2008
DOI: 10.3746/jkfn.2008.37.8.979
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Isolation and Identification of Antioxidant Substances from the Stems of Butterbur (Petasites japonicus)

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Cited by 7 publications
(4 citation statements)
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“…1) was isolated from the ethanolic extract of Petasites japonicus stems in the previous study. 22 Quercetin (QC) was obtained from Sigma-Aldrich Co. (St. Louis, MO, USA) and used as a positive control. Optical density was measured using a microplate reader (BioTek Instruments, Winooski, VT, USA).…”
Section: Generalmentioning
confidence: 99%
See 1 more Smart Citation
“…1) was isolated from the ethanolic extract of Petasites japonicus stems in the previous study. 22 Quercetin (QC) was obtained from Sigma-Aldrich Co. (St. Louis, MO, USA) and used as a positive control. Optical density was measured using a microplate reader (BioTek Instruments, Winooski, VT, USA).…”
Section: Generalmentioning
confidence: 99%
“…Kaempferol (3,4 0 ,5,7-tetrahydroxyavone, KF), a avonol, has been isolated from a number of natural sources, including strawberries, 18 Ginkgo biloba leaves (EGb 761), 19 Pu-erh tea, 20 paprika, 21 and butterbur (Petasites japonicus). 22 This compound exerts a number of biological actions, including anti-inammatory, anticarcinogenic, anti-diabetic, and neuroprotective activities. For example, 100 mM KF attenuates the interleukin-1b (IL-1b)-induced proliferation of rheumatoid arthritis synovial broblasts as well as the production of cyclooxygenase-2 (COX-2), prostaglandin E2 (PGE2), and matrix metalloproteinases (MMPs).…”
Section: Introductionmentioning
confidence: 99%
“…( 24 ) In P. japonicus , petaslignolide A is purified a new furofuran lignan with antioxidant activity. ( 4 ) Kim et al ( 26 ) purified and isolated kaempferol as the active compounds of the stems of P. japonicus . The antioxidant activity of the active compound was examined by DPPH radical scavenging assay, thiobarbituric acid-reactive substance (TBARS) assay in the linoleic acid model system, and lipoxygenase inhibition assay.…”
Section: Antioxidant Compounds and In Vitro Antioxmentioning
confidence: 99%
“…The antioxidant activity of the active compound was examined by DPPH radical scavenging assay, thiobarbituric acid-reactive substance (TBARS) assay in the linoleic acid model system, and lipoxygenase inhibition assay. ( 26 ) Moreover, several compounds such as caffeoylquinic acids and its isomer, quercetin, kaempferol glycosides, and fukinolic acid in the leaves and roots were identified. Among them, 3,5-di- O -caffeoylquinic acid exhibited the greatest radical-scavenging capacity, as assessed using an HPLC system with post-column online antioxidant detection based on 2-2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS + ) radical-scavenging activity.…”
Section: Antioxidant Compounds and In Vitro Antioxmentioning
confidence: 99%