• 한국산학기술학회논문지
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• 제19권4호
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• pp.57-62
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• 2018

본 연구는 국내에서 생산 된 호박씨, 동백씨, 고추씨 그리고 땅콩에서 오일을 압착 추출하여 오일의 정제과정에서 사용되는 흡착제인 활성탄, 산성백토, 백도토를 사용해서, 흡착제 사용에 따른 항산화 활성과 지방산 및 활성성분의 조성을 비교분석했다. 각 오일의 성분 분석 및 흡착제에 따른 변화는 가스마토그래피/질량분석기(GCMS)를 사용하여 분석했고 DPPH 라디컬 소거능과 ABTS 라디컬 소거능 측정을 통해 항산화 활성능력을 비교했다. 흡착제 처리 시, 실험에 사용된 4종의 국내산 식물성 오일에 포함 되어 있는 대부분의 지방산 및 항산화 능에 관여하는 화합물의 양이 감소되는 것을 관찰하였다. 호박씨 오일은 세 종류의 흡착제가 linoleic acid과 erythrodiol 성분을 감소시켰으며, 동백씨 오일의 경우 지방산들이 대체적으로 감소하였으나 산성백토로 정제한 군에서는 vitamin E의 손실이 없었고, 고추씨 오일의 매운 성분에 관여되는 capsaicin 화합물은 산성백토로 정제 시 53.33% 감소되었고, 땅콩 오일의 경우 활성탄을 처리한 군에서 sitosterol 화합물의 손실이 가장 적은 것을 확인 하였다. 항산화 활성은 호박씨 오일(백도토>산성백토>활성탄), 동백씨 오일(산성백토>백도토>활성탄), 고추씨 오일(백도토>산성백토>활성탄) 그리고 땅콩 오일(활성탄>산성백토>백도토)순으로 나타남을 확인하였다.

• 한국환경성돌연변이발암원학회지
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• 제15권2호
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• pp.140-147
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• 1995

For studying the effect of different dietary fats on carcinogenesis, fatty acid composition of membrane and lipid peroxidation were measured. Male Sprague-Dawley rats were fed on diet containing 15%(w/w) beef tallow or soybean oil. A single dose of 50 mg 2-AAF/kg B.W. was injected i.p. in each diet group 10 times. Rats were sacrifled after 1, 5, 10, and 15 weeks from the first injection. By 2-AAF injection, !ipid peroxidation increased slightly compared to control group. The rats fed on different fats had similar MDA production and those fed on soybean oil had slightly higher free radical concentration measured by ESR. In young rats, iipid peroxidation level was high and hydroxy radical production was higher in soybean oil group than in beef tallow group. With age, the lipid peroxidation values were decreased initially then increased. The fatty acid composition in microsomal membrane was reflected by dietary fatty acid composition. In soybean oil group, monoenoic acid was lower and polyunsaturated fatty acid was higher than beef tallow group. Linoleic acid contents showed the most discrepancy among groups. By 2-AAF treatment, iinoleic acid content and unsaturation index increased in soybean oil group. But in beef tallow group, there was no difference in fatty acid contents.

• International Journal of Internet, Broadcasting and Communication
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• 제13권2호
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• pp.82-92
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• 2021

Purpose: It has been reported that the diversity and abundance of microbes in the vagina decrease due to the use of antimicrobial agents, and the high recurrence rate of female vaginitis due to this suggests that a new treatment is needed. Methods: In the experiment, we detected that 10% potassium sorbate solution, 1% eucalyptus oil solution, 1% tea tree oil solution, 400 µL/10 mL grapefruit seed extract solution, 100% lactic acid, 10% acetic acid solution, and 10% lactic acid solution were prepared and used. After adjusting the pH to 4, 5, and 6 with lactic acid and acetic acid in the mixed culture medium, each bacterium was inoculated into the medium and incubated for 72 h at 35℃. Incubate and 0 h each. 24 h. 48 h. The number of bacteria was measured after 72 h. Results: In the mixed culture test between lactic acid bacteria and pathogenic microorganisms, lactic acid bacteria showed good results at pH 5-5.5. Potassium sorbate, which has varying antibacterial activity based on the pH, killed pathogenic bacteria and allowed lactic acid bacteria to survive at pH 5.5. Conclusion: The formulation ratio obtained through this study could be used for the development of a feminine cleanser that can be used as a substitute for antibacterial agents. Further, the findings of this study may be able to solve the problem of antimicrobial resistance in the future.

