Assessing the chelating ability of Aerva Lanata: Adsorption of chromium from tannery effluent and its toxicity measurement

Abstract

the chelating ability of aqueous leaf extract of Aerva lanata was assessed in vitro. the aqueous leaf extract showed a dose dependent decrease in chelating ability using FeCl 2. the highest chelating ability of aqueous leaf extract was observed at 2. 10-5 g/ml (100 ± 0.00). the antioxidant activity of the aqueous leaf extract ranged from 42.13% to 88.66%. At 2. 10-5 g/ml concentration, a strong positive significant correlation was observed between chelating ability and total phenolics concentration (r = 0.94; P = 0.001). the chelating ability of aqueous leaf extract (2. 10-5 g/ml) showed a high positive significant correlation with antioxidant activity (r = 0.78; P = 0.001). Aqueous leaf extract removed the chromium from tannery effluent by 43 mg/g. Allium cepa toxicity test was performed on tannery effluent treated with aqueous leaf extract that increased the root length of onion.

Pharmaceutical, Ethnopharmacological, Phytochemical and Synthetic Importance of Genus Aerva: A Review

“…Compound 63 has also been isolated from A. javanica [85]. Quercetin-3-O-xylosyl-(1→2)rhamnoside (67) [91], Isorhamnetin-7-p-coumaroyl galactoside (68) [94], kaempferol-3-O-β-D-glucopyranosyl-(1→2)-α-Lrhamnopyranoside-7-O-α-rhamnopyranoside (69) [101], Aervanone (70) have been reported as the metabolites of A. persica [106] ( Figure 8).…”

“…Biosorption: Leaves of A. lanata are reported to possess sorption potential for chromium (VI) from wastewater with maximum extractability of 96.0%, 92.0% and 84.0% [68,69]. A. sanguinolenta was included in 36 species selected to find good bioaccumulators for Cd and Zn from the Padaeng zinc mine area, Thailand, A. sanguinoleta was a moderate accumulator showing bioaccumulation factor of 1.04 or Cd and 1.72 for Zn [70].…”