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        검색결과 19

        1.
        2014.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        To assess the health risk for benzo(a)pyrene by the intake of edible oils, 288 cases of edible oils collected from food markets were analysed using the high performance liquid chromatography with fluorescence detector. The levels of benzo(a)pyrene were from non-detection to 4.78 μg/kg, and the average was 0.11 μg/kg. The chronic daily exposures of benzo(a)pyrene for total population group and consumer-only group were estimated using the food consumption data in the fifth Korea National Health and Nutrition Examination Survey in 2011. The estimated daily intake of benzo(a)pyrene was 4.26 × 10−3 ng/kg b.w./day for total population group and 7.64 × 10−3 ng/kg b.w./day for consumer-only group. The MOE (margin of exposure) of benzo(a)pyrene for total population group and consumer-only group was 7.28 × 107~1.74 × 108 and 3.95 × 107~9.42 × 107, respectively. Accordingly, the health risk from benzo(a)pyrene caused by the intake of edible oils was considered as a very low level.
        4,000원
        2.
        2013.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        퍼플루오르옥탄설포네이트를 LC/MS/MS를 이용하여 분석한 결과 분석 대상물질의 고유한 스팩트럼을 얻어 정량 하여 머므름 시간은 4.33분이었으며 상관계수(R2)은 0.9998 로 양호한 직선상의 그래프를 얻을 수 있었다. 퍼플루오르옥탄설포네이트에 대한 분석법의 회수율은 99.84%로 전반적으로 좋은 회수율을 보였으며 또한 이 연구에 적용되기에 충분한 정밀도와 정확도를 가지고 있음을 확인할 수 있었다. 퍼플루오르옥탄설포네이트 정량한계 및 검출한계 는 0.03, 0.009 ug/L이었다. 따라서 식품 용기포장재에서의 분석에 적용이 가능하였다.
        4,000원
        3.
        2013.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        소염·진통 의약품 성분인 beclomethasone, dexamethasone, prednisolone, ketoprofen, phenylbutazone 5종에 대 한 동시분석을 위해 LC-MS/MS 분석 조건 중 MRM 방식 으로 각 성분의 MS 분석 최적조건을 결정하고, 정량이온 으로 beclomethasone 409.1/391.0, dexamethasone은 393.1/ 372.9, prednisolone은 361.0/343.1, ketoprofen은 255.0/209.0, phenylbutazone은 309.1/160.1 을 분석하였다. 혼합표준용 액을 기울기용매 조건으로 이동상 A(0.1% 개미산), B(0.1% 개미산을 함유한 아세토니트릴)를 이용하여 17분 동안 분 석한 결과, prednisolone (tR: 7.34 min), dexamethasone (tR: 7.73 min), beclomethasone (tR: 7.82 min), phenylbutazone (tR: 8.31 min), ketoprofen (tR: 9.24 min) 순서로 검출되었 다. 5종 성분 모두 약 2-100 ng/mL 농도 수준의 검정곡선 에서 R2 값이 0.999 이상의 우수한 직선성을 나타내었고, prednisolone을 제외한 4종 성분의 검출한계는 0.4-0.9 ng/ mL, 정량한계는 0.81-2.22 ng/mL 였으며, prednisolone은 그보다 다소 높은 4.60, 11.46 ng/mL 이었다. 환제품의 기 타가공품 공시료에 5종 성분 혼합표준용액을 최종농도가 5, 20, 50 ng/mL 이 되도록 직접 첨가하여 분석한 결과, 모든 농도에서 80% 이상의 우수한 회수율을 얻을 수 있 었고, 일내 일간 반복 분석의 상대표준편차(%)를 통해 모 든 성분에서 비교적 재현성 있는 결과가 나타났다. 실제 인터넷 상에서 유통중인 식품에 이 분석법을 적용한 결과 모든 제품에서 검출되진 않았으나, 소비자들의 건강상 위 해를 끼칠 수 있는 이들 성분의 동시분석법을 활용한 지 속적인 모니터링이 필요한 실정이다.
        4,000원
        4.
