the steroidal alkaloids whose hydrolysate is solancarpidine in Solalum nigrum L has been found mainly in its immature fruits, but a little in stems and leaves.

• 以澳洲茄胺为苷元的甾体类生物总碱主要富集在龙葵未成熟果实中，龙葵茎叶内含量小。