• The Korean Journal of Food And Nutrition
• /
• v.28 no.2
• /
• pp.320-327
• /
• 2015

Since Korean ancient times, powder of Rosa rugosa Thunberg has been used as a folk remedy. This study was conducted to verify the effects of Rosa rugosa Thunberg powder on in vitro antioxidant properties and serum lipid levels of high-fat diet-induced mice from a nutritional viewpoint. In the case of Rosa rugosa Thunberg powders, measurement of TPC, ABTS radical scavenging activity of trolox, DPPH radical scavenging activity, and measured value of FRAP were higher in ethanol extract than water extracts. For LDL-cholesterol concentration, mice fed 10% powder of Rosa rugosa Thunberg with high-fat diets showed a high numerical value compared with other groups (p<0.05). When testing for triglyceride concentrations in blood, mice fed 10% and 20% powder of Rosa rugosa Thunberg with high-fat diets showed the lowest numerical values (p<0.05). When testing for blood insulin concentrations, the high-fat diet group showed higher levels than compared to the control group (p<0.05). When testing for blood leptin concentrations, the high-fat diet group was $5.88{\pm}3.53ng/dL$, whereas mice fed 10% powder of Rosa rugosa Thunberg with high-fat diets showed a blood leptin level of $10.36{\pm}5.96ng/dL$ (p<0.05). Therefore, results prove that powder of Rosa rugosa Thunberg reduces triglyceride concentrations in the blood, and could be used as an excellent natural antioxidant in the future.

• 한국생물공학회:학술대회논문집
• /
• 2003.04a
• /
• pp.673-675
• /
• 2003

The antioxidant activities of methanol and dichloromethane extracts of eighteen salt marsh plants were tested by using 1,1-Diphenyl-2-picryl-hydrazyl(DPPH) at a $100{\mu}g/ml$ concentrations. The methanol extracts of four salt marsh plants(Rosa rugosa Thunberg, Erigeron annuus, Ixeris tamagawaensis kitamura, Artemisia capillaris Thunberg) were found to be most effective in DPPH radical scavenging activity. The DPPH radical scavenging effect of these plants was Artemisia capillaris Thunberg(88.67%), Rosa rugosa Thunberg(87.51%), Erigeron annuus(78.49%), Ixeris tamagawaensis kitamura(69.99%) in order and was comparable with that of natural antioxidant, L-ascorbic acid(96.64%). The next effective ones were the methanol extracts of Teragonia tetragonoides(58.66%) and the dichloromethane extracts of Artemisia capillaris Thunberg(54.67%) and the others did not show a considerable activity. These salt marsh plants were evaluated using the pyrogallol UV-VIS spectrophotometeric method to generate superoxide anion. Among them, the dichloromethane extracts of four salt marsh plants and the methanol extracts of fifteen ones were weak superoxide dismutase-like activities.

• Preventive Nutrition and Food Science
• /
• v.9 no.2
• /
• pp.167-173
• /
• 2004

The aim of this study was to investigate the antioxidant effect of medicinal plants used by diabetic patients. Fourteen medicinal plants were selected and antioxidant activity such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, inhibition effect of linoleic acid autoxidation and low density lipoprotein (LDL) oxidation, thiobarbituric acid (TBA) value were measured. The Cornus officinalis had DPPH radical scavenging activity of 84.79%, which was higher than the 78.79% for $\alpha$-tocopherol. Rosa rugosa Thunberg, Pueraria thundergiana Bentham, Artemisia princeps var. orientalis and Sasamorpha purpurascens Nakai also had high values. Extracts with higher DPPH radical scavenging activities had higher total phenol concentrations, and positive correlations between these parameters were found. Inhibitory activities of linoleic acid autoxidation, LDL oxidation and TBA value, used as indices of oxidative stress, were observed in most of the selected medicinal plants. The highest inhibitory activity for TBA value was observed in the extract of Pueraria thundergiana Bentham. Rosa rugosa Thunberg (75.50 %), Sasamorpha purpurascens Nakai (74.00 %), and Cornus officinalis (73.00 %) all had high antioxidant activity against linoleic acid autoxidation, similar to that of $\alpha$-tocopherol. The same 3 plants also had high in inhibitory activity against LDL oxidation. Therefore, we demonstrated that medicinal plants used as folk remedy by diabetic patients had antioxidant activity. Especially, Rosa rugosa Thunberg, Cornus officinalis, Pueraria thundergiana Bentham, Arlemisia princeps var. orientalis, and Sasamorpha purpurascens Nakai had high phenol concentrations which resulted in high values for DPPH radical scavenging. These same plants exhibited high values for inhibitory activities for TBA value, linoleic acid autoxidation and LDL oxidation, indices associated with lipid peroxidation.

• Journal of Plant Biology
• /
• v.1 no.2
• /
• pp.7-15
• /
• 1958

1. The author investigated on the flora of Yongzong island especially on the point of view of the sociological studies. 2. The author could distinguish kinds of the plant formtion in this island(1). Seaside plant formation (2). Mountain plant formation. 3. The seaside plant formation could be subdivided as follows: (1). Association of Triglochin maritimum LINNE. (2). Association of Suaeda japonica MAKINO. (3). Association of Scirpus triqueter LINNE. (4) Association of Phragmites prosturatus MAKINO. (5). Association of Zoysia japonica STEUDEL. (6). Association of Zoysia sinica HANCE var. tenuis NAKAI ex YAMAMOTO. (7). Assocation of Carex pumila THUNBERG. (8). Association of Rosa rugosa THUNBERG. (9). Association of Pinus Thunbergii PARLATORE. (1), (2), (3), (4), (5) associations can grow under the high tide, so when the high tide comes they soaked in the sea water. 4. The mountain plant formation can be subdivided as follows: (1). Association of Quercus aliena BLUME and Platycarya strobilacea STEBOLD & ZUCCARINI. (2). Association of Quercus acutissima CARRUTHERS and Platycaryastrobilacea SIEBOLD & ZUCCARINI. (3). Association of Robinia Pseudoeacia LINNE and Platycarya strobilacea SIEBOLD & ZUCCARINI. 5. The plants at the abandoned mine regions are replacing by the association of Robinia Pseudacacia LINNE and Platycarya strobilacea SIEBOLD & ZUCCARINI. 6. Generally I can find that soil which is developed by the seaside plant formation under sea water (when high tide comes, they soaked in the sea water) is over the pH 8.0, so it shows strong alkaline. But the sandy soil behind the tide line shows near the neutral in spite of the same seaside plant formation. In the case of mountain plant formation the soil where they developed show near the pH 6.0, so it is acidity.