        2013.09 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        The children of daycare center are sensitive to indoor environmental pollution. This study was a preliminary investigation for improving the environmental and healthy quality of daycare centers. The sampling of sites in daycare centers was undertaken three times such as day-morning (10:00-12:00), afternoon (16:00-20:00), following dawn (04:00-08:00)-at 21 daycare centers located in Seoul, Korea from April, 2012 to July, 2012. The mean concentrations of TVOC were 255.2, 217.0, and 439.4 μg/m3 at morning, afternoon, and following dawn, respectively. The daycare center indoor/outdoor ratios on the most targeted volatile organic compounds were above 1.0 except that for carbon tetrachloride, which was almost 1.0. Significant correlations (p<0.01) were observed between indoor and outdoor carbon tetrachloride, which implies that indoor carbon tetrachloride could be largely accounted for by outdoor sources. The other targeted indoor volatile organic compounds such as benzene, toluene, ethylbenzene, styrene, xylenes, chloroform showed no significant correlations with that of outdoor.
        4,600원
        5.
        2012.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of this study is investigation of contamination levels and assessment of health risk effects of heavy metals in herbal pills. 31 Items and 93 samples were obtained for this investigation from major herbal medicine producing areas, herbal markets and on-line supermarkets from Jan to Jun in 2010. Inductively coupled plasma mass spectrometer method was conducted for the quantitative analysis of Pb, Cd and As. In addition, the mercury analyzer system was conducted for that of Hg without sample digestion. The average contents of heavy metals in samples were as follows : 0.87 mg/kg for Pb, 0.08 mg/kg for Cd, 2.87 mg/kg for As and 0.16 mg/kg for Hg, respectively. In addition, the average contents of heavy metals in different parts of plants, including cortex, fructus, herba, radix, seed, algae and others were 0.63 mg/kg, 3.94 mg/kg, 1.42 mg/kg, 1.05 mg/kg, 0.16 mg/kg, 22.31 mg/kg and 10.17 mg/kg, respectively. After the estimations of dietary exposure, the acceptable daily intake (ADI), the average daily dose (ADD), the provisional tolerable weekly intake (PTWI) and the relative hazard of heavy metals were evaluated. As the results, the relative hazards compared to PTWI in samples were below the recommended standard of JECFA as Pb 3.1%, Cd 0.9%, Hg 0.5%. Cancer risks through slope factor (SF) by Ministry of Environment Republic Korea and Environmental Protection Agency was 4.24 × 10−7 for Pb and 3.38 × 10−4 for As (assuming that the total arsenic content was equal to the inorganic arsenic). Based on our results, possible Pb-induced cancer risks in herbal pills according to parts used including cortex, fructus, herba, radix, seed, algae and others were 1.95 × 10−7, 1.45 × 10−6, 2.14 × 10−7, 6.27 × 10−7, 1.99 × 10−8, 3.61 × 10−7 and 9.64 × 10−8, respectively. Possible As-induced cancer risks in herbal pills by parts used including cortex, fructus, herba, radix, seed, algae and others were 1.54 × 10−5, 7.24 × 10−5, 1.23 × 10−4, 2.02 × 10−5, 3.25 × 10−6, 2.18 × 10−3 and 5.67 × 10−6 respectively. Taken together, these results indicate that the majority of samples except for some samples with relative high contents of heavy metals were safe.
        4,500원
        6.
        2012.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was performed to investigate the pesticide residue of commercial medicinal plants used for food materials in the Seoul area. Multi class pesticide multiresidue methods in Korea Food Code was used to analyze 100 pesticides. Analyzed samples were 261 cases(domestic 201, imported 60), detection rate was 19.2%(domestic 20.9%, imports 13.3%). 17 pesticides were detected in fruit(chinese matrimony vine, jujube, rubus coreanus, japanese cornlian cherry, schizandra, tangerine peel), and root(cnidium, licorice, astragalus). Pesticide over Maximum Residue Limits were detected in jujube, cnidium. Frequently detected pesticides were cypermethrin, chlorpyrifos, cyhalothrin, fenvalerate, bifenthrin. More than 50% of the sample were detected two or more pesticides at the same time. Because of the variety and increase of pesticide detection in medicinal roots and fruits, continued monitoring and safety management is required.
        4,000원
        7.
