모과의 정미성분(呈味成分)으로 생각되는 polyphenol 성분(成分), amino acid, 당(糖), 유기산(有機酸)의 종류(種類)를 검색(檢索) 함량(含量)을 측정(測定)한 결과(結果)는 다음과 같다. 1. 모과의 polyphenol 성분(成分)의 주(主)가 되는 것은 catechin, leucoanthocyan, 회합형(會合型) tannin 등(等)이다. 2. 모과의 amino acid 로서 aspartic acid, glutamic acid, arginine, ${eta}-alanine$ 등(等)이 많았다. 3. 모과의 유기산(有機酸)의 주(主)가 되는 것은 citric acid, malic acid 이었다. 4. 모과의 당(糖)으로서 glucose, fructose, sucrose, xylose 등의 존재(存在)하였다. 5. 모과의 정미성분(呈味成分)의 함량(含量)을 사과나 배와 비교(比較)할 때 amino acid는 거의 같고, 당(糖) $1/2{sim}1/3$ 정도(程度)지만 polyphenol 성분(成分)이 $20{sim}50$ 배(倍), 유기산(有機酸)이 $3{sim}8$배(倍)로서 모과의 강(强)한 삽미(澁味)와 산미(酸味)의 원인(原因)을 이루고 있음을 알았다.
Tasty constituents of the Chinese quince such as polyphenols, amino acids, sugars and organic acids were surveyed through the course of this study. The results are as follows: 1. The major moiety of the polyphenol constituents were catechin, leucoanthocyan, and associated tannins. 2. Amino acids were mostly composed of aspartic acid, glutamic acid, arginine and ${eta}-alanine$. 3. Citric and malic acids were the main organic acids. 4. Sugars detected were glucose, fructose, sucrose and xylose. 5. When compared with apple and/or pear: the total amount of amino acids were quite similar, sugars decreased from half to one third, but the total amount of polyphenol constituents increased from 20 up to 50 times and 3 to 5 times in organic acids. These indicates unambiguously that the origin of rough and acidic taste is due to these high level of polyphenols and organic acids.
