본 연구에서는 배추를 품종별, 부위별, 저장기간 동안의 vitamin U, amino acid 및 유리당 함량을 분석하고 변화경향을 조사하여 보았다. Vitamin U의 함량은 배추의 품종과 부위에 따라 차이를 나타내는 것으로 조사되었다. 동풍 배추(Winter Pride)의 겉잎(outward leaf)에서 12.70 mg/100 g, 55일 배추(55 Days)의 속잎(core leaf)에서 18.60 mg/100 g으로 vitamin U의

Vitamin U (5-methylmethionine) levels of Chinese cabbages at were investigated to establish its physiological characteristics and also amino acids and sugars levels to find out their relationship with vitamin U were determined The levels of vitamin U showed different from parts of Chinese cabbages. The highest value was shown in outward leaf in Wineter Pride (12.70 mg/100 g fresh wt.) and core leaf in 55 Days cultivars (18.60 mg/100 g fresh wt.). leaf pare were 1.7-9.0 times higher in vitamin U levels than those in midribs in both cultivars. levels of vitamin U in stored Chinese cabbages increased with storage time. Moreover, two cultivars used far this experiment showed different pattern during storage. In Winter Pride, vitamin U levels sharply increased in leaf and midrib of cote part during storage. This value reached about 2.5 times for leaf and 4 times for midrib compared to the levels of initial storage time in core part In 55 Days cultivars, outward leaf showed an increased level of vitamin U of 1.8 times compared to that of 1 month storage time. Methionine known as a precursor of vitamin U synthesis did not showed clear relationship with vitamin U levels. Methionine was either not detected or at negligibly low levels in Chinese cabbages during storage. Methionine may not play a role in an increase of vitamin U during storage of Chinese cabbages at . No clear relationship of free amino acids and soluble sugars for vitamin U accumulation during storage of Chinese cabbages was shown in this study.

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