Changes of Free Sugars in Kimchi during Fermentation

김치숙성 중 유리당의 변화

The changes of free sugars in Kimchi during fermentation were analyzed by GC. The major sugars in Kimchi were mannose, fructose, glucose, and galactose and they were reduced gradually with fermentation, whereas mannitol appeared in the middle stage of fermentation and reduced slowly. The presence of mannitol in Kimchi was identified by GC and GC/MS for the first time. Most of free sugars were stemmed from chinese cabbage and radish, and reduced with fermentation. These patterns of change of free sugars were almost the same in Kimchi. It could be concluded that regardless of kinds of Kimchi the fermentation mechanism of Kimchi was very similar on the basis of the changes of free sugars.

김치숙성 중 유리당의 변화를 GC로서 분석하였다. 김치에 존재하는 주요 유리당은 mannose, fructose, glucose, galactose등이었고 이들은 숙성이 진행됨에 따라 점차 감소한 반면 mannitol은 숙성이 진행됨에 따라 생성되었다가 서서히 감소하였다. 여러종류의 김치 중 유리당의 변화를 비교한 결과 그 변화양상이 비슷하였으며, 이로부터 대부분의 김치는 비슷한 발효기작을 따르는 것 같았다.