Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 ml 0.05 0.00 0.11 0.03
mol/100 ml 3.31e-07 0.00 7.96e-07 2.45e-07

Values calculated by aggregating data from 15 different samples from 3 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Protocatechuic aldehyde mg/100 ml 0.05 0.00 0.11 0.03
mol/100 ml 3.31e-07 0.00 7.96e-07 2.45e-07

Original Content Values Used to Produce Means

Robbins R.J., Bean S.R. (2004) Development of a quantitative high-performance liquid chromatography-photodiode array detection measurement system for phenolic acids. Journal of Chromatography A 1038:97-105 PubMed (15233525)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.00 mg/100 ml Red wine - Vendor "Sutter Home" - USA - Zinfandel 1999 yes 6
0.00 mg/100 ml Red wine - Vendor "Vendange" - USA - Merlot 2000 yes 3
0.00 mg/100 ml Red wine - Vendor "Gallo" - USA - Merlot 2001 yes 3
0.00 mg/100 ml Red wine - Vendor "Ch√Ęteau Montet" - France - Bordeaux 2001 yes 3
Rodriguez-Delgado M.A., Gonzalez-Hernandez G., Conde-Gonzalez J.E., Perez-Trujillo J.P. (2002) Principal component analysis of the polyphenol content in young red wines. Food Chemistry 78:523-532
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.04 mg/100 ml Spanish red wine - South Tenerife Island - Abona - Listan Negro 1999 yes 5
0.04 mg/100 ml Spanish red wine - South Tenerife Island - Valle de Guimar - Listan Negro 1999 yes 9
0.07 mg/100 ml Spanish red wine - North Tenerife Island - Valle de la Orotava - Listan Negro 1999 yes 11
0.06 mg/100 ml Spanish red wine - North Tenerife Island - Tacoronte-Acentejo - Listan Negro 1999 yes 13
0.07 mg/100 ml Spanish red wine - North Tenerife Island - Ycoden Daute Isora - Listan Negro 1999 yes 11
0.03 mg/100 ml Spanish red wine - Lanzarote Island - Listan Negro 1999 yes 6
Rodriguez-Delgado M.A., Malovana S., Perez J.P., Borges T., Montelongo F.J.G. (2001) Separation of phenolic compounds by high-performance liquid chromatography with absorbance and fluorimetric detection. Journal of Chromatography A 912:249-257 PubMed (11330794)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.06 mg/100 ml Spanish red wine 1 - Canary Islands yes 1
0.06 mg/100 ml Spanish red wine 2 - Canary Islands yes 1
0.11 mg/100 ml Spanish red wine 3 - Canary Islands yes 1
0.08 mg/100 ml Spanish red wine 4 - Canary Islands yes 1
0.06 mg/100 ml Spanish red wine 5 - Canary Islands yes 1