Variation in flavonoid exudates in Eucryphia species from Australia and South America

Wollenweber, Eckhard; Dörr, Marion; Rozefelds, Andrew C.; Minchin, Peter R.; Forster, Paul I.

doi:10.1016/s0305-1978(99)00045-9

Cited by 13 publications

(9 citation statements)

References 17 publications

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“…In New Caledonia, the family comprises 6 genera, Acsmithia, Codia, Cunonia, Geissois, Pancheria, Weinmannia, represented by more than 80 species, all of which are endemic (Guillaumin, 1948). Few New Caledonian species have been studied for pharmaceutical properties, and the literature on the Cunoniaceae family is poor, in this subject (Luis Diego Gomez, 1995;Bosisio et al, 2000), particularly in relation to their chemistry (Bate-Smith, 1977;Wollenweber et al, 2000). However, some members of the Cunoniaceae are well known to have medicinal properties and are used to cure various diseases (Luis Diego Gomez, 1995;Cambie and Ash, 1931;Rageau, 1957).…”

Section: Introductionmentioning

confidence: 99%

Bioactive ellagitannins from Cunonia macrophylla, an endemic Cunoniaceae from New Caledonia

et al. 2005

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Section: Introductionmentioning

confidence: 99%

Bioactive ellagitannins from Cunonia macrophylla, an endemic Cunoniaceae from New Caledonia

et al. 2005

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“…Despite widespread use in folk medicine, these plants have been scarcely explored from a chemical and pharmacological standpoint. A few previous studies reported that these plants contains antioxidant components including flavonoids, tannins, diterpenes, steroids, and volatile oils [15,16,17].…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Effect of Extracts from Native Chilean Plants on the Lipoperoxidation and Protein Oxidation of Bovine Muscle

et al. 2019

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The present study investigated the antioxidant potential and the ability to inhibit lipid and protein oxidation in bovine meat of four native Chilean species: canelo (Drimys winteri), nalca (Gunnera tinctoria), tiaca (Caldcluvia paniculata), and ulmo (Eucryphia cordifolia). Phenolic acids (gallic, chlorogenic, caffeic, and coumaric) and flavonoids (catechin, epicatechin, and rutin) were identified and quantified by HPLC-MS/MS. Drimys winteri extract exhibited the highest antioxidant capacity evaluated by oxygen radical absorption capacity-red pyrogallol method (ORAC-PGR) and ferric ion reducing antioxidant power (FRAP) assays. All extracts decreased lipid oxidation induced by 2,2’-azo-bis(2-amidinopropane) dihydrochloride (AAPH) derived peroxyl radicals by anywhere between 30% and 50% the. In addition, canelo and nalca extracts decreased spontaneous oxidation by around 57% and 37% in relation to the control group, being even more efficient than butylated hydroxyanisole (BHT) a synthetic antioxidant. Protein oxidation in the myofibrillar proteins was evaluated by the formation of protein carbonyls and loss of protein thiols. The canelo, ulmo, and nalca extracts decreased the formation of carbonyls by around 30%. Plant extracts and BHT did not show an antioxidant effect on protein thiol loss. However, tiaca and ulmo extracts exerted a pro-oxidant effect, favoring the oxidation of sulfhydryl groups. The oxidizing system induced structural changes in myofibrillar protein (SDS−PAGE). A protective effect on protein structure from the canelo extract can be observed during the incubation when compared to samples incubated with AAPH.

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“…The literature on the Cunoniaceae family in the order Rosales (Cronquist 1988) is particularly poor, in this domain (Luis Diego Gomez 1995;Bosisio et al 2000) and in chemistry (Bate-Smith 1977;Wollenweber et al 2000). The majority of articles are concerned with taxonomy (Godley 1983;Hopkins 1998) and physiology (Burrows 1999).…”

Section: Introductionmentioning

confidence: 99%

Screening of 50 Cunoniaceae species from New Caledonia for antimicrobial properties

Fogliani¹,

Bouraïma-Madjèbi²,

Medevielle³

2002

New Zealand Journal of Botany

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Some species of the Cunoniaceae are reputed to possess medicinal properties. An investigation of 50 species of this family in New Caledonia has permitted the screening of 204 extracts (101 ethyl acetate extracts and 103 methanol extracts) for antimicrobial activities against one yeast (Candida albicans), one filamentous fungus (Fusarium oxysporum), and eight bacterial species (Erwinia carotovora, Klebsiella pneumoniae, Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis, Corynebacterium accolans, Bacillus subtilis).Ninety-six per cent of the plants exhibited antimicrobial activity, with a significant difference in the number of responses between fungi (18.8%) and bacteria (81.2%). Moreover, Gram +ve strains appear more sensitive than Gram -ve ones. The most active plants were Acsmithia meridionalis, A. pedunculata, Cunonia macrophylla, C. vieillardii, Pancheria alaternoides, and P. elegans. Cunonia macrophylla appears to be the best candidate for a chemical investigation using bioguided fractionation as extracts from its leaves and flowers effectively inhibited six strains (one yeast, two Gram -ve bacteria and three Gram +ve bacteria).

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Variation in flavonoid exudates in Eucryphia species from Australia and South America

Cited by 13 publications

References 17 publications

Bioactive ellagitannins from Cunonia macrophylla, an endemic Cunoniaceae from New Caledonia

Bioactive ellagitannins from Cunonia macrophylla, an endemic Cunoniaceae from New Caledonia

Antioxidant Effect of Extracts from Native Chilean Plants on the Lipoperoxidation and Protein Oxidation of Bovine Muscle

Screening of 50 Cunoniaceae species from New Caledonia for antimicrobial properties

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