        2011.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The levels of migration of 1-hexene and 1-octene residues in PE (polyethylene) products were analyzed by Headspace gaschromatography (HSGC). A total of 21 samples were including lap, polyglove, zipper bag and ect. The samples were eluted with distilled water, 4% acetic acid, 20% ethanol and n-heptan. The limit of detection (LOD) was 0.06 mg/L ~ 0.30 mg/L and limit of quantitation (LOQ) was 0.21 mg/L ~ 1.01 mg/L, respectively. But beacause of the high volatile, n-heptan elution was not detected 1-hexene and 1-octene standard. 1- hexene and 1-octene were not detected in the sample which eluted with simulant at 60℃, 30min. Microwave for 1 minute also treated sample and direct heated at 100℃ wthiout simulant were not detected.
        4,000원
        8.
        2011.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was done to analyze the contents of minerals and vitamins to compare the measured values of minerals, vitamins with labeled values of them in food labeling and to investigate the ratio of measured values to labeled values in 437 specimen with minerals and vitamins - fortified commercial beverages and liquid teas. Content of calcium and sodium in samples after microwave digestion was analyzed with an ICP-OES (Inductively Coupled Plasma Optical Emission Spectrometer) and vitamins were determined using by HPLC (High Performance Liquid Chromatography). The measured values of calcium were ranged 80.3~142.6% of the labeled values in 21 samples composed calcium - fortified commercial beverages and liquid teas. In case of sodium, measured values were investigated 33.9~48.5% of the labeled values in 21 sports beverages. The measured values of vitamin C, vitamin B2and niacin were ranged 99.7~2003.6, 81.1~336.7, 90.7~393.2% of the labeled values in vitamins - fortified commercial beverages and liquid teas, 57, 12, 11 samples. To support achievement of the accurate nutrition label, there must be program and initiatives for better understanding and guidances on food labelling and nutrition for food manufacture.
        4,000원
        9.
        2011.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of this study was to analyze contents of trans fatty acid and cholesterol of bakery products (bread: 17, pastry: 20, and whipping cream cake: 17) sold at retail in Seoul area. The average values of crude fat contents in bakery products were as follows [mean (minimum-maximum), %)]; bread 6.46 (3.51~8.69), pastry 16.23 (3.55~25.56), and whipping cream cake 16.26 (8.61~31.58). Palmitic acid was the most abundant fatty acid in these products. The average values of saturated fat (SFA) contents and unsaturated fat acid (USFA) contents in these items were as follows [(mean SFA ± SD%] bread (54.04 ± 5.27), pastry (53.41 ± 4.80), and whipping cream cake (70.09 ± 8.64). The high contents of trans fatty acid was analyzed in whipping cream cake. The average values of cholesterol contents in bakery products were as follows [mean (minimum-maximum), %)]; bread 2.36 (0.0~12.86), pastry 8.11 (0.0~42.80), and whipping cream cake 30.55(0.0~132.99).
        4,000원
        10.
        2011.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The composition of fatty acids in bakery products from 35 bakeries in Seoul was analyzed by GCFID. The contents of crude fat in bakery products were represented 9.54-44.30% in pastries, 14.67-41.22% in cookies and 7.63-28.15% in whipped cream cakes. The total saturated fatty acid content in pastries, cookies and whipped cream cakes were 12.8-75.1%, 8.7-81.6% and 50.2-85.9% respectively. The proportion of trans fatty acids in pastries ranged from 0.00 to 3.37%. Cookies and whipped cream cakes were represented varying amount of trans fatty acid with highest value of 4.55% in cookies and 2.13% in whipped cream cakes. Total estimated daily intakes of fatty acids from pastries and whipped cream cakes were as follows : 1.2 g/day/person for saturated fatty acids and 0.014 g/day/person for trans fatty acids.
        4,000원
        11.
        2011.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of this study was to investigate the extent of total sugar and sodium in 129 different kinds of bakery products, breads and cookies, sold at bakeshops in Seoul metropolitan area. The bakery products produced by bakeshops on a small scale were not applied by clauses of mandatory nutrition label for children's taste food. All types of free sugars -fructose, glucose, sucrose, lactose and maltose- were detected in breads, but only fructose and sucrose were detected in cookies. The average amount of sucrose per 100 g of breads was 6.24 g, of cookies was 30.03 g. Breads and cookies amounting to 100 g of sample contained total sugar of 11.19 g and 30.38 g, respectively. The average amounts of sodium in breads and cookies were 120.71 mg/100 g, 70.76 mg/100 g, respectively. When the contents of total sugar in breads and cookies per one serving size were compared to WHO guidelines, the percentages were 15.7% and 18.2% about recommended daily intake of total sugar of 50 g. When it come to sodium, the bakery products had range of 1.1~6.5% to 2000 mg of daily intake of sodium recommended by WHO.
