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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=320 uM *
ANISALDEHYDE ID50=380-970 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=0.82 mM *
BENZALDEHYDE ID50=830 uM *
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
Trigonella foenum-graecum Fenugreek; Greek Clover; Greek Hay; Bockshornklee (Ger.); Alholva (Sp.) 3 0
Triticum aestivum Wheat 4 31
Tsuga canadensis Eastern Hemlock 1 0
Turnera diffusa Damiana 1 7, 000
Tussilago farfara Coltsfoot 1 0
Umbellularia californica California Bay 1 1, 120
Uncaria catechu Gambir; Pale Catechu 1 0
Uncaria guianensis Cat's Claw; Una de Gato; Garabato Colorado; Tambor Huasca; Ungunagi 1 0
Urginea maritima European Squill 2 0
Urtica dioica European Nettle; Stinging Nettle 5 0
Vaccinium corymbosum Blueberry 3 0
Vaccinium macrocarpon Cranberry; Large Cranberry; American Cranberry 5 1, 494
Vaccinium myrtillus Bilberry; Whortleberry; Dwarf Bilberry 8 54, 000
Vaccinium vitis-idaea Cowberry; Lingen; Lingonberry 4 278, 160
Valeriana officinalis Valerian; Common Valerian; Garden-Heliotrope 3 0
Vanilla planifolia Vanilla; Bourbon Vanilla 9 4, 468
Vanilla tahitensis Tahiti Vanilla 1 0
Verbena officinalis Vervain 1 0
Vetiveria zizanioides Cus-Cus; Vetiver; Cuscus Grass 1 0
Viburnum opulus Crampbark; European Cranberry Bush; Guelder Rose; Snowballbush 4 800