• Tribology and Lubricants
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• 제8권1호
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• pp.56-62
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• 1992

The naphthenic base oil has been formulated to insulating and refrigerating oils. In the views of decreasing of the naphthenic crtide oil, new sources as its replacement have been needed. To solve this situation, the synthesis of naphthenic oil has been carried under hydrogenation reactions of alkyl aromatic compounds using various catalysts. The sturcture of reaction products has been investigated using spectroscopic methods such as NMR, UV, IR and HPLC. On the basis of the experimental results, it was convinced that unsaturated aromatic ring was saturated to saturated rings, and also optimum cond~tions established. Throughout this study, new resource as the replacement of conventional naphthenic oil has introduced.

• 한국자원식물학회지
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• 제24권6호
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• pp.696-701
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• 2011

The aim of this field experiment was to investigate the possible effects of mepiquat chloride (TE) and trinexapac-ethyl (MC) on oil composition, seed yield and endogenous gibberellins content of flax cultivar. Foliar application of plant growth retardants mepiquat chloride (0.897, 1.794 and 2.691 kg a.i. $ha^{-1}$) and trinexapac-ethyl (0.756, 1.512 and 2.668 kg a.i. $ha^{-1}$) had significantly increased seeds ripening rate and seed yield. In contrast, plant height was decreased by foliar application of MC and TE. The application of MC significantly increased seed oil yield (730 kg $ha^{-1}$ by 27.0%) compared to the control. Seed and oil yield, and unsaturated fatty acids (oleic acid, linoleic acid and linolenic acid) were increased by foliar application of MC.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 추계학술발표대회 및 bio-venture fair
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• pp.769-772
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• 2000

강원도 동해안에서 다량 어획되어 가공되는 오징어 및 명태 내장으로부터 추출되는 내장유 용도 확대 및 고부가가치화를 위한 미세 캡슐화를 제조를 위한 조건을 시험하였다. 미세 캡슐 소재로 wall material은 gum arabic과 유화제로 gelatin이 적절하고, gum arabic과 gelatin을 소재로하여 배합비를 달리하였을 때, 전체적인 경향을 유화제가 wall material 보다 많은 것이 양호한 미세 캡슐이 된다는 것을 확인하였다. 상기한 소재로 제조된 미세 캡슐의 캡슐화율은 25-45.5% 정도의 범위로 전체적으로 미세캡슐화율은 낮았다. 향후 CMC, maltodextrin 그리고 키토산 등을 소재로 미세 캡슐화 조건을 좀 더 검색할 필요가 있을 것으로 판단되었다.

• 자원리싸이클링
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• 제27권2호
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• pp.55-62
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• 2018

식물성 기름을 포수제로 사용하였을 때 바텀애쉬 부유선별의 특성에 대해 알아보고자 본 연구를 실시하였다. 석탄회 부유선별에서 유상 포수제로 사용되는 Kerosene의 첨가량 변화에 따른 실험에서 Kerosene을 9 kg/ton의 비율로 첨가하였을 때, 미연탄소 회수율이 80%, 부유 산물의 미연탄소 함량이 63%인 것으로 나타났다. 부유선별 효율을 향상시키기 위해 식물성 기름인 콩유를 포수제로 사용한 실험에서는 콩유를 9 kg/ton의 비율로 첨가하였을 때, 미연탄소 회수율과 부유 산물의 미연탄소 함량이 각각 95%, 68%로 증가하였다. 콩유보다 이중결합이 있는 폴리 형태의 불포화 지방산이 많이 함유된 홍화씨유를 9 kg/ton의 비율로 첨가하였을 때, 미연탄소 회수율 99%, 부유 산물의 미연탄소 함량은 78%로 나타났다. 부유 산물의 미연탄소 발열량은 5,803 cal/g으로 나타나 화력발전소 에너지 연료로 활용이 가능함을 확인하였다. 최종적으로 식물성 기름을 포수제로 사용하였을 때 광물성 기름인 Kerosene보다 미연탄소 회수율과 부유 산물의 미연탄소 함량이 높은 것으로 나타났다. 또한, 식물성 기름 중 이중 결합이 2개 이상인 폴리형태의 불포화 지방산이 많이 함유된 기름일수록 부유 산물의 미연탄소 함량이 높아 미연탄소에 대한 흡착성이 우수한 것을 알 수 있었다.

