Stability of the total antioxidant capacity and total polyphenol content of 23 commercially available vegetable juices before and after in vitro digestion measured by FRAP, DPPH, ABTS and Folin–Ciocalteu methods

Wootton-Beard, Peter; Moran, Aisling G; Ryan, Lisa

doi:10.1016/j.foodres.2010.10.033

Cited by 496 publications

(361 citation statements)

References 47 publications

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“…This difference could be attributed to the ability of the chemical compounds present in the extract to donate hydrogen or reduce iron ions. These results reinforce the importance of using two or more techniques for antioxidant activity evaluation as recommended by Wootton-Beard, Moran, Ryan (2011).…”

Section: Resultssupporting

confidence: 76%

Ethanolic extract of Passiflora edulis Sims leaves inhibits protein glycation and restores the oxidative burst in diabetic rat macrophages after Candida albicans exposure

Martins

Salles

Brigagão

et al. 2015

Braz. J. Pharm. Sci.

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This study was conducted to evaluate the effects of the ethanolic extract of Passiflora edulis leaves on blood glucose, protein glycation, NADPH oxidase activity and macrophage phagocytic capacity after Candida albicans exposure in diabetic rats. The Passiflora edulis Sims leaves were dried to 40°C, powdered, extracted by maceration in 70% ethanol, evaporated under reduced pressure and lyophilised. The biochemical tests performed were total phenolic content (TP) as determined by the Folin-Ciocalteu assay, trapping potential DPPH assay and total iron-reducing potential. Diabetes was induced by alloxan injection. Protein glycation was determined by AGE and fructosamine serum concentrations. Extracttreated diabetic animals demonstrated lower fructosamine concentrations compared with the diabetic group. Our results suggest that ethanolic Passiflora edulis Sims leaf extraction may have beneficial effects on diabetes and may improve glycaemic control in diabetic rats.Uniterms: Passiflora edulis Sims/pharmacognosy. Passiflora edulis Sims/ethanolic extract/effects. Blood glucose. Protein glycation. Reactive oxygen species. Diabetes/treatment/experimental study. Medicinal plants.O objetivo deste estudo foi avaliar os efeitos do extrato etanólico de folhas de Passiflora edulis sobre os níveis de glicose sanguínea, glicação protéica, produção de espécies reativas de oxigênio (ERO) e capacidade fagocítica de macrófagos de ratos diabéticos. As folhas de Passiflora edulis Sims foram secas a 40 °C, trituradas e o extrato preparado por maceração em solução hidroetanólica 70% (v/v) etanol foi evaporado sob pressão reduzida e liofilizado. Os testes químicos realizados demonstraram que além da presença de compostos fenólicos, determinada pelo método de Folin-Ciocalteu, o extrato apresentou potencial sequestrante de radicais DPPH e redutor de ferro. Nos animais diabéticos foi observado aumento na glicação protéica, avaliada pela concentração de frutosaminas e de produtos de glicação avançada (AGE), e redução na produção de ERO por macrófagos frente à Candida albicans, quando comparados ao grupo controle. O tratamento dos animais diabéticos com o extrato reduziu as concentrações de frutosaminas e manteve a produção de ERO em níveis semelhantes aos observados no grupo controle. Nossos resultados sugerem que o extrato etanólico de folhas de Passiflora edulis Sims pode apresentar efeitos benéficos sobre o diabetes e melhorar o controle glicêmico em ratos diabéticos.Unitermos: Passiflora edulis Sims/farmacognosia. Passiflora edulis Sims/extrato etanólico/efeitos. Glicose sanguínea. Glicação protéica. Espécies reativas de oxigênio. Diabetes/tratamento/estudo experimental. Plantas medicinais.

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Section: Resultssupporting

confidence: 76%

Ethanolic extract of Passiflora edulis Sims leaves inhibits protein glycation and restores the oxidative burst in diabetic rat macrophages after Candida albicans exposure

Martins

Salles

Brigagão

et al. 2015

Braz. J. Pharm. Sci.

