A5064107594- Biochemical Analysis and Sensing Techniques
- Dye analysis and toxicity
- Food Quality and Safety Studies
- Advanced Chemical Sensor Technologies
- Analytical chemistry methods development
- Consumer Attitudes and Food Labeling
- Meat and Animal Product Quality
- Nutrition, Health and Food Behavior
- Phytochemicals and Antioxidant Activities
- Chemical Analysis and Environmental Impact
- Analytical Chemistry and Chromatography
- Biopolymer Synthesis and Applications
- Food Safety and Hygiene
- Metabolomics and Mass Spectrometry Studies
- Sodium Intake and Health
- Nutritional Studies and Diet
- Antioxidant Activity and Oxidative Stress
- Food Chemistry and Fat Analysis
- Crustacean biology and ecology
- Plant pathogens and resistance mechanisms
- Sulfur Compounds in Biology
- Electrochemical sensors and biosensors
- Sensory Analysis and Statistical Methods
- Transport Systems and Technology
- Identification and Quantification in Food
National Institute of Food and Drug Safety Evaluation
2010-2024
Ministry of Food and Drug Safety
2015-2018
Yonsei University
2010-2011
Chungbuk National University
2007
An improved method for the analysis of caffeine in foods by HPLC was validated measuring several analytical parameters. The contents 1202 products available from Korean markets were analysed. A consumption study conducted using data Korea National Health and Nutrition Examination Survey (KNHANES), 2010-12, to estimate intakes population. mean all sources general population consumers 67.8 102.6 mg day(-1) age groups, respectively. 95th percentile 250.7 313.7 day(-1), In those aged 30-49...
Benzoic, sorbic and propionic acid are used as preservatives in foods can also be naturally present processed foods. The levels of 939 vegetables were determined. Benzoic analysed by high-performance liquid chromatography with a diode-array detector further confirmed chromatography-tandem mass spectrometry, whereas was using gas chromatography-flame ionization chromatography-mass spectrometry. found 10.9% 36.2%, respectively, the samples. In contrast, not any highest amounts benzoic perilla...
Synthetic colourants are highly regulated due to their correlation with a variety of health hazards. Regulatory services must be able detect the substances in cost-effective, efficient, and sensitive manner. LC-UV LC-MS/MS methods have been developed simultaneously five illegal foods, such as: citrus red II, diethyl yellow, dimethyl metanil rhodamine B. This method showed good linearity (R2 > 0.99) low limits detection (0.09–0.19 mg kg–1) quantitation (0.26–0.58 kg–1). The recoveries at...
This study was conducted to provide basic data as part of a project distinguish naturally occurring organic acids from added preservatives. Accordingly, we investigated levels sorbic, benzoic and propionic in fish their processed commodities. The 265 commodities were determined by high-performance liquid chromatography-photodiode detection array (HPLC-PDA) sorbic gas chromatography-mass spectrometry (GC/MS) acid. For acid, GC-MS used because its high sensitivity selectivity complicated...
Four artificial sweeteners, i.e., sodium saccharin, aspartame, acesulfame-K and sucralose, are permitted for use in Korea, recent regulatory changes have expanded the number of food categories which they may be used. sweeteners were determined simultaneously more than 900 items from 30 that commercially available Korean markets, including both domestic imported products, using high-performance liquid chromatography evaporative light-scattering detection (ELSD). A new procedure 75% acetone to...
A sweetener is a food additive that imparts sweet taste to products. Sweeteners have been increasingly used in Korea since the approval of sodium saccharin and d-sorbitol 1962. Unlike contaminants, humans are exposed additives only through consumption processed For exposure assessments sweeteners, dietary intakes products containing acesulfame-K, aspartame, saccharin-Na, sucralose were determined, resulting calculated estimated daily intake (EDI) values compared directly with each additive's...
Abstract We evaluated the usefulness of saponification, direct solvent extraction, and Soxhlet extraction as methods to determine amounts tocopherols in soybeans. yielded highest analytical values for each tocopherol homolog was best method quantifying Coupling simple with HPLC provided a highly reproducible procedure quantify The percent mean recovery ± standard deviation ( n = 5) 103.2 1.21, 109.8 4.18, 93.8 1.12, 106.9 1.54% α‐, β‐, γ‐, δ‐tocopherol, respectively. linearity test...
A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method as an alternative to a gas chromatography-thermal energy analyser (GC-TEA) recommended by the European Committee on Standardization (CEN) was validated for simultaneous determination of eight N-nitrosamines released into artificial saliva from rubber or elastomer teats and soothers. N-nitroso-dipropylamine-d₁₄ (NDPA-d₁₄) used internal standard accurate quantification. The with relatively good analytical results, including...
An improved and highly sensitive method was developed validated for the determination of 12 (7 permitted 5 non-permitted in Korea) non-nutritive sweeteners various foods using liquid chromatography-electrospray ionisation-tandem mass spectrometry. The chromatographic separation performed on an Xbridge BEH C18 column (3 mm × 100 mm, 2.5 μm) with gradient elution 10 mM ammonium acetate water methanol. Sample preparation consisted simple dilution, homogenisation, centrifugation purification a...
The analytical method of silicon dioxide (SiO2) in health functional food products was developed employing inductively coupled plasma optical emission spectrometry (ICP-OES) assisted by acid (hydrofluoric and boric acid) digestion open system without alkali fusion. limit detection (LOD) quantification (LOQ) this were found to be 0.07 0.20 mg/L, respectively. Linearity (r 2) linear range 0.99 0.20~20.0 accuracy precision SiO2 (0.4, 1.0, 2.0%, w/w) spiked glucosamine exhibited the 90.22~94.14%...
The safety of nine synthetic colour additives approved in Korea were assessed through hazard identification, characterisation, exposure assessment, and risk characterisation. Hazard identification characterisation conducted using new information based on toxicology data. Exposure assessment calculated the estimated daily intake (EDI) colours. Finally, was evaluated by comparing EDIs colours with acceptable (ADI). 1,114 samples (24 food categories) among a total 1,454 contained either at...
An improved method for the analysis of propylene glycol (PG) in foods using a gas chromatography-flame ionisation detector (GC-FID), with confirmation by GC-MS, was validated measuring several analytical parameters. The PG concentrations 1073 products available Korean markets were determined. detected 74.1% samples, concentration range from limit detection (n.d., 0.39 μg ml(-1)) to 12,819.9 mg kg(-1). Korea National Health and Nutrition Examination Survey (KNHANES) 2011-2013 reported mean...
This study was conducted to develop an analytical technique for determination of chlorite and chlorate concentrations in fresh-cut food dried fish products by ion chromatography/conductivity detection method using a hydroxide mobile phase. Deionized water added homogenized samples, which were then extracted ultrasound extraction centrifuged at high speed (8,500 rpm). Subsequently, Sep-Pak tC18 cartridge used purify the supernatant. Chlorite ions separated 20 mM KOH solution as phase Dionex...
Food preservatives are very important food additives for the biological and chemical safety of processed foods. The purposes this study were to investigate Korean consumer’s perception information needs on preservatives, develop an educational booklet as a risk communication material assess effect developed booklet. To understand self-administered questionnaire survey was conducted by 381 parents having elementary school students at Seoul Geoynggi area in Korea. Based results, brain storming...