POTATO ANTHOCYANIN COLORING MATTER HAVING ANTIINFLUENZA VIRUS ACTIVITY

摘要

PROBLEM TO BE SOLVED: To obtain a potato anthocyanin coloring matter having activity against influenza viruses by using an acid or an acidic alcohol as an extractant in extracting an anthocyanin coloring matter from a colored potato tuber. SOLUTION: This potato anthocyanin coloring matter having activity against influenza viruses is characterized by extracting an ordinary cultivated species or a foreign cultivated species such as Solanum tuberosum ssp. andigena L. or S. phureja Juz. et Buk., containing the anthocyanin coloring matter in a skin part/flesh part or a variety obtained by hybridization from the ordinary cultivated species or the foreign cultivated species as a base and by advancing practical character amelioration of coloring matter concentration, disease endurance, yield, etc.