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“…Phenolic compounds exhibit their antioxidant activity by various mechanisms such as donation of hydrogen atoms to free radicals and through connection to transition metal ions resulting in more stable forms 28 . Various physiological actions performed by polyphenols were related to the prevention of neurodegenerative and cardiovascular diseases, cancer, among others, mainly because of their high antioxidant capacity 29 . Many studies illustrates that water is the best solvent for extraction of phenol from most plant species.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant Activity, Total Phenolic and Total Flavonoid Content of Oenanthe Javanica Blume (Dc) Collected From Imphal West District

Bhaigyabati¹,

Devi²,

Chvi³

et al. 2017

Int. Res. J. Pharm.

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Oenanthe javanica Blume (DC) is an aromatic medicinal herb having pharmacological properties such as antioxidant, anti-quorum sensing, anticoagulant, antitoxic, hepatoprotective, anti-hepatitis B virus and memory improvement. It is one of the most consumed vegetable throughout the year in Manipur. The present study was carried out to analyze the phytochemical constituents, antioxidant activity and total phenolic and total flavonoid content of Oenanthe javanica. Preliminary phytochemical analysis was done using standard procedure. Total phenolic, total flavonoid content and antioxidant activities were determined spectrophotometrically in crude aqueous and methanolic extracts. Preliminary phytochemical analysis indicates the presence of amino acids, carbohydrates, proteins, flavonoids, phenolic compounds, steroids and terpenoids, saponins, tannins, cardiac glycosides except alkaloids and phlobatannins. The present study demonstrates the antioxidant activity of Oenanthe javanica Blume (DC) due to the various phytochemicals present in the extract which confer their traditional uses as food and medicine.

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“…In order to gather comprehensible information about the total antioxidant capacity of a food [184], at least two of these tests, and preferably all, should be combined, if possible, taking into account both the arguments for and against, and its applicability. Table 5 shows selected articles [20,190,198,204,231,[251][252][253][254][255][256][257][258][259][260] in which more than one criterion has been applied to real samples with practical purposes. Advantages and limitations of the most common chemical methods of determination of the antioxidant capacity are compiled in Table 6 [160, 161, 167, 171-173, 176, 184, 231, 261-263].…”

Section: Flavonoids -From Biosynthesis To Human Healthmentioning

confidence: 99%

Antioxidant Capacity of Anthocyanin Pigments

Martín¹,

Kuskoski²,

Navas³

et al. 2017

Flavonoids - From Biosynthesis to Human Health

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Anthocyanins are a family of natural pigments classified into the group of flavonoids, considered to be responsible for the color and taste of many fruits and vegetables, i.e. berries. Anthocyanins are common components of the human diet. Besides their interest as colorant because of their coloring properties, the study of anthocyanin compounds stems from their wide applicability in the prevention and even in the treatment of various human diseases. However, various aspects of the pharmacological roles of anthocyanins remain in the dark, having still several obstacles to the development of robust diets or prescribing lines on consumption of anthocyanins. The chemical structure of anthocyanins determines in large measure its capacity and efficacy as an antioxidant agent. In this study, the following aspects are reviewed: the antioxidant effect of anthocyanin pigments; the oxidative stress, the bioavailability after intake and biological aspects of anthocyanins, the method for measuring the antioxidant activity of anthocyanins, the relationship between structure and activity; and the influence of the anthocyanins in the antioxidant activity of wines. Finally an overview of some potential uses in food industry is attempted mainly focusing in the anthocyanin encapsulation topic. Attention has been paid to the more recent publications in the field.

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Stability of the total antioxidant capacity and total polyphenol content of 23 commercially available vegetable juices before and after in vitro digestion measured by FRAP, DPPH, ABTS and Folin–Ciocalteu methods

Cited by 496 publications

References 47 publications

Ethanolic extract of Passiflora edulis Sims leaves inhibits protein glycation and restores the oxidative burst in diabetic rat macrophages after Candida albicans exposure

Ethanolic extract of Passiflora edulis Sims leaves inhibits protein glycation and restores the oxidative burst in diabetic rat macrophages after Candida albicans exposure

Antioxidant Activity, Total Phenolic and Total Flavonoid Content of Oenanthe Javanica Blume (Dc) Collected From Imphal West District

Antioxidant Capacity of Anthocyanin Pigments

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