• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2001.12a
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• pp.125-125
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• 2001

Total lipid contents were 0.58∼3.00% in 9 kinds of brown algaes, 0.47∼2.16% in 5 kinds of red algaes and 0.55∼2.99% in 2 kind of green algeas, respectively. Fatty acid compositions of the algaes were determined by gas liquid chromatography. Total polyenes and n-3 polyenes of linoleic acid(18:3), stearidonic acid(18:4), eicosapentaenoic acid(20:5) and docosahexaenoic acid(22:6) were 3.88∼57.57% and 1.46∼25.67% in the brown algaes, 5.30∼39.75% and 1.17∼21.91% in the red algaes, and 7.76∼19.27% and 3.67%∼10.61% in the green algaes, respectirely. The fatty acid contents and compositions of total polyenes and n-3 polyenes were vary different in the algae groups and sepecies.

• Journal of Embryo Transfer
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• v.15 no.2
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• pp.137-145
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• 2000

To investigate fatty acid constituents and relative compositions in the fluid of the follicles, oviducts, uterine ho군 and uterine body in sows, the fluids of the reproductive tract were analyzed using Gas chromatography. The samples were taken from various reproductive tract of 21 sows slaughtered. 1. Caprylic acid(C8: 0), capric acid(C10:0), lauric acid(C12:0), myristic acid(C14:0), palmitic acid(C16:0), plamitolele acid(C16:1), stearic acid(C18:0), oleic acid(C18:1), linoleic acid(C18:2) and arachidonic acid(C20:4) were found in the reproductive tracts of the sows, which made 10 kinds of fatty acid intotal. 2. Two kinds of polyunsaturated fatty acids, linoleic acid and archidonic acid were found inthe reproductive tracts. 3. Palmitic acid among saturated fatty acids and oleic acid among unsaturated fatty acids were the hihgest level in all of the reproductive tracts. 4. Palmitic acid, oleic acid and stearic acid showed higher rate with 44.89%, 23.69% and 14.36%, respectively, and lauric acid, capric acid, palmitoleic acid, arachidonic acid ad myristic acid showed lower rate with 0.62%, 1.13%, 1.65%, 1.97% and 2.24%, respectively in the reproductive fluid. 5. The highest level of arachidonic acid was found in the uterine horn. 6. The sum of the palmitic acid and oleic acid were 66.91%, 70.41%, 66.14% and 73.36% in the fluid of follicle, oviduct, uterine horn and uterine body, respectively. 7. The relative composition of arachidonic acid was higher during the follicular stage than during the luteal phase in the fluid of oviduct and uterine. 8. The long chain fatty acids such as the palmitic acid, stearic acid, oleic acid and linoleic acid showed higher relative compositions during the follicular phase(93.18%∼96.83%) than during the luteal phase(82.56%∼88.37%). 9. Caprylic acid, luric acid and palmitoleic acid were undetected in the fluid of all of the reproductive tracts during the follicular phase. Low relative compositions of capric acid, myristic acid andarachidonic acid were found during the follicular phase, while the low relative compositions (<5%)of capric acid, lauric acid, myristic acid, plamitoleic acid and arachidonic acid were found during the luteal phase.

• Journal of the Korean Applied Science and Technology
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• v.11 no.1
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• pp.17-26
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• 1994

The present study was carried out in atheroscleorotic New Zealend white(NZW) rabbits. to evaluate the effect of dietary supplementation with Korean pinenut oil, on plasma total fatty acid composition. In study I, NZW rabbits were fed 10 weeks on a commercial chow diet supplemented with 5% of energy as fats(soybean oil or pinenut oil) or 10% of energy as fats(soybean oil or pinenut oil) with the addition of 1% cholesterol to the diet. Nineteen fatty acids ranged from myristic acid (14:0) to cervonic acid (22:6 ${\omega}3$) were identified in all the samples. The c5, c9, $c12{\sim}18$ : 3 acid was not reported in the fatty acid methyl ester profiles of each group because it was included in the linoleic acid peak. The major constitutent fatty acids in the chow diet group were linoleic acid, oleic acid, palmitic acid and ${\alpha}$-linolenic acid. In the cholesterol group, oleic acid, linoleic acid and palmitic acid were the major fatty acids. In plasma of cholesterol-fed animals, the levels of 16:1 ${\omega}$ 7 and 18:1 1 ${\omega}$ 9 were increased. Linoleic acid was the major fatty acid in soybean oil/cholesterol and pinenut oil/cholesterol groups. Plasma linoleic acid levels were significantly incresed from 4 to 6% by the supplementation of 5% soybean or 5% pinenut oil in the cholesterol diet for 5 weeks, compared to cholesterol group. Plasma 16 : 1 ${\omega}$ 7 levels in animals fed with 5 or 10% pinenut oils were significantly lower than in those fed cholesterol for 5 weeks. After 10 weeks on the soybean oil and pinenut oil diet there were no significant differences in the fatty acid composition. In study II, the fatty acid composition was not affected by the types or levels of oils supplemented for 5 weeks. After 10 weeks on the oil diets 16:1 ${\omega}$ 7 and 18:1 ${\omega}$ 9 were decreased in 10% soybean in oil/cholesterol and 10% pinenut oil/cholesterol groups, compared to cholesterol group.

