• Journal of Nutrition and Health
• /
• 제36권9호
• /
• pp.889-897
• /
• 2003

This study was carried out to determine the effect of dietary ${\gamma}$-linolenic acid on decreasing the plasma lipid levels and the thrombotic activity in rats. Sprague-Dawley male rats (B.W 120 g) were fed a experimental diet containing 5% lard (46.05% saturated fatty acids) , corn oil (51.36% linoleic acid) , evening primrose oil (EPO,72.80% linoleic acid and 9.16% ${\gamma}$-linolenic acid) or borage oil (BO,40.29% linoleic acid and 24.25% ${\gamma}$-liolenic acid) for 30 days. Although there were no significant differences in the food intake among the groups, the body weight gain of the BO group was significantly lower than that of the other groups. The bleeding time of the BO group was significantly longer than that of the other groups. There were significantly differences in the whole blood clotting time among the groups except for the EPO and corn oil groups, where the whole blood clotting time of the BO group was the highest among the groups, and that of the lard group was the lowest. The plasma triacyglyceride (TAG) , total cholesterol (TC) and low density lipoprotein cholesterol (LDL-C) concentrations were the lowest in the BO group, but highest in the lard group, and there were significant differences among the groups. The plasma HDL-C concentrations were in the following order: BO, EPO, corn oil and lard groups and there were significant differences among the groups. The excretions of fecal neutial steroids and acidic steroids of the BO group were the highest among the groups, and there were significant differences compared to the other groups. The results suggest that dietary EPO and BO containing ${\gamma}$-linolenic acid has an antithrombotic activity, and inhibits the increasing of plasma TAG, TC and LDL-C concentrations compared to lard, which contains saturated fatty acids, or corn oil, which contains linoleic acid.

• Journal of Applied Biological Chemistry
• /
• 제42권2호
• /
• pp.75-80
• /
• 1999

The effects of dietary n-3 fatty acids, ${\alpha}$-linolenic acid (18:3), eicosapentaenoic acid (EPA, 20:5), and docosahexaenoic acid (DHA, 22:6), on brain phospholipid content and fatty acid composition were compared in rats fed with a diet containing constant ratios of saturated fatty acid/monounsaturated fatty acid/polyunsaturated fatty acid (PUFA) and n-3/n-6. The dietary fat in each diet was added at the level of 10%. In each diet, n-3 PUFA comprised two-thirds of the PUFA and the remaining one-third was linoleic acid (18:2). Dietary fat containing linoleic acid as the sole source of PUFA was also given to the control group. The content of brain phospholipid in the three n-3 PUFA groups was significantly lower than that of the linoleic acid group. This reduction was greater in the EPA and DHA groups than in the ${\alpha}$-linolenic acid group. The decrease in phospholipid content in rats fed n-3 fatty acid-rich diets was largely due to the decrease in the phosphatidylethanolamine fraction. Each dietary n-3 PUFA was found to affect the fatty acid composition of brain phospholipids; the most pronounced alteration was observed in phosphatidylethanolamine fraction. Furthermore, the proportion of DHA in the phosphatidylethanolamine fraction tended to be higher in the DHA group than in other PUFA groups. In conclusion, dietary ${\alpha}$-linolenic acid, EPA and DHA can influence the phospholipid content, phospholipid subclass, and fatty acid composition in rat brain.

• 한국작물학회지
• /
• 제47권3호
• /
• pp.240-243
• /
• 2002

서남해안 부근의 섬에서 재배되고 있는 재래종 검정콩 유전자원 45품종(135점)의 조단백, 지방산 조성을 분석한 결과 조단백 함량 변이는 34.70-44.20%(평균 40.75%),지방산 조성 변이는 palmitic acid에서 9.00-14.40%(평균 11.41%) stearic acid에서 2.90-5.00%(평균 3.93%), oleic acid에서 22.25-26.50%(평균 22.75%), linoleic acid에서 50.30-57.20% (평균 53.55%), linolenic acid에서 6.70-11.20%(평균 8.35%)의 변이를 보였다. 지방산에 대한 유전력은 oleic acid에서는 높았으나 stearic acid와 linolenic acid에서는 낮았으며 palmitic acid, linoleic acid는 조단백의 유전력과 같은 경향으로 중정도 이었다. 형질상호간의 상관 계수에서 조단백은 oleic acid와는 고도의 유의차로 정의 상관을, linoleic acid와는 고도의 유의 차로 부의 상관을 보였고 기타의 지방산간에는 부의 상관을 보였다.

