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

Vrchovská, Vendula; Sousa, Carla; Valentão, Patrı́cia; Ferreres, Federico; Pereira, José Alberto; Seabra, Rosa M.; Andrade, Paula B.

doi:10.1016/j.foodchem.2005.06.019

Cited by 67 publications

(75 citation statements)

References 45 publications

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“…When comparing these results with those we obtained before in the same assay for B. oleracea var costata, it could be noticed that turnip flower buds exhibits similar antioxidant capacity as both B. oleracea var costata external and internal leaves Vrchovska et al, 2006), but it is much weaker than that of its seeds (Ferreres et al, 2007).…”

Section: Antioxidant Activitysupporting

confidence: 71%

“…The phenolic Llorach, GilIzquierdo, Ferreres, & Tomás-Barberán, 2003;Romani, Vignolini, Isolani, Ieri, & Heimler, 2006;Sousa et al, 2005;Vallejo, Tomás-Barberán, & Ferreres, 2004;Vrchovska et al, 2006) and organic acid Sousa et al, 2005;Vrchovska et al, 2006) composition of Brassica vegetables or byproducts has been widely investigated. In what concerns B. rapa, only the flavonoids in var.…”

Section: Introductionmentioning

confidence: 99%

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Chemical and antioxidative assessment of dietary turnip (Brassica rapa var. rapa L.)

et al. 2007

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The phenolic compounds and organic acids of turnip (Brassica rapa var. rapa L.) edible parts (leaves and stems, flower buds and roots) were determined by HPLC-DAD and HPLC-UV, respectively. The results revealed a profile composed of 14 phenolics (3-p-coumaroylquinic, caffeic, ferulic and sinapic acids, kaempferol0 -disinapoyl-2-feruloylgentiobiose, kaempferol 3-O-glucoside and isorhamnetin 3-O-glucoside) and six organic acids (aconitic, citric, ketoglutaric, malic, shikimic and fumaric acids). The quantification of the identified compounds showed kaempferol 3-O-sophoroside-7-O-glucoside, kaempferol 3-O-(feruloyl/caffeoyl)-sophoroside-7-O-glucoside, isorhamnetin 3,7-O-diglucoside and isorhamnetin 3-O-glucoside as the main phenolics, and malic acid as the organic acid present in highest amounts. A screening of the antioxidative potential was also performed by means of the DPPH radical scavenging assay. Turnip flower buds exhibited the strongest antioxidant capacity.

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Section: Antioxidant Activitysupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Chemical and antioxidative assessment of dietary turnip (Brassica rapa var. rapa L.)

et al. 2007

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“…As observed with B. oleracea leaves and seeds [20,[30][31] shikimic (6) and fumaric (7) acids were present in small amounts, representing less than 0.5 and 2% of total acids, respectively ( Table 3). While fumaric acid showed behaviour similar to that exhibited by malic acid, shikimic acid displayed an opposite tendency, significantly decreasing until 6 days of germination.…”

supporting

confidence: 64%

“…5,6). These acids were previously described in B. oleracea leaves and seeds [20,21,31], with the exception of pyruvic acid that is now reported for the first time in its sprouts. The total organic acids content increased ~46% from 45.7 g/kg after 2 days of germination to 66.9 g/kg on day 12 ( Table 3 and Fig.…”

Section: Changes In Organic Acids During Sproutingmentioning

confidence: 68%

Screening of Antioxidant Compounds During Sprouting of Brassica oleracea L. var. costata DC

Sousa¹,

Lopes²,

Pereira³

et al. 2007

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Abstract:The changes in antioxidant compounds of Brassica oleracea L. var. costata DC seeds were monitored during the first twelve days of seedling development. Sprouts were screened at time intervals of two days for phenolic compounds and organic acids. The identified phenolic compounds included esters of sinapic acid with glucose, gentiobiose and kaempferol, as well as sinapoylcholine. The organic acids were oxalic, aconitic, citric, pyruvic, malic, shikimic, and fumaric acids. During germination, a depletion of phenolic compounds was observed, although no qualitative changes were seen. Among individual compounds, kaempferol, choline and glucose esters of sinapic acid showed a marked decrease between days two and six, whereas the changes in gentiobiose esters of sinapic acid were smaller. The total organic acids content increased rapidly during the first four days, with less significant variations thereafter. Malic acid, the major organic acid found in sprouts, greatly contributed to this result though oxalic, pyruvic, and fumaric acids also increased in the same manner. In contrast, aconitic, citric and shikimic acids showed decreases between days two and twelve of germination.

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“…The organic acids profile and the antioxidant capacity of external and internal leaves were also previously described Vrchovska et al, 2006), with the external ones exhibiting higher antioxidant potential. However, nothing has been reported about tronchuda cabbage seeds.…”

Section: Introductionmentioning

confidence: 90%

Tronchuda cabbage (Brassica oleracea L. var. costata DC) seeds: Phytochemical characterization and antioxidant potential

et al. 2007

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Tronchuda cabbage (Brassica oleracea L. var. costata DC) seeds were studied for their chemical composition and antioxidant capacity. Thirteen phenolic compounds were characterized and quantified by reversed-phase HPLC-DAD-MS/MS-ESI and HPLC-DAD, respectively: two sinapoylgentiobiose isomers, three sinapoylglucose isomers, kaempferol-3-(sinapoyl)sophorotrioside-7-glucoside, sinapoylcholine, kaempferol-3,7-diglucoside-4 0 -(sinapoyl)glucoside, three disinapoylgentiobiose isomers, 1,2,2 0 -trisinapoylgentiobiose and 1,2-disinapoylglucose. Seven organic acids (aconitic, citric, ascorbic, malic, quinic, shikimic and fumaric acids) were also identified and quantified by HPLC-UV. The aqueous extract of tronchuda cabbage seeds was investigated for its capacity to act as a scavenger of DPPH Å radical and reactive oxygen species (superoxide radical, hydroxyl radical and hypochlorous acid), exhibiting antioxidant capacity in a concentration-dependent manner against all radicals. These results may be attributed to the high content of hydroxycinnamic derivatives and ascorbic acid.

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

Cited by 67 publications

References 45 publications

Chemical and antioxidative assessment of dietary turnip (Brassica rapa var. rapa L.)

Chemical and antioxidative assessment of dietary turnip (Brassica rapa var. rapa L.)

Screening of Antioxidant Compounds During Sprouting of Brassica oleracea L. var. costata DC

Tronchuda cabbage (Brassica oleracea L. var. costata DC) seeds: Phytochemical characterization and antioxidant potential

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