Antiradical activity, nutritional potential and flavonoids of the cladodes of Opuntia monacantha (Cactaceae)

Abstract

a b s t r a c tThis work reports the nutritional potential and the antiradical activity of the cladodes of the Brazilian Opuntia monacantha Haw. (Cactaceae), as well the isolation of kaempferol and isorhamnetin through activity-guided fractionation from its active MeOH extract. TLC, HPLC-DAD and NMR techniques were used to detect and identify the compounds. The water (91.1%), ash, protein, fibre and lipid contents (15.0, 5.4, 18.5 and 1.4 g/100 g, respectively) were shown to be quite similar to the mean values of other Opuntia spp., some widely used as food and forage. The antioxidant activity of their MeOH extract and of its n-hexane, EtOAc and n-BuOH fractions was assessed by measuring the ability of the fractions to scavenge DPPH radical, showing an activity enhancement for the fractions in comparison to the crude MeOH extract. The well-known free-radical scavenging activity of the isolated flavonoids reinforces the contribution of these compounds to the presented activity of the O. monacantha cladodes.

Phenolic composition, antioxidant and anti-inflammatory activities of extracts from Moroccan Opuntia ficus-indica flowers obtained by different extraction methods

“…In the literature few reports have been focused on antioxidant activity study of Opuntia flowers compared to cladodes and fruits (Valente, da Paixão, do Nascimento, dos Santos, Scheinvar, Moura, et al, 2010). The recent report was tested by DPPH method of flowers hexane extract (Ammar, Ennouri, Khemakhem, Yangui, & Attia, 2012).…”

Evaluation of Bauhinia variegata L. bark fractions for in vitro antioxidant potential and protective effect against H2O2-induced oxidative damage to pBR322 DNA

“…(Cactaceae) were assessed for their antioxidant activity by measuring their ability to scavenge DPPH radicals and the samples were able to inhibit the activity of DPPH radicals in a dose-dependent manner (Valente et al, 2010). Similarly, Hemalatha et al (2010) utilized the DPPH assay to assess the free radical scavenging activity of aqueous extract of Melothria maderaspatana Linn.…”

Proximate analysis, mineral composition, phytochemical contents, antioxidant and antimicrobial activities and GC-MS investigation of various solvent extracts of cactus cladode

“…It can grow in arid and semi-arid climates with a geographical distribution comprising Mexico, Latin America, South Africa and Mediterranean countries (Butera et al, 2002). The cladodes of this plant possess a higher potential source of nutritional fiber (Sáenz, 1997), polyphenols, vitamins and other specific compounds (Valente et al, 2010;El-Mostafa et al, 2014), and therefore are served for their nutraceutical and therapeutic effect as diarrhea, hyperlipidemia and anti-inflammatory, cosmetics and herbal remedy for diverse health problems in Tunisia (Ribeiro et al, 2010). The dehydration and grounding of the cladodes offer a large range of food products as well as pharmaceutical capsules (López et al, 2009).…”