• Journal of the Korean Society of Food Science and Nutrition
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• v.23 no.2
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• pp.303-307
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• 1994

This study was carried out to investigate lipid content, melting point, refractive index and fatty acid composition of commercial chocolate and imitation chocolate. Fifty-eight samples for test were 45 of domestics and 13 of foreign in Seoul. The results were as follows ; Mean value of lipid content was 35.1% in chocolate and 31.9% in imitation chocolate, and foreigns were lower than domestics. In melting point of lipid, chocolates and imitation chocolate were 26.4$^{\circ}C$ and 27.4$^{\circ}C$ as mean value, respectively. Mean value of refractive index of lipid was 1.4560, imitation chocolate of domestic were lower than another. The fatty acid compositions were chiefly consisted of {{{{C_18:1 , C_18 , C_16, C_16:1 and C_18:2. }} The ratio of SFA : MUFA : PUFA in chocolate and limitation chocolate were 8.2 :6.9 :1.0 and 3.1 : 4.3: 1.0 , respectively.

• Journal of Forest and Environmental Science
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• v.18 no.1
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• pp.87-96
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• 2001

In order to investigate the influence of increased seed production of Korean white pine(Pinus koraiensis S. et Z.), component of seeds, produced from trees in the thinned stand and the stem-pruned trees in the seed orchard, were analyzed. The results obtained were as follows: 1. General component analysis of seed There is no significant influence of thinning on the seed component in moisture content (thinned- 4.10%, unthinned- 3.74% ), ash (thinned- 2.95%, unthinned- 2.94%), crude lipid (thinned- 67.62%, unthinned- 71.94%), and crude protein (thinned- 17.27%, unthinned- 17.50%). There is no significant influence of stem-pruning on the seed component in moisture content (unpruned- 4.26%, 1m stem-pruned- 4.10%, and 2m stem-pruned- 3.99%), ash (unpruned- 2.08%, 1m stem-pruned- 2.09%, and 2m stem-pruned- 2.15%) crude lipid(unpruned- 68.59%, 1m stem-pruned- 69.52%, and 2m stem-pruned- 72.53%), and crude protein (unpruned- 18.13%, 1m stem-pruned- 17.96%, and 2m stem-pruned- 17.56%) 2. Fatty acid analysis Seeds of tree from thinned and unthinned stands contained two essential fatty acids, i.e., linoleic acid (18:2) (thinned- 54.92%, unthinned- 55.40%) and linolenic acid (18:3) (thinned- 0.19%, and unthinned- 0.23%). Over 94% of fatty acids consisted of linoleic acid (18:2)(55%), oleic acid (18:1) (32%), and palmitic acid (16:0)(7%). T-test showed difference of content at 1% significance level for palmitoleic acid (16:1), stearic acid (18:0) and 8.11, 14-eicosatrienoic acid (20:3) and at 5% for linolenic acid (18:3), but no significant difference for three major fatty acids mentioned above, between two types of trees. Thus thinning may give no influence in fatty acid content. Seeds of three types of trees contained two essential fatty acids, i.e., linoleic acid (18:2)(unpruned- 55.25%, 1m stem-pruned- 54.74%, and 2m stem-pruned- 55.00%), and linolenic acid (18:3)(0.21% for three kinds of trees). Linoleic acid (18:2)(55%), oleic acid (18:1) (32%), and palmitic acid (16:0)(6%) consisted of more than 93% of all fatty acid content. At 5% significance level in F-test, difference was observed in the content of palmitoleic acid (16:1) and 8.11, 14-eicosatrienoic acid (20:3), but not in three major types of fatty acids above mentioned. It is observed that stem-pruning gave no significant influence in fatty acid content in general.

