Studies on Improvement of Citrus unshiu Juice Quality and Utilization of Peels

Part I. The difference in qualities between juices of Cityus unshiu processed by In-Line juice extractor and by Chopper pulper juice extractor

Abstract

During the harvest season from 1973 to 1974, we examined the difference of juices qualities processed by In-Line juice extractor and Chopper pulper juice extractor.
The In-Line juice extractor was more usefull than the Chopper pulper juice extractor, but the yield of juice was less than that of another one.
The contents of pulp, flavanones and hesperidin in the juice (CPJ) processed by the Chopper pulper juice extractor were higher than that processed by the In-Line juice extractor (ILJ).
Essential oil content in ILJ was about twenty times of that in CPJ. This was marked difference in the qualities between ILJ and CPJ.
ILJ was more yellowish than CPJ.
The visual absorption of carotenoid pigments in petroleum ether extracted from CPJ was higher than that from ILJ.