Antioxidative compounds from Quercus salicina Blume Stem

Kim, Jung-il; Kim, Ho-Hyun; Kim, Sungun; Lee, Kyoungtae; Ham, In-Hye; Whang, Wan Kyunn

doi:10.1007/s12272-001-1152-2

Cited by 23 publications

(20 citation statements)

References 23 publications

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“…Q. petraea and Q. robur are also rich source of flavonoids and proanthocyanidins which are found in all plant organs, especially in leaves. Flavonoid content found in leaves of Q. petraea and Q. robur is in range of that found in Quercus salicina Blume [39]. According to Salminen et al (2004) hydrolysable tannins were the dominant phenolic group in leaves of all ages of Q. robur which is in well agreement with our results.…”

Section: Resultssupporting

confidence: 91%

Antioxidant Characterization of Oak Extracts Combining Spectrophotometric Assays and Chemometrics

Popović

Štajner

Ždero

et al. 2013

The Scientific World Journal

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Antioxidant characteristics of leaves, twigs, and acorns from two Serbian oak species Quercus robur L. and Quercus petraea L. from Vojvodina province (northern Serbia) were investigated. 80% ethanol (in water) extracts were used for antiradical power (ARP) determinations against DPPH•, •NO, and O2 •− radicals, ferric reducing antioxidant power (FRAP), total phenol, tannin, flavonoid, and proanthocyanidin contents. Permanganate reducing antioxidant capacity (PRAC) was determined using water extracts. Beside, mentioned parameters, soluble proteins, lipid peroxidation (LP), pigments and proline contents were also determined. The data of different procedures were compared and analyzed by multivariate techniques (correlation matrix calculation and principal component analysis (PCA)). PCA found that investigated organs of two different oak tree species possess similar antioxidant characteristics. The superior antioxidant characteristics showed oak leaves over twigs and acorns and seem to be promising source of antioxidants with possible use in industry and pharmacy.

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Section: Resultssupporting

confidence: 91%

Antioxidant Characterization of Oak Extracts Combining Spectrophotometric Assays and Chemometrics

Popović

Štajner

Ždero

et al. 2013

The Scientific World Journal

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“…In previous reports, several phenolic acids were identified in other Quercus species such as chlorogenic, cinnamic, gallic, gentisic acids and (+) catechin [47]; gallic, protocatechuic, ellagic acids and esculetin were the major compounds in corks of Q. super [29] or quercetin in stems of Q. salicina [16]. Ellagic acid also was identified as the major constituent of Q. suber from Spain and Portugal [35].…”

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confidence: 91%

Antioxidant Capacity and Phenolic Contents of Three <i>Quercus</i> Species

Tuyen

Khang

et al. 2016

ILNS

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ABSTRACT. The antioxidant capability and phenolic contents of ethanol extracts (free phenolics) and ethyl acetate extracts (bound phenolics) of three Quercus species were estimated in this work. The antioxidant activities were examined by 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) free radical, reducing power and -carotene bleaching methods. HPLC was employed to detect major phenolic acids. The leaf extract of Q. salicina contained maximum total phenolics while the highest total flavonoid content was found in the leaf extract of Q. serrata. The antioxidant activities varied among three species. Bark extract of Q. salicina was the most potential and it was closed to levels of the standard antioxidative dibutyl hydroxytoluene (BHT). The bark extract of Q. serrata also showed promising antioxidant activities despite their eminence was negligibly lower than Q. salicina. Stronger antioxidant activities of free phenolics than those of the bound phenolics may be attributed to higher quantities of free phenolics in the barks of Quercus species, however total flavonoids may not contribute a critical role. By HPLC analysis, thirteen phenolic acids were detected in the leaf and bark extracts. Of them, Q. salicina showed maximum in number (ten compounds) and quantities of detected phenolic acids. Ellagic, chlorogenic and benzoic acids were dominant in Quercus species. Findings of this study revealed that leaves and barks of three Quercus species are rich source of antioxidants, and Q. salicina is the most promising and should be elaborated to exploit its pharmaceutical properties.

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“…It has exhibited anti-inflammatory, antiedemic, diuretic and litholytic activities and has been used to treat diarrhea, dysentery, dermatitis and hemorrhagia in Korean folk medicine (7–9). …”

Section: Introductionmentioning

confidence: 99%

Protective effects of Quercus salicina on alloxan-induced oxidative stress in HIT-T15 pancreatic β cells

Song

Wang

2013

Experimental and Therapeutic Medicine

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The present study was designed to investigate the protective effect of hot water extracts from Quercus salicina leaves (QSWE) on alloxan-induced oxidative stress in HIT-T15 Syrian hamster pancreatic insulinoma cells. The HIT-T15 cells were treated with alloxan (1 mM) for 1 h and then co-incubated with the QSWE for 24 h. Alloxan significantly decreased the viability of the HIT-T15 cells (P<0.05). QSWE did not exhibit significantly cytotoxic effects and increased the viability of the HIT-T15 cells in a concentration-dependent manner. To further investigate the protective effects of QSWE on alloxan-induced oxidative stress in HIT-T15 cells, the cellular levels of reactive oxygen species (ROS), lipid peroxidation and endogenous antioxidant enzymes, including catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GSH-px), were analyzed. QSWE decreased the intracellular levels of ROS and lipid peroxidation and increased the activity of antioxidant enzymes. These results suggest that QSWE exerted cytoprotective activity against alloxan-induced oxidative stress in HIT-T15 cells through the inhibition of lipid peroxidation, reduction of ROS levels and stimulation of antioxidant enzyme activity. In addition, QSWE also increased the insulin secretion activity of the alloxan-treated HIT-T15 cells.

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Antioxidative compounds from Quercus salicina Blume Stem

Cited by 23 publications

References 23 publications

Antioxidant Characterization of Oak Extracts Combining Spectrophotometric Assays and Chemometrics

Antioxidant Characterization of Oak Extracts Combining Spectrophotometric Assays and Chemometrics

Antioxidant Capacity and Phenolic Contents of Three <i>Quercus</i> Species

Protective effects of Quercus salicina on alloxan-induced oxidative stress in HIT-T15 pancreatic β cells

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