• 한국축산식품학회:학술대회논문집
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• 한국축산식품학회 2006년도 정기총회 및 제37차 춘계 국제학술발표대회
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• pp.98-101
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• 2006

본 연구는 사육면적에 따른 비육후기 28개월령 비거세 한우육의 냉장중 PH, 보수력, 지방산 조성 및 전자코에 의한 향기 패턴 비교를 구명하고자 실시하였다. 도축전 6개월 동안 사육면적(9, 18, 27 $m^2$)에 따라 공시하고 도축후 등심(M. longissimus) 부위를 $4{\pm}0.5^{\circ}C$에 9일 동안 저장하면서 실험하였다. pH는 저장 3일까지 27 $m^2$에서 사육한 한우육이 9, 18 $m^2$에서 사육한 한우육보다 유의적으로 높았다(p<0.05). 사후강직후 48시간의 드립 감량은 27 $m^2$에서 사육한 한우육이 9, 18 $m^2$에서 사육한 한우육보다 유의적으로 낮았다(p<0.05). 지방산 조성에서 C20:5n3(EPA)과 PUFA n3 지방산 총량은 27 $m^2$에서 사육한 한우육이 9 $m^2$에서 사육한 한우육보다 유의 적으로 높았으며(p<0.05), PUFA n6/n3 비율은 낮았다(p<0.05). 전자코의 PCA에 의한 향기 패턴은 저장기간 동안 사육면적에 따른 차이가 나타나지 않았다. 따라서 27 $m^2$에서 사육한 비거세 한우육의 보수력 및 PUFA n3 지방산 함량이 가장 높았으며, PUFA n6/n3 비율은 가장 낮았다.

• 한국식품영양과학회지
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• 제23권2호
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• pp.198-204
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• 1994

This study was carried out to investigate the effect of the feeding mixture of linesed oil, rich in n-3 PUFA and the sunflower seed oil, rich in n-6 PUFA on the lipid metabolism in the dietary hypprlidemic rats. After male Sprague-Dawley rats were induced hyperlipidemia by feeding the diet containing lard, butter, and cholesterol for 3 weeks, then they were fed with the diet containing lard 3.0% and butter 12.0% for control, the mixture in different proportion of both linseed oil and sunflower seed oil, and antihyperlipidemic durgs for 2 weeks. Analysis of the lipid component and the fatty acid composition of the liver showed following results. Concentration s of the total cholesterol and phospholipid in liver were significantly higher in group 2 (olive oil 12.0%) and lower in the other groups than in the control group, especially lower in groups 3 (cholestyramine 2.0%) and 9 (sunflower seed oil 12.0%) . Concentration of triglyceride was lower in the other groups except group 4 (liparoid), especially lowe rin group 9 than in the control group. In the fatty acid composition of liver lipids, C18:2 was the major fatty acid. Contents of n-6 PUFA increased , while those of n-3 PUFA decreased in groups composition of the test lipids. From the data on concentration s of total cholesterol. Phospholipid and triglyceride in liver, we concluded that the feeding mixed with 3.0% lard and 12.0 % sunflower seed oil were most effective for the improvement of the live lipids. The fatty acid composition in liver lipids were affected by the fatty acid composition of the test lipids.

• 동아시아식생활학회지
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• 제22권2호
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• pp.147-162
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• 2012

Abdominal obesity is an important factor of metabolic syndrome and is known as an independent risk factor of cardiovascular disease. The purpose of this study was to examine the fatty acid intake pattern as well as the association between fatty acid intake and abdominal obesity and hyperglycemia in Korean adults. This study was based on data from the Korea National Health and Nutrition Examination Surveys (KNHANES) I, II, III, and IV. After excluding subjects who had missing data for dietary intakes, anthropometric measurments, and laboratory tests, a total of 12,320 subjects aged 20~64y (5,266 men and 7,054 women) were included in the study. Trends in individual consumption of dietary fatty acids by year were analyzed by One-way ANOVA test, and the association between fatty acid intake and abdominal obesity and hyperglycemia was analyzed by logistic regression analysis after adjusting for age, energy intake, marital status, job, education level, alcohol intake, and smoking status. In men, intakes of TFA, SFA, MUFA, FUFA, and n-6 PUFA significantly increased with year. On the other hand, intakes of TFA, SFA and FUFA significantly increased with year in women. Logistic regression analysis showed that the risk of abdominal obesity was significantly associated with intakes of PUFA, LNA and n-3 PUFA in women. However, there was no association with any fatty acid intakes in men. The risk of hyperglycemia was significantly and positively associated with intakes of TFA, SFA, PUFA, and LNA in men, but, there was no significant association with any fatty acid intakes in women. These results show that abdominal obesity and hyperglycemia are significantly associated with individual intake of fatty acids, suggesting that fatty acid type may be associated with risk of abdominal obesity and hyperglycemia. Futher, the macronutrients of measl must be properly balanced.

