한국산 비파과실을 이용하여 주스로서의 활용도를 높이기 위한 일환으로 비파주스를 제조하여 그 이화학적 특성을 분석한 결과는 다음과 같다. 생과 상태로 파쇄하여 압착ㆍ착즙을 하였을 경우 pH 3.4, 당도 8.5 Brix, 총산 0.36% 및 수율 53.2%로 나타났으며, 증기로 데치기한 후 압착ㆍ착즙한 경우 pH 3.6, 당도 8.0 Brix, 총산 0.34% 및 수율 57.4%로 나타났다. 또한 비파과즙을 여과 후 청징(A), 과실을 50일간 냉

In order to enhance the availability of Korean loquat fruit, loquat juice was manufactured and its physicochemical characteristics are measured. The juice of raw fruit and pressed juice after blanching with steam that the pH, sugars, total acids and yields were 3.4, 3.6, and 8.5, 8.0 Brix, and 0.36, 0.34%, and 53.2, 57.4% respectively. Four groups of juices were processed as followed. A ; juice of clarified after filteration, B ; pressed and filtered juice of raw fruit in refrigerated for 50 days, C ; clarified juice of heated at 90 for 2 min., D ; clarified juice of blanched and pressed with raw fruit. Total acids, pH and sugars of A, B, C and D juices were 0.27, 0.35, 0.29 and 0.28%, and 3.80, 3.10, 3.68 and 3.71, and 7.5, 8.5, 8.0 and 8.2 Brix, respectively. Juice of B was higher total free sugar and organic acid than others. The chromaticity of D juice was stable than others. In the sensory test of loquat juice, that the product showed excellent result at 11 Brix and pH 3.78 when 4% of fructose and 0.05% of citric acid added.

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