• 한국조리학회지
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• 제5권2호
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• pp.401-418
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• 1999

Many plants and animal have long been known to have medicinal effects and therefore have been used as medicines. There are many substances that show various pharmacologic efficacy such as anti-tumor efficacy, anti-inflammatory efficacy, cholesterol-lowering efficacy, anti-coagulant of blood efficacy and anti-bacterial efficacy. I summarized the recent advances in research on physiologically functional foods. The pharmacological efficacy of dietary fiber, chitin & chitosan, DHA(docosahexaenoic acid), mushroom, alginic acid and herbs have selected as topices for discussion. I was examining the anti-coagulant activity of herbs, I discovered that Eugenia caryophyllata T. (clove) had a relatively high anti-coagulant activity.

• Nutrition Research and Practice
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• 제15권2호
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• pp.137-159
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• 2021

Long-chain (LC) n-3 polyunsaturated fatty acids (n-3 PUFAs), in particular docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), are nutrients involved in many metabolic and physiological processes, and are referred to as n-3 LCPUFA. They have been extensively studied for their effects in human nutrition and health. This paper provides an overview on metabolism, sources, dietary intake, and status of n-3 LCPUFA. A summary of the dietary recommendations for n-3 LCPUFAs for different age groups as well as specific physiological conditions is provided. Evidence for n-3 LCPUFA in cardiovascular diseases, including new studies, is reviewed. Expert recommendations generally support a beneficial effect of n-3 LCPUFA on cardiovascular health and recommend a daily intake of 500 mg as DHA and EPA, or 1-2 servings of fish per week. The role of n-3 LCPUFA on brain health, in particular neurodegenerative disorders and depression, is reviewed. The evidence for beneficial effects of n-3 LCPUFA on neurodegenerative disorders is non-conclusive despite mechanistic support and observational data. Hence, no definite n-3 LCPUFA expert recommendations are made. Data for the beneficial effect of n-3 LCPUFA on depression are generally compelling. Expert recommendations have been established: 200-300 mg/day for depression; up to 1-2 g/day for major depressive disorder. Recent studies support a beneficial role of n-3 LCPUFAs in reducing the risk for premature birth, with a daily intake of 600-800 mg of DHA during pregnancy. Finally, international experts recently reviewed the scientific evidence on DHA and arachidonic acid (ARA) in infant nutrition and concluded that the totality of data support that infant and follow-on formulas should provide both DHA and ARA at levels similar to those in breast milk. In conclusion, the available scientific data support that dietary recommendations for n-3 LCPUFA should be established for the general population and for subjects with specific physiological conditions.

• Journal of Nutrition and Health
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• 제30권5호
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• pp.478-488
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• 1997

Omega-3 fatty acid, docosahexaenoic acid(DHA) is found in a high proportion in the structural lipids of cell membranes, in particular those of the central nervous system and the retina. Diet-induced changes in fatty acid composition in these tissues may affect physiochemical functions. This study was conducted to investigate whether supplements of DHA in infant formula has an effect on the composition of fatty acids in erythrocytes with regard to brain development. Experimental groups were breastmilk group(n=21), placebo formula group(n=15), and DHA supplemented formula (0.26%) group(n=16). Infants were selected by mothers who deliverecdd at Kyung Hee medical center from February to April, 1996. Infant body weight, length, and head circumference were similar among the experimental groups at 16 weeks of age. The levels of DHA in breastmilk, placebo formula, and DHA supplemented formula were 0.56, 0, and 0.26% of total fatty acids, respectively. There was a significant correlation between dietary DHA intake and erythrocyte DHA levels. The levels of arachidonic acid did not differ among the three expermental groups. The result of flash visual evoke potential(VEP) test was correlated with the erythrocyte levels and dietary DHA levels at 16 weeks of age. No other fatty acid was correlated with VEP test results. No differences were found in Bayley Mental and Psychomotor Development Index scores among the three groups at 20 weeks of age. DHA seems to be an essential nutrient for optimum growth and maturation of term infants. Relatively small amounts of dietary DHA supplementation significantly elevate DHA supplementation significantly elevate DHA content in erythrocytes, which in turn has an implication for better scores for infant's VEP test. Whether supplementation of formula-fed infants with DHA has long-term benefits remains to be elucidated.