        4,000원
        12.
        2010.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        21종류의 폴리스티렌 용기를 대상으로 용출조건에 따른 용기내 증류수로 용출되는 5종의 VOCs(톨루엔, 스티렌, 에틸벤젠, 이소프로필벤젠 및 n-프로필벤젠)를 Purge&Trap 장치를 연결하여GC-FID로 분석하였다. 각 표준물질은 1~50 ng/ mL의 농도범위에서 직선성(r2 =0.9976~0.9995)을 나타냈으며, 검출한계는 0.041~0.092 ng/mL, 정량한계는 0.135~0.304 ng/mL 이었다. 용출조건은 첫째, 60oC에서 30분, 둘째, 95oC에서 30분, 셋째, 실생활에서 컵라면 섭취시를 고려하여 끓은 물을 부은 후 뚜껑을 덮고 3분간 유지한 다음 뚜껑을 열고 5분 동안 개방하여 용출시키는 것으로 설정하였다. 톨루엔, 에틸벤젠, 이소프로필벤젠 및 n-프로필벤젠은 평균용출량이 모든 조건에서 5 ng/mL 이하로 검출되었으며 스티렌의 경우는 60oC에서 평균용출량이 4.02 ng/mL, 95oC에서는 52.71 ng/mL, 컵라면 섭취시의 조건에서는 17.23 ng/mL로 검출되었다.
        4,000원
        13.
        2010.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        A HPLC-MS/MS method was developed for simultaneous determination of six sweeteners (acesulfame-K, cyclamate, saccharin, sucralose, stevioside, aspartame) in children's favorite foods. The procedure involves an extraction of the six sweeteners with 50% methanol solution, sample clean-up using the Carrez clearing reagent and filtering with cartridge filter. The HPLC separation was performed on a Hypersil Gold (150 mm × 2.1 mm 5 um) column using the water/acetonitrile mobile phase (95:5). Mass spectrometric analysis was carried out using the TSQ Quantum Ultra operated in negative and positive ESI/SRM. With this method, good linear relationship, sensitivity and reproducibility were obtained. The spike recoveries of six sweeteners for 2 kinds of foods spiked into 0.4 mg/kg ranged from 87.4 to 114.7%. The detection limits were above 0.02 mg/kg. The method has been applied to determination of six sweeteners in children's favorite foods.
        3,000원
        14.
        2009.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Most propionic acid is added to food (especially breads) as preservatives and its form is sodium or calcium salt. Most countries admitted propionic acid as food preservatives but a tolerance limit is somewhat different according to countries. Recoveries of the official method for propionates reported as 50.0~60.0%. Accordingly new rapid determination method for propionates was developed using formic acid added sodium chloride (5 g) and ether (formic acid : ether = 1 : 2) as the extraction solvent to improve the official method with the complex processes. Propionate was dissolved from the samples with formic acid omitting steam distillation and ion exchange procedure. Then propionate in formic acid was extracted with ether and sodium chloride again. A 1 μl aliquot of the filtrate of ether was analyzed by gas chromatograph. Recoveries from sample A and B fortified with propionic acid sodium salt were 85.0 % and 90.0 %, respectively.
        4,000원
        15.
