Amount Of Vanillin Research Articles

Fragrant Finishing of Cotton Fabric Using β-Cyclodextrin

The goal of the current research is the development of an approach that anchors b-cyclodextrin (b-CD) and vanillin fragrance to cotton fabrics simultaneously using traditional pad-dry-cure and pad-dry-batch processes. 2-hydroxypropyl-b-cyclodextrin (HP-b-CD) was mixed with vanillin in water at room temperature and the resultant complex was then applied on the fabric with the use of two crosslinking agents, i.e. glyoxal and a commercial CIBA Knittex® FA CONC. The effects of the amount of HP-b-CD and the type of crosslinking agents on the amount of vanillin deposited on the fabric and its release rate were investigated using UV spectrophotometry.

The Nature of Induced Lignin in Carrot (Daucus carota L.) Callus Cells Elicited with Hot Water Extracts from Conidia of Botrytis cinerea.

Carrot callus cells showed a positive reaction to phloroglucinol-HCl after eliciting with hot-water extract from conidia of Botrytis cinerea. The positive reaction reflected increases in the content of thioglycolic acid lignin and in the activity of phenylalanine ammonia-lyase. Alkaline nitrobenzene oxidation of thioglycolic acid lignin eliminated both ρ-hydroxybenzoic acid and vanillin. The amount of ρ-hydroxybenzoic acid increased after eliciting with hot-water extract of conidia, but the amount of vanillin did not increase. The only phenolic substance liberated from thioglycolic acid lignin by alkaline hydrolysis was ρ-hydroxybenzoic acid and the amount was also increased by elicitation. The phenolic substances in dioxane lignin were ρ-hydroxybenzoic acid, vanillin, vanillic acid, and syringaldehyde, but only the amount of ρ-hydroxybenzoic acid was increased after elicitation. Phenolic substances liberated from cell wall materials by alkaline hydrolysis were predominantly ρ-hydroxybenzoic acid; ρ-hydroxybenzoic acid in particular increased in cell wall materials from cells elicited. The increased ρ-hydroxybenzoic acid formed ester-bonds via its hydroxyl and carboxy groups to cell wall materials. Induced lignification in cultured carrot callus cells indicated an increase of ester-bonded ρ-hydroxybenzoic acid in lignin precursor or wall polysaccharides rather than de novo synthesis of lignin.