Seoul Regional Korea Food and Drug Administration

Seoul, South Korea

Seoul Regional Korea Food and Drug Administration

Seoul, South Korea
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Ryu K.Y.,Research Policy Bureau | Lee M.-H.,NICS | Jung C.-S.,NICS | Yoon Y.,Sookmyung Womens University | And 3 more authors.
Korean Journal of Food Science and Technology | Year: 2012

This study was conducted to evaluate the bactericidal activity of weakly alkalic electrolyzed water (WEW) against Salmonella Typhimurium and Staphylococcus aureus on perilla leaves. The influences of organic matter, inform of bovine serum, and the ratio of WEW to perilla leaves on bactericidal activity of WEW were also examined. Treatment of these organisms with 25, 50, 75, and 100 ppm WEW was performed for 1 min, 3 min and 5 min, respectively. Higher bactericidal activity was observed after a treatment with 100 ppm WEW compared to a treatment with 25 ppm WEW by 0.7 log10CFU/g. The bactericidal activity of WEW also decreased with increasing bovine serum concentration. At the ratio of 10:1 (WEW: perilla leave), levels of Salmonella Typhimurium and Staphylococcus aureus were only reduced by 0.57 and 0.79 log10CFU/g, respectively. It is suggested that the removal of organic debris prior to application of sanitizers and treatment above the ratio of 25:1 (WEW: perilla leave) is needed in order to improve WEW activity. © The Korean Society of Food Science and Technology.


Lee H.-J.,Seoul Regional Korea Food and Drug Administration | Ahn H.-J.,Seoul Regional Korea Food and Drug Administration | Kang C.-S.,Center for Food and Drug Analysis | Choi J.-C.,Seoul Regional Korea Food and Drug Administration | And 4 more authors.
Food Control | Year: 2010

Propionic acid levels in fermented products, non-fermented products and foodstuffs, and medicinal herbs were analyzed total 263 samples retailed in Korean market. Propionic acid was detected in some Korean traditional fermented products such as salted and fermented fish sauce, Chunggukjang and salted and fermented fish. A small amount of propionic acid was also detected in fermented soybean paste, soy sauce, seasoned soybean paste, vinegar and fermented milk. Significantly, propionic acid in vinegar showed high levels among fermented products (P<0.05). Among non-fermented products and foodstuffs, propionic acid in shellfish showed high level, while propionic acid was not detected in cereal and sauce. A statistically significant difference was shown in propionic acid levels of shellfish. propionic acid in brackish water clam showed significantly higher levels than that of others. Ark shell and scallop also showed high levels in propionic acid. Among 10 kinds of medicinal herbs, propionic acid was detected in 3 samples (Lycium chinensis Miller, Astragali radix and Atractylodes rhizoma). © 2009 Elsevier Ltd. All rights reserved.


Kim Y.-H.,Seoul Regional Korea Food and Drug Administration | Kang H.-S.,Seoul Regional Korea Food and Drug Administration | Oh S.-W.,Seoul Regional Korea Food and Drug Administration | Lee H.-J.,Food Drug Administration Korea | And 8 more authors.
Korean Journal of Food Science and Technology | Year: 2010

This study was conducted to monitor aflatoxins in various medicinal herbs, providing available data for the safety of those products. To monitor aflatoxins in medicinal herbs, a total of 400 samples of 40 different herbs were collected in commercial retailers in Seoul, Daejeon, Gwangju, Daegu, and Busan from March to August, 2008. The samples that passed the sensory evaluation were tested for aflatoxins. Aflatoxins in samples were analyzed by HPLCflorescence coupled with photochemical enhancement. Samples were extracted with 70% methanol and then diluted to the appropriate concentration. A refining process was performed using an immunoaffinity column. The analytical method used in this study was validated. The R2 value for aflatoxin B1 was 0.99946, and the detection range was from 0.25 to 10.0 ng/mL. The accuracy of the analysis was ranged from 83.2% to 101.8%. The relative standard deviation (RSD) in the aflatoxin B1 analysis was 3.4%, demonstrating the precision of this method. In addition, the detection limit and quantitative analysis limit of aflatoxin B1 was 0.53 μg/kg and 1.76 μg/kg, respectively. These results indicated that the analytical method used in this study was appropriate. The results of HPLC showed that 1% (4 samples) of the samples may contain aflatoxins. The concentration of quantified aflatoxin was 2.3 μg/kg for both Quisqualis fructus and Remotiflori radix samples. The other samples were below the limit of quantification. Moreover, the concentration of aflatoxin B1 which is made by specific fungi were below the level of regulation. Only 20% of aflatoxin B1 were transferred to hot water. Therefore, the levels of aflatoxins in medicinal herbs were considered to be safe especially considering the aflatoxin transfer ratio. © The Korean Society of Food Science and Technology.


