• 대한한방종양학회지
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• 제7권1호
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• pp.99-107
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• 2001

In the present studies, decursinol angelate, decursin isolated from Angelica gignatis radix and oil fraction of Cnidii rhizoma was analyzed by normal phase HPLC and GC/MS respectively. The standardized water extracts of Angelica gignatis radix, Cnidii rhizoma and its complex named Gung-gui-tang was tested the anti mutagenic effects by in vitro genotoxicity using Salmonella reversion assay (Ames test) and micronucleus test in chinese hamster ovary(CHO) cells. Angelica gignatis radix, Cnidii rhizoma and Gung-gui-tang was not exhibited the antimutagenic effects in the Salmonella reversion assays with or without metabolic activation. However, the micronucleus test assays, Angelica gignatis radix and Gung-gui-tang was showed the antimutagenic effects significantly. The maximum inhibition observed with Gung-gui-tang was reduced by 59% in the micronucleus test without metabolic activation. In this paper, results are presented on the availability of potential antimutagenic activity of the water extracts of Gung-gui-tang.

• 한국식품영양과학회지
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• 제32권8호
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• pp.1200-1205
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• 2003

연속식 반응기에서 sn-1,3위치 특이성을 가지는 Rhizomucor miehei lipase(Lipozyme RM IM)를 사용하여 CLA를 함유한 재구성지질을 합성하였다. 옥수수유에 CLA를 transesterification 하기 위한 반응 조건은 연동 펌프의 유속, 반응온도 및 기질의 몰 비율이었다. 연동 펌프의 유속을 변수로 한 실험에서는 유속 1 mL/min, 반응온도 55$^{\circ}C$ 및 1:3 기질몰 비율일 때 재구성지질 중 최대 CLA함량이 10.26 ㏖%을 보였으며, 반응온도를 변수로 한 반응에서는 반응온도가 $65^{\circ}C$일 때 최대 CLA함량 17.33 ㏖%을 나타냈다. 또한 반응 기질의 몰 비율을 변수로 한 재구성지질 합성에서는 1:5몰 비율에서 최대 CLA 함량 17.50 ㏖%을 보였다. Pancreatic lipase analysis 통하여 재구성 지질의 sn-1,3과 sn-2 위치 지방산 조성을 분석하였고 재구성지질의 불포화도를 측정하기 위하여 요오드 값을 측정한 결과 유속 1 mL/min, 반응 온도 55$^{\circ}C$, 몰 비율 1:5 조건에서 120의 실험 조건 내에서 가장 큰 요오드 값을 나타내었다. 한편 각각의 재구성지질 HPLC 분석 결과 99%의 TAG와 1% 이내의 DAG와 MAG가 분석되었다.

• 한국식품영양과학회지
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• 제34권7호
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• pp.1064-1070
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• 2005

본 연구에서는 국내에서 소비되는 일부 상응 식품의 비타민 E 함량을 측정하고자 하였다. 각 식품군들의 비타민 E는 검화벙법 또는 직접용매 추출법을 이용하여 추출하였으며 이를 순상 HPLC를 통하여 분리, 정량하였다. 육류에선 장조림이 1.08 $\alpha-TE$가장 높았으며, 어패류는 마른 오징어가 4.69 $\alpha-TE$로 높게 분석되었다. 해조류는 조미김이 $5.70\;\alpha-TE$로 가장 높은 값을 나타내었다. 유제품은 분유에서 $3.17\;\alpha-TE$, 두류에선 서리태가 $1.52\;\alpha-TE$로 가장 높은 값으로 나타났고, 견과류에선 해바라기씨가 $17.99\;\alpha-TE$노 가장 높은 수치를 보였다 조리가공식품류는 라면이 $1.96\;\alpha-TE$로 가장 높았으며, 전통가공 식품류에서는 고추장이 $3.48\;\alpha-TE$로 가장 높은 분석치를 나타내었다. 본 논문에서 분석된 자료는 식품 내 비타민 E 함량 분석을 통한 표준화된 영양성분표의 기반확립에 도움이 되리라고 생각한다.

