Abstract ▼

The aim of this study was to determine the caffeine content of different sources and evaluate the caffeine intake by Korean population.
Revised method of 「Food Standard Code」, which was changed Nova-pak C₁₈(4 μm, 3.9×300 mm) to Capcell pak C₁₈(5 μm, 4.6×250 mm), applied to

The aim of this study was to determine the caffeine content of different sources and evaluate the caffeine intake by Korean population.
Revised method of 「Food Standard Code」, which was changed Nova-pak C₁₈(4 μm, 3.9×300 mm) to Capcell pak C₁₈(5 μm, 4.6×250 mm), applied to analyze the caffeine content of foods. Samples such as solid-, semisolid-, and powder-type were analyzed by an improved method. They were extracted with water, followed by treatment of 15% potassium ferrocyanide solution and 30% zinc sulfate solution. The resulting solution was filtered and injected to HPLC. The recoveries of caffeine ranged from about 91% to 107%, and limit of detection and limit of quantification of caffeine were 0.01 mg/kg, 0.04 mg/kg, respectively. Calibration curve over ranges of 0.05-100 mg/L showed good correlation coefficients(r²=0.9999). In addition, measurement uncertainty was calculated for two of certified reference materials, baking chocolate and decaffeinated coffee. The results of inter-laboratory validation seemed to be the improved method appropriate to the assessment of caffeine intake through five items such as recovery, LOD, LOQ, linearity and measurement uncertainty.
The caffeine content of 1,202 products, including coffee, soft drinks, tea, chocolate and cocoa products, was determined for the levels of caffeine in foods. The levels of caffeine were mainly high in coffee, confectionery and cocoa products. The daily intake of caffeine was estimated based on the monitoring data and Korean National Health and Nutrition Examination Survey(KNHNES)(2010-2012) to determine whether current caffeine intake approaches 'Recommended maximum caffeine daily intake' of Korea. Mean caffeine intake by general population, male and female were 24.1 mg/day, 25.6 mg/day and 22.7 mg/day, respectively. In children and adolescents(<18 y) mean caffeine intake of 15-18 years was 24.4 mg/day(0.4 mg/kgbw/day) and % Recommended Maximum Daily Intake was 16.1%. Mean caffeine intake by consumer group, male and female were 36.6 mg/day, 38.1 mg/day and 35.0 mg/day, respectively. Mean caffeine intake of 15-18 years consumer group was 44.9 mg/day(0.7 mg/kgbw/day) and % Recommended Maximum Daily Intake was 29.7%.
These data show that caffeine intake by the Korean population is within caffeine 'Recommended Maximum Daily Intakes'. These results have academic value and is useful for food policy of caffeine. Finally, these results on assessment of caffeine intake also will be used as a fundamental information of caffeine safety.

목차 Contents

• 표지 ... 1
• 자체연구개발과제 최종보고서 ... 2
• 국문 요약문 ... 3
• Summary ... 4
• 목 차 ... 5
• 연구개발과제 연구결과 ... 7
• 제1장 연구개발과제의 개요 ... 7
• 제1절 연구개발과제의 목표 ... 7
• 제2절 연구개발과제의 필요성 ... 7
• 제 3절 연구개발과제의 범위 ... 9
• 제 4절 연구개발 추진체계 및 방법 ... 10
• 제2장 연구개발과제의 국내ㆍ외 연구개발 현황 ... 11
• 제 1절 카페인의 제조방법 및 물리ㆍ화학적 특성 ... 11
• 제 2절 카페인 생산 및 수입실적 현황 ... 12
• 제 3절 카페인의 안전성 ... 13
• 제 4절 카페인 인체 대사 ... 14
• 제 5절 카페인의 국내외 관리 현황 ... 16
• 제 6절 국내외 식품 중 카페인 분석법 현황 ... 17
• 제 7절 국내외 카페인 섭취량 현황 ... 20
• 제3장 연구개발과제의 연구수행 내용 및 결과 ... 45
• 제1절 연구 내용 및 방법 ... 45
• 제2절 연구결과 ... 54
• 제4장 연구개발과제의 연구결과 고찰 및 결론 ... 127
• 제 1절 연구결과 고찰 ... 127
• 제 2절 결 론 ... 130
• 제5장 연구개발과제의 목표달성도 및 관련분야에의 기여도 ... 131
• 제 1절 연구개발과제의 목표달성도 ... 131
• 제 2절 관련분야에의 기여도 ... 131
• 제6장 연구개발과제의 연구개발 결과 활용계획 ... 132
• 제1절 활용성과 ... 132
• 제2절 활용계획 ... 132
• 제7장 참고문헌 ... 134
• 제8장 첨부서류 ... 140
• 끝페이지 ... 149