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中文摘要：
以159个苹果品种为试材,探讨了鲜榨汁风味、可滴定酸含量、可溶性固形物含量、可溶性糖含量、固酸比及糖酸比之间的相互关系,明确了苹果鲜榨汁风味的适宜定量评价指标及其分级标准。苹果鲜榨汁风味值、可滴定酸含量、可溶性固形物含量、可溶性糖含量、固酸比和糖酸比离散度不同,变异系数在12.2%～60.7%;鲜榨汁可滴定酸含量和可溶性固形物含量均符合正态分布,在去掉两个拖尾品种后可溶性糖含量也符合正态分布,风味值近似正态分布;风味值、可滴定酸含量、固酸比和糖酸比之间存在极显著的一元线性关系或幂函数关系,决定系数（R2）高达0.8811～0.9740;可滴定酸含量、固酸比和糖酸比均为苹果鲜榨汁风味的适宜定量评价指标,其中以可滴定酸含量指标最为简便和准确;鲜榨汁可滴定酸含量、固酸比和糖酸比均可划分为5级（对应的鲜榨汁风味分别为甜、酸甜、酸甜适度、甜酸和酸）,5级的平均品种比例分别为3.35%、20.55%、40.67%、22.64%和12.79%。
英文摘要：
Using 159 cultivars of apple as samples,relationships among taste,titrable acids（Ta）, soluble solid（sSSo）,soluble sugar（sSSu）,soluble solids/titrable acid（sSSo/Ta）,and soluble sugar/titrable acids（SSu/Ta） of fresh apple juice were investigated,and the suitable quantitative evaluation indices for taste of fresh juice and their grading standards were established. The results denoted that：Taste value （Tv）,Ta,SSo,SSu,SSo/Ta,and SSu/Ta of fresh apple juice had different dispersion,their coefficient of variation were between 12.2% and 60.7%;Both Ta and SSo of fresh apple juice distributed normally, SSu also distributed normally after 2 cultivars were removed,while Tv distributed near normally;Among Tv,Ta,SSo/Ta,and SSu/Ta of fresh apple juice,there were highly significant simple linear equations or power functions with coefficient of determination up to 0.8811–0.9740;Ta,SSo/Ta,and SSu/Ta were all suitable quantitative evaluation indices for taste of fresh apple juice,among which Ta is the most handy and accurate one;Ta,SSo/Ta,and SSu/Ta of fresh apple juice were all divided into 5 grades（the corresponding taste of fresh apple juice were respectively sweet,sour-sweet,sour-sweet moderately, sweet-sour,and sour）,and the average cultivar ratio of the 5 grades were 3.35%,20.55%,40.67%, 22.64%,and 12.79%,respectively.
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