gpetrecca_log

Log

I want to do my paper on the difference in the concentration of resveratrol in wines from several of the various regions of France.

Extraction: http://www.google.com/patents/EP2124984A2?cl=en http://pubs.acs.org/doi/pdfplus/10.1021/jf000745o http://www.sciencedirect.com/science/article/pii/S0260877405005418# http://www.ruf.rice.edu/~siemann/pdf/SeimannCreasyAJEV92.pdf

http://bordeaux-undiscovered.co.uk/blog/2011/02/resveratrol-in-red-wine-found-to-boost-drug-for-breast-cancer/ http://www.hitachi-hitec.com/global/science/lc/img/chromaster_data9/cm_data9.pdf

=Summary=

Concentration of the Phytoalexin Resveratrol in Wine
• Reveratrol is a phytialexin found in grapes. • Orally administered resveratrol lowered the lipid levels in the liver of rats. • Wine has been shown to lower the serum levels in humans. • The concentration of resveratrol was measured in selected wines using HPLC and spectrophotometry. • Geographic origin, growing methods, grape variety and winemaking procedures all effected the resveratrol concentration. • The analysis of the wines indicated that resverstrol could be the active ingredient in wines causing the reduction of serum lipids. • Resveratrol was found in the skin of grapes. • It is been linked with disease resistance • Resveratrol in wine could be related therapeutic affects. • Consumption of red wine induced platelet hypoaggregation and an increase in HDL-cholesterol. • Trans resveratrol was extracted from room temperature three times with ethyl acetate. • It was combined and washed wit hdistilled water. • Half of the sample was injected in the HPLC. • A collected fraction of resveratrol was exposed for 45 minutes to 730 microW/cm^2 ultraviolet radiation. • It had a peak wavelength of 312nm. • It was converted to cis-resveratrol and the peak wavelength was 280-nm. • The wines gave a concentration range from 2.861 to less than 0.003 micromoles per liter. • Whites had a lower concentration than the red wines. • There is an average of 171 micrograms in a 750-mL bottle of wine. • There were significant differences between the regions that the wine was grown in.

[|Article]