Abstract
BackgroundIn this study Aesculus indica fruit was subjected to isolation of phytochemicals. Two antioxidants quercetin and Mandelic acid were isolated in pure state. The free radical scavenging and acetyl choline esterase inhibitory potential of the crude extract and sub fractions were also determined.ResultsThe antioxidant capacity of crude extract, fractions and isolated compounds were determined by DPPH and ABTS methods. Folin-Ciocalteu reagent method was used to estimate the total phenolic contents and were found to be 78.34 ± 0.96, 44.16 ± 1.05, 65.45 ± 1.29, 37.85 ± 1.44 and 50.23 ± 2.431 (mg/g of gallic acid) in crude extract, ethyl acetate, chloroform, n-hexane and aqueous fractions respectively. The flavonoid concentration in crude extract, ethyl acetate, chloroform, n-hexane and aqueous fraction were; 85.30 ± 1.20, 53.80 ± 1.07, 77.50 ± 1.12, 26.30 ± 1.35 and 37.78 ± 1.25 (mg/g of quercetin) respectively. The chloroform fraction was more potent against enzymes, acetyl choline esterase and butyryl choline esterase (IC50 = 85 and 160 μg/ml respectively). The phenolic compounds in the crude extract and fractions were determined using HPLC standard method. Chlorogenic acid, quercetin, phloroglucinol, rutin, mandelic acid and hydroxy benzoic acid were detected at retention times 6.005, 10.062, 22.623, 30.597, 35.490 and 36.211 in crude extract and different fractions. The ethyl acetate fraction was rich in the targeted compounds and was therefore subjected to column isolation. The HPLC chromatogram of isolated compounds showed single peak at specified retention times which confirms their isolation in pure state. The isolated compounds were then characterized by FTIR and NMR spectrophotometric techniques.ConclusionThe Aesculus indica fruit extracts showed antioxidant and anticholine esterase inhibitory potentials. Two bioactive compounds were isolated in the pure form ethyl acetate fraction. From results it was concluded that the fruit of this plant could be used to minimize oxidative stress caused by reactive oxygen species.
Highlights
In this study Aesculus indica fruit was subjected to isolation of phytochemicals
The present investigation has led to the isolation of two reported compounds that have been isolated for the first time from Aesculus indica fruit
The antioxidant potential of the crude extract, fractions and isolated compounds were determined through DPPH and ABTS assays
Summary
In this study Aesculus indica fruit was subjected to isolation of phytochemicals. Two antioxidants quercetin and Mandelic acid were isolated in pure state. The humans uses medicinal plants to treat various diseases in animals as well [1, 2]. The use of medicinal plants for the treatment of various diseases in more prevalent in the developing countries About 50,000 out. The oxygen we take in respiration is converted into water Sometime it is partially oxidized into a number of products collectively known as reactive oxygen species which are free radicals and they harm cells and biologically important substances like DNA. The present interest in the analysis and use of antioxidant from medicinal plants is due to its wide use in scientific research and in industries [5,6,7,8,9]. Amongst the many sources plant are considered the most suitable and nontoxic [10]
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