• 대한화학회지
• /
• 제30권4호
• /
• pp.403-405
• /
• 1986

• 한국약용작물학회지
• /
• 제3권2호
• /
• pp.107-110
• /
• 1995

우리나라에서 생산되고 있는 60여종의 약용식물의 지방산 조성을 조사하여 식물체의 부위 와 종류에 따른 지방산 조성의 특성을 관찰한 결과 아래와 같은 결과얻었다. 1. 달맞이꽃종자, 컴프리잎, 지치뿌리에서 각각 총지방산함량의 9.1, 3,5, 7,2%의 GLA가 검출되었으며 달맞이 꽃종자가 컴프리잎이나 지치뿌리보다 GLA의 절대량이 많았다. 2. 들깨종자, 참깨종자, 호박종자등의 지방산이 양(量)과 불포화도면에서 좋은 자원임이 확인되었다. 3. 식물체의 잎, 줄기, 뿌리에서의 지방산조성은 종자의 경우에 비하여 18 : 3의 분포 비율이 현저히 높게 나타났으며 18 : 0의 비율은 비교적 같게 나타났다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제11권1호
• /
• pp.60-64
• /
• 1998

The different developmental stage embryos and oviductal and uterine fluids of rabbit were analyzed by gas chromatography. Myristic (C 14:0), palmitic (C 16:0), palmitoleic (C 16:1), stearic (C 18:0), oleic (C 18:1), linoleic (C 18:2), linolenic (C 18:3), arachidic (C 20:0), arachidonic (C 20:4), docosahexaenoic (C 22:6) and lignoceric (C 24:0) acids were the common fatty acid constituents with little exception. In most of the samples palmitic, oleic, linoleic and arachidonic acids were observed in high concentration. Moreover, linoleic, linolenic and arachidonic acids were the three poly-unsaturated fatty acids in both type sample except day-1 oviductal fluids. Similarly, in both day-1 and day-2 oviductal and uterine fluids myristic, palmitoleic, stearic, linolenic, arachidic and docosahexaenoic acids were in less composition or undetected.

• 한국식품조리과학회지
• /
• 제5권2호
• /
• pp.27-34
• /
• 1989

In the present study, the oxidative stability of Korean evening primrose oil (EPO) stored in various conditions, i.e., dark, cool, fluorescent light and daylight irradiation were investigated. Furthermore difference between the compositional content of gamma-linolenic acid (GLA) of EPO and that of alpha-linolenic acid of soybean oil (SOY) undergoing various modes of oxidation was observed. The results of the present study were as follows: More rapid autoxidative reations of EPO than that of SOY in vairous conditions increased in order of daylight, fluorescent light, cool and dark. Espectially, autoxidative rates of EPO increased rapidly on exposure to daylight and fluorescent light. This probably was due to chlorophyll functioned as a photosensitizer resulting in rapid oxidation of the EPO during irrdadiation of light. However, there was no difference between compositional content of GLA in EPO and alpha-linolenic acid in SOY undergoing various modes of oxidation. Therefore, theripid oxidative rate of EPO could be due to the catalytic effect of the chlorophyll on the photoxidation and the free radical reaction of PUFA.

• 한국생물공학회:학술대회논문집
• /
• 한국생물공학회 2005년도 생물공학의 동향(XVI)
• /
• pp.309-310
• /
• 2005

Bioconverted linolenic acid (bLNA) obtained from linolenic acid by Pseudomonas aeruginosa PR3, showed anti-fungal activity against plant pathogens such as B. cinerea, F. oxysporum, F. solani, P. capsici and C. capsici. The oil sample also showed anti-fungal activity with MIC values, ranging from >250 to >1,000 ${\mu}g/ml$. Varied concentrations of bLNA had a great potential effect on spore germination of different fungi.

• 한국식품영양과학회지
• /
• 제19권6호
• /
• pp.636-640
• /
• 1990

For a studyon the production of ${\gamma}$-linolenic acid(GLA) by fungi 3 fungal strains were isolated from soil. Their cell growth lipid content and fatty acid composition were compared in shake flask culture. Among these fungi the fungus designated as FA-007 has high lipid content(21.1%) and GLA content(15.6% of total fatty acids) The fungal strain FA-007 was tentatively identified as Mucor sp. on the basis of morphological characteristics, Fungal oil produced by this fungus was composed of 75.2% neutral lipid 5.3% glycolipid and 19.5% phospholipid. Although the GLA content in phospholipid was higher than it in neutral lipid the GLA content in neurtal lipid was high as 15.5%.

• 약학회지
• /
• 제44권1호
• /
• pp.60-65
• /
• 2000

The yeast extract, coconut water, safflower seed oil, arachidonic acid, linolenic acid, jasmonic acid and methyl jasmonate were added to Gamborg's B$_{5}$ medium. The changes on productivity of baccatin III were estimated every 30 minutes and the results were compared using the selected high yielding cell culture system of Taxus cuspidata. In most cases, the peaks of baccatin III productivity occured at 90~120 min after addition of elicitors. Among the compound elicitors, safflower seed oil showed the highest productivity of baccatin III. Also arachidonic acid and linolenic acid increased the baccatin III production.