본 연구는 고추가 함유한 효소들이 식품이 가공과 저장시에 어떠한 영향을 미칠 것인가를 추정하고자 pectinesterase(PE), polygalacturonase(PG), lipoxygenase(LOX) and peroxidase(POD)의 특성을 조사하였다. 그 결과는 다음과 같다. 1. PE는 pH 7.5에서 최대활성을 보였으며 pH 5.5이하에서는 활성이 거의 나타나지 않았다. NaCl과 CaCl_2첨가의 경우 각각 0.2M과 0.05M에서 최대활성을 보였으며, NaCl과 CaCl_2가 PE의 활성촉진제로 작용하였다. 2. PG는 pH 6.0에서 최대활성을 보였으며 알칼리성에서보다 산성에서 활성이 컸다. NaCl과 CaCl_2첨가의 경우 각각 0.3M과 0.2mM에서 최대활성을 보였으며 이후 점차 감소하여 이들 염을 첨가하지 않았을 때보다도 활성이 감소하였다. 3. LOX는 pH 7.0과 pH 8.5에서 최대활성을 보였다. 4. POD는 pH 6.0에서 최대활성을 보였고 대체로 약산성과 중성 사이에서 활성이 크게나타났다. NaCl과 CaCl_2 같은 염은 POD활성에 약간의 저해제로 사용되었다.

The object of this study was to investigate the characteristics of pectinesterase(PE), polygalacturonase(PG) and Peroxidase(POD) in Kimchi materials. The results were as follows : 1. The specific activities of PEs in Korean cabbage, Korean raddish, garlic and ginger were 200 unit/mg protein, 23.1 unit/mg protein, 0.8 unit/mg protein and 32 unit/mg protein, respectively. The optimum pHs of PEs in all materials were between 7 to 8. The concentrations of NaCl, CaCl2 which showed the highest activities of PEs were 0.2~0.3M NaCl, 50 mM CaCl2 in Korean cabbage and raddish, 0.05 M NaCl, 20 mM CaCl2 in garlic and 0.2 M NaCl, 20 mM CaCl2 in ginger. 2. The specific activities and the optimum pHs of PGs were 1.5 unit/mg protein and pH 4.5 in Korean cabbage, 1.6 unit/mg protein and pH 4.5~5.5M in Korean raddish, 0.06 unit/mg protein and pH 3.0~3.5M in garlic, and 0.06 unit/mg protein and CaCl2 in ginger. The concentrations of NaCl, CaCl2 which showed the highest activities of PGs were 0.1~0.2M NaCl and 0.15~0.2mM mM CaCl2 in all materials. 3. The specific activities and the optimum pHs of PODs in Korean cabbage, Korean raddish, garlic and ginger were 71.3 unit/mg protein ; pH 6.0. 769 unit/mg protein ; pH 5.5, 1.09 unit/mg protein ; pH 4.5 and 12.7 unit/mg protein ; pH 5.0~5.5M, respectively. POD activities were not decreased in Korean cabbage, but decreased in Korean raddish by the increase of NaCl, CaCl2 concentrations. In garlic and ginger, POD activities were a little slightly affected by the increase of NaCl, CaCl2 concentrations.