关键词: 主成分分析, 贮藏特性, 芒果

Abstract: The principle component analysis(PCA) was used for statistic analysis on eight direction signs of post-harvest mangoes. The results showed that all the direction signs were vested in tow parts:one was storage characteristic factor, the other was physiological factor. The storage characteristic was composed of VitC content, titratable acid content, losing rate and chlorophyll content, and the physiological factor was composed of SOD activity, LOX activity and MDA content. Their dedicative rate was 63.69% and 32.46%, respectively, and the accumulative proportion for the tow factors was 96.16%. It reflected the information for all direction signs essentially. The integrated evaluate model on these basics also showed that the storage quality was improved a bit within 10d and then declined rapidly. These reflections were coincident with the facts basically.

Key words: PCA, storage characteristic, mango