• Animal Bioscience
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• 제34권1호
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• pp.119-126
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• 2021

Objective: This study aims to evaluate the effects of dietary supplement of rubber seed oil on production performance, egg quality, and yolk fatty acid composition in laying hens during a 16-week feeding trial period. Methods: Forty-eight 25-week-old laying hens of Hy-Line Brown were randomly divided into three groups. Each group comprised four replicates and each replicate had four birds. Rubber seed oil was incorporated into a corn-soybean meal basal diet by 3.5% (group I), 4.5% (group II), or 0 (control group) and equivalent nutrition was supplied for the test groups and the control group. The performance related values were determined using standard or well established methods. Results: No significant difference was found in the production performance, the egg quality, the composition of saturated fatty acids, and the content of cholesterol and monounsaturated fatty acids in the yolk within the three groups. Interestingly, both test groups achieved a significantly higher content of linoleic acid, α-linolenic acid, eicosapentaenoic acid, and docosahexaenoic acid and a significantly lower content of arachidonic acid (p<0.05) compared with the control group. With the increased level of dietary rubber seed oil, there was an increasing trend in the content of n-6 polyunsaturated fatty acids (PUFA), n-3 PUFA and total PUFA, but a declining trend in the n-6/n-3 ratio. Conclusion: These results demonstrate that the rubber seed oil supplemented diet effectively improved the total PUFA content in eggs without impairing the layers' production performance and the egg quality.

• Animal Bioscience
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• 제36권9호
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• pp.1414-1425
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• 2023

Objective: Long chain n-3 polyunsaturated fatty acids (PUFA) exert positive effects on human health. The long chain n-3 PUFA of pork can be increased by adding fish oil to the diet. Due to the cost and availability of fish oil an alternative source must be found. Methods: This study evaluated the effect of five dietary oils on meat quality, fatty acid composition and lipid stability. The five diets contained 1% palm oil (Control), 1% soya oil, 1% linseed oil, 1% fish oil, and 1% Echium oil, respectively. The trial consisted of 60 gilts, randomly allocated to five groups. Results: All color parameters, extractable fat content, fat free dry matter, and moisture content of the m. longissimus muscle were unaffected by dietary treatment. Consumers and a trained sensory panel could not detect a difference between the control samples and the Echium oil sample during sensory analysis. Samples containing higher levels of PUFA (soya, linseed, fish, and Echium oil) had higher levels of primary and secondary lipid oxidation products after refrigerated and frozen storage. However, these values were still well below the threshold value where off flavors can be detected. The Echium oil treatment had significantly higher levels of long chain PUFA than the linseed oil treatment, but it was still significantly lower than that of the fish oil treatment. Conclusion: Echium oil supplementation did not increase the levels of n-3 to the same extent as fish oil did. The result did however suggest that Echium oil can be used in pig diets to improve muscle long chain n-3 fatty acid content without any adverse effects on meat quality when compared to linseed, soya, and palm oil.

• 한국환경복원기술학회지
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• 제26권6호
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• pp.179-188
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• 2023

참달팽이(Koreanohadra koreana)는 환경부에서 지정한 법정보호종(멸종위기 야생생물 II급)이며, 전라남도 신안군 홍도와 하태도에서만 서식하는 한국고유종이다. 반면, 그 동안 참달팽이 지방산에 대한 연구는 진행된 바 없다. 홍도와 하태도를 대상으로 계절, 미소서식처, 지역 차이에 따른 참달팽이의 지방산 구성 변화를 비교하기 위해 분석에 사용한 표본의 개수는 총 99개였다. 실험결과 총 16가지의 지방산이 검출되었으며, 주로 식물질 먹이에서 유래되는 다중불포화지방산(PUFAs)이 53.6%로 가장 높았다. 반면, 동물성 또는 미생물에서 유래하는 단일불포화지방산(MUFAs)은 31.4%, 포화지방산(SFAs)은 15.0%로 상대적으로 적게 검출되었다. 참달팽이의 총 지방산량 변화는 PUFAs의 변화와 가장 강한 상관관계(R²=0.88, p < 0.0001)를 보였다. 계절별로 PUFAs는 봄 (13.20 mg/g)과 여름 (13.08 mg/g)이 가을 (12.06 mg/g)과 겨울 (12.40 mg/g)에 비해 많은 양이 검출되었다. 미소서식처별 PUFAs는 초지대(12.80 mg/g)에서 석회질 지대(12.48 mg/g) 보다 다소 높게 나타났다. 반면, 지역별로 홍도(12.65 mg/g)와 하태도(12.64 mg/g)는 차이가 거의 없었다. PUFAs는 참달팽이의 먹이원을 기반으로 한 서식지의 질을 추적할 수 있는 하나의 지표로서 활용가치가 높을 것으로 기대된다.

