- 著者
-
大澤 実
桑畑 修
飯田 知彦
西釋 英章
田村 學造
吉澤 淑
- 出版者
- 公益財団法人 日本醸造協会
- 雑誌
- 日本醸造協会誌 (ISSN:09147314)
- 巻号頁・発行日
- vol.87, no.6, pp.465-469, 1992-06-15 (Released:2011-09-20)
- 参考文献数
- 9
- 被引用文献数
-
1
1
A method for the determination of furfurals (furfural and 5-hydroxymethylfurfural) in aged sake by gas chromatography was established. Five ml of sample was reacted with 4 ml of 2, 4-dinitro phenylhydrazine (2, 4-DNP) solution for 30 min at 80 °C. The solution was shaken with 30ml chloroform. The chloroform layer was concentrated to dryness in vacuo, and dissolved in 0.5 ml of 0.16% methyl-2-furfural-2, 4-DNP (internal Standard) in ethyl acetate. One μl of the solution was analyzed using a gas chromatograph (Shimadzu GC-14 A). This method will ensure determination of furfurals in aged sake with 104-108% recovery.The results of analysis on 44 samples aged for 3-20 years were: furfural 2-4 ppm, and 5-hydroxymethylfurfural 1-289 ppm. Furfurals were considered to be one of the characteristic components of aged sake.