Suppression of mycotoxins production and efficient chelation of heavy metals using natural melanin originated from Aspergillus flavus and Aspergillus carbonarius

Table 2 Antioxidant DPPH activity of melanin produced by A. flavus and A. carbonarius

Melanin Conc. (µg/mL)	DPPH radical scavenging %				P1 *Ascorbic acid*	P2 *L-DOPA*	*P3 A. flavus melanin*	P4 *A. carbonarius melanin*
Melanin Conc. (µg/mL)	Ascorbic acid (Positive control)	L-DOPA (standard)	A. flavus melanin	A. carbonarius melanin	P1 *Ascorbic acid*	P2 *L-DOPA*	*P3 A. flavus melanin*	P4 *A. carbonarius melanin*
0	0.0000 ± 0.0000^a	0.0000 ± 0.0000^a	0.0000 ± 0.0000^a	0.0000 ± 0.0000^a	-	-	-	-
20	17.3433 ± 0.05774^b	41.07 ± 0.00577^bi	16.57 ± 0.05774^bi	31.12 ± 0.00577^bi	<0.001*	<0.001*	<0.001*	<0.001*
40	24.5000 ± 0.05774^c	46.44 ± 0.0577^ci	31.87 ± 0.05774^ci	34.46 ± 0.02887^ci	<0.001*	<0.001*	<0.001*	<0.001*
60	29.1667 ± 0.05774^d	53.63 ± 0.0577^di	33.07 ± 0.05774^di	41.89 ± 0.00577^di	<0.001*	<0.001*	<0.001*	<0.001*
80	36.9167 ± 0.0577^e	55.87 ± 0.0577^e	48.76 ± 0.00577^ei	47.87 ± 0.00577^ei	<0.001*	<0.001*	<0.001*	<0.001*
100	40.6133 ± 0.0577^h	59.59 ± 0.04041^hi	55.51 ± 0.00577^hi	50.78 ± 0.00577^hi	<0.001*	<0.001*	<0.001*	<0.001*
120	40.3667 ± 0.05774^g	58.30 ± 0.05771^gi	54.73 ± 0.05774^gi	50.73 ± 0.00577^gi	<0.001*	<0.001*	<0.001*	<0.001*
140	40.7200 ± 0.0577^f	57.800 ± 0.05771^fi	54.71 ± 0.00577 ^gi	50.71 ± 0.0577^fi	<0.001*	<0.001*	<0.001*	<0.001*
160	40.7100 ± 0. 0577^f	57.91 ± 0.00577^fi	54.13 ± 0.05774^fi	50.71 ± 0.05774^fi	<0.001*	<0.001*	<0.001*	<0.001*

*Mean in the same row having different letters are significantly different (P ≤ 0.05)

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