Heterologous production and characterization of a pyomelanin of Antarctic Pseudomonas sp. ANT_H4: a metabolite protecting against UV and free radicals, interacting with iron from minerals and exhibiting priming properties toward plant hairy roots

Table 3 The amount of iron released (µg/mL) from hematite and pyrite after treatment with pyomelanin at two concentrations and deionized water (ddH₂O; control)

Mineral	Time [h]	Control		Pyomelanin
Mineral	Time [h]	ddH₂O	±	concentration 0.1 mg/mL	±	concentration 0.01 mg/mL	±
Hematite (Fe₂O₃)	1	1.878	0.087	0.042	0.005	0.044	0.001
	24	1.458	0.036	0.028	0.003	0.030	0.002
	48	1.386	0.029	0.016	0.005	0.016	0.004
Pyrite (FeS₂)	1	1.174	0.134	0.050	0.005	0.049	0.000
	24	0.824	0.067	0.029	0.008	0.022	0.008
	48	0.571	0.038	0.009	0.004	0.016	0.003

ISSN: 1475-2859