A new saponin from mature tubers of Cyperus rotundus

Singh, Priyanka; Singh, Sandeep

doi:10.1016/0031-9422(80)83046-9

Cited by 32 publications

(20 citation statements)

References 4 publications

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“…16,17 The previous phytochemical studies of C. rotundus L. led to the isolation of sesquiterpenes, 13,[18][19][20][21][22][23] flavonoids, 3,5,8,24,25 phenylpropanoids, 5,26,27 phenolic acids, 5,26 alkaloids, 28 and saponins. 29 In 2013 Zhou and Zhang reported the isolation of iridoid glycosides from C. rotundus rhizomes. 27 This prompted further investigation of the EtOAc fraction of the MeOH extract of C. rotundus rhizomes aiming to isolate iridoids.…”

Section: Introductionmentioning

confidence: 99%

Iridoids and other constituents from Cyperus rotundus L. rhizomes

Mohamed

2015

Bulletin of Faculty of Pharmacy, Cairo University

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On continuation of the phytochemical investigation of the MeOH extract of Cyperus rotundus L. Rhizomes, four compounds namely, methyl 3,4-dihydroxy benzoate (1), ipolamiide (2), 6b-hydroxyipolamiide (3), and rutin (4) were isolated. Their structures were established on the basis of 1D and 2D NMR spectroscopic analyses as well as ESIMS spectral data. Compounds 2 and 3 are reported here for the first time from the genus Cyperus and 1 for the first time from the plant. Co-treatment of CCl 4 hepatic injured rats with the total MeOH extract (TME) and EtOAc fraction significantly restored the hepatic marker enzymes and total bilirubin to near-normal values compared to silymarin (reference drug).ª 2015 Production and hosting by Elsevier B.V. on behalf

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Section: Introductionmentioning

confidence: 99%

Iridoids and other constituents from Cyperus rotundus L. rhizomes

Mohamed

2015

Bulletin of Faculty of Pharmacy, Cairo University

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“…The purple nutsedge is known to contain allelochemicals, viz. polyphenols (Komai and Ueki 1975), sesquiterpenes (Komai et al 1977), flavonol glycoside (Singh and Singh 1980a), saponin (Singh and Singh 1980b), p-hydroxybenzoic acid, p-coumaric acid, o-coumaric acid, caffeic acid and ferulic acid (Leela 1995). There are no reports on the allelopathic effects of C. rotundus in vitro and ex vitro banana plants.…”

Section: Introductionmentioning

confidence: 99%

Allelopathic effects of Cyperus rotundus extract in vitro and ex vitro on banana

2009

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Allelopathic effects of Cyperus rotundus on banana 'Grande Naine' were studied in vitro as well as ex vitro. To study the allelopathic effects in vitro, the Cyperus extract was added to the multiplication medium during preparation before adjusting the pH. Of the four concentrations, 0.2 and 0.6% decreased the shoot multiplication and shoot length but 1 and 2% extract completely inhibited the shoot multiplication but induced rooting in 50 and 28% shoots, respectively. For the ex vitro studies, the Cyperus extract was added to the hydroponic medium during the hardening of in vitro raised banana plantlets. The extract of 1 and 2% concentrations decreased the shoot and root length, number of leaves and new roots, fresh weight, total chlorophyll and protein. The fluorescence intensity ratio was successively increased resulting in decreased photosynthesis.

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“…[3][4][5] Recent investigations have shown that the antioxidants with free-radical scavenging properties of plant origins could have great importance as therapeutic agents in ageing process and free radical-mediated diseases including neurodegeneration. [6,7] Plant extracts [8] and plant products such as flavonoids and other polyphenolic constituents have been reported to be effective radical scavengers and inhibitors of lipid peroxidation. [9,10] Many synthetic antioxidant compounds have shown toxic and/or mutagenic effects, which have stimulated the interest of many investigators to search natural antioxidant.…”

Section: Introductionmentioning

confidence: 99%

Phytochemical analysis and in vitro antioxidant activity of Uncaria gambir

Amir¹,

Mujeeb²,

Khan³

et al. 2012

Int J Green Pharm

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The present research work was carried out to evaluate the antioxidant potential and antiradical property of methanolic extract of Uncaria gambir. Antioxidant and radical scavenging activity were determined by using different in vitro assays including reducing power assay, superoxide anion scavenging activity assay, hydroxyl radical scavenging activity assay, nitric oxide scavenging activity assay, DPPH free radical scavenging assay and hydrogen peroxide method. Preliminary phytochemical screening revealed that the extract of U. gambir possesses flavonoids, alkaloids and phenolic materials. In the present investigation, quantitative estimation of flavonoids content and phenolic content was also carried out by colorimetric methods, using aluminium chloride and Folin-Ciocalteu reagent method, respectively, to establish relationship between antioxidant activity and total phenolics and flavonoid contents. The total phenolic and flavonoid contents were found to be 18.37±2.79 mg gallic acid equivalents (GAE)/g dry weight and 5.82±2.23 mg rutin equivalents (RE)/g dry weight, respectively. The extract showed significant antioxidant activity in a dose-dependent manner in all the assays. The IC 50 values of all parameters were determined. Ascorbic acid was used as standard. The results obtained in the present study indicated that U. gambir extract could be a potential source of natural antioxidant.

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A new saponin from mature tubers of Cyperus rotundus

Cited by 32 publications

References 4 publications

Iridoids and other constituents from Cyperus rotundus L. rhizomes

Iridoids and other constituents from Cyperus rotundus L. rhizomes

Allelopathic effects of Cyperus rotundus extract in vitro and ex vitro on banana

Phytochemical analysis and in vitro antioxidant activity of Uncaria gambir

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