• Corrosion Science and Technology
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• 제7권6호
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• pp.350-361
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• 2008

Canada's oil sands contain one of the largest reserves of oil in the world. According to recent estimates, there are nearly 180 billion barrels of oil in the Canadian oil sands trapped in a complex mixture of sand, water and clay. More than 40 companies have been currently operating or developing oil sands facilities since the first production in 1967. The process of oil sands upgrading is similar with down stream refinery, but the corrosion environment in upgrading refinery is often more severe than in the refinery because of high chlorides, mineral contents, carbonic acid, heavy viscosity and fouling, higher naphthenic acid [$NA-R(CH_{2})nCOOH$], and greater sulfur contents. Naphthenic acid corrosion (NAC) which is one of the most critical corrosion issues in up & downstream refinery plants was observed for the first time in 1920's in refinery distillation processes of Rumania, Azerbaizan (Baku), Venezuela, and California. As a first API report, the 11th annual meeting stated sources and mechanism of NAC in early 1930's. API has been developing the risk base standards, such as API RP580, 571, and Publication 581 which are based on the worst NAC damage in the world since 2000. Nevertheless not only the NAC phenomena and control in Canadian sands oil process are not much widely known but also there are still no engineering guidances for the Canadian sands oil in API standards. This paper will give NAC phenomina and materials selection guidance against NA environment in Canadian oil sands upgrading processes.

• 농업과학연구
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• 제3권2호
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• pp.170-176
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• 1976

야생식용유자원(野生食用油資源)의 개발(開發)을 위하여 민산초나무 종실(種實)의 일반성분(一般成分)과 종실유(種實油)의 이화학적(理化學的) 성상(性狀)을 A. O.AC. 법(法)으로, 종실유(種實油)의 지방산(脂肪酸) 조성(組成) 및 종실단백질(種實蛋白質)의 amino 산조성(酸組成)을 GLC법(法) 및 amino acid auto analyzer 로 각각 분석(分析) 측정(測定)한 결과(結果)를 다음과 같이 적요(摘要)한다 민산초나무의 종실(種實)은 비교적 다량(多量)의 유지(油脂)(47.05%), 단백질(蛋白質)(20.14%) 및 회분(灰分)(3.1%)을 함유(含有)하고 있는 영양가(榮養價)가 높은 반식물(飯食物) 또는 식용유(食用油)로 인정(認定)되었다. 민산초나무 종실(種實)에는 극미량(極微量)의 유황(硫黃)(0.02%)과 cyan 화합물(化合物)(0.00005%)이 함유(含有)되였으나 모두 한계량이하(限界量以下)로서 식용유(食用油) 및 생과(生菓)로서 이용이 안전(安全)하다. 종실유(種實油)는 옥도가(沃度價) 145.2로서 건성유(乾性油)에 속(屬)하며 산가(酸價), 감화가, 굴절율(屈折率)등 이화학적(理化學的) 성질(性質)도 불포화고급(不飽和高級) 지방산조성(脂肪酸組成)에서 특성(特性)을 나타냈다. 종실유(種實油)의 지방산(脂肪酸) 조성(組成)은 oleic acid(34.8%), linoleic acid(25.1%), linolenie acid(26.1%)등 필수지방산(必須脂肪酸)의 함량(含量)이 80%이상으로서 식용유(食用油)에 적합(適合)한 것으로 인정(認定)되였다. 종실단백질(種實蛋白質)에서 17종(種)의 amino산(酸)을 분석정량(分析定量)하였으며, lysine, threonine, valine, methionine, isoleucine, leucine, phenylalanine등 필수(必須) amino산(酸)의 함량(含量)이 비교적 높았고, glutamic acid의 함량(含量)(4.985%)이 특히 높아서 단백질원(蛋白質源)으로서 유용(有用)하다고 인정(認定)되었다.

