Altogether Spirulina products
tested, only one sample S1 was found to have minimum
Zn content of 0.533 mg/kg d.w. Nevertheless, the remaining
24 samples had the Zn content of >1.200 mg/kg d.w. On the
other hand, the samples S6, S2, S22 and S23 had the highest
content of Zn such as 6.225, 5.627, 4.626 and 4.428 respectively
(Table 2 and Fig. 1b).