Antioxidant activities of natural phenolic compounds from Acacia confusa bark

Tung, Yu Tang; Wu, June H.; Kuo, Yueh Hsiung; Chang, Shu−Tong

doi:10.1016/j.biortech.2006.04.017

Cited by 126 publications

(75 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ethanol is preferred for the extraction of antioxidant compounds mainly because of its lower toxicity. [27,28] Conforti et al [24] reported TPC (chlorogenic acid equivalents) from extracts of cultivated and wild fennel to be 100 and 151 mg/g extract, respectively. According to Mata et al, [11] the ethanol extract of fennel seed revealed 63.1 mg/g TPC (pyrogallol equivalents).…”

Section: Percentage Inhibition Of Linoleic Acid Oxidationmentioning

confidence: 99%

Antioxidant and antimicrobial activities of essential oil and extracts of fennel (Foeniculum vulgare Mill.) seeds from Pakistan

Anwar

Ali

Hussain

et al. 2009

Flavour & Fragrance J

209

113

View full text Add to dashboard Cite

Section: Percentage Inhibition Of Linoleic Acid Oxidationmentioning

confidence: 99%

Antioxidant and antimicrobial activities of essential oil and extracts of fennel (Foeniculum vulgare Mill.) seeds from Pakistan

Anwar

Ali

Hussain

et al. 2009

Flavour & Fragrance J

209

113

View full text Add to dashboard Cite

“…2 The icariin contents of different extracts and fractions from leaves (EL) and stem (EAS) of Epimedium koreanum Nakai. EE ethanol extract; PEF petroleum ether fraction; EAF ethyl acetate fraction; nBF n-butanol fraction; WF water fraction pounds (Schubert et al 2007;Tseng et al 1997;Turkmen et al 2006;Tung et al 2007). Compared with the extract and fractions from stem, the extracts and fractions from leaves were found to own higher antioxidant activity.…”

Section: Dpph Radical Scavenging Activitymentioning

confidence: 99%

Comparative studies on antioxidant activities of extracts and fractions from the leaves and stem of Epimedium koreanum Nakai

et al. 2011

View full text Add to dashboard Cite

The antioxidant potency of various extracts and fractions from the leaves and stem of Epimedium koreanum Nakai was evaluated using three esteblished methods, specifically the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radica-scavenging activity assay, the inhibitory effect on lipid peroxidation induced by Fe 2+ /ascorbate (MDA) assay and the ferric reducing power (FRP) assay. The amounts of total phenolics and total flavonoids in the extracts and fractions were determined by spectrophotometric methods and the content of icariin was determined by HPLC. The results showed that all the extracts and fractions exhibited antioxidant activities at different magnitudes of potency. The leaf extract and fractions demonstrated superior antioxidant activity in most of the assays. The decreasing order of antioxidant activities among the extracts/fractions assayed through the three methods were found to be n-BuOH fraction>ethyl acetate fraction>ethanol extract>petroleum ether fraction>-water fraction. A positive correlation was found between the amounts of total phenolics, total flavonoids and icariin and DPPH radical scavenging activity (R 2 =0.9935, 0.9944 and 0.9997, respectively) and inhibitory activity on lipid peroxidation (R 2 =0.9987, 0.9830 and 0.9886, respectively). The results suggested that Icariin was one of the main constituents contribute to the antioxidant activity of Epimedium koreanum Nakai and the n-BuOH fractions of leaf extract might be valuable antioxidant natural sources.

show abstract

“…The antioxidant activity of phenolic compounds is mainly because of their redox properties, which allow them to act as reducing agents, hydrogen donators and singlet oxygen quenchers. In addition, they show metal-chelating potential (Rice-Evans, Miller J, Bolwell, & Bramley, 1995;Tung, Wu, & Chang, 2007). Moreover, phenolic compounds have different biological activities as antibacterial, anticarcinogenic, anti-inflammatory, anti-viral, anti-allergic, estrogenic, and immune-stimulating agents (Larson, 1988;Viuda-Martos, Ruiz-Navajas, Ferna´ndez-Lo´pez, & Pe´rez-Á lvarez, 2007.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant activity and total phenolic compounds of myrtle extracts Actividad antioxidante y contenido de compuestos fenólicos totales en extractos de myrtus

Amensour

Sendra

Abrini

et al. 2010

CyTA - Journal of Food

View full text Add to dashboard Cite

The total phenolic content, flavonoid content and antioxidant activity of methanol, ethanol, water and ethyl acetate extracts of the leaves and berries of myrtle (Myrtus communis) were measured. Total phenolic content was assessed by the Folin-Ciocalteau assay, total flavonoid content was assessed by a colorimetric method using rutin as standard flavonoid, whereas antioxidant activity was assessed by measuring the ability of the extracts to scavenge the 2,2 0 -azinobis (3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt (ABTS þ ) radical. The results pointed to the significant antioxidant activities of the methanol and water extracts, the overall strength being in the order of methanol 4 water 4 ethanol 4 ethyl acetate in both, leaf and berry extracts. In all cases, the extracts obtained from leaves showed higher antioxidant activity and higher total phenolic and flavonoid contents than the corresponding extracts obtained from berries. The phenolic content exhibited a strong association (r 2 ¼ 0.9452) with antioxidant activity.Keywords: Myrtus communis; antioxidant activity; phenolic compounds; flavonoid Se determino´el contenido de compuestos feno´licos totales y de flavonoides, ası´como la actividad antioxidante de diferentes extractos (metanol, etanol, acetil e´ter y agua) de hojas y frutos de myrtus (Myrtus communis). El contenido de compuestos feno´licos totales se determino´mediante el me´todo de Folin-Ciocalteau, el contenido de flavonoides mediante un me´todo colorime´trico usando como flavonoide esta´ndar la rutina, mientras que la actividad antioxidante se determino´midiendo la capacidad de los extractos para captar el radical ABTS þ . Los resultados mostraron una significante actividad antioxidante de los extractos metano´licos y acuosos, siendo la intensidad de dicha actividad antioxidante en el siguiente orden: metanol 4 agua 4 etanol 4 acetil e´ter, tanto en el caso de los extractos procedentes de hojas como de frutos. Para todos los extractos, los procedentes de las hojas de myrtus presentaron mayor actividad antioxidante y mayor contenido en polifenoles totales y en flavonoides que los correspondientes extractos de frutos. El contenido total de compuestos feno´licos totales presento´una alta correlacio´n (r 2 ¼ 0,9452) con la actividad antioxidante.

show abstract

Antioxidant activities of natural phenolic compounds from Acacia confusa bark

Cited by 126 publications

References 20 publications

Antioxidant and antimicrobial activities of essential oil and extracts of fennel (Foeniculum vulgare Mill.) seeds from Pakistan

Antioxidant and antimicrobial activities of essential oil and extracts of fennel (Foeniculum vulgare Mill.) seeds from Pakistan

Comparative studies on antioxidant activities of extracts and fractions from the leaves and stem of Epimedium koreanum Nakai

Antioxidant activity and total phenolic compounds of myrtle extracts Actividad antioxidante y contenido de compuestos fenólicos totales en extractos de myrtus

Contact Info

Product

Resources

About