• Journal of Nutrition and Health
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• 제26권7호
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• pp.829-838
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• 1993

This study was designed to compare the effect of different dietary fats on the incidence of colorectal tumor, the level of plasma thromboxane B2(TXB2) and fatty acid profiles of platelet and colonic mucosal lipids in N - methyl - N - nitro - N - nitrosoguanidine(MNNG) - treated rats. Male Sprague Dawley rats, at 8 weeks old, were divided into 2 groups and infused intrarectally with saline(control group) or with 2mg MNNG(carcinogen-treated group) twice a week for 3 weeks. Each group was again divided into 4 groups and fed one of four diets(BT, CO, PO, FO) containing dietary fat at 9%(w/w) level for 37 weeks, Dietary fats were beef tallow(7.2%)+corn oil(1.8%) for BT, corn oil(9.0%) for CO, perilla oil(9.0%) for PO, fish oil (6.5%)+corn oil (2.5%) for FO diets. MNNG-treated rats had colonic tumor, while no tumors(adenocarcinoma and adenoma) than others. Tumor sizes in BT-MNNG rats ranged from 2mm papillary form to 15mm of polypoid. However, the size of tumors in PO-MNNG or FO-MNNG rats could not be measured by gross examination. BT-MNNG and CO-MNNG groups were higher in the level of plasma TXB2 and the ratio of c20 : 4/c20 :5 platelet. PO-MNNG groups were lower in the ratio of c20 : 4/c20 : 5(p<0.05) in fatty acid of colonic mucosal lipids suggesting that perilla oil and fish oil could reduce the level of PGE2 and TXB2 by modifying its precursor content and restrain tumor promotion in colon. Effect of perilla oil rich in $\alpha$-linolenic acid on colon carcinogenesis was similar to that of fish oil and thus perilla oil could have a protective effect against colon cancer possibly by inhibiting the production of arachidonic acid metabolite.

• Journal of Nutrition and Health
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• 제29권1호
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• pp.32-40
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• 1996

To investigate the effect of dietary docosahexaenoic acid(DHA) and environmental enrichment on brain fatty acid composition and acetylcholinesterase(AChE) activity, two groups of was fed isocaloric diets containing 10 or 12% dietary lipids for 7 weeks. A third group was fed 10% (w/w) dietary lipids with supplemented 2% DHA-rich fish oil. Each diet group was housed either in a stainless steel cage individually or in a large enriched cage with toys where 7 rats were kept together. The fatty acid composition of plasma and brain was significantly affected by dietary lipid composition but not by environmental enrichment. Fish oil supplementation significanlty decreased plasma levels of monounsaturated fatty acids(MUFA) and increased polyunsaturated fatty acids(PUFA). Fish oil supplemented groups also maintained lower plasma n-6 fatty acids and higher n-3 fatty acids levels than unsupplemented groups. The fish oil supplementation significantly decreased arachidonic acid and increased eicosapentaenic, docosapentaenoic acids, and DHA in brain fatty acid composition. In addition, brain DHA level in supplemented groups tended higher than the unsupplemented. Brain, AChE activity significantly increased by the environmental enrichment but not by the fish oil supplementation. These finding suggest that the 2% fish oil (0.57% DHA & 0.31% EPA, per diet weigth) supplementation is enough to accumulate n-3 fatty acids and to change the n-6 n-3 ratio in brain and environmental enrichment might promote the learning ability.

• 한국식품영양학회지
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• 제25권4호
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• pp.770-778
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• 2012

In this study, the effects of intake of Acer mono Max. seed oil, and Magnolia denudata seed oil on the lipid levels of mouse blood were compared to those of commercially available vegetable oils. Five ICR mice were each fed a corn oil, Acer mono Max. seed oil, and Magnolia denudata seed oil supplemented diet for a total of 8 weeks. The serum profiles of mice fed Acer mono Max. seed oil and Magnolia denudata seed oil were high in palmitic acid, oleic acid, and linoleic acid. The saturated fatty acid contents of mice fed Acer mono Max. seed oil and Magnolia denudata seed oil were 3.95% and 0.88%, whereas the unsaturated fatty acid contents were 8.71% and 4.60%, respectively. The liver and spleen weights of mice fed Acer mono Max. seed oil were higher than those fed corn oil (p<0.05). Total cholesterol level was highest in mice fed Acer mono Max. seed oil (p<0.05), whereas there were no significant changes in the cholesterol levels of mice fed Magnolia denudata seed oil and corn oil. The HDL-cholesterol levels in mice fed Acer mono Max. seed oil ($175.80{\pm}27.66mg/d{\ell}$) and in those fed Magnolia denudata seed oil ($145.20{\pm}19.10mg/d{\ell}$) were higher compared to those of mice fed corn oil (p<0.05). In conclusion, there were no significant differences in fatty acid composition between mice fed Acer mono Max. seed oil and Magnolia denudata seed oil. Future study on the antioxidant effects of seed oils should be carried out.

