Antioxidant activity of the roots of Decalepis hamiltonii (Wight &amp; Arn.)

Srivastava, Anup; Harish, Shereen R.; Shivanandappa, T.

doi:10.1016/j.lwt.2005.07.005

Cited by 97 publications

(70 citation statements)

References 38 publications

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“…The inhibition of lipid peroxidation was assayed by the method of Srivastava et al (2006). Five µg of rat liver were homogenized in 20 ml of Tris-HCl buffer (c = 40 mmol/l, pH 7.0).…”

Section: Reactive Oxygen Species Scavenging Activity Assaymentioning

confidence: 99%

Antioxidant and radical oxygen species scavenging activities of 12 cultivars of blue honeysuckle fruit

Rop¹,

Řezníček²,

Mlček³

et al. 2011

Hortic. Sci.

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Rop O., Řezníček V., Mlček J., Juríková T., Balík J., Sochor J., Kramářová D., 2011. Antioxidant and radical oxygen species scavenging activities of 12 cultivars of blue honeysuckle fruit. Hort. Sci. (Prague), 38: 63-70.The fruit of blue honeysuckle (Lonicera caerulea L. var. kamtchatica (Sevast.) Pojark.) belongs to the fruit of great value because of itsunique chemical composition. The aim of our measurement of this fruit species was to select the cultivars which could be the most suitable food supplement in relation to strengthening human immunity system. The comparison of the fruit of 12 cultivars was made. The highest contents of polyphenolic substances were recorded in the cultivar Zolushka with the value of 9.03 g of gallic acid/kg fresh mass. In particular cultivars the DPPH (2,2-diphenyl-1-picrylhydrazyl) test was performed to determine antioxidant activity which ranged from 6.59-10.17 g of ascorbic acid equivalent/kg fresh mass. For comparison, scavenging activity of reactive oxygen species (superoxide anion, hydroxyl radical, and nitric oxide) was determined by using a 25% methanolic extract of fruit of particular cultivars. Antioxidant potential was also assessed using the rat liver slice model. The highest values of scavenging activity were found in the cultivars Zolushka, Goluboe vreteno, and Gerda. The cultivars Zolushka, Goluboe vreteno, and Gerda had also high values of flavonoids. The presented results may be used when popularizing this fruit species and also when studying the properties of new food and genetic resources.

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“…The inhibition of lipid peroxidation was assayed by the method of Srivastava et al (2006). Five µg of rat liver were homogenized in 20 ml of Tris-HCl buffer (c = 40 mmol/l, pH 7.0).…”

Section: Reactive Oxygen Species Scavenging Activity Assaymentioning

confidence: 99%

Antioxidant and radical oxygen species scavenging activities of 12 cultivars of blue honeysuckle fruit

Rop¹,

Řezníček²,

Mlček³

et al. 2011

Hortic. Sci.

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“…The roots of Dh possess potent antioxidant properties and several novel antioxidant molecules have been isolated and characterized which could be associated with their alleged health benefits [19][20][21]. It was earlier reported that the aqueous extract of Dh has more antioxidant properties compared to the different solvent extracts [20,22].…”

Section: Introductionmentioning

confidence: 99%

Neuroprotective Effect of Decalepis hamiltonii in Paraquat-Induced Neurotoxicity in Drosophila melanogaster: Biochemical and Behavioral Evidences

et al. 2013

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In this paper, we have demonstrated for the first time, the antioxidant and neuroprotective effects of Decalepis hamiltonii (Dh) root extract against paraquat (PQ)-induced oxidative stress and neurotoxicity in Drosophila melanogaster. Exposure of adult D. melanogaster (Oregon K) to PQ induced oxidative stress as evidenced by glutathione depletion, lipid peroxidation and enhanced activities of antioxidant enzymes such as catalase, superoxide dismutase as well as elevated levels of acetylcholine esterase. Pretreatment of flies by feeding with Dh extract (0.1, 0.5 %) for 14 days boosted the activities of antioxidant enzymes and prevented the PQ-induced oxidative stress. Dietary feeding of Dh extract prior to PQ exposure showed a lower incidence of mortality and enhanced motor activities of flies in a negative geotaxis assay; both suggesting the neuroprotective potential of Dh. Based on the results, we contemplate that the roots of Dh might prevent and ameliorate the human diseases caused by oxidative stress. The neuroprotective action of Dh can be attributed to the antioxidant constituents while the precise mechanism of its action needs further investigations.