        2009.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The effects of part of plum, alcohol content and addition of t-resveratrol on the formation of ethyl carbamate during the fermentation for wine were investigated at a time interval (45 days) for 6 months. The concentration of the ethyl carbamate in plum wine was determined according to KFDA guideline for ethyl carbamate analysis. In the plum wine with 16% or 30% alcohol content, the concentrations of ethyl carbamate were increased with time of fermentation periods. The maximum concentrations of ethyl carbamate in 16% and 30% plum wines after the fermentation for 6 months were 0.071 μg/g and 0.188 μg/g, respectively. When t-resveratrol was added at the level of 10 μg/g in both 16% and 30% plum wine, the concentrations of ethyl carbamate at 6 months were 0.078 and 0.216 μg/ g, respectively. The addition of t-resveratrol at the level of 300 μg/g in both 16% or 30% plum wine, the concentrations of ethyl carbamate at 6 months were 0.078 and 0.169 μg/g, respectively. The ethyl carbamate in the plum wine was not formed during fermentation for 6 month as using the flesh of plum, but 0.588 μg/g of ethyl carbamate was formed as using plum with plum seed. The addition of 300 μg/g of t-resveratrol actually increased the concentration of the ethyl carbamate by 0.088 μg/g as fermented for 6 months using plum with seed. These results suggest that the flesh of plum should be used to reduce the formation of ethylcarbamate for production of plum wine and that the addition of t-resveratrol during fermentation of plum wine can not reduce the concentration of the ethyl carbamate.
        4,000원
        16.
        2013.09 KCI 등재 서비스 종료(열람 제한)
        2012년 1월에서 10월 사이에 전국에서 유통 중인 산화형 염모제(1제) 125개 제품에서 납(Pb), 비소(As), 카드뮴(Cd), 크롬(Cr), 망간(Mn), 니켈(Ni), 구리(Cu)의 농도 측정과 국산, 수입산 및 헤나별, 성상별,색상별로 비교해 봄으로써 이에 관련된 분야의 기초자료를 제공하고자 본 연구를 시행하였다. 분석된 전체 염모제의 평균 중금속 농도는 납 0.211 μg/g, 비소 0.051 μg/g, 카드뮴 0.008 μg/g, 크롬 0.954 μg/g, 망간 6.250μg/g, 니켈 0.591 μg/g, 구리 0.544 μg/g으로 측정되었으며 납, 비소의 경우 우리나라 화장품 안전기준 등에관한 규정에서 허용기준인 납 20 μg/g, 비소 10 μg/g보다 낮은 수치이다(식품의약품안전처 고시 제2013-24호). 또한 헤나 염모제는 통계적으로 유의한 차이를 보였으며(p < 0.05), 납 1.264 μg/g, 비소 0.267 μg/g,카드뮴 0.025 μg/g, 크롬 4.055 μg/g, 망간 72.044 μg/g, 니켈 3.076 μg/g, 구리 4.640 μg/g으로 국산 및수입 염모제보다 높았다. 염모제의 성상별 중금속 농도는 통계적으로 유의한 차이를 보였으며(p < 0.05), 크림과 액체 타입에서 크롬이 각각 0.708 μg/g, 0.478 μg/g로 가장 높았고, 분말타입에서는 망간이 60.041 μg/g로높았다. 염모제의 색상별 중금속 농도는 통계적으로 유의한 차이를 보이지 않았으며, 노란색의 경우 납, 크롬이높은 평균 농도를 보였고, 적색과 분홍색의 염모제는 크롬, 갈색과 흑색은 망간이, 녹색은 니켈이 높은 평균 농도를 나타내었다.
        19.
        2012.03 KCI 등재 서비스 종료(열람 제한)
        포름알데히드는 그 자체가 보존제로 또는 다른 보존제로부터 유리된 형태로 화장품에 일반적으로 존재한다. 포름알데히드는 낮은 농도로도 민감한 피부 반응을 일으킬 수 있으므로 화장품에서 그 사용을 규제하고 있다. 본 연구에서는 팩 및 마스크와 같은 화장품 114 품목을 시중에서 구입하여 포름알데히드의 함량을 분석하였다. 검사 품목의 36%에서 0.3 ~ 9.7 μg/mL (ppm) 수준의 포름알데히드가 검출되었다. 포름알데히드 유리 보존제를 함유한다고 표시되어 있는 12개 제품의 포름알데히드 함량을 조사하였다. Imidazolidinyl urea를 사용한 화장품 10품목과 1,3-Dimethylol- 5,5-dimethylhydantoin (DMDM hyantoin)을 사용한 화장품 2품목에서 평균 1.7 μg/mL (ppm)의 포름알데히드가 검출 되었다. 식품의약품안전청 고시 최대 허용 포름알데히드 농도 0.2 % (2,000 ppm)을 고려할 때, 이번 조사에서 분석한 화장품에서는 비교적 낮은 수준의 포름알데히드 함량을 보였다.