• 생명과학회지
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• 제10권2호
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• pp.115-124
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• 2000

The present study was undertaken to separate the available components effectively, such as tetrodotoxin(TTX), docosahexaenoic acid(DHA, C22:6,ω-3) and eicosapentaenoic acid (EPA, C20:5,ω -3) from pufferfish liver waste, which are known to have high values as bioactive materials. By using ultrafiltration, it was possible to separate high contents of 68mg TTX from pufferfish liver waste. In contrast, by activated charcoal column, it was to obtain about 54mg TTX. The recovering ratios were 65.3% and 45.0% in the two different methods of ultrafiltration and activated charcoal column, respectively. From the results of HPLC and gas chromatography-mass spectrometry(GC-MS), the obtained toxins were identified to be TTX and its derivatives. In addition, it was also possible to obtain 72.3g DHA and 11.4g EPA from 1kg of pufferfish liver by high performance liquid chromatography (HPLC). These amounts of DHA and EPA were also 17.70% and 1.04% in the total lipid of pufferfish liver oil from analysis of gas chromatography(GC), respectively.

• KSBB Journal
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• 제13권1호
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• pp.90-95
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• 1998

Candida cylindracea유래의 리파제인 lipase-OF 360,000를 이용한 다중불포화지방산의 농축공정개발에 관한 연구를 수행하 였다. Lipase-OF 360,000은 5가지 종류에 대한 유지의 가수분해에서 다중불포화지방산인 n-3족 아실기를 다량 함유하는 물고기기름에 대해서만 낮은 활성을 보였다. 이 리파제에 의한 물고기기름의 가수분해에서 반응이 진행됨에 따라 DHA는 계속 농축되는 양상을 보이지만 EPA의 경우는 가수분해반응이 0-30% 진행시까지는 완만하게 농축이 진행되다가 30-50% 진행되는 동안은 더 이상의 농축이 진행되지 않았고 약 50% 이상부터는 감소하기 시작하여 반응 완료시에는 반응전 물고기기름에 있어서 EPA의 함량과 거의 비슷한 약 18% 정도로 감소되었다. 이러한 양상은 기질에 대한 Lipase-OF 360,000의 농도에 상관없이 거의 유사하게 일어났다. 본 연구결과로서 Lipase-OF 360,000의 아실 체인 특이성을 두 가지로 요약할 수 있는데 첫 번째는 가수분해에 있어서 물고기기름내의 n-3족 다중불포화지방산과 그 외의 다른 지방산들의 차별성이다. Lipase-OF 360,000은 n-3족 다중불포화지방산에 대해서만 현저히 낮은 활성을 보였다. 두 번째는 n-3족 다중불포화지방산이 가지는 구조적 차이가 Lipase-OF 360,000의 특이적 활성에 미치는 영향이다. 이 경우는 n-3족 다중불포화지방산내의 탄소수와 불포화도가 높을수록 Lipase-OF 360,000의 활성이 좋지 않았다.

• 한국식품영양과학회지
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• 제30권1호
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• pp.14-19
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• 2001

This study was designed to compare content and composition of fatty acid in egg yolk oil among general eggs from chicken, quail, duck. We also compared those of general and functional chicken egg. Fatty acids were determined by GC method and the results were as follows: Palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, linolenic acid and timnodonic acid were identified in egg of chicken, quail and duck. The major fatty acid was oleic acid and palmitic acid in three kinds of eggs. Arachidonic acid and docosahexaenoic acid (DHA) were analyzed in egg of quail , but no in chicken. Monounsaturaterd fatty acid (MUFA) was higher in egg yolk oil of chicken and quail. Polyunsaturated fatty acid (PUFA) was higher in duck egg. Ginseng egg had significantly higher palmitic acid and oleic acid lower than general chicken egg. Gamgoal egg had lower palmitic acid and oleic acid, and higher palmitoleic acid and stearic acid than general chiekcn egg. The content of oleic acid was lower in DHA egg than in general chiecken egg, but arachidonic acid was detected only in DHA egg. Ginseng egg had the highest content of saturated fatty acid among chicken eggs. The content of MUFA acid was the highest in gamgoal egg and general chicken egg. DHA egg had the most amount of PUFA among all chicken egg.

