• The monthly packaging world
• /
• s.360
• /
• pp.103-111
• /
• 2023

식품의약품안전처는 지난 10월 14일 「기구 및 용기·포장의 기준 및 규격」을 일부 개정했다. 개정이유로는 기구 및 용기·포장의 원재료로 사용할 재생원료의 인정 절차 등이 마련될 예정임에 따라 인정을 신청하는 경우 제출하여야 하는 자료를 구체적으로 정하고, 환경부에서 「식품용기 사용 재생원료 기준」을 고시함에 따라 이에 맞추어 재생원료 기준을 개선하는 한편, 지속가능한 사회실현을 위한 산업현장의 요구를 반영하여 폴리부틸렌아디페이트테레프탈레이트(PBAT) 수지를 등재하고, 시험법에 대한 신뢰도 제고 등을 위하여 시험용액 등의 조제방법 및 분석기기의 측정조건을 개선하는 등 현행 기준 및 규격의 일부 미비점을 개선하기 위함이다.

• The monthly packaging world
• /
• s.344
• /
• pp.96-102
• /
• 2021

식품의약품안전처는 기구 및 용기·포장에 대한 효율적이고 합리적인 안전관리 및 식품 관련 산업현장의 요구를 반영하여 합성수지제의 재활용 기준을 개선하기 위해 '기구 및 용기·포장의 기준 및 규격' 일부 개정 고시를 시행했다고 밝혔다. 이번 고시를 통해 ▲합성수지제 재활용 기준 개선, ▲활성·지능 용기·포장 제조기준 마련, ▲합성수지제 재질 분류 정비, ▲재질별 규격 재정리, ▲폴리케톤 규격 신설, ▲시험법 개선 및 문구 정비 등 현행 기준 및 규격의 일부 미비점을 개선·보완에 나섰다. 지난 호에 이어서 그 상세 내용을 살펴보도록 한다.

• The monthly packaging world
• /
• s.324
• /
• pp.86-91
• /
• 2020

식품의약품안전처(처장 이의경)는 식품용 기구·용기 "포장의 공통기준을 세분화 하는 등의 내용을 담은" 기구 및 용기·포장의 기준 및 규격·고시 개정안을 2월28일 행정예고했다. 이번 개정안의 주요 내용은 ▲공통제조기준의 세분화, ▲합성수지의 재활용기준 명확화, ▲공통규격 및 용도별 규격정비, ▲시험법개선등이다. 다음에 기구 및 용기·포장의 기준 및 규격 일부개정고시(안)의 상세한 내용을 살펴보도록 한다.

• The monthly packaging world
• /
• s.343
• /
• pp.102-109
• /
• 2021

식품의약품안전처는 기구 및 용기·포장에 대한 효율적이고 합리적인 안전관리 및 식품 관련 산업현장의 요구를 반영하여 합성수지제의 재활용 기준을 개선하기 위해 '기구 및 용기·포장의 기준 및 규격' 일부 개정 고시를 시행했다고 밝혔다. 이번 고시를 통해 ▲합성수지제 재활용 기준 개선, ▲활성·지능 용기·포장 제조기준 마련, ▲합성수지제 재질 분류 정비, ▲재질별 규격 재정리, ▲폴리케톤 규격 신설, ▲시험법 개선 및 문구 정비 등 현행 기준 및 규격의 일부 미비점을 개선·보완에 나섰다. 다음에 그 상세 내용을 살펴보도록 한다.

• Journal of Food Hygiene and Safety
• /
• v.34 no.2
• /
• pp.115-123
• /
• 2019

An analytical method was developed for the determination of fenpropimorph, a morpholine fungicide, in hulled rice, potato, soybean, mandarin and green pepper using QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) sample preparation and LC-MS/MS (liquid chromatography-tandem mass spectrometry). The QuEChERS extraction was performed with acetonitrile followed by addition of anhydrous magnesium sulfate and sodium chloride. After centrifugation, d-SPE (dispersive solid phase extraction) cleanup was conducted using anhydrous magnesium sulfate, primary secondary amine sorbents and graphitized carbon black. The matrix-matched calibration curves were constructed using seven concentration levels, from 0.0025 to 0.25 mg/kg, and their correlation coefficient ($R^2$) of five agricultural products were higher than 0.9899. The limits of detection (LOD) and quantification (LOQ) were 0.001 and 0.0025 mg/kg, respectively, and the limits of quantification for the analytical method were 0.01 mg/kg. Average recoveries spiked at three levels (LOQ, $LOQ{\times}10$, $LOQ{\times}50$, n=5) and were in the range of 90.9~110.5% with associated relative standard deviation values less than 5.7%. As a result of the inter-laboratory validation, the average recoveries between the two laboratories were 88.6~101.4% and the coefficient of variation was also below 15%. All optimized results were satisfied the criteria ranges requested in the Codex guidelines and Food Safety Evaluation Department guidelines. This study could serve as a reference for safety management relative to fenpropimorph residues in imported and domestic agricultural products.

