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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
ACETALDEHYDE ID50=43 ug/ml *
ANACARDIC-ACID *
ANISALDEHYDE ID50=0.32 mM *
ANISALDEHYDE ID50=380-970 uM *
ANISALDEHYDE ID50=320 uM *
ANISE-ALCOHOL ID50=5,300 uM *
ANISIC-ACID ID50=680 uM *
ANISOLE ID50=7,100 uM *
ARBUTIN IC50=40 uM *
BENZALDEHYDE ID50=820 uM *
BENZALDEHYDE ID50=87 ug/ml *
BENZALDEHYDE ID50=830 uM *
BENZALDEHYDE ID50=0.82 mM *
BENZOIC-ACID ID50=710 uM *
BENZOIC-ACID ID50=640 uM *
CINNAMALDEHYDE ID50=970 uM *
CINNAMALDEHYDE ID50=129 ug/ml *
CINNAMIC-ACID ID50=700 uM *
CITRAL ID50=1.5 mM *
CITRAL ID50=1,500 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
Pterocarpus marsupium Indian Kino; Malabar Kino; bijasal 2 0
Pueraria montana Kudzu; Kudsu 3 0
Punica granatum Pomegranate; Grenadier (Fr.); Granatapfelbaum (Ger.); Granatapfelstrauch (Ger.); Zakuro (Jap.); Romanzeiro (Port.); Granado (Sp.); Mangrano (Sp.) 5 0
Pycnanthemum pilosum Pilose Mountain Mint 1 0
Pyrus communis Pear 2 28
Quercus alba White Oak 1 0
Quercus infectoria Aleppo Oak; Dyer's Oak; Gall Oak 1 0
Quercus robur English Oak 1 0
Quercus rubra Northern Red Oak 1 0
Quercus velutina Black Oak 1 0
Raphanus sativus Radish 1 91
Rheum officinale Chinese Rhubarb 1 0
Rheum palmatum Chinese Rhubarb 2 6
Rheum rhabarbarum Rhubarb 2 44
Rhododendron dauricum Chinese Alpenrose 2 0
Rhododendron ferrugineum Rusty-Leaved Alpenrose 1 0
Rhododendron ponticum Pontic Alpenrose 1 0
Rhus coriaria Sicilian Sumac; Sumac; Tanner's Sumac 1 0
Rhus toxicodendron Poison Ivy 2 0
Rhynchosia minima Burn Mouth Vine 1 0