岐阜県産黒米からのアントシアニン系色素の抽出溶媒の検討

An Examination of Optimal Extraction Solvents for Anthocyanin Pigments
from Black Rice Produced in Gifu


小野廣紀	杉原菜穂	廣瀬裕子	片桐久美子
Kouki ONO	Naho SUGIHARA	Yuko HIROSE	and Kumiko KATAGIRI

Abstract

This paper describes the process for finding an optimum solvent for extracting anthocyanin pigments from black rice. Water, trifluoroacetic acid (TFA), formic acid, ethanol, and methanol containing hydrochloric acid (HCl) were tested as solvents for the extraction of anthocyanin pigments from black rice. Methanol containing HCl gave the highest value of total anthocyanin pigment contents compared to the other solvents. Therefore, methanol containing HCl proved to be the best solvent for the extraction of anthocyanin pigments from black rice. This solvent can be applied to the extraction of anthocyanin pigments from other food samples.