Phenolic compounds and antioxidant activities of buckwheat (Fagopyrum esculentum Moench) hulls and flour

Quettier-Deleu, Christel; Gressier, Bernard; Vasseur, J.; Dine, T.; Brunet, C.; Luyckx, M.; Cazin, M.; Cazin, Jean‐Claude; Bailleul, François; Trotin, F

doi:10.1016/s0378-8741(00)00196-3

Cited by 900 publications

(478 citation statements)

References 24 publications

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“…Choi et al (2006) suggested that many biological activities in plants are due to the content of total phenols like flavonoids and tannins. Plant phenols have potential antioxidant activity, mainly by acting as oxygen radical scavengers (Quettier-Deleu et al, 2000). Other studies (Souza et al, 2007;Tadhani et al, 2007) showed that extracts with high content of phenols have high antioxidant activity and that was seen in this study since chloroformic extract exhibited the smaller phenol content and antioxidant activity.…”

Section: Resultssupporting

confidence: 67%

Histochemical, phytochemical and biological screening of Plinia cauliflora (DC.) Kausel, Myrtaceae, leaves

Souza-Moreira¹,

Moreira²,

Sacramento³

et al. 2010

Rev. bras. farmacogn.

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RESUMO: "Rastreamento histoquímico, fitoquímico e biológico de folhas de Plinia cauliflora (DC.) Kausel (Myrtaceae)". No presente trabalho, foram investigadas a composição química e atividades biológicas de extratos brutos obtidos com etanol 50%, etanol 70%, acetona:água (7:3; v/v) e clorofórmio das folhas de Plinia cauliflora (DC.) Kausel, Myrtaceae, uma árvore nativa de várias regiões do Brasil. Os rastreamentos histoquímico e fitoquímico foram feitos de acordo com reações de caracterização e cromatografia em camada delgada. Para auxiliar na padronização dos extratos foram realizadas determinações do teor de fenóis totais e de flavonoides totais, espectrofotometricamente. A atividade antioxidante foi analisada pela porcentagem de sequestro de radicais livres usando solução de DPPH. A atividade antimicrobiana foi avaliada frente a bactérias patogênicas Gram-positivas, Gram-negativas e espécies de Candida utilizando os métodos de difusão em ágar e determinação da concentração inibitória mínima (MIC) de acordo com métodos padronizados. As folhas apresentaram lipídeos nas cavidades secretoras e fenóis, principalmente taninos, nas nervuras e parênquima paliçádico. Os extratos polares apresentaram flavonoides, taninos, alto teor de fenóis totais e de flavonoides totais. Os extratos mostraram elevada atividade antioxidante e a atividade antimicrobiana foi melhor contra as espécies de Candida do que contra as bactérias.Unitermos: Plinia cauliflora, Myrtaceae, rastreamento químico, atividade antioxidante, atividade antimicrobiana. ABSTRACT:In this work, chemical and biological activities of crude extracts obtained with 50% ethanol, 70% ethanol, acetone:water (7:3; v/v) and chloroform of Plinia cauliflora (DC.) Kausel, Myrtaceae, leaves, a native tree from several regions of Brazil, was investigated. Histochemical and phytochemical screenings were done according to characterization reactions and thin layer chromatography. To assist in extracts standardization, total phenol and flavonoids content spectrophotometric was performed. Antioxidant activity was analyzed by percentage of radical scavenging using DPPH solution. Antimicrobial activity was evaluated against Gram-positive, Gram-negative pathogenic bacteria and species of Candida using agar diffusion and minimal inhibitory concentration (MIC) determination methods according to standard methods. The leaves presented lipids at secretory cavity and phenols, mainly tannins, in nervures and palisade parenchyma. Polar extracts showed flavonoids, tannins and high content of phenols and flavonoids. The extracts showed great antioxidant activity and antimicrobial activity was better against Candida species than against bacteria.

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Section: Resultssupporting

confidence: 67%

Histochemical, phytochemical and biological screening of Plinia cauliflora (DC.) Kausel, Myrtaceae, leaves

Souza-Moreira¹,

Moreira²,

Sacramento³

et al. 2010

Rev. bras. farmacogn.