• Analytical Science and Technology
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• v.21 no.3
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• pp.212-221
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• 2008

In order to investigate the information for effective detection and developing of latent fingerprints, we identified fatty acids composition of latent fingerprints on non-porous evidence surface and the chemical changes of latent fingerprint residue after print deposition during 7 months. Fingerprints from eight Korean male donors (aged 29-50 years) and one female donor (aged 36 years) were collected. All fingerprints were found to contain lauric acid (C12:0), myristic acid (C14:0), palmitic acid (C16:0), stearic acid (C18:0), elaidic acid (C18:1n9t), oleic acid (C18:1n9c), linoleic acid (C18:2n6c), arachidic acid (C20:0), linolenic acid (C18:3n3), erucic acid (C22:1n9) and docosadienoic acid (C22:2) and primarily palmitic acid (35.45-48.37%), oleic acid (14.84-28.49%), stearic acid (9.71-24.96%) and linoleic acid (7.68-18.8%) occupied 75% of total fatty acids. When the fingerprints were deposited at dark room for 7 months, total fatty acids components decreased about 12-25%. It can be explained that significant degradation of long-chain fatty acids such as elaidic acid (C18:1n9t), arachidic acid (C20:0), linolenic acid (C18:3n3), erucic acid (C22:1n9), and docosadienoic acid (C22:2) resulted in the generation of myristic acid (C14:0), myristoleic acid (C14:1) and pentadecanoic acid (C15:0).

• Asian-Australasian Journal of Animal Sciences
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• v.11 no.1
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• pp.60-64
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• 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.

• Korean Journal of Poultry Science
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• v.51 no.1
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• pp.21-26
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• 2024

This study was conducted to investigate the composition of the fatty acids in the breast meat of Red-brown Korean native chickens (KNC-R). This study used a total sample of three hundred eighty-two KNC-R (males: 190, females: 192). We used the fatty acid methyl ester (FAME) method to extract the fatty acids. A 2-way ANOVA of the R program was used to assess the effects of batch and sex on each fatty acid trait. Analysis of the fatty acid in the sampled population showed that the predominant fatty acid was oleic acid (C18:1; 28.252%) which is monounsaturated fatty acid (MUFA), followed by palmitic acid (C16:0; 20.895%), saturated fatty acid (SFA), and two omega-6 polyunsaturated fatty acid (PUFAs): linoleic (C18:2; 15.975%), and arachidonic (C20:4; 10.541%). Indices used to evaluate the nutritional quality of fat in the diet: ratio between PUFAs and SFAs (P/S), thrombogenicity index (TI), and atherogenicity index (AI) were calculated and were 0.959, 0.814, and 0.355, respectively. Currently, meat consumers need healthier fatty acids. Therefore, information on the content of fatty acid in chicken meat is very important for meat consumers in choosing the type of the meat to be consumed.

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.9
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• pp.1537-1543
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• 2004

The purpose of this study was to determine the effect of dietary linseed oil and canola oil on the deposition n-3 polyunsaturated fatty acid in pork. Twelve pigs weighing 50 kg were offered one of four diets based on corn and soybean meal and containing tallow, linseed oil, canola oil or mixed oil (linseed oil plus canola oil). The pigs were slaughtered at approximately 110 kg of their market live weight. Linseed oil, canola oil or mixed oil did not affect any of the three indicators of growth performance-body weight gain, feed intake and feed efficiency. Saturated fatty acid content of plasma was the highest in tallow oil group, while the plasma proportion of saturated fatty acid was lowered in linseed oil, canola oil and mixed oil group from 11.84% to 16.54% than tallow group (p<0.05). The plasma n-3 polyunsaturated fatty acid was not detected at all in the tallow-fed pigs, while the plasma proportion of n-3 polyunsaturated fatty acid were higher in linseed oil, canola oil and mixed oil from 4.68% to 12.83% than tallow group (p<0.05). All three lipid supplements containing n-3 poly-unsaturated fatty acid increased the content of pork belly $\alpha$-linolenic acid (18:3n-3) by 9.43% relative to the tallow values (p<0.05). Feeding linseed oil or canola oil increased the n-3 : n-6 ratio in pork belly to 0.68, and increased the polyunsaturated fatty acid : saturated fatty acid ratio to 0.70 (p<0.05). This result showed that feeding linseed oil and canola oil can produce novel functional pork enriched in n-3 polyunsaturated fatty acid.

• Journal of the Korean Applied Science and Technology
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• v.8 no.1
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• pp.51-54
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• 1991

The seeds of wild and cultivated Camellia japonica were studied for their lipid contents and fatty acid composition. The seeds of wild and cultivated Camellia japonica contained 70.2% and 73.4% lipids, respectively. Fifteen fatty acids were identified in the lipids from the Camellia japonica seeds. In addition to confirming the 5 previously reported (16 : 0, 18 : 0, 18 : 1, 18 : 2 and 18 : 3), 10 more acids were characterized. The newly identified acids were 14 : 0, 16 : 1, 17 : 0, 20 : 0, 20 : 1, 20 : 2, 22 : 0, 22 : 1, 24 : 0 and 24 : 1. Both seeds lipids contained 18 : 1 in high levels (81. 6${\sim}$82. 2%). Little difference in fatty acid composition was noted between the wild and cultivated Camellia japonica seed lipids. The fatty acid composition of commercial Camellia japonica oil was similar to those of the Camellia japonica seed lipids.