• 한국환경과학회지
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• 제27권5호
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• pp.341-344
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• 2018

This study was conducted to determine the effects of dietary bentonite supplementation on the fatty acid profiles of eggs in older laying hens. A total of 90 Hy-line Brown layers, 74 weeks of age, were confined in 6 wire cages and then assigned randomly to two groups to receive one of the two diets (3 replicates of 15 older layers each) containing 0 and 0.2% bentonite for 4 weeks. After the 4-week feeding trial, no remarkable differences in individual fatty acid, saturated fatty acid (SFA), unsaturated fatty acid (UFA), and mono unsaturated fatty acid (MUFA) levels were found. However, linoleic acid, docosahexaenoic acid, and poly unsaturated fatty acid (PUFA) and UFA/SFA ratio were influenced by 0.2% bentonite. In conclusion, supplementation with 0.2% bentonite improved the profiles of PUFA more than those of SFA, UFA, and MUFA inthe eggs of the older laying hens.

• Asian-Australasian Journal of Animal Sciences
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• 제24권6호
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• pp.757-765
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• 2011

Fatty acid composition of beef intramuscular tissue is an important trait because high proportions of mono-unsaturated fatty acid are related to favorable beef flavor. In this study, we investigated the effects of genetic factors, such as stearoyl-CoA desaturase (SCD), on beef carcass traits, including fatty acid composition, in the Hanwoo. Analysis of fatty acids in Hanwoo was performed using a breed raised in Gyeonbuk province (n = 395). Compared to the homozygote, the GA, CT, and CT genotypes of exon 5 in the SCD polymorphism showed a higher content of oleic acid (p<0.05) and higher contents of mono-unsaturated fatty acid (p<0.05) and marbling scores (p<0.05) in intramuscular fat. Results of haplotype analysis showed a significant presence of unsaturated fatty acids and marbling score in the $ht1^*ht2$ and $ht2^*ht2$ groups (p<0.05). Furthermore, haplotype effects more powerful than a single gene were also observed. These ht1 and ht2 types also showed a significant difference in unsaturated fatty acids and marbling score, affecting beef flavor in the Hanwoo groups. Therefore, it can be inferred that the ht1 and ht2 types might be valuable new markers for use in improvement of Hanwoo.

• Ocean Science Journal
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• 제42권4호
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• pp.247-254
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• 2007

Marine bacteria, actionmycetes and fungal strains were isolated from continental slope sediment of the Bay of Bengal and studied for fatty acid profile to investigate their involvement in the benthic food-web. Fifteen different saturated and unsaturated fatty acids from bacterial isolates, 14 from actinomycetes and fungal isolates were detected. The total unsaturated fatty acids in bacterial isolates ranged from 11.85 to 37.26%, while the saturated fatty acid ranged between 42.34 and 80.74%. In actinomycetes isolates, total unsaturated fatty acids varied from 27.86 to 38.85% and saturated fatty acids ranged from 35.29 to 51.25%. In fungal isolates unsaturated fatty acids ranged between 44.62 and 65.52% while saturated FA ranged from 20.80 to 46.30%. The higher percentages of unsaturated fatty acids from the microbial isolates are helpful in anticipating the active participation in the benthic food-web of Bay of Bengal.

• 생명과학회지
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• 제22권8호
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• pp.1126-1131
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• 2012

본 연구에서는 각기 다른 형태의 지방산이 ICR mice의 혈중 지질 농도에 미치는 영향을 평가하고자 하였다. 이를 위하여 8주령 수컷 ICR mice를 일반 식이섭취군(C), 10%의 트랜스 불포화 지방산 섭취군(TFA-1), 30% 트랜스 불포화 지방산 섭취군(TFA-2), 50% 트랜스 불포화 지방산 섭취군(TFA-3), 50% 포화 지방산 섭취군(SFA), 불포화 지방산 섭취군(USFA) 으로 나누어 식이 하였다. 혈중 총 콜레스테롤의 수치는 TFA-3 군과 SFA 군의 지질함량이 다른 군에 비하여 높았으며, 중성지방지수 역시 높게 나타났다. 총 콜레스테롤과 중성지방수치를 이용하여 나타낸 LDL 콜레스테롤의 경우에도 50%의 트랜스 지방산을 섭취한 군에서 포화 지방산을 섭취한 군과 유사한 결과가 나타났다. 이에 반해, 10%, 30%의 트랜스 지방산을 섭취한 군에서는 일반식이 섭취군과 비슷한 결과가 나타났다. 이는 많은 양의 트랜스 불포화지방산을 짧은 기간 동안 섭취하더라도 포화지방산을 섭취한 것과 유사한 효과를 나타낸다는 것을 의미한다.