• Asian-Australasian Journal of Animal Sciences
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• 제24권9호
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• pp.1249-1255
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• 2011

This study examined the effect of CLA, flaxseed oil and fish oil and their combination forms on crude fat of liver and fatty acid profiles of liver, breast and thigh meat in broiler chicks. A total of 72, 1-day-old Cobb broilers were assigned to 6 groups, and fed an experimental diet supplemented with 5 different fat sources; conjugated linoleic acid (2% CLA), flaxseed oil (2% FXO), fish oil (2% FHO), CLA and flaxseed oil combination (1:1; 2% CXO), and CLA and fish oil combination (1:1; 2% CHO). Eight birds per treatment were processed, and liver, breast and thigh samples were investigated at 21 d of age. As a result of this study, most fatty acids of liver, breast and thigh meat were influenced by fat sources supplemented in the diet (p<0.05). CLA addition resulted in an increase of crude fat and saturated fatty acid (SFA) content but a concomitant decrease in n-3 to n-6 fatty acid ratio was observed in liver (p<0.05). Moreover, the same trends of SFA and n-3 to n-6 fatty acid ratio were also observed in breast and thigh meats of birds fed CLA alone. In the CXO-fed group or CHO-fed group, n-3 and n-3 to n-6 fatty acid ratio in both breast and thigh meat increased compared with CLA group, while SFA content decreased (p<0.05). FHO fed-groups had the lowest proportion of n-6 fatty acid in both breast and thigh meats compared to other fat source treatments (p<0.05). In conclusion, the increased levels of crude fat and SFA in liver and meats obtained by feeding CLA could be reduced by its combination with FXO or FHO. In addition, the combination of CLA and FXO or FHO fed to broiler chicks could increase the n-3 to n-6 fatty acid ratio of their meat along with the deposition of CLA.

• 한국식생활문화학회지
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• 제24권3호
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• pp.344-349
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• 2009

약과 반죽시 참기름 대용으로 쇼트닝을 이용할 목적으로 쇼트닝의 혼합비율을 달리하여(참기름 100%, 참기름 75%+쇼트닝 25%, 참기름 50%+쇼트닝 50%, 쇼트닝 100%) 약과를 제조하고, 약과 유지의 지방산 조성, 유지함량, 원료유지의 잔존율, 저장 중의 유지산패도(산가, 과산화물가, 카르보닐가)를 측정하여 쇼트닝 약과의 유지안정성을 비교 분석한 결과 다음과 같았다. 1. 약과 반죽의 유지 함량은 9.33%였으나, 튀김 후 시료 구별 약과의 유지함량은 25.20-29.12%로서 아주 높았다. 이들 약과의 유지 구성은 반죽에 첨가되었던 원료유지와 튀김에 사용된 튀김유(대두유)의 비율이 각각 16-10%와 84-90%로서 튀김유가 대부분을 차지하였다. 2. 모든 약과의 지방산 조성은 쇼트닝의 첨가수준에 관계 없이 시료구간에 거의 유사하여 linoleic acid 49.71-51.27%, oleic acid 26.05-26.77%, palmitic acid 10.07-11.71%, linolenic acid 5.51-5.72% stearic acid 4.51-4.68%였으며, 이것은 튀김유(대두유)의 지방산 조성과 유사하였다. 3. 쇼트닝 첨가에 따른 약과의 저장중 산가, 과산화물가, 카르보닐가의 변화는 쇼트닝 첨가가 산가의 증가를 다소 지연시켰으나 과산화물가와 카르보닐가는 시료구간에 차이를 나타내지 않았다. 약과 제조시에 반죽에 첨가되는 유지의 지방산 조성이 크게 다르더라도 약과의 유지 산패도는 큰 차이를 보이지 않았다. 이것은 튀김 과정 중 튀김유가 약과내로 다량 흡유되어 약과반죽의 원료유지보다도 큰 영향을 준 것으로 생각된다. 따라서 쇼트닝은 약과 반죽에 참기름 대용으로 사용될경우 약과의 유지 산패 면에서는 참기름 100% 약과와 차이가 없어 약과 제조시 참기름 대체효과가 있을 것으로 기대된다.