1961 年 81 巻 7 号 p. 1000-1002
Acid hydrolysis of pectin-II, isolated from the fruit rind of Citrus Unshiu MARCOVITCH, gave an acid substance which was identified as an oligogalacturonic acid consisting of eight D-galacturonic acid residues, from the formation of methylglycoside methyl ester and acetate, and from the result of periodate oxidation.