• Journal of Pharmaceutical Investigation
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• v.6 no.2
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• pp.101-110
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• 1976

1. In the rabbit and the dog, the blood pressure response to water extract and methanol extract obtained from Atractylodes rhizoma alb'a was investigated. 2. Water extract and methanol extract, when administered into the rabbit and the dog by the route of vein, produced fall of the blood pressure. 3. The depressor response of the rabbit to water extract and methanol extract was not affected by $Avicel{\circledR}$, propranolol and atropine. 4. The depressor response by water extract and methanol extract in the rabbit was not affected by guanethidine, but water extract and methanol extract produced elevation of blood pressure in this rabbit. 5. Pretreatment of rabbit with chlorisendamine or phenoxybenzamine weakened the depressor response to water extract and methanol extract, and the both extracts produced secondary elevation of blood pressure in this rabbit. 6. The pressor response of the chlorisondamine-treated rabbit to water extract and methanol extract was not affected by atropine. 7. Water extract decreased the pressor action of tyramine and depressor action of pilocarpine and isoproterenol, but did not affect the blood pressure response of nor einephrine, angiotensin and dimethylpehnyl piperazinium iodide(DMPP).

• YAKHAK HOEJI
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• v.20 no.1
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• pp.97-106
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• 1976

The actions of Atractylodes rhizoma alba on renal function of dog were investigated with water and methanol extract of it, utilizing clearance technique. Water extract elicited diuresis while methanol extract induced antidiuresis in the dog when they were given intravenously. The diuresis induced by the intravenous water extract seemed to be closely related to the decrement of reabsorption of electrolytes in renal tubules. On the contrary, the antidiuresis by intravenous methanol extract appeared to be related to the increment of renal reabsorption of sodium. Water and methanol extract, when infused into a renal artery, exhibited identical resposes to the intravenous actions confined only to the infused kidney, inferring that renal actions of water and methanol extract are not mediated by any endognous humoral extract are not mediated by any endogenous humoral agents. From these observations it is concluded that diuretic action of water extract and antidiuretic action of methanol extract were brought about by direct action in the renal tubules.

• Korean Journal of Pharmacognosy
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• v.39 no.3
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• pp.255-259
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• 2008

This study was investigated antioxidant and anticancer activity of water, methanol extract from upper and root part of Taraxacum mongolicum H. Total phenolic compound contents of methanol and water extracts from upper part were $51.95{\pm}0.18$ mg/g and $48.16{\pm}0.89$ mg/g respectively, and total flavonoid compound contents were estimated as $20.57{\pm}1.12$ mg/g in methanol extract and $6.55{\pm}1.20$ mg/g in water extract. $EC_{50}$ values for DPPH radical scavenging activity of methanol and water extract from upper part were $138.47{\pm}3.78{\mu}g/mL$ and $204.38{\pm}5.32{\mu}g/mL$, and methanol and water extracts from root part were as $512{\pm}8.11{\mu}g/mL$ in methanol extract and $1315.05{\pm}11.98{\mu}g/mL$ in water extract. Reducing power and hydroxyl radical $({\bullet}OH)$ scavenging activity estimated that methanol extract of each part were higher than water extracts. The cell viability showed that the methanol extract from upper part had a cytotoxicity in the growth of colon carcinoma cell (44.58%). Both water extract $(51.97{\pm}11.43%)$ from upper part and methanol $(53.46{\pm}19.77%)$, water $(52.79{\pm}13.53%)$ extracts from root part had quite higher cytotoxicity than that of methanol extract $(88.25{\pm}2.02%)$ from upper part. Based on the results, It was suggested that the methanol extract of Taraxacum mongolicum H. were potential materials for use as functional food and medicine.

• The Korean Journal of Food And Nutrition
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• v.30 no.1
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• pp.51-58
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• 2017

Antioxidant activities of 80% methanol, water, and 70% ethanol extracts of Lentinula edodes GNA01 were compared and estimated. The yield of Lentinula edodes GNA01 was identified to be in the following order: water>70% ethanol>80% methanol, but there was no significant difference between 80% methanol and 70% ethanol extracts. The highest total phenolic content (TPC) and total flavonoid content (TFC) were found in water extract, and TPC of 80% methanol extract was higher than that of 70% ethanol extract and TFC of 70% ethanol extract was higher than that of 80% methanol extract. Water extract exhibited the strongest DPPH, ABTS radicals, and nitrite scavenging activities, $Fe^{2+}$ chelating ability, and FRAP among the three extracts. In addition, antioxidant activity of 80% methanol extract was higher than that of 70% ethanol extract in most of the experiments. As a result, antioxidant activity of Lentinula edodes GNA01 showed a difference according to extraction solvent and concentration; nevertheless, water extract exhibiting high polarity had the strongest antioxidant effect. Consequently, water extract from Lentinula edodes GNA01 is anticipated to be useful for the development of a high value-added functional product.

• Journal of Applied Biological Chemistry
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• v.51 no.4
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• pp.160-164
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• 2008

Potential antioxidant activities of methanol and water extracts of Cirsium japonicum var. ussuriense (CJ) leaves were examined. The reducing power and hydroxyl raical-scavenging activity assays showed that the methanol extract had a significantly higher activity than the water extract. In addition, the methanol extract showed a concentration-dependent reducing power, ranging from 0.228 to 1.072($0.1{\sim}0.5\;mg/mL$), as well as a high DPPH free radical-scavenging activity($EC_{50}=40.25\;{\mu}/mL$). The total phenolic(as tannic acid) and flavonoid(as quercetin) contents of the extract were 62.41 mg/g and 13.48 mg/g, respectively. The cytotoxic activity indicated that the methanol extract has an inhibition activity in the stomach carcinoma cell (35.40%), suggesting that the methanol extract of CJ leaves could be used as a potential source of pharmaceutical material.

