| :In order to investigate the changes of flavonoids in Xanthoceras sorbifolium Bunge kernels from different origins, 60 samples from Weifang, Shandong province and 58 samples from Dalian, Liaoning province were used as raw materials, and the flavonoids composition and contents were detected by LC-MS/MS method, and the differences of flavonoids content from two origins were compared and analyzed. The results showed that 5 kinds of flavonoids were detected in 118 Xanthoceras sorbifolium Bunge kernels, among which the content of rutin was 1.422-40.704 μg/g, the content of epigallocatechin was 2.513-6.406 μg/g, the content of gallocatechingallate was 1.994-4.574 μg/g, the content of dihydroquercetin was 1.102-4.452 μg/g, and the content of gallocatechin was 0.806-4.057 μg/g. Rutin content was the highest, followed by epigallocatechin, gallocatechingallate, dihydroquercetin and gallocatechin. The total flavonoids content of kernels from Weifang, Shandong province was between 10518 μg/g and 25.445 μg/g, and the total flavonoids content of WF927 was the highest, the total flavonoids content of kernels from Dalian, Liaoning province was between 8.347 μg/g and 52.087 μg/g, and the total flavonoids content of DL392 was the highest. The content of flavonoids was significantly different between two origins. The average total flavonoids content in Xanthoceras sorbifolum Bunge kernel from Dalian, Liaoning province (19.491 μg/g) was significantly higher than that from Weifang, Shandong province(16.320 μg/g). 118 Xanthoceras sorbifolium Bunge kernel from two origins had the highest total content of flavonoids in DL392 (52.087 μg/g), DL395 (43.711 μg/g) and DL347 (40481 μg/g). |
