OBJECTIVE

2

To comprehensively evaluate the quality of

Eriobotrya japonica

leaves from different producing areas.

METHODS

2

The contents of alcohol-soluble extracts were determined by hot-dipping method using 30 batches of

E. japonica

leaves from different producing areas as samples. The contents of total flavonoids and total triterpene acids were determined by ultraviolet spectrophotometry. The contents of five kinds of triterpenic acids （euscaphic acid，crataegolic acid，corosolic acid，oleanolic acid and ursolic acid） were determined by HPLC. The quality of

E. japonica

leaves from different producing areas was comprehensively evaluated by using entropy weight technique for order preference by similarity to an ideal solution （TOPSIS）. The bivariate correlation analysis of

E. japonica

leaves was conducted by SPSS 22.0 software in terms of weight， comprehensive evaluation value， the content of alcohol-soluble extract， the contents of total flavonoids， total triterpene acids and five triterpenic acids.

RESULTS

2

The contents of alcohol

-soluble extract in 30 batches of

E. japonica

leaves were （24.56±0.08）%-（34.85±0.13）%； the contents of total flavonoids were （4.69±0.11）-（14.23±0.27） mg/g； the contents of total triterpene acid were （27.58±0.59）-（63.95±1.27） mg/g； the contents of euscaphic acid， crataegolic acid， corosolic acid， oleanolic acid and ursolic acid were （0.728±0.011）-（6.064±0.063）， （0.526±0.013）-（3.245±0.022）， （1.222±0.025）-（8.807±0.094）， （0.856±0.021）-（2.931±0.075）， （4.704±0.087）-（11.806±0.283） mg/g， respectively. The analysis result of entropy weight TOPSIS method showed that the top three samples with comprehensive evaluation values were S14 （Huotian Town， Yunxiao County， Zhangzhou， Fujian）， S19 （Qinnan District， Qinzhou， Guangxi） and S29 （Guoyang County， Bozhou， Anhui）. Comprehensive evaluation of

E. japonica

leaves was positively correlated with the contents of five kinds of triterpenic acids， such as euscaphic acid， crataegolic acid， corosolic acid， oleanolic acid and ursolic acid （

P

＜0.01）. The weight of

E. japonica

leaves was positively correlated with the comprehensive evaluation value （

P

＜0.01）.

CONCLUSIONS

2

The qualities of

E. japonica

leaves from different producing areas are very different. Among them， the qualities of

E. japonica

leaves from Huotian Town， Yunxiao County， Zhangzhou of Fujian， Qinzhou Qinnan District of Guangxi， and Bozhou Guoyang County of Anhui are relatively better. The weight of

E. japonica

leaves is positively correlated with their quality.