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STUDY ON THE CHANGINC REGULARITY AND CORRELATION OF VITAMIN C AND SUGAR IN THE PERIOD OF GROWTH, RIPENESS AND STORAGE OF THE LATE-MATURING APPLE IN NINGXIA

Xu Dechang Lu Jun Zhou ping  
Research results showed that the content of vitamin C,reducing sugar and catalase increased with the inflation of fruit in the period of growing, ripening and storing stage in the case of Ralls and White Winter Pearmain; the accumulation of these ingredidnts reached the highest a month before the apples were picked and then declined sliehtly, but the highest peak of the activity of catalase appeared earlier than of the firsttwo ones. In the rifrigeration period, fhecontent of vitamin C and reducingsugar declined gradually. Two active peaks of catalase appeared to tallywity the sudden changing period of respiration and the senile stage of thefruit.
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