Valorization of Seaweed Wracks: Inclusion as Additive in Diets for Grass Carp (Ctenopharyngodon idella)

Table 5

DPPH and ABTS activity and IC₅₀ of multispecific (MU) and monospecific (MO) macroalgal wracks used in the experiment.

		DPPH		ABTS
		Activity (%)	IC50 (μg mL^-1)	Activity (%)	IC50 (μg mL^-1)
MU wrack	n-Hexane	^a,	>250	^b,
	Ethyl acetate	^b,	>250	^c
	Ethanol	^a,	>250	^a,	>250
MO wrack	n-Hexane	^A	>250	^A	^C
	Ethyl acetate	^C	^A	^B	^A
	Ethanol	^B	^B	^B	^B
Trolox

Results are presented as . All determinations were carried out by quadruplicate. DPPH: 1,1-diphenyl-2-picryl-hydrazyl; ABTS: 2,20-Azinobis-(3-ethylbenzothiazoline-6-sulfonic acid); IC₅₀: concentration yielding 50% scavenging of each radical.^a,b,c, and ^A,B,C represent significant differences between solvents within the same wrack (). Represents significant differences between wracks for the same solvent (). Activity (%) was measured at 250 μg mL^-1 for MU and MO extracts and at 100 μg mL^-1 for Trolox standard.