OBJECTIVE

2

To study the content changes of 5 chemical compositions in water extract and ethanol precipitate of different processed products of

Psoralea corylifolia

， and to preliminarily evaluate its hepatotoxicity.

METHODS

2

The water extracts from crude product of

P. corylifolia

and processed products by Leigong method， running water rinsing method， and salt stir-frying method were prepared， as well as the ethanol precipitates of processed products by Leigong method and salt stir-frying method were prepared. The contents of psoralenoside， isopsoralenoside， psoralen， isopsoralen and bakuchiol were determined by high-performance liquid chromatography and compared. The median lethal concentration （LC

50

） and maximum non-lethal concentration （MNLC） of each sample to wild-type zebrafish juveniles were calculated after 72 h of treatment with different concentrations of water extracts from raw product and processed products by running water rinsing method， Leigong method and salt stir-frying method， different concentrations of ethanol precipitates from processed products by Leigong method and salt stir-frying method， and the acetaminophen was used as the positive control. The basic morphology of wild-type zebrafish juveniles and the liver phenotype of transgenic zebrafish juveniles were observed after 72 h of treatment with the above samples （MNLC）. Pearson correlation analysis was used to evaluate the correlation between component content and hepatotoxicity.

RESULTS

2

Compared with the water extract of raw products， the contents of psoralenoside and isopsoralenoside in the water extract of different processed products were generally decreased （

P

＜0.05）， while the contents of psoralen， isopsoralen and bakuchiol in the ethanol precipitate of Leigong method and salt stir-frying products were significantly increased （

P

＜0.05）. The LC

50

of water extracts of crude product and processed products by running water rinsing method， Leigong method， salt stir-frying method， and ethanol precipitates of processed products by Leigong method and salt stir-frying method were 2.45， 5.00， 5.38， 1.55， 2.36， 0.64 g/L （calculated by crude drug）， and MNLC were 2.21， 4.53， 5.02， 1.37， 2.13， 0.53 g/L （calculated by crude drug）. Compared with the blank control group， the zebrafish juveniles in each sample treatment group showed different degrees of deformity， the liver relative fluorescence intensity was significantly weakened （

P

＜0.05 or

P

＜0.01）. Fat-soluble components such as bakuchiol， isopsoralen and psoralen were highly correlated with liver fluorescence intensity （

R

2

＞0.7）.

CONCLUSIONS

2

The processed products of

P. corylifolia

mainly compose of psoralenoside and isopsoralenoside after water extraction， the contents of psoralen， isopsoralen and bakuchiol increase after alcohol precipitation， and the hepatotoxicity is positively correlated with the contents of liposoluble compositions in

P. corylifolia

.