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Dr. Duke's Phytochemical and Ethnobotanical Databases
U.S. Department of Agriculture
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Tyrosinase-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
CUMINALDEHYDE ID50=0.05 mM *
GLABRIDIN *
KAEMPFEROL ID50=230 uM *
P-COUMARIC-ACID ID50=3,650 uM *
P-HYDROXYBENZALDEHYDE ID50=1.2 mM *
P-HYDROXYBENZALDEHYDE ID50=1,200 uM *
P-HYDROXYBENZYL-ALCOHOL ID50=650 uM *
PROTOCATECHUIC-ACID ID60=0.5 uM/ml *
QUERCETIN ID50=70 uM *
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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
Ribes nigrum Black Currant 7 0
Ribes uva-crispa Gooseberry 1 0
Ricinus communis Castorbean 3 0
Robinia pseudoacacia Black Locust 2 0
Rosa canina Rose; Dogbrier; Dog Rose 2 0
Rosa centifolia Cabbage Rose 1 0
Rosa damascena Damask Rose 4 0
Rosa gallica French Rose 1 0
Rosa spp Rose Hips 1 0
Rubus fruticosus Blackberry 1 0
Rubus idaeus Red Raspberry; Raspberry 6 0
Rubus parviflorus Salmonberry; Thimbleberry 2 0
Rubus spectabilis Salmonberry 2 0
Rumex acetosa Garden Sorrel 1 0
Rumex crispus Curly Dock; Lengua De Vaca; Yellow Dock; Sour Dock 1 0
Ruta graveolens Rue 2 0
Salix alba White Willow 2 0
Salvia officinalis Sage 2 0
Salvia sclarea Clary Sage 3 1, 840
Salvia sp. Chia 1 19