• 한국식품저장유통학회지
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• 제4권3호
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• pp.287-293
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• 1997

This study was investigated to viscosity, color, chemical properties, and lipid and fatty acid composition for examination of physical and chemical characteristics of sesame oils. Yield of sesame oil was higher in Ansan sesame than that of Chinese and Dambaek sesame. Viscosity of sesame oils was higher than that of shame oils from Dambaek and Chinese sesame, but turbidity and sedimentation rate were higher in Dambaek's sesame oil than those of Ansan's and Chinese sesame oils. In the acid value, saponification value and iodine value of sesame oils, and chemical characteristics of Dambaek's sesame oil were better than those of the others. The neutral, glycolipid and phosholipid contents of sesame oils were 91.1∼92.1, 2.5∼3.5 and 5.5∼6.4%, respectively. The major fatty acids of sesame oils were oleic, linoleic palmitic and stearic acid. The content of oleic acid was higher in Dambaek's and Ansan's sesame oil than that of Chinese sesame oil, and the content of linoleic acid was higher in Chinese sesame oil than the others. The fatty acid composition of neutral lipid, glycolipid and phospholipid were similar to those of total lipid. The ratio of unsaturated fatty acid and saturated fatty acid was higher in Korean sesame oils than those in Chinese sesame oil. The mineral(Mg, Cu, Fe, In, Al, Mn) content of Korean sesame oils was higher than that of Chinese sesame oil. and heavy metals(Cu, Ag, Pb, Cd, As) were not detected.

• Asian-Australasian Journal of Animal Sciences
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• 제28권7호
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• pp.976-986
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• 2015

The present study was conducted to determine the effects of lipid sources with different fatty acids profile on meat fatty acids profile and beef quality traits of Nellore. A total of 45 Nellore animals with an average initial body weight of $419{\pm}11kg$ (at $15{\pm}2mo$) were distributed in a completely randomized design consisting of 5 treatments and 9 replicates. The roughage feed was maize silage (600 g/kg on a dry matter [DM] basis) plus concentrate (400 g/kg on a DM basis). The dietary treatments were as follows: without fat (WF), palm oil (PO), linseed oil (LO), protected fat (PF), and soybean grains (SG). No effects of lipid sources were observed (p>0.05) on beef color, pH, water-holding capacity, and sarcomere length. Beef from cattle fed PO had greater shear-force values (p<0.05) compared to beef from cattle fed WF. Deposition of main unsaturated fatty acids (oleic, linoleic, and linolenic) was greater in treatments WF, SG, and LO, respectively, while the values of conjugated linoleic acid (CLA) were greater when animals were fed LO. The inclusion of LO in the diet enhances the concentration of CLA in longissimus muscle and subcutaneous fat besides improving the atherogenicity index and elongase activity. As such, LO can be used with the aim to improve the quality of beef from confined Nellore cattle. Conversely, the use of PO is not recommended since it may increase the concentration of undesirable unsaturated fatty acids in muscle and subcutaneous fat, shear-force and the atherogenicity index.

• Journal of Ginseng Research
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• 제42권4호
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• pp.419-428
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• 2018

Background: Despite the large number of studies on ginseng, pharmacological activities of ginseng seed oil (GSO) have not been established. GSO is rich in unsaturated fatty acids, mostly oleic and linoleic acids. Unsaturated fatty acids are known to exert a therapeutic effect in nonalcoholic fatty liver disease (NAFLD). In this study, we investigated the protective effect and underlying mechanisms of GSO against NAFLD using in vitro and in vivo models. Methods: In vitro lipid accumulation was induced by free fatty acid mixture in HepG2 cells and by 3 wk of high fat diet (HFD)-feeding in Sprague-Dawley rats prior to hepatocyte isolation. The effects of GSO against diet-induced hepatic steatosis were further examined in C57BL/6J mice fed a HFD for 12 wk. Results: Oil Red O staining and intracellular triglyceride levels showed marked accumulation of lipid droplets in both HepG2 cells and rat hepatocytes, and these were attenuated by GSO treatment. In HFD-fed mice, GSO improved HFD-induced dyslipidemia and hepatic insulin resistance. Increased hepatic lipid contents were observed in HFD-fed mice and it was lowered in GSO (500 mg/kg)-treated mice by 26.4% which was evident in histological analysis. Pathway analysis of hepatic global gene expression indicated that GSO increased the expression of genes associated with ${\beta}$-oxidation (Ppara, Ppargc1a, Sirt1, and Cpt1a) and decreased the expression of lipogenic genes (Srebf1 and Mlxipl), and these were confirmed with reverse transcription and quantitative polymerase-chain reaction. Conclusion: These findings suggest that GSO has a beneficial effect on NAFLD through the suppression of lipogenesis and stimulation of fatty acid degradation pathway.

