• Journal of Animal Science and Technology
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• 제49권5호
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• pp.657-666
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• 2007

본 연구에서는 caprylic acid와 cyclodextrin과의 complex(CA-CD complex)의 첨가수준이 in vitro 반추위 발효 성상과 메탄 생성에 미치는 영향을 알아보고자 하였다. CA-CD complex 무첨가구를 대조구로 설정 하였으며, 처리구로는 CA 20mg 단독 첨가구(T1), CD 830mg 단독 첨가구(T2), CA-CD complex 425mg 첨가구(T3, CA 함량 10mg), CA-CD complex 850mg 첨가구(T4, CA 함량 20mg), CA-CD complex 1700 mg 첨가구(T5, CA 함량 40mg)이며, 3반복으로 4, 8, 12시간의 배양 실험을 수행하였다. 모든 시험구에서 배양 12시간까지 pH가 지속적으로 감소하였다. 특히, 배양 8시간 후부터 T2, T3, T4, T5 처리구에서 대조구보다 유의적으로 감소하였다(P<0.05). Total VFA 농도는 대조구에 비해 T2, T3, T4, T5구들이 8시간과 12시간에서 유의적(P<0.05)으로 감소하였다. Propionate 농도는 배양 8시간에서만 다른 처리구보다 T4, T5 처리구가 유의적(P<0.05)으로 높게 나타났다. Acetate:Propionate(A/P) 비율은 모든 배양시간에서 처리구간 유의적인 차이가 없었다. 암모니아 농도는 대조구에 비해 T2, T3, T4, T5 처리구에서 배양 4시간부터 대조구보다 암모니아 농도가 유의적(P<0.05)으로 감소하였다. Total gas는 T1구에서 대조구보다 유의적(P< 0.05)인 감소가 있었으나, T2, T3, T4, T5 처리구에서는 대조구에 비하여 12시간에서 유의적(P<0.05)으로 증가하였다. Total gas 발생량에 대한 메탄 비율(%)은 12시간 배양시간에서 대조구는 3.4%이었지만, 메탄 발생량이 가장 적었던 T1구는 2.8%, 메탄 발생량이 가장 많았던 T2구는 5.1%, 그리고 T3, T4, T5구는 평균 2.7%로 T1구와 통계적 차이가 없었다. 따라서 CA-CD complex를 이용하면, 반추위내 발효에 부정적 영향 없이 메탄을 감소시킬 수 있을 것으로 기대된다.

• 한국수정란이식학회지
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• 제15권2호
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• pp.137-145
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• 2000

To investigate fatty acid constituents and relative compositions in the fluid of the follicles, oviducts, uterine ho군 and uterine body in sows, the fluids of the reproductive tract were analyzed using Gas chromatography. The samples were taken from various reproductive tract of 21 sows slaughtered. 1. Caprylic acid(C8: 0), capric acid(C10:0), lauric acid(C12:0), myristic acid(C14:0), palmitic acid(C16:0), plamitolele acid(C16:1), stearic acid(C18:0), oleic acid(C18:1), linoleic acid(C18:2) and arachidonic acid(C20:4) were found in the reproductive tracts of the sows, which made 10 kinds of fatty acid intotal. 2. Two kinds of polyunsaturated fatty acids, linoleic acid and archidonic acid were found inthe reproductive tracts. 3. Palmitic acid among saturated fatty acids and oleic acid among unsaturated fatty acids were the hihgest level in all of the reproductive tracts. 4. Palmitic acid, oleic acid and stearic acid showed higher rate with 44.89%, 23.69% and 14.36%, respectively, and lauric acid, capric acid, palmitoleic acid, arachidonic acid ad myristic acid showed lower rate with 0.62%, 1.13%, 1.65%, 1.97% and 2.24%, respectively in the reproductive fluid. 5. The highest level of arachidonic acid was found in the uterine horn. 6. The sum of the palmitic acid and oleic acid were 66.91%, 70.41%, 66.14% and 73.36% in the fluid of follicle, oviduct, uterine horn and uterine body, respectively. 7. The relative composition of arachidonic acid was higher during the follicular stage than during the luteal phase in the fluid of oviduct and uterine. 8. The long chain fatty acids such as the palmitic acid, stearic acid, oleic acid and linoleic acid showed higher relative compositions during the follicular phase(93.18%∼96.83%) than during the luteal phase(82.56%∼88.37%). 9. Caprylic acid, luric acid and palmitoleic acid were undetected in the fluid of all of the reproductive tracts during the follicular phase. Low relative compositions of capric acid, myristic acid andarachidonic acid were found during the follicular phase, while the low relative compositions (<5%)of capric acid, lauric acid, myristic acid, plamitoleic acid and arachidonic acid were found during the luteal phase.