• Journal of Korean Society of Environmental Engineers
• /
• v.35 no.1
• /
• pp.45-56
• /
• 2013

This study was suggested as fundamental data to control medical materials remained in Nakdong range gauge. The level of Iopromide detected in Nakdong mainstream was $0.0015{\sim}0.37{\mu}g/L$, Mefenamic acid $0.0087{\sim}0.056{\mu}g/L$, Diclofenac $N.D.{\sim}0.01{\mu}g/L$, Atenolol $N.D.{\sim}0.024{\mu}g/L$, Propranolol $N.D.{\sim}0.0038{\mu}g/L$, Lincomycin $0.0005{\sim}0.038{\mu}g/L$, and Trimethoprim $N.D.{\sim}0.0083{\mu}g/L$. At sewage disposal plant in the region, most of them were detected high levels of density. Especially, the level of Iopromide was found the highest up to $5.38{\mu}g/L$. At livestock wasted water disposal plant, the level of lincomycin was detected the highest figure of $477{\mu}g/L$. As a result, medical materials from Nakdong River mainstream got increasing the concentration due to inflow from sewage disposal plant in Gumi and River Geumho in Daegu, which affects residential and industrial areas significantly. Therefore, to control medical materials remained in Nakdong River efficiently, Geumho River and sewage disposal plants shall be continuously monitored and managed, which is recommendable.

• Journal of Food Hygiene and Safety
• /
• v.37 no.3
• /
• pp.136-142
• /
• 2022

The research aims to develop a rapid and easy analytical method for methoprene using liquid chromatography-tandem mass spectrometry (LC-MS/MS). A simple, highly sensitive, and specific analytical method for the determination of methoprene in livestock products (beef, pork, chicken, milk, eggs, and fat) was developed. Methoprene was effectively extracted with 1% acetic acid in acetonitrile and acetone (1:1), followed by the addition of anhydrous magnesium sulfate (MgSO₄) and anhydrous sodium acetate. Subsequently, the lipids in the livestock sample were extracted by freezing them at -20℃. The extracts were cleaned using MgSO₄, primary secondary amine (PSA), and octadecyl (C₁₈), which were then centrifuged to separate the supernatant. Nitrogen gas was used to evaporate the supernatant, which was then dissolved in methanol. The matrix-matched calibration curves were constructed using 8 levels (1, 2.5, 5, 10, 25, 50, 100, 150 ng/mL) and the coefficient of determination (R²) was above 0.9964. Average recoveries spiked at three levels (0.01, 0.1, and 0.5 mg/kg), and ranged from 79.5-105.1%, with relative standard deviations (RSDs) smaller than 14.2%, as required by the Codex guideline (CODEX CAC/GL 40). This study could be useful for residue safety management in livestock products.

• Journal of Food Hygiene and Safety
• /
• v.34 no.1
• /
• pp.22-29
• /
• 2019

Validamycin A is an aminoglycoside fungicide produced by Streptomyces hygroscopicus that inhibits trehalase. The purpose of this study was to develop a method for detecting validamycin A in agricultural samples to establish MRL values for use in Korea. The validamycin A residues in samples were extracted using methanol/water (50/50, v/v) and purified with a hydrophilic-lipophilic balance (HLB) cartridges. The analyte was quantified and confirmed by liquid chromatograph-tandem mass spectrometer (LC-MS/MS) in positive ion mode using multiple reaction monitoring (MRM). Matrix-matched calibration curves were linear over the calibration ranges (0.005~0.5 ng) into a blank extract with $R^2$ > 0.99. The limits of detection and quantification were 0.005 and 0.01 mg/kg, respectively. For validation validamycin A, recovery studies were carried out three different concentration levels (LOQ, $LOQ{\times}10$, $LOQ{\times}50$, n = 5) with five replicates at each level. The average recovery range was from 72.5~118.3%, with relative standard deviation (RSD) less than 10.3%. All values were consistent with the criteria ranges requested in the Codex guidelines (CAC/GL 40-1993, 2003) and the NIFDS (National Institute of Food and Drug Safety) guideline (2016). Therefore, the proposed analytical method is accurate, effective and sensitive for validamycin A determination in agricultural commodities.

• Proceedings of the Korea Contents Association Conference
• /
• 2007.11a
• /
• pp.478-481
• /
• 2007

To date, modern medicine has relied heavily on synthetically or chemically produced drugs to treat or prevent diseases and conditions. However, developments in the field of molecular biology have led to an increase in the knowledge of biological systems and their interactions. Proteins are biomolecules that are essential in determining the structure and carrying out most of the functions in living cells. The future of pharmacy belongs to a special category of protein therapeutics. Based on the result of industry analysis, it is suggested how to commercialize protein therapeutics for biotech-enterprises.

• Korean Journal of Plant Resources
• /
• v.31 no.4
• /
• pp.322-329
• /
• 2018

A diarylheptanoid, (5S)-1,7-bis-(3,4-dihydroxyphenyl)-5-hydroxyheptane-3-one-5-O-${\beta}$-D-xylopyranoside, named oregonin (1), was isolated from the of Alnus japonica (A. japonica), which is a species of the genus Betulaceae, growing throughout Korea, Japan and China. The structure was elucidated by various spectroscopic methods including negative and positive LC/MS, 1H-NMR, and 13C-NMR techniques or by comparison with authentic samples. In order to evaluate the anti-oxidative activities of oregonin (1) isolated from A. japonica, 1,1-diphenyl-2-picryhydrazyl (DPPH) radical scavenging activity and 2,2'-azino-bis[3-ethylbenzothiazoline-6-sulphonic acid] (ABTS) radical scavenging activity were measured in vitro. Oregonin from A. japonica exhibited potent DPPH and ABTS radical scavenging activities. A. japonica shows not only 1,1-diphenyl-2-picryhydrazyl (DPPH) radical scavenging activity and ABTS radical scavenging activity, but also apoptosis modulative effects. The present results indicate that A. japonica could be a hair-growth-promoting agent for cosmetic products.