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“…The aluminum chloride method was used according to Quettier-deleu et al for determination of total flavonoid content of all crude extracts of E. macroclada [8] . A total of 1 mL of various concentrations of all extracts was mixed with 1 mL of 2% methanolic aluminum chloride solution.…”

Section: Determination Of Total Flavonoid Contentmentioning

confidence: 99%

Chemical composition and antioxidant activity of a Lebanese plant Euphorbia macroclada schyzoceras

Farhan

Rammal

Hijazi

et al. 2013

Asian Pacific Journal of Tropical Biomedicine

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“…The pseudocereal buckwheat has received renewed interest due to, among others, its content of phenolic compounds (flavanols, flavonoids) with antiperoxidative potential (Quettier-Deleu et al, 2000). During the production of roasted groats (known in Poland as kasha), large quantities of buckwheat by-products, such as hulls and bran, are formed.…”

Section: Introductionmentioning

confidence: 99%

“…During the production of roasted groats (known in Poland as kasha), large quantities of buckwheat by-products, such as hulls and bran, are formed. Compared with groats, hulls contain more flavonoids (rutin, quercetin) than flavanols (Quettier-Deleu et al, 2000). Studies on human volunteers FLIS M. ET AL.…”

Section: Introductionmentioning

confidence: 99%

The effect of grain polyphenols and the addition of vitamin E to diets enriched with α-linolenic acid on the antioxidant status of pigs

Flis

Sobótka²,

Antoszkiewicz³

et al. 2010

J. Anim. Feed Sci.

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The aim of this study was to determine the antioxidant status and blood lipid profile of pigs fed diets enriched with α-linolenic acid (ALA) and containing two sets of antioxidants: phenolic compounds of diet components (barley, triticale, naked oat and buckwheat by-products) only, or phenolic compounds and vitamin E supplementation. A three-factorial experiment was performed on growing-finishing barrows (6-7 pigs per group) fed individually diets supplemented with 3% linseed oil, formulated as isoenergetic, isofibre and isofat. The influence of the type of diet (barleytriticale-based control diets vs 40%-oat-based diets), the share of buckwheat by-products (0 vs 10/12% of grower/finisher diets), and vitamin E supplementation (0 vs 100 IU⋅kg -1 ) was evaluated. The analysed feed materials could be classified according to their total phenolic compound (TPC) content and in vitro antioxidant capacity (TAC) in the following decreasing order: buckwheat hulls and bran >> barley >> naked oat ≈ triticale. Diets with higher levels of TPC and TAC, i.e. barleytriticale-based control diets and diets containing buckwheat by-products, increased erythrocyte superoxide dismutase and glutathione peroxidase activity, similarly as 100 IU⋅kg -1 vitamin E supplementation, thus suggesting an improvement in the antioxidant status of pigs. Only vitamin E supplementation significantly (over four-fold) increased vitamin E concentrations in the blood serum and M. longissimus dorsi (LD) of pigs, and decreased the rate of lipid oxidation in LD. The obtained results suggest that the phenolics present in cereal grains and in buckwheat, occurring as 540 POLYPHENOLS -ANTIOXIDANT STATUS IN PIGS natural antioxidants in ALA-rich and vitamin E-deficient diets, are not sufficient to maintain the oxidative stability of pork. Diets containing 40% oat significantly improved the HDL/TCH and HDL/LDL ratios in serum.

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Phenolic compounds and antioxidant activities of buckwheat (Fagopyrum esculentum Moench) hulls and flour

Cited by 900 publications

References 24 publications

Histochemical, phytochemical and biological screening of Plinia cauliflora (DC.) Kausel, Myrtaceae, leaves

Histochemical, phytochemical and biological screening of Plinia cauliflora (DC.) Kausel, Myrtaceae, leaves

Chemical composition and antioxidant activity of a Lebanese plant Euphorbia macroclada schyzoceras

The effect of grain polyphenols and the addition of vitamin E to diets enriched with α-linolenic acid on the antioxidant status of pigs

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