Effects of Schiff base formation and aldol condensation on the determination of aldehydes in rice wine using GC-MS

Ji Hye Han, Sang Mi Lee, Young Suk Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The Schiff base reaction and aldol condensation that occur during sample preparation can lead to the reduction of aldehyde content in the analysis of traditional Korean rice wine, makgeolli. The contents of aldehydes were decreased, whereas those of hydroxy carbonyl compounds were increased by increasing the pH. In the presence of added amino acids, the levels of aldehydes in makgeolli were reduced as the amount of the amino acid alanine increased. Also, the contents of hydroxyl carbonyl compounds were reduced by alanine addition as compared to the control. Therefore, the determination of aldehydes can be affected by pH and the amount of amino acids, which can vary during fermentation and storage of alcoholic beverages because pH and amino acids affect Schiff base formation and aldol condensation.

Original languageEnglish
Article number618
JournalMolecules
Volume22
Issue number4
DOIs
StatePublished - Apr 2017

Keywords

  • Alcoholic beverage
  • Aldehydes
  • Aldol condensation
  • Amino acids
  • pH
  • Schiff base formation

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