한국식품영양학회지 Vol. 32 No. 5 (p.401-407)

중국 보이차의 무기성분 특성 평가

The Evaluation of Inorganic Components with Pu-Erh Tea
키워드 :
Pu-erh tea,green tea,inorganic components,mineral water,extraction time,maximum allowable concentration

목차

Abstract
서 론
재료 및 방법
   1. 재료의 선정
   2. 분석 항목 및 방법
   3. 통계처리
결과 및 고찰
   1. 무기성분 기준
   2. 보이차의 무기성분 비교
   3. 산성도 변화
   4. 추출량과 시간 및 횟수
요약 및 결론
References

초록

This study compares and analyzes inorganic components of four different Pu-erh tea species consumed in Korea. The criteria for the inorganic components was based on the Royal Institute of Technology (KTH) recommendations. Out of the 19 general items: potassium, manganese, silicon and fluorine were detected in amounts exceeding the maximum allowable concentration by 5~23, 57~91, 1.6~1.8 and 9~18 times respectively. Out of the 15 potentially harmful elements: aluminum and nickel were exceeded the Maximum allowable concentration by 9~14 times and 0.8~1.2 times respectively. To reduce the concentration of inorganic elements in excess of the maximum allowable concentration, the extraction time of tea should be less than 1 minute in addition to limiting the amount. The amount of Pu-erh tea for extraction was about 0.1 g manganese, about 0.3 g potassium, about 0.5 g fluoride and about 2 g silicon. Therefore, the maximum amount of tea for extraction should be 0.1 g in regards to the safety of Pu-erh tea. Based on the recommended maximum daily intake of inorganic ingredients by the Ministry of Food and Drug Safety, it is desirable that the number of extractions be less than three.