• Preventive Nutrition and Food Science
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• 제21권4호
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• pp.317-322
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• 2016

Mitochondrial biogenesis is a complex process requiring coordinated expression of nuclear and mitochondrial genomes. The peroxisome proliferator-activated receptor gamma co-activator 1-alpha (PGC-$1{\alpha}$) is a key regulator of mitochondrial biogenesis, and it controls mitochondrial DNA (mtDNA) replication within diverse tissues, including muscle tissue. The aim of this study was to investigate the effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on mtDNA copy number and PGC-$1{\alpha}$ promoter activity in $C_2C_{12}$ muscle cells. mtDNA copy number and mRNA levels of genes related to mitochondrial biogenesis such as PGC-$1{\alpha}$, nuclear respiratory factor 1 (NRF1) and mitochondrial transcription factor A (Tfam) were assayed by quantitative real-time PCR. The PGC-$1{\alpha}$ promoter from -970 to +412 bp was subcloned into the pGL3-basic vector, which includes a luciferase reporter gene. Both EPA and DHA significantly increased mtDNA copy number, dose and time dependently, and up-regulated mRNA levels of PGC-$1{\alpha}$, NRF1, and Tfam. Furthermore, EPA and DHA stimulated PGC-$1{\alpha}$ promoter activity in a dose-dependent manner. These results suggest that EPA and DHA may modulate mitochondrial biogenesis, which was partially associated with increased mtDNA replication and PGC-$1{\alpha}$ gene expression in $C_2C_{12}$ muscle cells.

• 한국식품영양과학회지
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• 제29권6호
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• pp.981-986
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• 2000

수산물 제조를 위한 가공공정 중 발생하는 부산물 양은 전체 원료의 30~35%정도를 차지하나 일부만이 식품원료로 재 이용되고 대부분이 사료로 이용되거나 폐기물로 버려지고 있는 실정이다. 따라서 이들 부산물의 이용성을 증대시키기 위한 일환으로 기능성 향상 및 제품화를 위 한 기초적인 자료를 확보하고자 하였다. 먼저, 참치 가공 부산물을 어피살, 어피, 꼬리, 혈합육, 복육으로 분류하여 일반성분을 조사한 결과에서 조단백질은 26.31%로 어피에서 비교적 많았으며 나머지 부위에서는 21% 내외였다. 조지방도 어피에서 15.58%로 가장 높게 함유되어 있었으나 혈합육에서는 0.75%로 낮게 함유되어 있었다. 특수성분 중 vitamin C의 경우에 복육(175.56 mg/ kg)에서, vitamin B$_1$, B$_2$의 경우는 혈합육(4.26 mg/ kg, 3.09 mg/kg)에 많이 함유되어 있었고 불포화 지방산은 어피살과 꼬리에 많이 함유되어 있었고 특히, 고도 불포화지방산인 DHA(C22 : 6 $\omega$ -3)와 EPA(C22 : 6 $\omega$ -3)는 어피살과 어피에 많았다. 이들 유용 성분에 대하여 참치의 일반적인 가공처리 공정인 자숙 후 지방산 함량 변화는 어피살과 혈합육의 15-methylhexadecanoic acid(i-17 : 0)가 증가되었으며 어피에서는 3-hydroxytetra-decanoic acid (3-OH 14 : 0), heptadecanoic acid(17 : 0), 2-hydroxyhexadecanoic acid (2-OH 16 : 0), nonadeca-noic acid(19 : 0) 등이 새로이 검출되었고 혈합육은 DHA와 EPA가 변화가 적었고 어피에서는 DHA의 변화가 적었으나 EPA가 검출되지 않았고, 꼬리에서는 DHA와 EPA가 검출되지 않았다.

