In vivo antidiabetic efficacy, mineral element composition, and qualitative phytochemistry of the aqueous leaf extracts of Pentas zanzibarica (Klotzsch.) Vatke and Olea europaea subspecies africana (Mill.)

Table 4. Elemental composition of the aqueous leaf extract of P. zanzibarica and O. europaea subspecies Africana.

Element	Concentrations in ppm (µg/g)
Element	*P. zanzibarica*	*O. europaea* subspecies africana
^*Cr	114.15±0.28^a	90.30±0.72^b
Cu	30.70±0.59^a	8.10±0.06^b
Fe	674.33±7.62^a	131.00±1.15^b
Ni	<5	<5
^*Mg	3570.20±1.30^b	3692.30±7.88^a
Mn	18.0±0.58^b	148.33±1.67^a
Mo	<1	3.4±0.1
Sr	<1	<1
^*V	<1	<1
Zn	91.13±2.08^b	102.67±1.45^a

Elements with an asterisk (*) were analyzed using AAS; <5: below the limit of detection (LOD) for EDXRF; <1: below the limit of detection for AAS; Values are presented as x±SEM; means with different superscript alphabets across the rows are significantly different (Un-Paired student t-test; p<0.05).