In this study,51 accessions of mature persimmon fruits were used as materials to investigate the correlation between characteristics of tannin cells,and total phenolics and condensed tannins contents. The sizes and quantities of the tannin cells were observed with direct extrusion of soft persimmon fruits. A calculating method for determining the volume of tannin cells was explored in unit mass of mature fruits flesh. The total phenolics and condensed tannins contents were measured. The results showed that 1) The size and quantity of tannin cells in PCA ( pollination constant astringent) cultivars were larger,while those of Chinese PCNA ( pollination constant nonastringent ) and Japanese PCNA cultivars except for 'Suruga'were smaller. Part of the PCA cultivars was similar to PVA ( pollination variant astringent) and PVNA (pollination variant nonastringent) cultivars. 2) There was extreme significant (P <0. 01) correlations between the volume of tannin cells and total phenolics content as well as condensed tannins contents of mature persimmon fruit, respectively. 3) Cluster results showed that the volume of tannin cells was able tobe used as an index for classification of different types of persimmon cultivars.
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