. 2020 Mar 2;10(3):384. doi: 10.3390/biom10030384

Table 3.

Total antioxidant capacity with regards to the key reactions for their determination.

Oxidative Potential Found in Literature	Key Reaction	References
TAC (total antioxidant capacity)	$A N = N A \to [A \cdot N_{2} \cdot A] \overset{- N_{2}}{\to} 2 A \cdot$ $A \cdot + O_{2} \to A O_{2} \cdot \overset{R - P E}{\to} s t a b l e p r o d u c t$ $A O_{2} \cdot + A O_{2} \cdot \to s t a b l e p r o d u c t$ R-PE: R-phycoerythrin	[233,237,238,239]
TAP/TAOP (total antioxidant power/potential)	Assessed via FRAP method: Fe^IIITPTZ + antioxidant → Fe^II-TPTZ	[230,240,241]
TRAP (total radical-trapping antioxidant parameter)	$R N = N R \overset{37 ° C}{\to} [R \cdot N_{2} \cdot R] \overset{- N_{2}}{\to} 2 R \cdot \overset{2 O_{2}}{\to} 2 R O O \cdot$ $R N = N R$ (ABAP)	[232,236,242]
TRAP (total reactive antioxidant potential)	Assessed via the method proposed by Lissi et al. $L H_{2} \overset{- H}{\to} L H \cdot \overset{O_{2}}{\to} L O_{2} H \cdot ⇋ L H O O H$ $↘ ↙$ $h ν$ $R O O \cdot + L H_{2} \to R O O H + L H \cdot$	[232,243]
TAR (total antioxidant reactivity)	Assessed using the abovementioned method	[228]
TAR (total antioxidant response)	Based on the method proposed by Miller et al. ABTS - 2,2′-azinobis-(3-ethylbenzothiazoline)-6-sulphonic acid $A B T S \overset{p e r o x i d a s e (e . g . m e t m y o g l o b i n), H_{2} O_{2}}{\to} A B T S^{\cdot +}$	[228,240]
TAA (total antioxidant activity)	$Fe - EDTA + H_{2} O_{2} \to O H \cdot \overset{b s o d i u m b e n z o a t e}{\to} T B A R S \overset{a n t i o x i d a n t s}{\to} T B A R S s u p p r e s s i o n$	[240,244]
TAS (total antioxidant status)	ABTS - 2,2′-azinobis-(3-ethylbenzothiazoline)-6-sulphonic acid $A B T S \overset{p e r o x i d a s e (e . g . m e t m y o g l o b i n), H_{2} O_{2}}{\to} A B T S^{\cdot +}$	[228,245,246]
TPAC (total plasma antioxidant capacity/capability)	$A N = N A \to [A \cdot N_{2} \cdot A] \overset{- N_{2}}{\to} 2 A \cdot$ $A \cdot + O_{2} \to A O_{2} \cdot \overset{R - P E}{\to} s t a b l e p r o d u c t$ $A O_{2} \cdot + A O_{2} \cdot \to s t a b l e p r o d u c t$ R-PE: R-phycoerythrin	[237,238,247]
NEAC (nonenzymatic antioxidant capacity)	$A N = N A \to [A \cdot N_{2} \cdot A] \overset{- N_{2}}{\to} 2 A \cdot$ $A \cdot + O_{2} \to A O_{2} \cdot \overset{R - P E}{\to} s t a b l e p r o d u c t$ $A O_{2} \cdot + A O_{2} \cdot \to s t a b l e p r o d u c t$ R-PE: R-phycoerythrin	[134,238]
Ir-reducing capacity (iridium-reducing capacity)	$I r (I V) + e^{-} \to I r (I I I)$ $I r^{O X} + e^{-} \to I r^{R E D}$ $K_{2} I r C l_{6} (I V) + e^{-} \to I r (I I I)$	[128,248]