• 한국축산식품학회지
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• 제18권4호
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• pp.332-338
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• 1998

This experiment was carried out to investigate the changes in phospholipid and glycolipid of Kaesojoo and Kaesojoo added medicinal herbs during storage(30 days) at 4$^{\circ}C$and -18$^{\circ}C$. Two dogs with 12kg live weight(♀, The Korean Jindo dog Hy-breed, 11∼12 month) were slaughtered to obtain samples. The result obtained were as follows: The saturated fatty acids found in phospholipid of Kaesojoo were palmitic acid, stearic acid, myristic acid, while the unsaturated fatty acid found in phospholipid of Kaesojoo with medicinal herbs were palmitic acid, stearic acid, arachidonic acid, while the unsaturated fatty acid were mostly oleic acid, increased during the period of storage. The saturated fatty acid found in glycolipid obtained from Kaesojoo were mostly oleic acid, linoleic acid and linolenic acid. The saturated fatty acid obtained from Kaesojoo with medicinal herbs were palmitic acid, stearic acid, while the unsaturated fatty acid were mostly oleic acid, linoleic acid and linolenic acid. The rates of changes in unsaturated and saturated fatty acid were higher at 4$^{\circ}C$ than that of -18$^{\circ}C$ during storage.

• Asian-Australasian Journal of Animal Sciences
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• 제25권7호
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• pp.913-920
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• 2012

In this study, we investigated the relationship between unsaturated fatty acids influencing beef flavor and four types of SNPs (c.280A>G, c.388G>A, c.408G>C and c.456A>G) located at exon 2, 3 and 4 of the FABP4 gene, which is a fatty acid binding protein 4 in Korean cattle (n = 513). When analyzing the relationship between single genotype, fatty acids and carcass trait, individuals of GG, GG, CC and GG genotypes that are homozygotes, had a higher content of unsaturated fatty acids and marbling scores than other genotypes (p<0.05). Then, haplotype block showed strong significant relationships not only with unsaturated fatty acids (54.73%), but also with marbling scores (5.82) in $ht1{\times}ht1$ group (p<0.05). This $ht1{\times}ht1$ group showed significant differences with unsaturated fatty acids and marbling scores that affected beef flavor in Korean cattle. Therefore, it can be inferred that the $ht1{\times}ht1$ types might be valuable new markers for use in the improvement of Korean cattle.

• Asian-Australasian Journal of Animal Sciences
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• 제14권4호
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• pp.501-506
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• 2001

This experiment was conducted to evaluate the effects of supplemental unsaturated fatty acids (UFA) on fermentation characteristics, especially on gas production, cellulose degradation and volatile fatty acid (VFA) concentration by mixed ruminal microorganisms. In order to attain this objective, unsaturated fatty acids including oleic acid (C 18:1), linoleic acid (C18:2) and arachidonic acid (C22:4) were added at varying level. Mixed ruminal microbes used in this experiment were obtained from the rumen of a cannulated Holstein cow. Medium pH values after 7 d incubation were significantly affected by type and level of unsaturated fatty acids (p<0.01). All of UFA inhibited total gas production, and especially treatment of arachidonic acid at the levels of 0.01% gave the lowest gas. production after 7 d incubation (p<0.01). Comparison of the population of protozoa revealed that UFA did not have any significant effect on the total protozoa number. The addition of UFA did not effect dry matter degradation. Volatile fatty acid (VFA) composition of the culture was influenced little by UFA, although the considerable amount of iso-type VFA were detected in UFA supplemented incubations. The ratio of acetic acids to propionic acids, however, was lower than control in all the treatments after 7 d incubation (p<0.01).

• 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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• 제14권8호
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• pp.1073-1077
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• 2001

Forty three 7-month old, Barbados Black $Belly{\times}Malin$ crossbred sheep were used for the trial. They were allotted into three treatment groups fed varying levels of oil palm (Elaeis guineensis) frond pellets and commercial sheep pellets. Treatment diets were 80% commercial pellet+20 % (% w/w) oil palm frond pellet (CON group, n=15), 50% commercial pellet+50% oil palm frond pellet (% w/w) (HAF group, n=14) and 80% oil palm frond pellet+20% (% w/w) commercial pellet (OPF group, n=14). The plasma fatty acid profiles from these animals were compared before and after 14 weeks of feeding. Results showed that total unsaturated fatty acid content in the CON group had increased by 10% (p<0.01) from the pre-treatment values. All three treatment groups had significantly different plasma n-6 and n-3 polyunsaturated fatty acid contents at the end of the trial. In fact, the CON group had significantly (p<0.01) more n-6 polyunsaturated fatty acid content compared to its own initial values, and also the values from the HAF and OPF groups. However there was a significant (p<0.01) decline in plasma n-3 polyunsaturated fatty acids in all groups. The final total unsaturated to saturated fatty acid content ratio was significantly (p<0.01) highest in the CON group, demonstrating the high plasma unsaturated fatty acid content in these animals. This study shows the plasma unsaturated fatty acids in sheep can be increased by dietary manipulation.

• 한국식품조리과학회지
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• 제13권2호
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• pp.87-91
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• 1997

방사구와 비방사구에서 채취한 달걀 난황을 배소·압착하여 얻은 난황유를 Folch법으로 정제한 후 gas chromatography로 지방산 조성을 분석한 결과는 다음과 같다. 난황유의 총지질과 중성지질의 지방산 조성은 oleic acid, palmitic acid, linoleic acid 순으로 주성분을 이루었고, 당지질은 palmitic acid, oleic acid, stearic acid, lauric acid 순으로, 인지질은 oleic acid, lauric acid, palmitic acid 순으로 주성분을 나타냈다. 포화지방산 함량은 방사구 보다 비방사구에서 약간 높았고, 포화지방산에 대한 불포화지방산의 비율(USFA/SFA)은 비방사구보다 방사구에서 높았다.