초록

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The persimmon puree was hydrolyzed with commercial polysaccharide hydrolyzing enzymes, Viscozyme and Celluclast and jam was prepared with the enzyme treated persimmon juice by addition of pectin. The textural characteristics of the jam were studied for the effects of pectin addition and storage temp...

The persimmon puree was hydrolyzed with commercial polysaccharide hydrolyzing enzymes, Viscozyme and Celluclast and jam was prepared with the enzyme treated persimmon juice by addition of pectin. The textural characteristics of the jam were studied for the effects of pectin addition and storage temperature. When the persimmon jam was prepared with the enzyme treated juice with addition of pectin(2.2∼3.0%), the hardness of the go] was stabilized at the addition level of more than 2.8% as measured by %sag. The hardness, cohesiveness, adhesiveness, and gumminess were also significantly increased as the amount of pectin addition increased, whereas the cohesiveness and elasticity did not change significantly. The gel prepared with the puree hydrolyzed with Celluclast generally showed higher hardness, gumminess and adhesiveness and less cohesiveness and elasticity than those treated with Viscozyme. Higher temperature (17$^{\circ}C$) caused a significant decrease in most of the textural properties except elasticity. Results of sensory test showed the orange colors was much improved by the Celluclast treatment, while other characteristics such as total acceptability and texture were not significantly different.

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