Abstract
The majority of the flavours and fragrances used worldwide are produced by chemical synthesis at low price. However, consumers prefer natural compounds because of increasing health and nutrition awareness in routine life. Hence, biotransformation is an alternative process to produce natural aroma compounds. Microorganisms have been gradually used more to produce natural aroma compounds with various applications in food, agriculture and pharmaceutical industries. This paper reviews the role of microorganisms in the transformation of ferulic acid to 4-vinyl guaiacol. The microbial processes based on biocatalytic method are discussed in terms of their advantages over chemical synthesis, plant cell cultures and enzyme catalyzed reactions. Thus, the transformation of ferulic acid by microorganisms could have possible use in food, pharmaceutical industry and become an increasingly important platform for the production of natural aroma compounds.
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