A comprehensive review on vanillin: its microbial synthesis, isolation and recovery

Investigations on the Key Odorants Contributing to the Aroma of Children Soy Sauce by Molecular Sensory Science Approaches

“…Vanillin could be produced by microorganisms, such as bacteria, fungi, yeast or engineered microbial cells; its precursor was ferulic acid, present in the cell wall of wheat (6.6 g/kg), which was one of the materials of SS, or lignin, which exists in soybeans and wheat. The bioconversion of ferulic acid into vanillin occurs in both aerobic and anaerobic conditions [ 28 ].…”

Methylene Capping Facilitates Cross-Metathesis Reactions of Enals: A Short Synthesis of 7-Methoxywutaifuranal from the Xylochemical Isoeugenol

“…For instance, eugenol ( 1 ) and isoeugenol ( 2 ) occur in high concentrations in clove oil , and can be used for the production of vanillin ( 3 ) through fermentative processes on an industrial scale . Intermediates in such biotechnological processes are coniferyl alcohol ( 4 ), coniferyl aldehyde ( 5 ), and ferulic acid ( 6 ) . They could, in principle, also be used as starting materials in these processes, but out of these three compounds, only ferulic acid ( 6 ) is accessible from plant-based biomass such as wheat, rice, rye, barley, or maize straw in notable quantities .…”

“…7 Intermediates in such biotechnological processes are coniferyl alcohol (4), coniferyl aldehyde (5), and ferulic acid (6). 8 They could, in principle, also be used as starting materials in these processes, but out of these three compounds, only ferulic acid ( 6) is accessible from plant-based biomass such as wheat, rice, rye, barley, or maize straw in notable quantities. 9 Consequently, coniferyl alcohol (4) and coniferyl aldehyde (5) are by several orders of magnitude more expensive than the other 4-hydroxy-3-methoxybenzene xylochemicals eugenol (1), isoeugenol (2), vanillin (3), 10,11 and ferulic acid (6) when purchased through chemical retailers 12 (Figure 1).…”

The role of eugenol and ferulic acid as the competitive inhibitors of transcriptional regulator RhlR in P. aeruginosa

“…The aromatic compounds proposed for the present study are primarily microbial bioconversion products (catechol and protocatechuate) and subproducts obtained from bacterial bioconversion. In the specific case of the transformation of ferulic acid to obtain three principal bioproducts (vanillic acid, vanillin, and vanillic alcohol), and for other instances, the use of essential oils, such as eugenol and isoeugenol, has been suggested [7] , [8] , [9] , [10] . In addition, some aromatic compounds that participate in the β-ketoadipate pathway, such as hydroxybenzaldehyde and p-hydroxybenzoic acid, are safe for human consumption by the Food Drugs and Administration (FDA) [7] , [8] , [9] , [10] , [11] .…”

“…In the specific case of the transformation of ferulic acid to obtain three principal bioproducts (vanillic acid, vanillin, and vanillic alcohol), and for other instances, the use of essential oils, such as eugenol and isoeugenol, has been suggested [7] , [8] , [9] , [10] . In addition, some aromatic compounds that participate in the β-ketoadipate pathway, such as hydroxybenzaldehyde and p-hydroxybenzoic acid, are safe for human consumption by the Food Drugs and Administration (FDA) [7] , [8] , [9] , [10] , [11] . These compounds have protective effects, bioactive, anticancer, antioxidant, anti-inflammatory properties, antiviral and antibacterial activities.…”