Abstract: The present invention relates to a composition including an anthocyanin-fucoidan complex formed by ionic bond between anthocyanin and fucoidan as an active ingredient, and more particularly, it is confirmed that the anthocyanin-fucoidan complex in which anion of the fucoidan, which is a natural extract having high biocompatibility and biodegradability, is ionically bonded with a cation of the anthocyanin improves the stability and the solubility of the anthocyanin even in acidic conditions in vivo, thereby increasing the immune activity in vivo and therefore it is intended to provide the anthocyanin-fucoidan complex as an immune enhancer, an immune-cancer agent and an anticancer adjuvant composition for alleviating side effects of anti-cancer agents.

Abstract: The present invention relates to a composition including an anthocyanin-fucoidan complex formed by ionic bond between anthocyanin and fucoidan as an active ingredient, and more particularly, it is confirmed that the anthocyanin-fucoidan complex in which anion of the fucoidan, which is a natural extract having high biocompatibility and biodegradability, is ionically bonded with a cation of the anthocyanin improves the stability and the solubility of the anthocyanin even in acidic conditions in vivo, thereby increasing the immune activity in vivo and therefore it is intended to provide the anthocyanin-fucoidan complex as an immune enhancer, an immune-cancer agent and an anticancer adjuvant composition for alleviating side effects of anti-cancer agents.