Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 ml 0.05 0.00 0.08 0.02
mol/100 ml 3.10e-07 0.00 5.19e-07 1.25e-07

Values calculated by aggregating data from 22 different samples from 6 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Protocatechuic acid mg/100 ml 0.05 0.00 0.08 0.02
mol/100 ml 3.10e-07 0.00 5.19e-07 1.25e-07

Original Content Values Used to Produce Means

Jandera P., Skerikova V., Rehova L., Hajek T., Baldrianova L., Skopova G., Kellner V., Horna A. (2005) RP-HPLC analysis of phenolic compounds and flavonoids in beverages and plant extracts using a CoulArray detector. Journal of Separation Science 28:1005-1022 PubMed (16013828)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.00 mg/100 ml Beer - Kronenburg 1664 - France yes 1
0.00 mg/100 ml Beer - Bud Budweiser - Italy yes 1
0.01 mg/100 ml Beer - Zipfer Original, premium - Austria yes 1
2.00e-03 mg/100 ml Beer - Veltins - Germany yes 1
0.00 mg/100 ml Beer - Heineken - Netherlands yes 1
0.03 mg/100 ml Beer - Budweiser Burgerbrau - Czech Republic yes 1
0.02 mg/100 ml Beer - Stella Artois Premium - Belgium yes 1
0.03 mg/100 ml Beer - Pilsner Urquell - Czech Republic yes 1
0.01 mg/100 ml Beer - Amstel - Netherlands yes 1
8.00e-03 mg/100 ml Beer - Pilot - Sweet wort - Research institute - Czech Republic no 1
0.03 mg/100 ml Beer - Bitburger Premium Pils - Germany yes 1
0.01 mg/100 ml Beer - Pilot - Hopped wort - Research institute - Czech Republic no 1
Montanari L., Perretti G., Natella F., Guidi A., Fantozzi P. (1999) Organic and phenolic acids in beer. LWT - Food Science and Technology 32:535-539 PubMed (25745209)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
7.00e-04 mg/100 ml Italian lager beer no 1
2.00e-03 mg/100 ml Italian lager beer no 1
Nardini M., Ghiselli A. (2004) Determination of free and bound phenolic acids in beer. Food Chemistry 84:137-143 PubMed (25308670)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.00 mg/100 ml Italian beer yes 1
0.00 mg/100 ml Austrian beer yes 1
0.00 mg/100 ml German beer yes 1
Floridi S., Montanari L., Marconi O., Fantozzi P. (2003) Determination of free phenolic acids in wort and beer by coulometric array detection. Journal of Agricultural and Food Chemistry 51:1548-1554 PubMed (12617582)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.08 mg/100 ml Italian lager beer yes 23
0.04 mg/100 ml Italian lager beer yes 1
Rehova L., Skerikova V., Jandera P. (2004) Optimisation of gradient HPLC analysis of phenolic compounds and favonoids in beer using a CoulArray detector. Journal of Separation Science 27:1345-1359
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.02 mg/100 ml light lager beer Platan 11 yes 1
0.02 mg/100 ml Lowenbrau premium yes 1
McMurrough I., Roche G.G., Cleary K.G. (1984) Phenolic acids in beers and worts. Journal of the Institute of Brewing 90:181-187 PubMed (25664918)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.03 mg/100 ml Beer, lager yes 1