초록

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Abstract ▼ AI-Helper

The effect of gelatin concentration, pH of fruit juice and other factors for the enzymatic clarification of fruit juice by the use of polygalacturonase was studied. The proper addition of gelatin was much effected on clarification by polygalacturonase and optimum concentrations of gelatin for the en...

The effect of gelatin concentration, pH of fruit juice and other factors for the enzymatic clarification of fruit juice by the use of polygalacturonase was studied. The proper addition of gelatin was much effected on clarification by polygalacturonase and optimum concentrations of gelatin for the enzymatic clarification of Zugaru juice, Magnolia Gold juice, Golden Delicious juice, Jonagold juice, Jonathan juice, Campbell Early juice were 0.04, 0.01% 0.02%, 0.06% 0.01%, and 0.04%, respectively. Optimum pH for the clarification by the use of polygalacturonase and gelatin was $3.2{\sim}3.5$ contrary to optimum pH 4.8 of polygalacturonase for the hydrolysis of pectic acid. At the reaction temperature of $45^{\circ}C$ and polygalacturonase concentration of 0.01mg/ml, fruit juices were completely clarified by optimum addition of gelatin for 60min.