum 