Free sugars and dietary fiber of celery.

概要

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The free sugar content in 100 g of celery was determined (from the measurement of various samples) to range between 752 and 980 mg. The ratios of individual sugar to total free sugar content were in the following order : fructose, the highest (40-50 %) > glucose > xylose > rhamnose >sucrose. The ratio of rhamnose, however, decreased with delay in harvesting time, while that of glucose increased. The content of dietary fiber, <I>i.e.</I> pectin, lignin, hemicellulose, and cellulose ranged from 1, 125 to 1, 580 mg per 100 g of celery. Dietary fiber was a little higher in content during the early stages of harvesting than during the later stages, and it was generally denser toward the interior of the stalk than near the exterior. Celery hardness was found by Rheolometer to exhibit no significant differences among the various samples. The brittleness of celery was higher in early and normal harvesting stage than in the later harvesting stage.
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