Antioxidant and free radical scavenging activity of flavonol glycosides from different Aconitum species

Braca, Alessandra; Fico, Gelsomina; Morelli, Ivano; Simone, Francesco De; Tomé, Franca; Tommasi, Nunziatina De

doi:10.1016/s0378-8741(03)00043-6

Cited by 171 publications

(97 citation statements)

References 16 publications

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“…In addition, sample A has a high amount of acylated flavonols, namely caffeoyl derivatives (Table 2). These compounds are reported to have high scavenging ability due to the presence of an O-dihydroxy structure in the caffeoyl moiety, which confers great stability to the radical form and participates in the electron delocalisation (Braca et al, 2003). The presence of high contents of caffeic acid derivatives may also contribute to its lower pro-oxidant effect, because of the presence of a catechol ring (Galati, Sabzevari, Wilson, & OÕ Brien, 2002).…”

Section: Antioxidant Activitymentioning

confidence: 99%

Antioxidative properties of tronchuda cabbage (Brassica oleracea L. var. costata DC) external leaves against DPPH, superoxide radical, hydroxyl radical and hypochlorous acid

et al. 2006

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The ability of the aqueous extract of tronchuda cabbage (Brassica oleracea L. var. costata DC) external leaves to act as a scavenger of DPPH Å and reactive oxygen species (superoxide radical, hydroxyl radical and hypochlorous acid) was investigated. A phytochemical study was also undertaken, and thirteen phenolic compounds and five organic acids were identified and quantified. Tronchuda cabbage extracts exhibited antioxidant capacity in a concentration-dependent manner in all assays, although some pro-oxidant effect was also noticed. The samples with higher phenolic and organic acid contents displayed the major antioxidant potentials.

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Section: Antioxidant Activitymentioning

confidence: 99%

Antioxidative properties of tronchuda cabbage (Brassica oleracea L. var. costata DC) external leaves against DPPH, superoxide radical, hydroxyl radical and hypochlorous acid

et al. 2006

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“…9). Either flavonol glycosides [44,45] or hydroxycinnamic esters [46] have demonstrated antioxidant activity. However, as the content of flavonol glycosides is higher in external leaves than in internal ones (95 and 54% of total phenolic compounds, respectively), this class of phenolics may contribute the most for the effects observed.…”

Section: Antioxidant Activitymentioning

confidence: 99%

“…On the other hand, the higher amount of acylated flavonols, namely caffeoyl derivatives, in the external leaves (Table 6) might also explain their potent antioxidant capacity. These compounds are reported to have high scavenging ability due to the presence of an o-dihydroxy structure in the caffeoyl moiety, which confers great stability to the radical form and participates in the electron delocalisation [44].…”

Section: Antioxidant Activitymentioning

confidence: 99%

Chemical composition and antioxidant activity of tronchuda cabbage internal leaves

Ferreres

Sousa

Vrchovská

et al. 2005

Eur Food Res Technol

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A phytochemical study was undertaken on the internal leaves of tronchuda cabbage (Brassica oleracea L. var. costata DC). Seventeen phenolic compounds were characterized and quantified by reversed-phase HPLC-DAD-ESI-MS n and HPLC/DAD, respectively: quercetin 3--p-coumaroylquinic acid, sinapic acid, kaempferol 3-O-sophoroside, 3 isomeric forms of 1,2-disinapoylgentiobiose, 1-sinapoyl-2-feruloylgentiobiose, 1,2,2-trisinapoylgentiobiose and 1,2 -disinapoyl-2-feruloylgentiobiose. Seven organic acids (aconitic, citric, ascorbic, malic, quinic, shikimic and fumaric acids) were also identified and quantified. The hot water extract of tronchuda cabbage internal leaves was investigated for its

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“…The DPPH radical scavenging activity was measured as per methods [24,25]. This method is based on measure of color absorbance of alcoholic DPPH solution (Blue color) after addition of antioxidant solution (Extract/Compound).…”

Section: 2-diphenyl-1-picrylhydrazyl (Dpph) Radical Scavenging Actimentioning

confidence: 99%

Phytochemical Screening and In-Vitro Antioxidant Activity of Peristrophe paniculata

Srikanth¹,

Devi²,

Kotirataiah³

et al. 2018

Herb Med

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Peristrophe paniculata is one of the traditional medicinal plant have been using in treatment of different diseases. The present study was carried out to provide scientific evidence about its medicinal use and phytochemical variation in different parts (stem, leaves and root) of it. Phytochemical studies were carried out for hexane, ethyl acetate and hydro alcoholic extracts using standard test procedures and antioxidant activity was carried on different free radicals i.e., superoxide, hydroxyl and 1, 1-diphenyl-2-picrylhydrazyl (DPPH). Hydroalcoholic, ethyl acetate and hexane extracts of P. paniculata were found to possess concentration dependent free radical scavenging activity on superoxide, hydroxyl and DPPH free radicals. Qualitative phytochemical screening of P. paniculata extracts revealed the presence of diverse in phytochemical constituents like steroids, terpenoids, flavonoids, alkaloids, glycosides, phenols, tannins and carbohydrates. The extracts of different parts gave negative and positive results for the amino acids, oils and saponins. The selected plant extracts showed concentration dependent percentage of inhibition on tested free radicals along with the standard drug ascorbic acid. The hexane extract of all parts of P. paniculata showed lower activity compared to ethyl acetate and hydroalcoholic extracts. Hydroalcoholic extract showed better activity. The variation in the activity and phytochemical constituents in them maybe due to the compounds present in them either as individually or in mixtures. The further research is need to evaluate more pharmacological activities and in isolation of the bioactive compounds from P. paniculata.

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Antioxidant and free radical scavenging activity of flavonol glycosides from different Aconitum species

Cited by 171 publications

References 16 publications

Antioxidative properties of tronchuda cabbage (Brassica oleracea L. var. costata DC) external leaves against DPPH, superoxide radical, hydroxyl radical and hypochlorous acid

Antioxidative properties of tronchuda cabbage (Brassica oleracea L. var. costata DC) external leaves against DPPH, superoxide radical, hydroxyl radical and hypochlorous acid

Chemical composition and antioxidant activity of tronchuda cabbage internal leaves

Phytochemical Screening and In-Vitro Antioxidant Activity of Peristrophe paniculata

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