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Dr. Duke's Phytochemical and Ethnobotanical Databases
U.S. Department of Agriculture
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NO-Inhibitor

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List of activity chemicals.
Click on column headings to sort table by that column. *Unless otherwise noted all references are to (Duke, 1992)
Chemical Name Dosage Reference
(+)-CATECHIN IC11=250 uM *
AJOENE IC50=2.5-5 uM *
ALLICIN IC50=2.5-5 uM *
ANDROGRAPHOLIDE IC50=36 uM *
BOLDINE *
BROUSSOCHALCONE-A *
CITRAL *
CURCUMIN *
DELPHINIDIN IC78=250 uM *
DIOSMETIN EC50=19 uM *
EMODIN IC50=60.7 uM *
EPICATECHIN *
GALLIC-ACID IC-26=250 uM *
GAMMA-TOCOPHEROL *
INDOLE-3-CARBINOL *
KAEMPFEROL IC50=13.9 uM *
LUTEOLIN *
QUERCETIN IC50=20 uM *
QUERCETIN IC>50=125 uM *
TOCOPHEROL *
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List of Activity Plants.
Click on column headings to sort table by that column.
Plant Name Common Name Chemical Count Total Parts Per Million
Quercus robur English Oak 2 0
Quercus rubra Northern Red Oak 1 0
Quercus velutina Black Oak 1 0
Rheum officinale Chinese Rhubarb 3 12, 654.30009841919
Rheum palmatum Chinese Rhubarb 3 14, 965
Rheum rhabarbarum Rhubarb 4 53
Rhododendron dauricum Chinese Alpenrose 2 0
Rhododendron ponticum Pontic Alpenrose 2 0
Rhus coriaria Sicilian Sumac; Sumac; Tanner's Sumac 2 0
Rhus toxicodendron Poison Ivy 2 0
Rhynchosia minima Burn Mouth Vine 1 0
Ribes nigrum Black Currant 4 13, 800
Ribes uva-crispa Gooseberry 2 56
Ricinus communis Castorbean 4 459
Robinia pseudoacacia Black Locust 1 0
Rosa canina Rose; Dogbrier; Dog Rose 3 0
Rosa centifolia Cabbage Rose 2 0
Rosa damascena Damask Rose 2 0
Rosa gallica French Rose 2 0
Rosa multiflora Multiflora Rose 1 0