食品中の防腐剤に関する研究 (第3報)
赤外部吸収スペクトルによるソルビン酸の定性定量法について
1964 年 5 巻 5 号 p. 368-372
詳細
1964 年 5 巻 5 号 p. 368-372
Sorbic acid in foodstuffs has been determined UV-spectrometrically. However, the acid shows only one absorption band in UV region and its shift and being masked by interfering substances reduce the accuracy and precision of the analysis.
In the present report, studies on the infrared spectrometric analysis of the acid are described. The results obtained are as follows:
1. Characteristic absorption of sorbic acid in carbon tetrachloride in IR-region provides an IR spectrometric method of analysis of the acid.
2. For the quantitative analysis, 1690cm-1 and 1000cm-1 are useful as key bands for the acid.
3. The interfering effects of food additives and of natural substances on the analysis have, also, been investigated.