Kim H.Y.,Seoul Regional Korea Food and Drug Administration | Chung S.Y.,Seoul Regional Korea Food and Drug Administration | Choi S.H.,Seoul Regional Korea Food and Drug Administration | Lee J.S.,Seoul Regional Korea Food and Drug Administration | And 9 more authors.
Korean Journal of Food Science and Technology | Year: 2010

This study was conducted to monitor residues of 10 veterinary drugs in food products. Various veterinary drugs were examined including enrofloxacin, ciprofloxacin, norfloxacin, oxolinic acid, amoxicillin, ampicillin, oxytetracycline, tetracycline, chlortetracycline, and doxycycline in beef, pork, egg, chicken, eel, flatfish, and rockfish obtained from 6 different regions (Seoul, Incheon, Daejeon, Gwangju, Daegu, Busan). Residues were detected in 21 (6.5%) samples out of 321 samples. In particular, 2 (1.0%) livestock samples had detected residues among 203 products, and 19 (16.1%) aquaculture samples had residues detected among 118 products. The most frequently detected drug residues in aquaculture products were oxytetracycline and amoxicillin, but the levels were mostly below the MRL (Maximum Residue Limit). In only one flatfish sample, amoxicillin was found at a level higher than the MRL (0.05 mg/kg). In livestock products, residues of most veterinary drugs were not detected. But enrofloxacin was detected in 2 chicken (Korean name: Ogolgae) samples at a higher level than the MRL (0.1 mg/kg as the sum of ciprofloxacin). © The Korean Society of Food Science and Technology.


Sung I.K.,Gyeongin Regional Korea Food and Drug Administration | Park S.J.,Seoul Regional Korea Food and Drug Administration | Kang K.,Gyeongin Regional Korea Food and Drug Administration | Kim M.Y.,Jeju National University | Cho S.,Seoul National University
Korean Journal for Food Science of Animal Resources | Year: 2015

β-agonists are anabolic compounds that promote fat loss and muscle gain, and their administration to livestock may provide economic benefits by increasing growth rate and feed efficiency. For these reasons, β-agonists are also commonly added to livestock feed as growth promoters. This can introduce a significant risk of secondary human poisoning through intake of contaminated meat. A new method for the simultaneous determination of three β-agonists (clenbuterol, ractopamine, and zilpaterol) was developed in this study and applied to various meat samples. The limits of quantification, derived through a validation test following Codex guidelines, were 0.2 μg/kg for clenbuterol and zilpaterol, and 0.4 μg/kg for ractopamine. The average recoveries for clenbuterol, ractopamine, and zilpaterol ranged from 109.1% to 118.3%, 95.3% to 109.0%, and 94.1% to 120.0%, respectively. The recovery and coefficient of variation (CV) values fell within the acceptable range according to the Codex guidelines. This method reduced the analysis time without decreasing detection efficiency by modifying the pretreatment steps. This method could be utilized to manage the safety of imported meat products from countries where zilpaterol use is still permitted, thereby improving public health and preventing β-agonist poisoning due to secondary contamination.


Kim H.Y.,Seoul Regional Korea Food and Drug Administration | Choi S.H.,Seoul Regional Korea Food and Drug Administration | Chung S.Y.,Seoul Regional Korea Food and Drug Administration | Choi H.J.,Seoul Regional Korea Food and Drug Administration | And 9 more authors.
Korean Journal of Food Science and Technology | Year: 2011

The purpose of this study was to develop a methodology to detect spinosad which are difficult to analyze by multi-component simultaneous analysis of pesticide residues. We monitored spinosad due to the paucity of related information. The spinosad was determined using HPLC with UV detector at 250 nm. Correlation coefficient (r2) for standard curve of spinosad A and D at standard concentration of 0.1-5.0 mg/kg were 0.999, respectively. Limit of quantitation (LOQ) of HPLC analysis was 0.005 mg/kg while limit of detection (LOD) was 0.001 mg/kg. Recovery experiments were conducted on five representative agricultural products to validate the analytical method. The recovery of proposed methods ranged from 74.9% to 104.0% and relative standard deviations were less than 10%. Spinosad residues were investigated in 16 commodities collected from 22 provinces. In this study, residues on all samples were not detected. © The Korean Society of Food Science and Technology.


Kim H.-Y.,Seoul Regional Korea Food and Drug Administration | Oh S.-W.,Seoul Regional Korea Food and Drug Administration | Chung S.-Y.,Seoul Regional Korea Food and Drug Administration | Choi S.-H.,Seoul Regional Korea Food and Drug Administration | And 8 more authors.
Korean Journal of Food Science and Technology | Year: 2011

This study was carried out to examine microbiological contamination of ready-to-eat products and to propose a draft-standard and specifications according to food types. RTE foods were classified into 6 groups including fish products, meat products, breads, rices, salads, and fresh cut foods. The prevalence rates of pathogens detected from all samples were compared among food categories. The pH ranges for all RTE samples were between 3.8 and 7.3. Total aerobic cell counts ranged from 2 to 6 log CFU/g. Bread, rice and fresh-cut foods showed significantly higher counts, which ranged above 4.0 log CFU/g among the samples. Two kinds of rice were above the level of the KFDA Food Code standard for Eschrichia coli. The prevalence rate of E. coli in the rice was 6.7%. For Staphylococcus aureus, one fish product and one bread-product had levels above 2 log CFU/g. Bacillus cereus counts for all samples were below the level of 3 log CFU/g. Listeria monocytogenes was not detected in the samples. Therefore, these data suggest that the primary microbial hazard factors for ready-to-eat foods and risk assessments should focus on E. coli, S. aureus, and B. cereus. © The Korean Society of Food Science and Technology.