• Biotechnology and Bioprocess Engineering:BBE
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• 제5권2호
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• pp.136-140
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• 2000

A sensitive and quantiative method for the structural analysis of oligosaccharide was established for the glycoform analysis of glconproproteins. Inthis study, n-linked oligosaccharides of human IgG and bovine transferin were analyzed for the evaluation of the methydrate moiety ofthe method. Chrbohydrate moiety of glycoprotein was relased by hydrazinolysis and purified by paper chromatography. The oligosaccharides were labeled with a fluorescent bye, 2-aminobenzamide, for the enhancement of detection sensitivity. sialylated (acidic) oligosaccharides were separated from neutral oligosaccharide by employing a strong anion-exchange column(MonoQ) followed by the treatment with sialidase. Enzymatically desiayated fractions and neutral fractions of oligosaccharides were applied to normal-phase HPLC to resolve the peaks according to glucose unit (GU). The structure of separated molecules was further determined by sequential digestion with exoglycosidases. As a result, disialylated biantennary complextype oligosaccharide was found to be a major sugar chain in bovine transferrin (63%). In human IgG, core fucosylated asialobiantennary complex oligosaccharides were dominant. These results coincided well with reported results.

• Food Science and Biotechnology
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• 제15권2호
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• pp.183-188
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• 2006

The tocopherol and tocotrienol contents of 39 vegetable oils, margarines, butters, and peanut butters typically consumed in the Korea diet were determined by direct solvent extraction method followed by normal phase liquid chromatography. All samples were locally obtained in the Cheongju area in 2003 and 2004. The study examined data on 19 vegetable oils, 10 margarines, 6 butters, and 4 peanut butters. ${\gamma}$-Tocopherol (${\gamma}$-T) and ${\alpha}$-tocopherol (${\alpha}$-T) were detectable in all products except butters and were usually present in the vitamin E form in greater quantity than the other isomers. Usually, ${\gamma}$-T content was higher than ${\alpha}$-T content in many samples. Tocotrienols were measurable in some samples but usually at levels less than the corresponding tocopherols. Three analytical method validation parameters, accuracy, precision, and specificity, were calculated to ensure the method's validity and were all confirmed to be reliable and satisfactory.

• Journal of Nutrition and Health
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• 제30권4호
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• pp.425-433
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• 1997

Levels and distribution of five B-6 vitamers(PMP, PM, PLP, PL, and PN) and pyridoxine $\beta$-glucoside conjugates(PN-glucoside) were examined in milk of American women who received supplements of 2.5 or 10mg PN HCl/d and of unsupplemented Egyptian women during the first six months of lactation. B-6 vitamer and PN-glucoside levels in human milk were determined by reverse-phase HPLC. Pyridoxal(PL), which has been reported to be the most rapidly absorbed form of vitamin B-6 and may facilitate bioavailability, was the predominant vitamer in human milk of all three groups. Pyridoxal made up 72% of total vitamin B-6 for the 2.5mg supplemented group, 76% for the 10mg group, and 59% for the Egyptian group. Level and Percent PL were significantly lower for Egyptian women. Mean growth of the two American groups was similar to each other and within the normal range of the NCHS reference, however, Egyptian infants showed growth faltering at 6 months. The Percent of PN-glucoside, a less bioavailable form of vitamin B-6 in humans was 1% in milk of American women and was 11% in Egyptian women and these values were significantly different. for Egyptian women, total vitamin B-6 levels in breast milk correlated Positively with animal protein intake(r=0.91) and percent PN-glucosides(r=0.53) and negatively with plant protein intake(r=-0.55). These findings showed that high plant protein intake was associated with low concentrations of PL and total vitamin B-6 in human milk.

