From:  Phytochemical screening of Psidium guajava and Carica papaya leaves aqueous extracts cultivated in Greece and their potential as health boosters

Elemental content in the leave infusion

ElementPsidium guajava infusionCarica papaya infusion
K1.45 (% w/w) on dry weight or 72.5 mg/L in the infusion1.5 (% w/w) on dry weight or 75.4 mg/L in the infusion
Fe70.0 mg/kg on dry weight or 0.35 mg/L in the infusion84.0 mg/kg on dry weight or 0.42 mg/L in the infusion
Zn30.0 mg/kg on dry weight or 0.15 mg/L in the infusion50.0 mg/kg on dry weight or 0.25 mg/L in the infusion
Ca0.91 (% w/w) on dry weight or 45.3 mg/L in the infusion0.65 (% w/w) on dry weight or 32.4 mg/L in the infusion
Mg0.065 (% w/w) on dry weight or 3.25 mg/L in the infusion0.043 (% w/w) on dry weight or 2.12 mg/L in the infusion
CdNDND
PbNDND
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w/w: weight/weight; ND: not detected