• 한국응용과학기술학회지
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• 제16권1호
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• pp.45-57
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• 1999

This study was designed to examine the effect of ${\omega}-3$ fatty acid, linlenic acid, EPA, DHA on serum lipid and cytokines of male rats(Sprague-Dawley). Animals of 3 groups were administrated perilla oil, salmoon oil, and tuna oil of 0.4 $m{\ell}/day$ for 8 weeks respectively. These oils were used for a source of linolenic acid, EPA and DHA. ${\omega}-3$ polyunsaturated fatty acid decreases significantly body weight, serum $PGE_2$ content and serum cytokines content of the rat, and increases internal organs weight, specially liver weight and serum HDL-cholesterol level of the rat. In the results, authors propose to use perilla oil for source of effective ${\omega}-3$ poly-unsaturated fatty acid(linolenic acid) to Prevent cardiovascular and immune diseases.

• Food Science and Biotechnology
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• 제15권3호
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• pp.404-408
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• 2006

Feasibility of surface plasmon resonance (SPR) method to evaluate soybean frying oil quality was evaluated. Free fatty acid value, p-anisidine value, conjugated dienoic acid content, conjugated trienoic acid content, peroxide value, iodine value, total polar compound (TPC), ratio of unsaturated fatty acid to saturated fatty acid, refractive index, dielectric constant, smoking point, and L, a, and b of Hunter color system were selected as parameters related to conventional evaluation of soybean frying oil quality. SPR scale mapped with conventional quality parameters well described free fatty acid value, conjugated dienoic acid content, dielectric constant, TPC, and b of Hunter color system, as shown by correlation and linear regression analyses.

• 한국작물학회지
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• 제25권1호
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• pp.54-65
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• 1980

참깨의 유질을 개량하기 위한 기초연구로 참깨유구성지방산 종류별 함량의 품종간 차리와 조성의 특성을 밝히고자 시험을 하였는 바 기 결과를 요약하면 다음과 같다. 1. 불포화지방산인 Olieic acid는 평균 39% 함유 되어 있으며 최저함량은 32.6%에서 최고함량은47.3%까지 14.7%의 변이복을 가지적 주지방산인 Linoleic acid의 함량은 평균적으로 45.8%이며 최w저 31.1%에서 최고 54.9%까지 무려 23.8%의 품종간 차를 보였다. 2. 포화지방산인 Palmitic acid와 Stearic acid의 함량에서는 Palmitic acid의 평균함량은 9.5% 최저 4.6%, 최고 18%로서 13.4%의 품종간 차이가 있으며 Stearic acid 평균함량 4.8%, 최저 1%에서 최고 9%까지 8%의 품종간 변이를 보였다. 3. 품종 유래에 따른 지방산 조성 차이를 보면 한국품종과 미국품종들이 Palmitic, Stearic acid 함량이 가장 낮고 필수지방산인 Linoleic acid 함량이 가장 높았는데 특히 한국품종은 가장 양질유 품종들이었다. 대체로 재배기간의 온도가 높을수록 포화 지방산 함량이 높은 경향이었다. 4. 특히 한국재래종은 불포화양질유지방산 함량이 세계적으로 가장 높았으며 재래종인 만성종은 Linoleic acid 함량이 54.9%이며 Oleic + Linoleic acid 함량이 92%에 이르러 참깨 지방산 개량육종에 중요한 유전자원이라 할 수 있다. 5. 참깨 종피색별 지방산조성 차이에서는 양질지방산인 Linoleic acid 함량과 Oleic acid함량이 가장 높았던 것은 황색 종피종(47.5%)이었으며 그다음이 갈색 종피종이었다. 6. 지방산 조성의 숙기별 차를 보면 포화지방산에서는 숙기별 차이가 거의 없으나 불포화지방산중 Oleic acid는 조숙에서 만숙으로 갈수록 함량이 감소하는데 반해서 Linoleic acid는 만숙일수록 함량이 증가하는 경향이었다. 특히 조숙종에서는 Oleic acid 함량이 Linoleic acid 함량보다 약간 더 높아서 중ㆍ만숙종과 조성 패턴이 다름을 보여 주었다. 7 착과습성에 따른 지방산조성 차이에서는 1과성은 포화지방산이 높고 3과성은 불포화지방산중 Linoleic acid 함량이 1과성보다 월등히 높았으나 Oleic acid 함량은 1과성보다 약관 낮은 편이었다. 8. 실방수 차이에서는 3과성 2실4수이 불포화지방산이 가장 높았고 포화지방산에서는 1과성 2실4수이 가장 높았다. 4실8수에서는 일정한 영향이 보이지 않았다. 9. 지방산 간의 상관관계를 보면 불포화지방산과 포화지방산 간에는 r =-0.955**의 높은 부의 상관을 보여 지방산 개량육종의 전망을 밝게 해주며 O1eic과 Linoleic acid간에도 에우 높은 부상관을 나타내고 있어 필수지방산 함량을 높이는 개량 육종도 가능하다.