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. 2019 Nov 28;8(12):596. doi: 10.3390/antiox8120596

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© 2019 by the author.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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2,2′-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity (a) and ferric reducing antioxidant power (b) of the Irish brown seaweeds extracts obtained from semi/non-polar organic solvents and thereof mixtures (1:1 or 1:1:1, v/v/v). [Mix 1: n-hexane and diethyl ether; Mix 2: n-hexane and chloroform; Mix 3: diethyl ether and chloroform; Mix 4: n-hexane, diethyl ether and chloroform]. [: H. elongata; : L. saccharina; : L. digitata]. Data are expressed as mean ± SD (n = 6). Ferric Reducing Antioxidant Power (FRAP) values are expressed as mg Trolox equivalent (TE)/g extract (dry weight). Letters (a–g) on each bar are significantly different (p < 0.05) for various solvents, for each individual species. Letters (p–r) on bars at a specific solvent (Mix 4) are significantly different (p < 0.05) among the three species. Mix 1: n-hexane and diethyl ether; Mix 2: n-hexane and chloroform; Mix 3: diethyl ether and chloroform; Mix 4; n-hexane, diethyl ether and chloroform. All the solvents were mixed either 1:1 or 1:1:1 ratio (v/v).

Inline graphic — 2,2′-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity (a) and ferric reducing antioxidant power (b) of the Irish brown seaweeds extracts obtained from semi/non-polar organic solvents and thereof mixtures (1:1 or 1:1:1, v/v/v). [Mix 1: n-hexane and diethyl ether; Mix 2: n-hexane and chloroform; Mix 3: diethyl ether and chloroform; Mix 4: n-hexane, diethyl ether and chloroform]. [: H. elongata; : L. saccharina; : L. digitata]. Data are expressed as mean ± SD (n = 6). Ferric Reducing Antioxidant Power (FRAP) values are expressed as mg Trolox equivalent (TE)/g extract (dry weight). Letters (a–g) on each bar are significantly different (p < 0.05) for various solvents, for each individual species. Letters (p–r) on bars at a specific solvent (Mix 4) are significantly different (p < 0.05) among the three species. Mix 1: n-hexane and diethyl ether; Mix 2: n-hexane and chloroform; Mix 3: diethyl ether and chloroform; Mix 4; n-hexane, diethyl ether and chloroform. All the solvents were mixed either 1:1 or 1:1:1 ratio (v/v).