Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 ml 0.41 0.04 0.70 0.28
mol/100 ml 3.68e-06 3.63e-07 6.36e-06 2.58e-06

Values calculated by aggregating data from 4 different samples from 2 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Catechol mg/100 ml 0.41 0.04 0.70 0.28
mol/100 ml 3.68e-06 3.63e-07 6.36e-06 2.58e-06

Original Content Values Used to Produce Means

Lang R., Mueller C., Hofmann T. (2006) Development of a stable isotope dilution analysis with liquid chromatography - tandem mass spectrometry detection for the quantitative analysis of di- and trihydroxybenzenes in foods and model systems. Journal of Agricultural and Food Chemistry 54:5755-5762 PubMed (16881674)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.70 mg/100 ml Coffee A yes 1
0.54 mg/100 ml Coffee B yes 1
0.34 mg/100 ml Coffee C yes 1
Fujioka K., Shibamoto T. (2006) Quantitation of volatiles and nonvolatile acids in an extract from coffee beverages: correlation with antioxidant activity. Journal of Agricultural and Food Chemistry 54:6054-6058
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.04 mg/100 ml Coffee, regular yes 1