• 한국수산과학회지
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• 제27권6호
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• pp.712-726
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• 1994

조피볼락 사료의 EPA 및 DHA 필수성과 적정 EPA/DHA 비를 구명하기 위해, 기본 지질을 우지로 하여 EPA와 DHA를 각각 $0{\sim}1.75\%$ 첨가한 사료와 EPA/DHA 비를 다르게 첨가한 사료 18종을 제조하여 조피볼락 치어(평균 체중 2.1 g)를 대상으로 5주간 사육 실험한 결과는 다음과 같다. 일간증중율(EPA 사료: $2.39{\sim}3.66\%$, DHA 사료: $2.39{\sim}3.72\%$)과 사료효율(EPA 사료: $73{\sim}97\%$, DHA 사료: $73{\sim}100\%$)은 EPA 및 DHA 사료 모두 사회중의 함량 $1.0\%$까지만 증가하고 그 후에는 일정한 값을 나타내어, EPA 및 DHA 요구량이 모두 $1.0\%$로 추정되었다. 단백질축적효율(EPA 사료: $23.3{\sim}32.6\%$, DHA 사료: $23.3{\sim}35.9\%$)과 지질축적효율(EPA 사료: $82.2{\sim}109.5\%$, DHA 사료: $82.2{\sim}112.1\%$)도 사료의 EPA 또는 DHA가 증가할수록 증가하였다. 이러한 결과들은 EPA 사료에서보다 DHA 사료에서 전반적으로 좋은 반응을 보였으며, EPA/DHA 사료에서도 EPA에 대한 DHA 비가 1.0 이상인 사료에서 양호한 결과를 보였다. 전어체의 단백질 함량은 큰 변화가 없었지만 지질 함량은 사료의 EPA 및 DHA가 증가할수록 약간씩 증가하는 경향을 나타내었다. 간중량비는 사료의 EPA 및 DHA 함량이 증가함에 따라 감소하였으며, DHA 사료가 EPA 사료보다 대체로 낮은 값을 보였다. 사료의 EPA가 증가함에 따라 간 극성지질의 EPA ($0.4{\sim}4.3\%$) 함량은 증가하였으나DHA ($0.2{\sim}l.0\%$) 함량은 거의 증가하지 않았고, 사료의 DHA 증가와 더불어 간 극성지질의 DHA ($1.0{\sim}6.4\%$) 함량은 증가하였으나 EPA ($0.2{\sim}0.5\%$) 함량은 증가하지 않았다. 반면, 간 비극성지질의 지방산조성은 사료 지방산조성에 영향을 거의 받지 않아 변화 폭이 적었다.

• Journal of Nutrition and Health
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• 제27권9호
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• pp.901-909
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• 1994

The effects of sardine oil(high in eicosapentaenoic acid : EPA) and tuna oil(high in docosahexaenoic acid : DHA, also high in EPA) on fatty acid composition of brain and learning ability were evaluated in male weanling Sprague-Dawley rats and compared with the effects of corn oil and beef tallow. Animals assigned by randomized block design to one of the four experimental diet groups containing dietary lipid at 15%(w/w) level were given ad libitum for 7 weeks. Food intake and body weight gain of the fish oil groups were significantly lower than those of the corn oil and beef tallow groups. However, brain weights of the groups were not significantly different. In the brain fatty acid composition, the corn oil group showed high concentrations of n-6 fatty acids, the fish oil groups of n-3 fatty acids, and the beef tallow group of saturated fatty acids. Brain EPA and DHA contents of the fish oil groups showed significantly higher than the other groups while the brain ratio of saturated/monounsaturated/polyunsaturated fatty acid was controlled in a narrow range. In a maze test, the fish oil groups appeared to arrive at the goal faster than the corn oil and beef tallow groups. It explained that EPA in diets might efficiently convert to DHA resulting in DHA accumulation in brain tissue and might increase the learning performance as DHA did.