Table 1.

p value (Student’s t-test) showing the statistic significance of observed results.

p value	AICB 318	AICB 702	AICB 822	AICB 823	AICB 832	AICB 833	AICB 898	AICB 899
Mg/control	<0.05	0,2560	0,2971	<0.001	0,0845	0,0629	0,5	<0.001
Ca/control	<0.001	0,1732	<0.05	<0.001	0,0630	0,5	0,5	<0.001
Mg/Ca	<0.05	0,5	<0.05	0,5	0,0831	<0.05	0,5	0,5
(Mg + EDTA)/(Mg − EDTA)	<0,05	0,0845	<0.05	<0.001	<0.05	<0.05	<0.05	0,1733
(Ca + EDTA)/(Ca − EDTA)	0,1497	0,0845	<0.001	<0.001	0,0630	0,5	0,5	0,1733
(Mg + EDTA)/(Ca + EDTA)	<0.05	0,5	<0.05	<0.001	<0.05	<0.05	<0.05	0,2234

Mg/control = strains treated with MgSO₄ as compared to control cultures; Ca/control = strains treated with CaCl₂ as compared to control cultures; Mg/Ca = strains treated with MgSO₄ as compared to those treated with CaCl₂; (Mg + EDTA)/(Mg − EDTA) = strains treated with MgSO₄ and EDTA as compared to those treated with MgSO₄ but without EDTA; (Ca + EDTA)/(Ca − EDTA) = strains treated with CaCl₂ and EDTA as compared to those treated with CaCl₂ but without EDTA; (Mg + EDTA)/(Ca + EDTA) = strains treated with MgSO₄ and EDTA as compared to those treated with CaCl₂ and EDTA.