In Vitro Antioxidant Status of Plants Studied Near Omalur Bus Stand

Botanical aspects, phytochemicals, and toxicity of Tamarindus indica leaf and a systematic review of antioxidant capacities of T. indica leaf extracts

“…The other studies focused on the capacity on the ascorbic acid equivalent. Eight studies conducted by Krishnaveni et al resulted in 2.3–8.3 mg AAE/g extract ( 30 , 31 , 35 – 37 , 39 – 41 ). Ouédraogo et al ( 47 ) reported a value of 667.26 μmol AAE/g extract, which was ~10% of standard quercetin (6034.6 μmol AAE/g).…”

“…They were 3.6- and 4.4-fold that of the standard ascorbic acid, respectively (279.9 and 339.3 μg/ml vs. 77.3 μg/ml) ( 32 ). The scavenging capacities in the remaining 8 studies were determined by Krishnaveni et al The values were in the range of 1.1–7.0 mg quercetin equivalent (QE)/g extract ( 30 , 31 , 35 – 37 , 39 – 41 ).…”

“…The assays were performed in 8 studies by Krishnaveni et al and one study by Raghavendra et al Methanolic extract of T. indica leaf showed a total antioxidant capacity of 72.0 μg/ml calculated as ascorbic acid equivalent ( 33 ), while aqueous extracts showed capacities of 0.98–29.4 mg AAE/g extract ( 30 , 31 , 35 – 37 , 39 – 41 ).…”

“…The H 2 O 2 scavenging capacity of T. indica leaf extracts was determined in 3 experiments. The aqueous extracts obtained from 3 works of Krishnaveni et al possessed H 2 O 2 scavenging capacities of 2.1–4.1% at a dose of 10 mg fresh leaves ( 39 – 41 ).…”

“…The ferrous ion-chelating capacity of the aqueous extract determined by Escalona-Arranz et al (49) was lower than that of the positive control quercetin (estimated binding constant = 1.1 vs. 2.0 mol/l). The antioxidant capacities of aqueous extracts obtained from fresh leaves determined in 6 studies by Krishnaveni et al as the equivalent to ascorbic acid were in the range of 2.5-5.5 mg ascorbic acid equivalent (AAE)/g extract (35)(36)(37)(39)(40)(41).…”