• 한국축산식품학회지
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• 제31권2호
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• pp.191-199
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• 2011

The objective of this study was to develop a method to simultaneously quantify vitamins A and E in infant formula. To determine the vitamin A and E content, vitamin A and four different vitamin E isomers (${\alpha}$-, ${\beta}$-, ${\gamma}$-, and ${\delta}$-tocopherol) were separated by high performance liquid chromatography with a photodiode array detector using a Develosil RPAQUEOUS RP-$C_{30}$ column ($4.6{\times}250$ mm, 5 ${\mu}M$). The vitamin A and E contents in the certified reference material determined using this method were within the certified range of standard values. The limits of detection (LODs) and limits of quantitation (LOQs) for vitamin A were 0.02 and 0.06 ${\mu}g/L$, respectively. LODs and LOQs for the vitamin E isomers ranged from 0.20 to 0.55 and from 0.67 to 1.81 ${\mu}g/L$, respectively. Linear analyses indicated that the square of the correlation coefficient for the vitamin A and E isomers was 0.9997-0.9999. The recovery of vitamins ranged from 96.69 to 97.79%. The results demonstrate that this novel method could be used to reliably analyze vitamin A and E content in infant formula.

• 한국식품영양과학회지
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• 제34권7호
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• pp.1052-1058
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• 2005

미세조류(microalgae)인 Schizochytrium sp.로부터 유래된 조류유(250 g)와 식물성 유지인 대두유(250 g)의 혼합 유지를 기질로 하고, sn-1,3 위치에 특이적으로 작용하는 Lipozyme RM IM(Rhizomucor miehei, EC 3.1.1.3)을 이용한 interesterification에 의해 회분식 반응기$(65^{\circ}C,\;300 rpm,\;15hr)$에서 재구성 지질을 합성하였다. 합성 된 재구성 지질의 주요 지방산 조성은 DHA$(15.7\;mol\%)$와 linoleic acid$(31.1\;mol\%)$, palmitic acid$(20.2\;mol\%)$, oleic acid$(13.5\;mol\%)$ 및 $EPA(6.6\;mol\%)$로 분석되었으며, linoleic aicd와 DHA가 sn-2 위치에서 높은 함량을 차지하였다. Normal-phase HPLC 분석결과 재구성지질은 $87.1\;area\%$의 TAG와 $12.1\;area\%$의 DAG 형태와 같은 중성지질로 구성되어 있었다. Reversed-phase HPLC 분석 결과 재구성 지질의 $PN=20\~22(10.3\;area\%),\;PN=24\~32(53.1\;area\%)$ 및 $PN=36\~48(36.6\;area\%)$ peaks내에 각각 PN=20, PN=22, PN=28, PN=30, PN=34, PN=38, PN=42를 가지고 재구성 지 질 함량의 약 $50.5\;area\%$를 차지하며 반응기질과 구별된 새로운 peaks가 합성에 의해 생성되었음을 확인하였다 재구성지질의 요오드가는 고도의 불포화도를 가지는 조류유(274.0)보다 약 $25\%$ 낮아진 206.7을 나타내었으며, 분자량을 설명하는 비누화 값이 183.8, 산가는 반응기질과 같은 0.3 이하의 측정값을 나타내었다. 재구성지질의 Hunter color $L^{\ast}(\pm\;lightness/darkness)$ 값은 13.8로 측정되었으며, $b^{\ast}(\pm,\;yellowness/blueness)$ 값은 13.8로 측정되었으며, $b^{\ast}(\pm,\;yellowness/blueness)$ 값은 반응기질보다 유의적으로 가장 높은 55.1을 나타내었다(p<0.05).