• Applied Biological Chemistry
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• 제44권1호
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• pp.20-23
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• 2001

산업적으로 활용성이 높은 특이 지방산을 탐색하기 위하여 8종의 국내 자원식물을 재료로 하여 지방산 조성을 조사한 결과 붓꽃(Iris tectorum) 등 3가지 식물에서 myristic acid(14 : 0)와 lauric acid(12 : 0)등의 중쇄지방산이 함유되어 있음을 확인하였다. 특히 붓꽃에는 myristic acid가 전체 지방산의 75.9%를 차지하였다. 독일붓꽃(Iris germanica)에는 myristic acid와 lauric acid가 전체 지방산의 57%와 15.5% 씩 함유되어 있었다. 꽃창포(Iris ensata) 뿌리에는 lauric acid와 capric acid(10 : 0)가 각각 10.7%와 9.5% 함유되어있었으나 회향(Foeniculum vulgare)과 사상자(Torilis Japonica)의 종실에는 전체 지방산(mg/g dry wt)이 각각 193.3 mg/g과 128.2 mg/g의 높은 함량을 나타내었다. 붓꽃의 부위별 지방산 조성에서는 종실에 linoleic acid(18 : 2)가 64.5%, 잎에 ${\alpha}-linolenic$ acid(18 : 3)가 48.9% 그리고 곁뿌리(lateral root)에는 caprylic acid(8 : 0)와 capric acid가 각각 9.5%와 8.6%씩 함유되어 있었으며 붓꽃과 독일붓꽃의 미숙종자에는 myristic acid가 각각 10.8%와 15.6% 함유되었다.

• Applied Biological Chemistry
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• 제38권5호
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• pp.478-483
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• 1995

한국산 쌀(일반계 일품벼)로부터 돌연변이 억제물질의 구성성분을 확인할 목적으로 methanol 추출물을 용매분획 및 column chromatography하여 활성 spot을 분리하고 정성 분석과 기기분석을 수행하였다. Ether, ethylacetate, butanol 및 수용성 용매 획분 가운데 ether 획분의 억제활성이 가장 높았으며 silica gel column chromatography를 시행하여 성분을 분리하였을 경우 methanol추출물의 억제활성이 80% 이상으로 나타났던 결과와 비교하여 분리가 진행됨에 따라 억제활성은 $0{\sim}30%$로 감소하였다. 활성 물질을 정성분석한 결과 ferric chloride, 2,7-dichlorofluorescein, antimony pentachloride, phosphomolybdic acid, bromothymol blue, rhodamin 6G등의 시약에서는 양성을, ninhydrin, Bial's orcinol 시약에서는 음성을 나타내어 억제활성 물질은 페놀성 화합물과 지질성분인 것으로 조사되었다. 분리된 활성획분을 GC/Mass로 확인한 결과 o-hydroxy benzyl alcohol (saligenin), octanoic acid(caprylic acid), 9,12-cis-octadecadienoic acid(linoleic acid), 11-cis-octadecenoic acid(oleic acid), hexadecanoic acid(palmitic acid), 1H-indole-2-carboxylic acid, 및 1,2-benzenedicarxylic acid(phthalate)가 주요 구성성분인 것으로 분석되었으며 이들 성분들의 억제활성은 표준시약을 사용한 항변이원성 시험에서 재확인되었다.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 제35회 춘계학술대회
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• pp.130-134
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• 2002

Polyol esters were synthesized by condensation reaction of polyols (PE and DIPE) and linear acids such as valeric acid, caproic acid, heptylic acid and caprylic acid. The structures of polyol esters were confirmed by gas chromatography. Hot tube test was used to measure thermal stability of polyol esters and its thermal properties depended on the structure of acid moiety contained in polyol esters.

