• 생약학회지
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• 제25권4호통권99호
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• pp.342-347
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• 1994

Soybean and beanpaste have been used as ore of the important food in Korea. Beanpaste is made from soybean(seed of Glycine max $M_{ERRIL}$, Leguminosae) by traditional fermentation. It was expected that the secondary metabolites might be formed by the action of some microorganisms or enzymes on the constituents primarily contained in soybean during manufacturing or storage of beanpaste. A systematic investigation on the chemical constituents was carried out. As a result, sterol glycoside named daucosterin, lipo-daucosterin have been isolated from the lipid fraction soybean and their structures elucidated basis of chemical and physicochemical evidences. A ratio of composition of the lipid constituents in soybean and beanpaste were estimated.

• 약학회지
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• 제44권3호
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• pp.257-262
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• 2000

The roots of Cynanhum caudatum (Asclepiadaceae) have been used in folk medicine in Japan and China for the prevention and treatment of various geriatric diseases and also as a cardiotonic agent. Constituents of this plant have mainly been examined for glycosides: besides two steroidal alkaloids, gagaminine and gagamine which was firstly isolated by us, more than 35 polyoxypregnane glycosides and aglycones have also been identified. Gagaminine inhibits potently the hepatic aldehyde oxidase activity and lipid peroxidation in vitro. The present work deals with the comparison of antioxidative activities of gagamine, a new pregnane alkaloid, three isolated polyoxypregnanes containing a keto group at C-20 with those of gagaminine, a potent antioxidant, in order to explain the structure-activity relationships. The results of this study further prove that the cinnamoyl group of gagaminine is very important for the inhibition on the aldehyde oxidase activity while the nicotinoyl group is necessary for anti-lipid peroxidation. Besides that, the keto compounds having no ester group at C-12 were found to be more active than the others except gagaminine.

• 한국환경농학회지
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• 제11권3호
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• pp.261-268
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• 1992

식물 세포의 미토콘드리아와 엽록체는 광 증감제로 작용할 가능성이 있는 여러 가지 색소들을 함유하고 있다. 이들 색소들은 대부분이 막에 결합되어있으며 청색광 영역에서 강한 흡수대를 가지므로 청색광하에서 노출된 이들 소기관에서는 활성산소가 발생되어 막의 구조적, 기능적 피해를 유발하는 요인이 된다. 활성산소의 광발생에 따른 막구조의 변화는 일차적으로 막지질 지방산성분의 산화적 파괴에 기인할 것이다. 본 연구에서는 식물이 고광도의 가시광선(특히 청색광선)하에서 일어나는 막지질 지방산의 산화적 파괴에 지방산 대신 상대적으로 둔감한 포화 지방산의 조성비를 높일 것이라고 가정하고, 이를 뒷받침할만한 실험결과를 얻었다. 즉, 광질이 서로 다른 가시광선 처리조건하에서 생장중인 식물 및 그 소기관들을 대상으로 막지질의 과산화, 지방산조성 및 불포화도, 막결합 단백질의 활성 등을 측정하고 이를 제시하였다.

• Applied Biological Chemistry
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• 제26권1호
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• pp.19-27
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• 1983

은기(銀寄), 녹조(鹿鳥), 상피(霜被)의 3가지 밤 품종(品種)의 지질(脂質)성분으로 부터 분획한 중성지질, 당지질 및 인지질의 구성지질(脂質)과 구성지방산(脂肪酸)을 thin-layer chromatography 및 gas chromatography에 의하여 분리 정량하였다. 유리지질(遊離脂質) 중의 중성지질(中性脂質)로는 glyceride, free sterol, esterified sterol 주성분이었으나 결합지질(結合脂質)에는 triglyceride는 거의 없었고 free fatty acid와 monoglyceride가 소량 함유되어 있었다. 외과육(外果肉)의 유리지질(遊離脂質)에는 triglyceride가 25.7%로 훨씬 많았으나 결합지질에는 거의 함유되지 않은 것이 특이하였고 기타 성분은 미량 존재하였다. 유리지질(遊離脂質)중의 당지질(糖脂質)은 digalactosyl diglyceride, esterified steryl glycoside가 주성분이었으나 결합지질(結合脂質)은 digalactosyl diglyceride가 주성분이었다. trigalactosyl diglyceride가 유리지질에는 극히 적으나 결합지질에는 2.0% 함유되어 있다. 유리지질 중의 인지질(燐脂質)은 lysophosphatidyl choline, phosphatidyl inositol, phosphatidyl choline, phosphatidyl glycerol, phosphatidyl ethanolamine이 비교적 고른 분포를 보이고 있으며 결합지질(結合脂質) 중에는 phosphatidyl choline, phosphatidyl inositol이 주성분이었다. 중성지질(中性脂質)의 지방산조성(脂肪酸組成)은 linoleic acid가 유리지질과 결합지질에 각각 49.3%, 45.1%로 제일 많았고 linolenic acid, palmitic acid가 역시 주요 지방산(脂肪酸)이었다. 당지질(糖脂質)과 인지질(燐脂質)에 있어서도 그 경향(傾向)은 비슷하였으나 palmitic acid의 함량이 상대적으로 많아 포화지방산 함량이 중성지질보다 훨씬 많았으며 전체적으로 결합지질에 포화지방산 함량이 많았다.

