• 한국영양학회:학술대회논문집
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• 한국영양학회 2003년도 추계학술대회 및 정기총회
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• pp.142-142
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• 2003

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2000년도 추계수산관련학회 공동학술대회발표요지집
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• pp.217-218
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• 2000

최근 발암물질 등에 노출되었을 때 이들이 야기하는 발암성을 경감시킬 수 있는 항암제에 대한 연구에 많은 관심을 모으고 있다. 식물로부터 많은 항암제가 분리 동정되었으나, 이들 항암제는 미량으로 존재하면서 상당한 독성을 가지므로 이들을 산업화시키는데는 많은 문제점을 가지고 있다. 그러나 유제품으로부터 항암물질을 분리 및 동정하였다(Ha et al., 1987). (중략)

• 한국영양학회:학술대회논문집
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• 한국영양학회 2002년도 추계학술대회 및 총회
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• pp.143-143
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• 2002

• 한국임상수의학회:학술대회논문집
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• 한국임상수의학회 2008년도 춘계학술대회
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• pp.84-84
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• 2008

• 한국축산식품학회:학술대회논문집
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• 한국축산식품학회 1999년도 정기총회 및 제23차 춘계학술발표회
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• pp.200-200
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• 1999

• 한국식품영양과학회지
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• 제35권1호
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• pp.61-67
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• 2006

최근 건강기능식품에 대한 관심이 높아지면서 기능성을 나타내는 원료에 대한 평가가 이루어지고 있다. 한국인의 식습관 상 어류 섭취가 많고 이로부터 DHA, EPA와 같은 기능성 지질의 섭취도 증가하고 있는 추세에 있다. 본 논문에서는 개별인정 형으로 추진되고 있으며 항암성, 체지방 감소효과 등을 보이고 있는 CLA를 어류사료에 첨가하여 안정성이 높은 중성지질의 형태로 바꾸어 항산화효과를 평가하고자 하였다. 뱀장어 사료에 CLA 함량을 $0\%,\;0.5\%,\;1.0\%,\;2.5\%$, 및 $5.0\%$로 성형하여 순환여과식 사육장치에서 8주간 사육하였다. 사육 후 이들 시료로부터 지질을 추출하고 $37^{\circ}C$에 저장하면서 지방산조성의 변화, 지질 class의 변화, 산소 소비에 따른 중량증가, 과산화물가, 카아보닐가 등으로 항산화능을 측정하였다. 측정결과 CLA 축적량은 $0.5\%,\;1.7\%,\;3.3\%$ 및 $6.2\%$로 나타나 CLA 공급이 많을수록 축적되는 CLA량은 증가하였다. 대조구의 경우 저장 3주 후부터 불포화산의 함량이 감소하여 $13.7\%$에서 5주 후에는 $6.2\%$로 급감하였다. $0.5\%$ CLA 급이구는 저장 4주째 불포화산의 함량이 $11.8\%$, 5주째는 $7.4\%$로 감소하였으며, $1.0\%$ 및 $2.5\%$ CLA 급이구에서는 불포화산의 함량이 4주째 $15.3\%$ 및 $14.8\%$로 변화가 적었다. 중성지질의 class 조성은 $1.0\%$ 및 $2.5\%$ CLA 급이구는 저장 5주째 중성지질과 인지질의 비가 53.9:46.1 및 64.3:35.7로 낮아졌으며, 다른 구에서는 저장 4주째부터 산화가 진행되었다. 과산화물가와 카아보닐가의 변화에서도 $1.0\%$ 및 $2.5\%$ CLA 급이구가 산화에 가장 안정한 것으로 나타났다.

• Asian-Australasian Journal of Animal Sciences
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• 제19권5호
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• pp.699-704
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• 2006

Twenty-four cannulated Small-tailed Han${\times}$Poll Dorset wethers (BW $47.5{\pm}2.1kg$) were used to determine the effects of forage to concentrate ratio (40:60 vs. 70:30), monensin supplementation (0, 15 or 30 ppm, DM basis) and interactions of these two factors on cis-9, trans-11 conjugated linoleic acid (cis-9, trans-11 CLA) and trans-11 octadecenoic acid (trans11-$C_{18:1}$) concentrations in ruminal contents and plasma in sheep. The experiment was designed as a $2{\times}3$ factorial. The diet contained Chinese wild rye grass hay (Aneurolepidium Chinese), cracked corn, soybean meal, NaCl, limestone and trace mineral premix. Dietary crude fat and linoleic acid ($C_{18:2n-6}$) were adjusted with soybean oil to about 7.0% and 24.0 mg/g (DM basis), respectively. High forage diets increased (p<0.001) the concentrations of trans11-$C_{18:1}$ and cis-9, trans-11 CLA in ruminal contents and plasma. Monensin supplementation increased (p<0.001) the concentration of trans11-$C_{18:1}$ in ruminal contents, but had no effect on that of cis-9, trans-11 CLA. Concentrations of trans11-$C_{18:1}$ (p<0.019) and cis-9, trans-11 CLA (p<0.022) in plasma increased with dietary monensin levels. Interactions of forage: concentrate ratio and monensin level tended to affect the concentrations of trans11-$C_{18:1}$ (p<0.091) and $C_{18:2n-6}$ (p<0.083) in ruminal contents. Increasing forage levels increased the concentrations of trans11-$C_{18:1}$ and cis-9, trans-11 CLA in the rumen. Supplementing with monensin increased the ruminal production of trans11-$C_{18:1}$ and concentrations of trans11-$C_{18:1}$ and cis-9, trans-11 CLA in plasma.