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“…Conseqüentemente, a avaliação de um parâmetro isolado requer a utilização de sistemas modelos para a obtenção de informações mais precisas em relação à estabilidade destes pigmentos. Tendo em vista as propriedades funcionais das antocianinas, diversas pesquisas são focadas na determinação do conteúdo de antocianinas e sua correlação com a atividade antioxidante 9,14,15,17,23,26 , buscando, assim, Polifenóis, antocianinas totais e atividade antioxidante de um sistema modelo de geléia de uvas ampliar a aplicação destes pigmentos naturais na indústria de alimentos e cosméticos.…”

Section: Introductionunclassified

Índice de polifenóis, antocianinas totais e atividade antioxidante de um sistema modelo de geléia de uvas

Falcão¹,

Chaves²,

Kuskoski³

et al. 2007

Ciênc. Tecnol. Aliment.

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*A quem a correspondência deve ser enviada ResumoAntocianinas são pigmentos fenólicos com potencial para substituição dos corantes artificiais vermelhos; porém, estes se apresentam instáveis frente ao processamento de alimentos, sendo a temperatura um dos principais fatores envolvidos na degradação da cor destes pigmentos. O objetivo deste trabalho foi avaliar a concentração de compostos fenólicos e a capacidade antioxidante de um sistema modelo de geléia de uvas (SMG) Isabel (Vitis labrusca) e Refosco (Vitis vinifera L.) elaborado a 45 °C, utilizando como agente espessante uma mistura de gomas xantana e locusta. Nos SMGs elaborados, avaliou-se a estabilidade dos pigmentos antociânicos e determinou-se polifenóis totais (IPT), antocianinas totais (AT). A atividade antioxidante foi medida utilizando os métodos de captura de radicais estáveis como o radical DPPH (2,2-difenil-1-picril-hidrazila) e o radical ABTS (2,2'-azino-bis-(3-etilbenzotiazolina-6-ácido sulfônico)). Avaliou-se também a concentração de AT nos extratos de uvas utilizados na elaboração do SMG. Um alto coeficiente de correlação foi encontrado entre AT e IPT dos SMGs e a atividade antioxidante. Os melhores resultados quanto à concentração de IPT, AT e em relação à atividade antioxidante foram obtidos para o SMG elaborado com uva Refosco. O método utilizado para a elaboração dos SMGs foi efetivo na preservação da cor antocianinas e das propriedades antioxidantes dos compostos fenólicos totais avaliados. Palavras-chave: uva; antocianinas; compostos fenólicos; atividade antioxidante; estabilidade. AbstractAnthocyanins are phenolic pigments with a potential for replacing synthetic red dyes. However, their stability is affected by food processing, and temperature is one of the main factors involved in these pigments' color degradation. The aim of this work was to evaluate the concentration of phenolic compounds and the antioxidant capacity of a grape jelly model system (JMS). The grape varieties used here were Isabel (Vitis labrusca) and Refosco (Vitis vinifera L.) and the jelly was cooked at 45 °C, using a mixture of xanthan gum and locust bean gum as the thickening agent. Two JMSs were prepared and analyzed to determine their anthocyanin stability, total polyphenol index (TPI) and total anthocyanin content (TA). The antioxidant activity was measured by the DPPH and ABTS radical-scavenging methods. The TA concentration was also determined in the grape extracts used in the preparation of the JMSs. The best results in terms of TPI, TA and antioxidant activity were obtained for the JMS produced with Refosco grapes. A high correlation coefficient was found between the TA and TPI in the JMSs and the antioxidant activity. The method used in the production of the JMSs was effective in preserving the color of anthocyanins and the antioxidant properties of the total phenolic compounds evaluated here. Keywords: grape; anthocyanins; phenolic compounds; antioxidant activity; stability.Índice de polifenóis, antocianinas totais e atividade antioxidante de um sistema m...

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Antioxidant activity of the roots of Decalepis hamiltonii (Wight & Arn.)

Cited by 97 publications

References 38 publications

Antioxidant and radical oxygen species scavenging activities of 12 cultivars of blue honeysuckle fruit

Antioxidant and radical oxygen species scavenging activities of 12 cultivars of blue honeysuckle fruit

Neuroprotective Effect of Decalepis hamiltonii in Paraquat-Induced Neurotoxicity in Drosophila melanogaster: Biochemical and Behavioral Evidences

Índice de polifenóis, antocianinas totais e atividade antioxidante de um sistema modelo de geléia de uvas

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