1. Vanillin–Bioconversion and Bioengineering of the Most Popular Plant Flavor and Its De Novo Biosynthesis in the Vanilla Orchid 
Nethaji J. Gallage, Birger Lindberg Møller 
Molecular Plant 
Volume 8, Issue 1, Pages (January 2015)
DOI: /j.molp
Copyright © 2015 The Author Terms and Conditions

2. Figure 1
Chemical Structure of Vanillin (4-Hydroxy-3-Methoxybenzaldehyde).
Molecular Plant 2015 8, 40-57DOI: ( /j.molp )
Copyright © 2015 The Author Terms and Conditions

3. Figure 2
Different Routes to Natural Vanillin that Are Available or Soon to Be Available on the Market.
Molecular Plant 2015 8, 40-57DOI: ( /j.molp )
Copyright © 2015 The Author Terms and Conditions

4. Figure 3 Possible Bioconversion Routes of Ferulic Acid to Vanillin
(A) CoA-independent conversion of ferulic acid to vanillin via a retro-aldol reaction.
(B) CoA-dependent conversion of ferulic acid to vanillin via a retro-aldol reaction.
(C) CoA-dependent β-oxidation of feruloyl-CoA into vanillic acid.
(D) Non-oxidative decarboxylation of ferulic acid to 4-vinylguaiacol. No evidence for conversion of 4-vinylguaiacol into vanillin has been obtained.
(E) Conversion of ferulic acid into vanillin involving a reducing step.
Molecular Plant 2015 8, 40-57DOI: ( /j.molp )
Copyright © 2015 The Author Terms and Conditions

5. Figure 4
The CoA-Dependent Catabolism of Ferulic Acid Via Vanillin in Amycolatopsis sp. 39116.
Molecular Plant 2015 8, 40-57DOI: ( /j.molp )
Copyright © 2015 The Author Terms and Conditions

6. Figure 5 Eugenol Degradation Pathway in Pseudomonas.
Molecular Plant 2015 8, 40-57DOI: ( /j.molp )
Copyright © 2015 The Author Terms and Conditions

7. Figure 6
Engineered De Novo Vanillin Biosynthesis from Glucose in the Yeasts S. cerevisiae and Schizosaccharomyces pombe.
Molecular Plant 2015 8, 40-57DOI: ( /j.molp )
Copyright © 2015 The Author Terms and Conditions