• Current Research on Agriculture and Life Sciences
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• 제30권1호
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• pp.35-39
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• 2012

Sea-buckthorn fruits (Hippophae rhamnoides L.) are used in Mongolia as traditional medicine due to the health-benefits associated with its bioactive components. The purpose of this study was to investigate the chemical composition of Mongolian sea-buckthorn fruits. In terms of proximate composition, crude fat content was the highest, whereas its crude ash content was the lowest. In organic acid contents, malic acid content ($6.30{\pm}0.005$ mg/g) was the highest. Free sugars were composed of sucrose, xylose, glucose and mannitol. Vitamin C and carotenoid content were 320 mg/100 g and 715.25 mg/100 g, respectively. The major fatty acids were palmitic (C16:0), palmitoleic (C16:1), caprylic (C8:0) and linoleic (C18:2) acid.

• Tribology and Lubricants
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• 제18권5호
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• pp.319-323
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• 2002

Polyol esters were synthesized by condensation reaction of polyols (PE and DiPE) and linear acids such as valeric acid, caproic acid, heptylic acid and caprylic acid. The structures of polyol esters were confirmed by gas chromatography. Hot tube test was used test was used to measure thermal stability of polyol esters and its thermal properties depended on the structure of acid moiety contained in polyol esters.

• 미생물학회지
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• 제4권2호
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• pp.11-14
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• 1966

The deterioration of cellulosic materials due to the growth of mildew causes enormous loss to us. It is, therefore, necessary to give adequate protectional treatment against mildew spoilage on cellulosic materials. In this study, fourteen chemicals were treated to the strain of Chaetomium globosum A.T.C.C., then phenyl mercuric acetate (P.M.A) was proved to be a most effective fungicide out of various chemicals. Another chemicals, such as Na-pentachlorophenolate, tuget, $\alpha$-naphthol, caprylic acid and orthocidc were also proved to be effective mildew-proofing agents.

• Asian-Australasian Journal of Animal Sciences
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• 제14권7호
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• pp.941-946
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• 2001

The effects of various concentrations of saturated fatty acids (SFA; caprylic, capric and stearic acids) on the growth of the anaerobic fungus, Neocallimastix frontalis C5-1 isolated from the rumen of a Korean native goat were investigated. At higher concentrations of fatty acids (0.1%, w/v), the addition of SFA strongly decreased filter paper (FP) cellulose digestion and polysaccharide-degrading enzyme activity. The sensitivity of the rumen anaerobic fungus to the added fatty acids increased in the following order: caprylic ($C_{8:0}$)>capric($C_{10:0}$)>stearic($C_{18:0}$) acid, although stearic acid had no significant (p<0.05) inhibitory effects at any of the concentrations tested. However, the addition of SFA at lower concentrations (0.01 and 0.001% levels), did not inhibit FP cellulose degradation and enzyme activity. Furthermore, although these parameters were slightly stimulated by the addition of SFA, they were not statistically different from control values. This is the first report examining the effects of fatty acids on anaerobic gut fungi. We found that the lower levels of fatty acids used in this experiment were able to stimulate the growth and specific enzyme activities of rumen anaerobic fungi, whereas the higher levels of fatty acids were inhibitory with respect to fungal cellulolysis.

• 한국식품과학회지
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• 제32권4호
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• pp.949-958
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• 2000

국내 식물 150종과 인도네시아 식물 82종의 항균활성을 검색하였다. 각 시료의 70% ethanol 추출물을 사용하여, 세균류인 Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa 및 효모인 Candida albicans, 사상균인 Aspergillus niger를 대상으로 측정하였다. 검색 결과, 국내산 17종과 인도네시아산 18종이 비교적 항균활성이 좋았으며, 이중 강황, 소목, 육두구, 익지인, 죽엽, 초두구 등과 asam, bolong-bolong, clove, gambir, klembak, pasak bumi 등이 우수한 항균력을 나타내었다. 가장 항균력이 우수한 육두구(Myristica fragrans)와 bolong-bolong(Melaleuca leucadendra)의 주 활성 분획을 분석한 결과, 육두구의 주 항균성분은 limonene과 caprylic acid로, Bolong-bolong의 주 항균성분은 ${\alpha}-terpineol$로 나타났다.