نتایج جستجو برای: eckol

تعداد نتایج: 33  

Journal: :FEBS letters 2005
Kyoung Ah Kang Kyoung Hwa Lee Sungwook Chae Rui Zhang Myung Sun Jung Youngki Lee So Young Kim Hee Sun Kim Hong Gu Joo Jae Woo Park Young Min Ham Nam Ho Lee Jin Won Hyun

We have investigated the cytoprotective effect of eckol, which was isolated from Ecklonia cava, against oxidative stress induced cell damage in Chinese hamster lung fibroblast (V79-4) cells. Eckol was found to scavenge 1,1-diphenyl-2-picrylhydrazyl radical, hydrogen peroxide (H(2)O(2)), hydroxy radical, intracellular reactive oxygen species (ROS), and thus prevented lipid peroxidation. As a res...

Journal: :Molecules 2014
Young-Jin Jun Minsup Lee Taisun Shin Nayoung Yoon Ji-Hoe Kim Hyeung-Rak Kim

Eckol isolated from Ecklonia stolonifera was previously reported to exhibit cytoprotective activity with its intrinsic antioxidant activity in in vitro studies. In this study, we characterized the mechanism underlying the eckol-mediated the expression of heme oxygenase-1 (HO-1). Eckol suppressed the production of intracellular reactive oxygen species and increased glutathione level in HepG2 cel...

2013
Yohei Fujii Reiji Tanaka Hideo Miyake Yutaka Tamaru Mitsuyoshi Ueda Toshiyuki Shibata

The antioxidative properties of phlorotannins isolated from the brown alga Eisenia bicyclis were measured using the H-ORAC (Hydrophilic Oxygen Radical Absorbance Capacity) method. The ORAC values of phloroglucinol and it’s oligomers: eckol, fucofuroeckol A, phlorofucofuroeckol A, dieckol, 8,8’-bieckol, were 2.57 ± 0.14, 4.97 ± 0.36, 9.82 ± 0.70, 8.97 ± 0.89, 10.22 ± 0.85, 8.62 ± 0.92 μmol Trolo...

Journal: :South African Journal of Botany 2016

Journal: :Marine Drugs 2023

The use of functional foods and their bioactive components is receiving increasing attention as a complementary alternative therapy for chronic ulcerative colitis (UC). This study explored the protective effect mechanisms Eckol, seaweed-derived phlorotannin, on dextran sodium sulfate (DSS)-induced UC in mice. Eckol (0.5–1.0 mg/kg) reduced DSS-enhanced disease activity indexes, alleviated shorte...

Journal: :Chemical & pharmaceutical bulletin 2003
Hye Sook Kang Hae Young Chung Jee Hyung Jung Byeng Wha Son Jae Sue Choi

A new phlorotannin, named eckstolonol (1), was isolated from the EtOAc soluble fraction of the methanolic extract of the brown alga, Ecklonia stolonifera OKAMURA, along with three known phlorotannins, eckol (2), phlorofucofuroeckol A (3), and dieckol (4). The structure of eckstolonol was identified as 5,8,13,14-tetraoxa-pentaphene-1,3,6,9,11-pentaol on the basis of spectroscopic evidence. The n...

2014
Toshiyuki Shibata Taiko Miyasaki Hideo Miyake Reiji Tanaka Shigeo Kawaguchi

The influence of phlorotannins and bromophenols on the feeding behavior of marine herbivores was determined using bioassay of Turbo cornutus. It was found that phloroglucinol and its oligomers isolated from the brown alga Eisenia bicyclis (eckol, fucofuroeckol A, phlorofucofuroeckol A, dieckol, and 8,8’-bieckol) had a deterrent effect against feeding behavior of T. cornutus in the concentration...

Journal: :journal of the iranian chemical research 0
hanggara sudrajat ikatan mahasiswa eksakta indonesia, universitas gadjah mada, sleman, yogyakarta 55281, indonesia katherine ma school of chemistry, university of wollongong, wollongong nsw 2522, australia zaky al-fatony ikatan mahasiswa eksakta indonesia, universitas gadjah mada, sleman, yogyakarta 55281, indonesia

a new alkaloid (1) and two known compounds (2 and 3) were isolated from the blue-greenalga arthrospira platensis. their structures were determined on the basis of spectroscopic data.according to the obtained data and values in the literature, the compounds were concluded to beeckol.

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