• Nutritional Sciences
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• 제1권1호
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• pp.61-69
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• 1998

Five hundred and seventy-eight healthy subjects (351 men and 227 women) with a mean age of 44.8 years (45.2 for men, 44.3 for women) participated in this study. The serum concentrations of $\alpha$-tocopherol, \beta$-carotene, $\alpha$-carotene, zeaxanthin + lutein, cryptoxanthin, lycopene and retinol of normal Koreans were measured, and their relation to gender, age, BMI, alcohol consumption, cigarette smoking, and menopausal status were evaluated. The concentrations of $\alpha$-tocopherol, carotenoids and retinol in serum were measured simultaneously by reverse phase HPLC (multi-wavelength, gradient and computerized automatic system). Average serum levels of $\alpha$-tocopherol, \beta$-carotene and retinol were 10.1$\pm$0.41\mu$g/dl, 33.1$\pm$1.24\mu$g/dl, and 82.0$\pm$1.63\mu$g/dl for men and 11.1$\pm$0.74\mu$g/ml, 48.1$\pm$1.60\mu$g/dl and 64.5$\pm$1.96\mu$g/dl for women, respectively, Serum concentrations of $\alpha$-tocopheol \beta$-carotene, $\alpha$-carotene, cryptoxanthin and lycopene appeared to be higher in women than in men. The serum concentrations of zeaxanthin + lutein increased with the increase in age of men and those of $\alpha$-carotene and \beta$-carotene increased with the increase in age of women. For men, current smokers showed significantly lower serum concentrations of \beta$-carotene and $\alpha$-carotene than ex-smokers (p <0.05) . Current drinkers also showed significantly lower serum \beta$-carotene and zeaxanthin + lutein concentrations than ex-drinkers. For women, current smokers showed significantly love. serum concentrations of zeaxanthin+lutein and cryptoxanthin than ex-smokes (p<0.05). Men with BMI$\geq$24 showed significantly lower serum concentrations of \beta$-carotene, $\alpha$-carotene, lycopene and cryptoxanthin than men with BMI < 20. The mean concentrations of $\alpha$-tocopherol, \beta$-carotene, $\alpha$-carotene and lycopene far postmenopausal women were higher than those for premenopausal women (p<0.05). In conclusion, there were obvious differences in serum $\alpha$-tocopherol and carotenoids levels depending on gender, age, cigarette-smoking habits, alcohol consumption, BMI and menopausal status. further studies are required to establish the normal levels of these vitamins for children and the elderly and to elucidate their roles in different disease states.

• 한국환경농학회지
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• 제15권2호
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• pp.167-178
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• 1996

전보에서 대두(大豆)와 벼의 현탁배양세포(懸濁培養細胞)에서 생성된 PCP의 주요 수용성대사물은 PCP를 비롯한 여러 종류의 염화페놀과 glucose간 ${\beta}-linkage$로 연결된 ${\beta}-glucoside$ 구조를 가질 것으로 추정한 바 있다. 본 연구에서는 conjugates를 가수분해시키지 않는 조건에서 기기적인 방법으로 그 구조를 확인하고자 하였다. Acetyl화(化) 한 glucose conjugates는 aglycones 분석에서 예상한 대로 3종류 이상이 존재하는 것으로 확인할 수 있었으며, 충분히 정제한 각각의 acetyl화(化) 대사물을 FAB-MS로 분석한 결과 분자량과 aglycones part와 관련된 특징적 spectral data 등 conjugates 구조 확인에 필수적인 정보를 얻을 수 있었다. 이러한 구조적 정보와 지금까지의 연구 결과, 즉 현탁배양초기에 생성된 PCP의 glucose conjugates는 ${\beta}-glucosidase$에 의해 특징적으로 가수분해되고, aglycones이 PCP 외에도 tetrachlorophenol 및 tetrachlorocatechol 등이라는 사실을 종합할 때 현탁배양에서 생성된 conjugates는 주로 pentachlorophenyl ${\beta}-D-glucopyranoside$, tetrachlorophenyl ${\beta}-D-gluco$ pyranoside 및 2-hydroxy-3,4,5,6-tetrachlorophenyl ${\beta}-D-glucopyranoside$인 것으로 확인할 수 있었다.