• Korean Journal of Human Ecology
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• v.22 no.6
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• pp.687-699
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• 2013

This study was carried out to investigate the antifungal activity and house dust mite repellent effect of cotton and silk fabrics dyed with Juniperus chinensis heartwood extracts by hot-water and methanol. The chemical composition of Juniperus chinensis heartwood extracts by hot-water and methanol was analyzed by GC-MS. In the case of antifungal activity, dyed fabrics with hot water extract had no effect against chaetomium globosum fungus. But showing no growth in fabrics dyed with methanol extract, dyed fabrics with methanol extract showed very excellent antifungal activity. Silk fabric dyed with methanol extract showed excellent house dust mite repellent effect of 94.3%~96.0% against dermatophagodes farinae. The composition of Juniperus chinensis heartwood extracts from hot-water and methanol was different. There were no terpene and its analogue peaks in hot-water extract. However there were terpene and its analogue peaks in methanol extract. From these GC-MS results, terpene was identified in methanol extract of Juniperus chinensis heartwood. Efficient ingredient of antifungal activity and house dust mite repellent effect was assumed terpene.

• Journal of the Korean Society of Food Culture
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• v.32 no.6
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• pp.583-588
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• 2017

This study examined the antioxidant and neuronal cell protective effects of the water and methanol extracts of Eugenia caryophyllata Thunb. The total polyphenol content was significantly higher in the methanol extract than in the water extract. The DPPH radical scavenging activity in the water extract was similar to Vit. C at a concentration of $100{\sim}200{\mu}g/mL$. The ABTS radical scavenging activity in the water and methanol extract was similar to Vit. C at a concentration of $800{\sim}1,000{\mu}g/mL$. The superoxide dismutase (SOD)-like activity in the methanol extract was similar to Vit. C at a concentration of $800{\sim}1,000{\mu}g/mL$. The DPPH, ABTS radical scavenging and (SOD)-like activity increased with increasing extract concentration. In a cell viability using MTT, the water extract (50 and 100 ppm) and methanol extract (100 ppm) had a protective effect against $H_2O_2$-induced neurotoxicity.The result ssuggest that the extract of E. caryophyllata Thunb. has antioxidant activities and may be useful for treating neurodegenerative disorders.

• Korean journal of food and cookery science
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• v.20 no.1
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• pp.81-85
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• 2004

This study was conducted to investigate the antioxidant activities of clove extracts in water, methanol and ether. The clove extracts, BHA and ${\alpha}$-tocopherol were added to each oil at a level of 200 ppm. The activities of the substrate oils and controls were tested under autoxidation and thermal oxidation conditions. The degree of the effects of the antioxidant activities under autoxidation condition were in the following order; ether extract 〉 methanol extract 〉BHA 〉 ${\alpha}$-tocopherol 〉 water extract = control group. The induction periods of the control, water, methanol and ether extracts, and BHA and ${\alpha}$-tocopherol were 9.5, 9.6, 10.7 11.8, 10.4 and 9.7 days, respectively. Under thermal oxidation condition, the methanol extract showed stronger antioxidant activity than those of the water and ether extracts. The antioxidant activity of the methanol extract was attributed to ${\alpha}$-tocopherol and BHA.

• Journal of the East Asian Society of Dietary Life
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• v.22 no.3
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• pp.392-400
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• 2012

The purpose of this study was to analyze the physiological activity and antibiosis of mulberry powder by extract method. The total phenol content of mulberry powder extracted with methanol was 82.9 mg/g, while that of powder extracted with water was 46.9 mg/g. Extractions with methanol were therefore more effective than with water. The total flavonoid contents of mulberry powder extracted with methanol was 13.0 mg/g, while that of powder extracted with water was 9.4 mg/g. Also, the nitrite-scavenging ability of mulberry powder was lower than ascorbic acid and BHT. The SOD-like activity of mulberry powder extracts, natural antioxidant, and artificial antioxidant at 5 mg/mL arranged in order of decreasing concentration were ascorbic acid (98.3%) > BHT (88.1%) > water extract (9.8%) > methanol extract (3.0%). And, the OH radical scavenging activities of mulberry powder extracts and natural antioxidant at 5 mg/mL in order of decreasing concentration was ascorbic acid (97.0%) > methanol extract (46.2%) > water extract (35.8%). The antimicrobial effects of mulberry powder extracted with methanol could be detected on Bacillus cereus ($10,000{\mu}g/disc$) and Staphylococcus aureus ($10,000{\mu}g/disc$).

• The Journal of Korean Medicine
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• v.17 no.2 s.32
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• pp.161-167
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• 1996

For the purpose of developing a new drug against cerebral infarction, we chose Ijintang which is frequently applied in the field of Jung Pung of traditional medicine. From this formula, water extract and methanol extract were prepared respectively. Animals were divided into three groups; control group, water extract medicated group, methanol extract treated group. water extract was given 195mg／kg orally and methanol extract, 165mg／kg for 2 weeks in case of cerebral edema and 1 month in regional cerebral blood flow. On the regional cerebral blood flow, the drug medicated groups showed no significant changes as compared gith control group. There was no significant difference on the cerebral edema among the groups. According to the results above, it is suggested that oral medication of water extract and methanol extract from Ijintang have no effect on the change of rCBF and edema after acutely induced cerebral infarction. However, it is thought that modification of administration method and development of new animal model for traditional medicine are needed.