Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 g FW 0.02 1.00e-02 0.03 0.01
mol/100 g 1.11e-07 5.55e-08 1.67e-07 7.85e-08

Values calculated by aggregating data from 2 different samples from 1 unique publication.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Caffeic acid mg/100 g FW 0.02 1.00e-02 0.03 0.01
mol/100 g 1.11e-07 5.55e-08 1.67e-07 7.85e-08

Original Content Values Used to Produce Means

Ren H., Endo H., Hayashi T. (2001) Antioxidative and antimutagenic activities and polyphenol content of pesticide-free and organically cultivated green vegetables using water-soluble chitosan as a soil modifier and leaf surface spray. Journal of the Science of Food and Agriculture 81:1426-1432
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.03 mg/100 g FW Welsh onion - Allium sp - Organic no 1
0.01 mg/100 g FW Welsh onion - Allium sp - Conventional no 1