[目的]对影响葡萄品质的理化指标进行简化,提高葡萄品质的检测效率.[方法]通过主成分分析、相关性分析、聚类分析的数学方法对所测得的105个葡萄品种的10个理化指标进行简化,从而简化影响葡萄品质的理化指标.[结果]将反映葡萄品质的10个理化指标简化为5个指标,分别为可溶性固形物、固酸比、总酸、果胶和纤维素,经初步分析,这5个指标能够代表葡萄的甜度、酸度、酸甜度、涩味和果实硬度.[结论]可溶性固形物、固酸比、总酸、果胶和纤维素这5个指标基本可反映葡萄的品质.%[ Objective ] The purpose of this project was to simplify the physicochemical indexes for the quality of grape, thus improving the testing efficiency of grape quality. [ Method ] Ten physicochemical indexes of 105 varieties were simplified among the principal components analysis, correlation analysis and cluster analysis. [ Result ] The results showed that the ten tested indexes were finally simplified into 5 indexes, which were soluble solid content, ratio soluble solid to acid, total acidity content, pectin, and cellulose. After preliminary analysis, the five indexes can reflect grape' s sweetness, acidity, and sourness, astringency and fruit hardness. [ Conclusion ] Abstractly, the 5 indexes predigested basically can reflect the physicochemical quality of table grape.
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