• Asian-Australasian Journal of Animal Sciences
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• 제21권1호
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• pp.42-50
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• 2008

Twenty-four, lactating dairy cows were randomly assigned according to a Rrandomized complete block design (RCBD) to investigate the effect of sunflower oil supplementation (SFOS) with cassava hay based-diets on feed intake, digestibility of nutrients, rumen fermentation efficiency and milk production. The treatments were as follows: T1 = Control, using commercial concentrate as a supplement (CON); T2 = Concentrate with cassava hay (CHSO-0); T3 = Concentrate with cassava hay and 2.5% sunflower oil (CHSO-2.5); T4 = Concentrate with cassava hay and 5% sunflower oil (CHSO-5). The cows were offered concentrate feed at a ratio of concentrate to milk production of 1:2 and urea-treated rice straw was fed ad libitum. The results revealed that feed intake, digestibility of nutrients and ruminal pH were similar among all treatments, while ruminal NH3-N was lower (p<0.05) with SFOS. Blood urea-N (BUN) and milk urea-N (MUN) were not significantly affected by SFOS. The ruminal concentrations of volatile fatty acids were significantly different among the treatments. Sunflower oil supplementation significantly increased concentrations of unsaturated fatty acids, and ratio of unsaturated to saturated fatty acids in the milk, particularly the conjugated fatty acids, was significantly enhanced. Furthermore, production costs of treatments with sunflower oil supplementation were lower than for the control. Based on this study, SFOS in cassava hay based-diets improves rumen ecology, milk yield and milk quality, especially in terms of conjugated linoleic acids.

• Asian-Australasian Journal of Animal Sciences
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• 제18권2호
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• pp.249-254
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• 2005

The objective of this study was to investigate effects of dietary level of CLA and the duration of feeding CLAcontaining diets on reproductive performance in sows and piglet growth rate. Tallow (3% in gestation diet and 5% in lactation diet, respectively) was incorporated as a fat source in control diet, and each 50% (dietary CLA level of 0.75% in gestation diet, and 1.50% in lactation diet, respectively) or 100% (dietary CLA level of 1.50% in gestation diet, and 2.50% in lactation diet, respectively) of tallow was replaced by a commercial CLA preparation containing 50% CLA isomers. Diets containing CLA were fed either from d 15 premating to weaning or d 74 post-mating to weaning. The level of dietary CLA and feeding duration did not affect litter size. High dietary level of CLA, however, decreased piglet weights at birth (p<0.01) and tended to decrease backfat thickness of sows at weaning. Longterm feeding of CLA-containing diets decreased piglet weights at weaning (p<0.05) and backfat thickness of sows at weaning (p<0.05). CLA supplemented in sow diet was transferred to fetus and piglets during pregnancy and nursing period, respectively. CLA contents of femoral muscle of piglets were 2.08 to 2.57 mg per g of fat at birth, and 2.36 to 4.47 mg at 10 days of age in CLA groups, while CLA was not detected in the control group. In conclusion, dietary supplementation of CLA tended to lower backfat thickness of sow and piglets' weight at birth or weaning, but did not affect total litter size. Dietary CLA was transferred efficiently during prenatal and postnatal periods of time through the placenta and milk, respectively.

• Asian-Australasian Journal of Animal Sciences
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• 제23권1호
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• pp.122-130
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• 2010

Sensory analyses of pork samples from leg muscles of female pigs raised in New Zealand (n = 17) were conducted using trained and untrained Singaporean panelists. The New Zealand pigs included three dietary groups, with one diet including animal products (NZA), and two containing plant products only (NZP & NZP+), with the NZP+ diet containing a supplement (0.614%) containing conjugated linoleic acid (CLA), selenium, and vitamin E. The New Zealand pork was also compared with Indonesian pork as local reference samples (n = 6). Pork samples from the NZA group had the highest score for mutton flavour and aftertaste, and the lowest score for brothy aroma, brothy flavour, meaty flavour, lightness and juiciness by trained sensory panels. Samples from NZP and NZP+ were similar except the NZP+ group had a stronger stale flavour than the NZP group (1.34 vs. 0.57 on a 100-point scale; p<0.05). The first and second functions of a discriminant analysis based on trained-panel scores for 14 attributes accounted for 95.4% of the variance, with function 1 (83.7%) being related mainly to mutton aroma, mutton flavour and aftertaste. Based on a 20-member untrained panel, the NZA pork had the highest mutton aroma and mutton flavour intensities (p<0.01) and aroma and flavour that was less acceptable than that from the NZP group (p<0.05). The acceptability scores of Indonesian pork were not significantly different from those of New Zealand pork, but its scores for mutton aroma and mutton flavour were significantly lower than NZP. Overall acceptability was positively associated with acceptability of aroma (r = 0.906), juiciness (r = 0.888), and tenderness (r = 0.904), but negatively associated with intensities of mutton aroma (r = -0.478) and flavour (r = -0.551).