A STUDY ON THE PRESERVATION OF THE FRUITS OF ROSA ROXBURGHII TRATT

The harvest season for fruits of Rosa Roxburghii Tratt is concentrated at a very short time. When the harvest time is past, the refreshments using the fruits of Rosa Roxburghii as raw material will be shortage of supply. For this reason, since 1980, the author has studied the question of all the year round supply for the processing materials of Rosa Roxburghii. The experimental results have been obtained as follows:1. The fruit was picked when its maturity has been reached 90%. Then put into the polythene plastic bags and stored in 0°—5℃ chilling chamber. As a result, the supply period of the materials could be prolonged for two months.2. when the fruits were cutted into lumps fumigated with sulphur and dried in a simple baking house under the condition of controlled temperature and fumigated with sulphur once again, then packed into the polythene plastic bags and stored in the cold and dry room under room-temperature the fruits could be preserved for one year. At the end of the year, the lumps of fruit still contained 95% vitamin C and the color and perfume of the fruits were still be as the fresh ones.3. When the fresh fruits were stored in a large ventless hermetical-scaled container together with the sulfurous acid or sodium benzoate-sulfurous or sodium benzoate or edible alcohol solution, the fruits could be preserved for 10—12 months. All the fruits be kept the strong perfume and contained 69—86% vitamin C.