Geothermal water as a nutrient medium source on the biomass productivity and biochemical composition of Spirulina (Arthrospira platensis) under the greenhouse conditions

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Table 9

Mineral profile of Spirulina cultured in the Schlösser's medium and in the different ratios of geothermal water.

	SM	GW25	GW50	GW75	GW100
Na (Sodium)	1.62^b	1.05^a	1.00^a	0.78^a	1.44^b
K (Potassium)	1.50^b	1.39^a	0.92^a	0.98^a	1.54^b
Mg (Magnesium)	0.23^a	0.21^a	0.14^a	0.20^a	0.38^b
Ca (Calsium)	0.13^a	0.11^a	0.13^a	0.10^a	2.61^b
P (Phosphorus)	0.69^ab	0.60^ab	0.38^a	0.55^ab	0.91^b
Fe (Iron)	668.02^b	615.06^b	466.55^a	405.42^a	565.37^b
Zn (Zinc)	28.29^a	44.61^ab	34.80^ab	42.18^ab	86.40^b
Cu (Copper)	6.17^a	14.67^b	3.83^a	4.15^a	6.39^a
Se (Selenium)	27.92	27.24	27.52	27.69	28.13
Mn (Manganese)	31.00^a	34.21^a	24.70^a	27.64^a	63.22^b

The data was analyzed using one-way ANOVA. Different letters in the same line indicate statistically significant differences (P < 0.05) among the experimental groups.

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