Lee H.J.,Daegu Regional Korea Food and Drug Administration | Kang Y.W.,Daegu Regional Korea Food and Drug Administration | Lee S.M.,Daegu Regional Korea Food and Drug Administration | An K.A.,Daegu Regional Korea Food and Drug Administration | And 8 more authors.
Korean Journal of Food Science and Technology | Year: 2014

Penicillin and its salts, including the benzatine, procaine, and sodium salts, have been widely used in human and veterinary medicine. Owing to their low toxicity, they currently form the most important group of antibiotics. However, overdose and abuse of these antibiotics may lead to potential risk in human health. Therefore, this study was conducted to validate the analysis method established by the Korea Food Code in 2012 and to monitor the levels of benzylpenicillin residues in products with reference to the maximum residue level (MRL). Of the 232 product samples tested, benzylpenicillin was detected in 11 livestock products and 2 marine products. Benzylpenicillin concentrations were found to be lower than the MRL in 12 products; however, the concentration of benzylpenicillin was found to be greater than the MRL in 1 pork product. The limit of quantification (LOQ) for benzylpenicillin was found to be 0.001-0.002 mg/kg, with an average recovery of 90.4-115.3%. Calibrations showed good linearity of 0.995 over a range of 0.002-0.05 mg/kg. © The Korean Society of Food Science and Technology.


Song J.-S.,Seoul Regional Korea Food and Drug Administration | Park S.-J.,Seoul Regional Korea Food and Drug Administration | Choi J.-Y.,Seoul Regional Korea Food and Drug Administration | Kim J.-S.,Seoul Regional Korea Food and Drug Administration | And 3 more authors.
Korean Journal for Food Science of Animal Resources | Year: 2016

This study was conducted to determine the residual amount of veterinary drugs such as meloxicam, flunixin, and tulathromycin in animal products (beef, pork, horsemeat, and milk). Veterinary drugs have been widely used in the rearing of livestock to prevent and treat diseases. A total of 152 samples were purchased from markets located in major Korean cities (Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju, Ulsan and Jeju), including Jeju. Veterinary drugs were analyzed by liquid chromatography- Tandem mass spectrometry according to the Korean Food Standards Code. The resulting data, which are located within 70-120% of recovery range and less than 20% of relative standard deviations, are in compliance with the criteria of CODEX. A total of five veterinary drugs were detected in 152 samples, giving a detection rate of approximately 3.3%; and no food source violated the guideline values. Our result indicated that most of the veterinary drug residues in animal products were below the maximum residue limits specified in Korea. © 2016 Korean Society for Food Science of Animal Resources.


Kim H.Y.,Seoul Regional Korea Food and Drug Administration | Park S.J.,Seoul Regional Korea Food and Drug Administration | Chung S.Y.,Seoul Regional Korea Food and Drug Administration | Choi S.H.,Seoul Regional Korea Food and Drug Administration | And 5 more authors.
Korean Journal of Food Science and Technology | Year: 2011

The purpose of this study was to analyze the content and consumption of total sugar from school lunches at Incheon and Chuncheon. The samples were collected from eight elementary schools and eight middle schools in Incheon and Chuncheon for 15 days. The analysis of total sugar content was performed for 1334 main dishes, side dishes, and desserts which were supplied by elementary and middle school foodservices. Total sugar content was extracted from various types of food with 50% ethanol after defatting. We simultaneously analyzed sugars such as fructose, glucose, sucrose, maltose and lactose by a high performance liquid chromatography with refractive index detector. The average lunch intake for elementary school and middle school students was 372.6±72.2 g and 449.2±81.1 g, respectively. The total sugar content in desserts was 7.21±6.32 g/100 g, 1.69±2.44 g/100 g in side dishes, and 0.32±0.77 g/100 g in main dishes. Among side dishes, fried foods, stir-fried foods, and sauces contained the highest amounts of total sugar. The total sugar intake was 4.63±5.11 g in desserts, 0.64±1.01 g in side dishes, and 0.55±1.48 g in main dishes. Main and side dishes with a high total sugar intake included cooked rice with seasoning, fried foods, stir-fried foods and preserved foods. The average total sugar intake per meal for elementary school middle school, and all students was 4.03±3.67 g, 6.97±6.59 g, and 5.50±5.53 g respectively. We have provided useful information to decrease the intake of total sugar in school lunches. It is recommended that total sugar intake be continuously monitored. © The Korean Society of Food Science and Technology.

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