摘要
用直接碘量法测定鲜榨橙汁中Vc的含量,并研究了在不同存放条件下鲜榨橙汁中Vc含量的变化情况。结果表明,鲜榨橙汁中Vc含量较高,为51.27 mg/100 g;其Vc稳定性较高,避光、避氧冷藏10 h,Vc的保存率可为100%;同时,实验证明,用直接碘量法测定橙汁中Vc含量,其准确度与精确度均较高。
Direct iodimetric analysis was applied to determine the content of vitamin C in fresh orange juice, and the method was also used to study the Vc content variation in frensh orange juice which was kept in different conditions. The results showed that frensh orange juice was rich in Vc with high stability.The direct iodimetric analysis in this test was proved to be of high accuracy and precision.
引文
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