• Journal of Nutrition and Health
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• 제21권1호
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• pp.61-74
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• 1988

Ten college women were divided into 5 groups and treated in randomized block design for 5 weeks with 1 interval between treatments and subjects serving as their own controls. The experimental diets were corn oil diet as a source of n-6 linoleic acid, perilla oil diet as a source of n-3 $\alpha$-linolenic acid, and fish oil diet as a source of n-3 EPA and DHA. Dietary fat was supplied at 30% Cal and modified to give the total amount of saturated fatty acids and monoenoic acids at constant level. There was no significant effect on serum cholesterol level by different PUFA. However, on a gram-for-gram basis, there was a trend that the decrease in serum cholesterol was proportionate to the degree of fat unsaturation. On the other hand, only fish oil diet significantly decreased TG level but no significant effect on the relative proportion of TG in VLDL. The degree of hypotriglyceridemia did not corrleate with the degree of unsaturation. The relative proportion of CE in LDL was reduced by all PUFA diets but significant only by perilla oil diet. The relative amount of apoprotein in LDL was significantly reduced by n-3 PUFA. HDL-Chol content was significantly increased only in fish oil diet but no change in the relative proportion of its chemical components of HDL.

• 한국환경과학회지
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• 제22권6호
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• pp.773-777
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• 2013

This study examined the effects of cage rearing system and backyard raising system on fatty acid profile of egg in laying hens during 9 weeks. Two hundred hens, 70-wk-old, Hy-line Brown, were used in this study and fed basal diets. 100 hens, randomly collected from facility, were transferred to cage rearing system and 100 remaining hens were moved to backyard raising system. For overall period, higher unsaturated fatty acid percentages in two different rearing systems than did saturated fatty acid (SFA) were observed. In unsaturated fatty acid compositions, both rearing system showed a higher mono unsaturated fatty acid (MUFA) contents than poly unsaturated fatty acid (PUFA) contents. Egg quality traits of laying hens reared in backyard system had considerably lower contents of SFA and higher contents of MUFA compared with eggs from cage rearing system (P<0.05). In addition, eggs from cage rearing system resulted in a significantly lower n-3 contents and higher n-6:n-3 ratios and CLA contents in comparison with backyard raising system (P<0.05). However, no significant effects of two different rearing systems on PUFA, PUFA:SFA ratio, and n-6 contents were observed during the experimental period. In conclusion, this result suggests that cage rearing system and backyard raising system will play an important role in improving egg production as functional foods.

• Asian-Australasian Journal of Animal Sciences
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• 제14권12호
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• pp.1719-1723
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• 2001

The effect of slaughter weight and gender on fatty acid composition of homogenised rib samples of Hungarian Simmental (HS) and Holstein-Friesian (HF) cattle breeds was investigated. In the first experiment 22 Hungarian Simmental and 18 Holstein-Friesian cattle's meat, in the second experiment 15 females and 12 males Holstein-Friesian cattle's meat was analysed on fatty acid content. Saturated and mono- or polyunsaturated fatty acid profile did not seem to vary either by breed or by slaughter weight categories. The effect of gender, however, proved to be significant in influencing the quantity of polyunsaturated fatty acids, including linoleic and linolenic acids, as well as polyunsaturated fatty/saturated fatty acids (PUFA/SAFA) ratio. The amount of polyunsaturated fatty acids (PUFA) was higher in males than in females. Negative correlation was established between the quantity of PUFA and the amount of adipose tissue in rib samples.

• International Journal of Oral Biology
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• 제41권2호
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• pp.63-68
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• 2016

The aim of this study was to investigate the effect of n-3 polyunsaturated fatty acids (PUFAs) on eruptive movement during tooth development. Sprague-Dawley (SD) rat pups were randomly divided into two groups; control group and experimental group. The experimental group was administered daily with n-3 PUFA by intraperitoneal (IP) injection. After 10 days postpartum, rat pups were sacrificed to evaluate the effect of n-3 PUFA on eruptive tooth movement. Histological analyses were by hematoxylin-eosin (H&E) staining. Tartrate-resistant acid phosphatase (TRAP) assay was performed to compare the osteoclast distribution in the bone matrix above the developing molar teeth. Incisor teeth eruptions were noticeably observed in IP group, as compared to control group. Rat pups in IP group showed faster tooth eruption on day 8 after birth. Through histological analyses, IP group showed thinner bone matrix and more osteoclasts above the $1^{st}$ molar teeth, as compared to control group. TRAP assay showed significantly stronger stained pattern that the osteoclast above the $1^{st}$ molar teeth in IP group, as compared to control group. The results suggested that n-3 PUFA could affect osteoclastic activity involved in bony remodeling during eruptive tooth movement.