• Natural Product Sciences
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• 제7권4호
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• pp.110-113
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• 2001

The lipid classes constituents; hydrocarbons, wax esters, sterol esters, triacylglycerols, free fatty acids, 1,3-diacylglycerols, 1,2-diacylglycerols, free sterols, 2-monoacylglycerols, 1-monoacylglycerols, phosphatidylethanolamines, phosphatidylcholines, lysophosphatidylethanolamines and phosphatidylinositols of Nicotiana tabacum L. seeds oil were investigated by thin layer and gas chromatography. Palmitic, oleic and linoleic acids were the major components in all lipid classes studied.

• Natural Product Sciences
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• 제20권1호
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• pp.22-28
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• 2014

A new natural product, tetrastigmol A (1), and several known compounds as flavonoids (2 - 8), steroids (9 - 10), bergenin and its derivative (11 - 12), stilbens (13 - 15), lignan (16), benzenecarboxylic derivative (17) and two norisoprenoid (18 - 19) were isolated from the stem of Tetrastigma erubescens Planch. (Vitateae). Their structures were determined on the basis of NMR spectroscopic data. This is the first report on chemical constituents of this plant. Compounds 1, 6 - 8 and 12 - 15 showed strong antioxidant activity using two methods including DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging and lipid peroxidation inhibitory assays.

• 동아시아식생활학회지
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• 제10권3호
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• pp.200-207
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• 2000

This study was conducted to investigate the nutritional constituents of pine pollen and the effects of pine pollen on rat liver. Using the chemical components analysis method, the constituents of pine pollen are crude protein(13.97%). crude lipid (6.50%), crude ash (3.25%). Detectable in pine pollen are main fatty acids and non-essential amino acids such as glutamic acid and aspartic acid such as oleic and linoleic acid and 18kinds of amino acid including essential amino acids. The effects of pine pollen on rat liver fed with a high fat diet for 6 weeks showed significant decrease in total lipid and triglyceride as compared with the group fed with a fat diet only. Total cholesterol content decreased by 20.33%. No significant difference was found in total protein content of each group. Pine pollen Is efficacious in preventing geriatric diseases (arteriosclerosis, hyper-lipidemia and cardiovascular system-related diseases).

• 대한약학회:학술대회논문집
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• 대한약학회 2000년도 춘계총회 및 학술대회
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• pp.185.2-185.2
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• 2000

• Archives of Pharmacal Research
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• 제28권7호
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• pp.775-783
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• 2005

The ethanol extract of the peony root (Paeonia Lactiflora Pall, Paeoniaceae) as well as its major active components including gallic acid and methyl gallate were evaluated for their protective effects against free radical generation and lipid peroxidation. In addition, the protective effects against hydrogen peroxide-induced oxidative DNA damage in a mammalian cell line were examined. The ethanol extracts of the peony root (PREs) and its active constituents, gallic acid and methyl gallate, exhibited a significant free radical scavenging effect against 1,1-diphenyl-2-picryl hydrazine (DPPH) radical generation and had an inhibitory effect on lipid peroxidation, as measured by the level of malondialdehyde (MDA) formation. The PREs did not have any pro-oxidant effect. They strongly inhibited the hydrogen peroxide-induced DNA damage from NIH/3T3 fibroblasts, as assessed by single cell gel electrophoresis. Furthermore, the oral administration of 50% PRE (50% ethanol extract of peony root), gallic acid and methyl gallate potently inhibited the formation of micronucleated reticulocytes (MNRET) in the mouse peripheral blood induced by a $KBrO_3$ treatment in vivo. Therefore, PREs containing gallic acid and methyl gallate may be a useful antigenotoxic antioxidant by scavenging free radicals, inhibiting lipid peroxidation and protecting against oxidative DNA damage without exhibiting any pro-oxidant effect.

• 생약학회지
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• 제26권4호
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• pp.377-384
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• 1995

We studied the effects of the methanolic extracts and fractions from leaves, fruits, stems and roots of Curadrania tricuspidata on the formation of lipid peroxide. The methanol extracts of leaves, fructus and stem of this plants decreased the formation of lipid peroxide in the isolated rat liver. The ethyl acetate fraction of leaves and n-butanol fraction of stems reduced the lipid peroxide formation. It showed that arthocarpesin, one of the constituents isolated from this plant, lowered the formation of lipic peroxide by 13%, 21%, 22% and 25% at the concentration of $10^{-8},\;10^{-6},\;10^{-4}\;and\;10^{-2}mg/ml$, respectively.