Vitamin C Vitamin C(ascorbic acid) is the most important therapeutic constituent in sea buckthorn berry, as it acts as an antioxidant and supports the integrity of the cell membrane. It has been found in practically all parts of the sea buckthorn plant: in berries juice (11.6–13.0 g/kg), in seeds (1.5 g/kg), and in leaves (up to 3.7 [...]