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Alpinia galangal is a rhizome belongs to the family Zingeberaceae. Qualitative phytochemical analysis of plant extracts showed the presence of majority of the compound including terpenoids, flavonoids, alkaloids, tannins, saponins and glycosides. The hydro alcoholic hot extract has shown high total phenol content 14.50 ± 0.210 mg/g and hydro alcoholic cold shown 12.59 ± 0.295 mg/g. Alpinia galangal hydro alcoholic extract prepared by hot maceration showed potent antioxidant activity with IC value 7.7 ± 0.121 μg/ml. The antihepatotoxicity produced by the extract at concentration of 200 and 400 μg/ml was effective against the D-Galactosamine induced hepatotoxicity, whereas at the concentration of 600 and 800 μg/ml it was found to be cytotoxic for both the hydro alcoholic extracts prepared by cold and hot maceration process. A significant increase in the levels of ASAT, ALAT, ALP, total Bilirubin, direct Bilirubin (P<0.001) and a significant reduction in the levels of TGL, total proteins and albumin (P< 0.001) was observed in hepatocytes exposed to D-Galactosamine when compared to normal hepatocytes. These cells when treated alone with different extract of Alpinia Galanga showed a significant restoration of the altered biochemical parameters towards the normal (P< 0.001) when compared to D-Galactosamine treated group) and were dose dependent. A similar result was obtained with the silymarin. The antihepatotoxic effect of extracts of Alpinia galangal was found to be 200 – 400 μg/ml concentration.
Acorus calamus Linn which belongs to the family Araceae. Fractionation of hydro ethanolic extract was carried out by using solvent-solvent extraction. In the phytoconstituents analysis the petroleum ether fraction showed the presence of alkaloids, flavanoids, saponins, triterpinoids, phenolic, protein and carbohydrates, chloroform fraction showed the presence of flavanoids, saponins, triterpinoids, phenolics, carbohydrates, the ethyl acetate fraction showed the presence of alkaloids, saponins, triterpinoids, glycosides, the acetone fraction showed the presence of alkaloids, saponins, triterpinoids and glycosides, the aqueous fraction showed the presence of alkaloids, flavanoids, triterpenoids, glycosides, phenolics and carbohydrate. The ethyl acetate fraction showed a considerable increase in the total phenolic content than those of the crude extract. Chloroform and ethyl acetate fractions have shown relatively good antioxidant potential in DPPH, ethyl acetate fraction showed good antioxidant property in ABTS method, alkaline DMSO Method, Hydrogen peroxide radical scavenging activity, and total antioxidant capacity. Chloroform and ethyl acetate fractions showed relatively good antibacterial potential at a concentration below 500 µg/ml against both gram positive and gram negative microorganisms, by cup plate method, the zone of inhibition ranging from 13 to 25mm diameter. The chloroform fraction showed a moderate antifungal activity at a concentration of 500 µg/ml, by cup plate method, the zone of inhibition was found to be 12 to 19 mm diameter. MIC for ethyl acetate and acetone fractions was found to be less than 500 µg/ml when compared to the crude extract and the other fractions. In cytotoxicity studies, chloroform fraction showed cytotoxicity against the MCF-7 cells with CTC 50 value of 110 µg/ml, whereas the rest of the fractions were moderately cytotoxic to the MCF-7 cell line with CTC 50 values ranging from 170-360 µg/ml.
Curcuma aromatica belongs to the family zingiberaceae. The dried rhizome of Curcuma aromatica was extracted with different solvents like petroleum ether, Toluene, Chloroform, Ethyl acetate, Acetone, Ethanol, Water,. The Phytochemical studies of extracts showed the presence of terpenoids, flavonoids, tannins, alkaloids, saponins and protein and amino acids. Toluene extract of Curcuma aromatica has shown high Total Phenol content, 265±1.08 mg/g which is expressed in terms of Gallic acid and high total flavonol content, 175±1.56 mg/g expressed in terms of rutin. Toluene extract of Curcuma aromatica has shown potent antioxidant activity with IC50 value of 50.62±0.998 μg/ml, with IC50 value of 75±0.87 with IC50 value of 43.75±1.24 μg/ml with IC50 value of 0.038±1.54μg/ml in DPPH, LPO method, in the Scavenging of Hydrogen Peroxide Radicals method and in the ABTS Radical Scavenging Method respectively. Toluene extract at concentration of 200 to 800 μg/ml showed a significant restoration of the altered biochemical parameters towards the normal and it was comparable with standard silymarin, using D- Galactosamine as toxicant. Toluene extract was found to have dose dependent increase in percentage viability of the cells. The 200 and 400 mg/kg b.w toluene extracts of Curcuma aromatica showed a significant restoration of enzyme levels in in-vivo studies. The results were encouraging to state that the hepatoprotective activity exhibited by the toluene extracts of Curcuma aromatica was found to be nearly equivalent with standard silymarin.
Comprehensive Reviews in Food Science and Food Safety
Flower Extracts and Their Essential Oils as Potential Antimicrobial Agents for Food Uses and Pharmaceutical Applications2012 •
Free Radic. Antiox. 2(1): 13 – 20
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2016 •
Background: Alpinia galanga and Eryngium foetidum are two commonly used traditional aromatic plants of Manipur which is traditionally used in Aroma therapy. Rationale of pharmacological potentials of these plants are still unclear, even if few preliminary studies are available in literature for individual plants. Objective: This study was conducted for comparative assessment of antioxidant, antibacterial, and antidiabetic potential of A. galanga and E. foetidum. Materials and Methods: The rhizome of A. galanga and leaf of E. foetidum were extracted in methanol, ethanol and water. Phyto-chemicals of each extracts of Alpinia galanga and Eryngium foetidum were analyzed. The antioxidant potential of all the extracts was assessed by measuring total phenolic content, total flavonoid content and free radical scavenging potential was assessed by 1,1-diphenyl-2-picrilhydrazyl (DPPH) assay, antibacterial activity was assessed against various pathogenic and nonpathogenic bacteria in vitro by Kirby-Bauer agar well diffusion method and antidiabetic activity was assessed by α-amylase inhibition. Results: Both the plant showed presence of all the tested phytochemicals. It was observed that methanolic extracts of both the plants have higher phenolic content than ethanolic and aqueous extracts, however ethanolic extracts
Natural product communications
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