The hydroxylated derivatives of benzoic and cinnamic acids are known as phenolic acids. Vanillic acid (4-hydroxy-3-methoxybenzoic acid, Figure 1) is a dietary phenolic compound found in plants and fruits (Duke, 1992) and an intermediate in the production of vanillin from ferulic acid (Lesage-Meessen, 1996; Civolani, 2000). Additionally, vanillic acid is a metabolic product of caffeic acid that ...

plant phenolics have high reducing capacity which can be exploited in the synthesis of nanomaterials. in the present study, phytoreductant vanillic acid is used to produce and coat silver nanoparticles. the effects of ag nanoparticles on the unicellular green algae d. salina were then investigated. under optimum  ph and temperature, silver ions were reduced to silver metal by vanillic acid. the...

The edible mushroom Lentinula edodes (shiitake) contains many bioactive compounds. In the present study, we cultivated L. edodes mycelia in solid medium and examined the hot-water extract (L.E.M.) for its suppressive effect on concanavalin A (ConA)-induced liver injury in mice. ConA injection into the tail vein caused a great increase in the serum aspartate aminotransferase (AST) and alanine am...

A species of the bacterial genus Flavobacterium is capable of synthesizing a polysaccharide or mixture of polysaccharides when grown in a medium of a-conidendrin or vanillic acid as a sole carbon source. The polysaccharide hydrolysate consists of D-galactose, D-glucose, D-mannose, D-ribose and L-rhamnose as determined by paper chromatography. This organism has the unique characteristic of growi...

A method for analyzing phenolic acids and polyphenols by means of resonant two-photon ionization (R2PI) mass spectrometry coupled with laser desorption and supersonic jet cooling is described. The R2PI spectra of gallic acid, 3-O-methylgallic acid, protocatechuic acid, syringic acid, vanillic acid, and trans-resveratrol are vibronically resolved and distinct to allow for unambiguous identificat...

Aim: The aim of the study was Identification and quantification phenolic compounds, total flavonoides content antioxidant potential flower buds, foliages, bark root a perennial herb, Calligonum polygonoides (Phog) Thar Desert. Methodology: methanolic extracts different plant parts C. were subjected to LC-MS/MS (Waters Acquity UPLC-PDA, TQD) analysis for identification spectrophotometric assay f...

Plant phenolics have high reducing capacity which can be exploited in the synthesis of nanomaterials. In the present study, phytoreductant vanillic acid is used to produce and coat silver nanoparticles. The effects of Ag nanoparticles on the unicellular green algae D. Salina were then investigated. Under optimum  pH and temperature, silver ions were reduced to silver metal by vanillic acid. The...

Synthesis of molecularly imprinted polymers vanillic acid and extraction from spiked blood serumShowkat Ahmad Bhawani, Salma Bakhtiar, Rachel Roland, Syed Rizwan Shafqat, Mohamad Nasir Ibrahim

We report quantitative data on beta-glucuronidase- and sulfatase-hydrolyzable conjugates of homovanillic acid, 3,4-dihydroxyphenylacetic acid, p-hydroxyphenylacetic acid, and vanillic acid in the urine of 20 apparently normal and healthy control persons and of three patients with neuroblastoma. We used organic solvent extraction and capillary gas chromatography. There was considerable person-to...

0308-8146/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.foodchem.2010.05.115 * Corresponding author. Tel.: +43 1 47654 6250; fa E-mail address: [email protected] ( Nine red and three black rice varieties from Thailand, China and Sri Lanka were analysed to determine their proximate composition and their physicochemical and antioxidant properties. Four groups of rice varietie...