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Progress in Understanding Metabolic Mechanisms of Ethyl Carbamate Precursors in Fermented Alcoholic Beverages

JIAO Zhihua, CHEN Qihe*   

  1. College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
  • Online:2016-12-15 Published:2016-12-21

Abstract: Ethyl carbamate (EC), commonly found in fermented alcoholic beverages, has been verified to be a multisite
carcinogen in experimental animals and a potential carcinogen to humans. Because of its threat to human safety, the
presence of EC may be a big challenge for the alcoholic beverage industry. EC primarily results from the reaction of ethanol
and compounds containing carbamyl groups. The main EC precursors are commonly generated from arginine metabolism
by Saccharomyces cerevisiae or Lactobacillus accompanied by the fermentation process. This review comprehensively
summarizes the metabolic mechanisms of urea, citrulline, and arginine, which may shed light on new strategies for reducing
EC. Meanwhile, this paper presents future prospects of research in this field.

Key words: ethyl carbamate, urea, citrulline, arginine, metabolic mechanism

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