Study of the acetaldehyde induced polymerisation of flavan-3-ols by liquid chromatography--ion spray mass spectrometry
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- 作者：Fulcrand ; Hé ; lè ; ne ; Doco ; Thierry ; Es-Safi ; Nour-Eddine ; Cheynier ; Vé ; ronique ; et. al.
- 关键词：Flavan-3-ols ; Acetaldehyde ; Catechin ; Epicatechin
- 刊名：Journal of Chromatography A
- 出版年：1996
- 出版时间：November 1, 1996
- 年：1996
- 卷：752
- 期：1-2
- 页码：85-91
- 全文大小：419 K
文摘
In some fruits, the loss of astringency has been attributed to the insolubilization of recombinated tannins, formed by reaction with acetaldehyde. This route has been investigated by on-line coupling of liquid chromatography with ion spray mass spectrometry (LC--ISP-MS). The results reported herein indicate that LC--ISP-MS can be successfully applied to tannin polymers and is very helpful in their identification. It also allows direct monitoring of the progress of polymerisation reactions. The mechanism of the acetaldehyde-induced polymerisation of flavan-3-ols has thus been demonstrated.