硝酸酸化殿粉に関する研究 (第3報)
酸化殿粉の還元生成物
1961 年 81 巻 9 号 p. 1362-1366
詳細
1961 年 81 巻 9 号 p. 1362-1366
Starch oxidized with nitric acid shows ketone absorption at 285mμ but this absorption disappears after its reduction with sodium borohydride, while the absorption remained after catalytic reduction. Since this reduction product of the oxidized starch does not indicate high formation of uronic acid by acid decomposition, this ultraviolet absorption is considered to be a measure of reduction effect.
Acid decomposition of the reduction product indicated the presence of mannuronic acid and an unknown non-lactonized uronic acid, which was considered to be either allouronic or altronic acid.
