The objective of this study is to provide a fundamental data to improve meals of the college foodservice operations serving more than 300 meals per day through evaluating changes in; total vitamin C contents, water contents, and pH, in the process of handling such foods as soybean sprout cooked and of fresh vegetable salads. This study, also, tried to identify nutrition reduction, step by step, to minimize nutrition loss.
1. In handing COOKED SOYBEAN SPROUTS, total vitamin C contents were higher after wash(1.54%㎎%) than other cooking methods adopted in university meals(1.08㎎%), however, total vitamin C contents was significantly lost during boiling step.
2. Significant loss of total vitamin C and water content in the FRESH VEGITABLE SALADS was detected in the process of washing and cutting vegitables. Especially, ´cabbage´ lost 20% of total vitamin C in the process of ´soaking in water´, which was one of preparation process.
3. Significant loss of vitamin C was observed after 6 hours of HOLDING AFTER COOKING but it can be reduced through holding under lower temparature, in case of soybean sprouts and fresh vegitable salads. pH became acidic as holding time expanded. WATER CONTENT of cooked soybean sprouts decreased up to 4 hours´ holding time, however, it increased when we checked at after 6 hours´ of holding time. Water content continuously decreased up to 6 hours of holding time in case of FRESH VEGITABLE SALADS with the statistically significance level.
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