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Dr. Duke's Phytochemical and Ethnobotanical Databases
U.S. Department of Agriculture
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  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\RssResponseRelativeUrlFilter->onResponse() (line 24 of core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\ActiveLinkResponseFilter->onResponse() (line 85 of core/lib/Drupal/Core/EventSubscriber/ActiveLinkResponseFilter.php).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\RssResponseRelativeUrlFilter->onResponse() (line 24 of core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\ActiveLinkResponseFilter->onResponse() (line 85 of core/lib/Drupal/Core/EventSubscriber/ActiveLinkResponseFilter.php).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\RssResponseRelativeUrlFilter->onResponse() (line 24 of core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\ActiveLinkResponseFilter->onResponse() (line 85 of core/lib/Drupal/Core/EventSubscriber/ActiveLinkResponseFilter.php).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\RssResponseRelativeUrlFilter->onResponse() (line 24 of core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\ActiveLinkResponseFilter->onResponse() (line 85 of core/lib/Drupal/Core/EventSubscriber/ActiveLinkResponseFilter.php).
  • Deprecated function: stripos(): Passing null to parameter #1 ($haystack) of type string is deprecated in Drupal\Core\EventSubscriber\RssResponseRelativeUrlFilter->onResponse() (line 24 of core/lib/Drupal/Core/EventSubscriber/RssResponseRelativeUrlFilter.php).
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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 IC>50=125 uM *
QUERCETIN IC50=20 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
Conyza canadensis Butterweed; Hogweed; Horseweed 2 0
Coriandrum sativum Coriander; Chinese Parsley; Cilantro 1 0
Coriaria myrtifolia Mealy Tree 2 0
Coriaria thymifolia Ground Toot; Shanshi 2 0
Cornus florida American Dogwood 3 0
Cornus mas Cornelian Cherry; Sorbet 3 0
Cornus officinalis Chinese Dogwood 1 0
Corylus americana American Filbert; American Hazel 1 0
Corylus avellana English Filbert; European Filbert; European Hazel; Hazel; Cobnut 2 0
Costus speciosus Crepe Ginger; Wild Ginger; Cane Reed 1 0
Crataegus cuneata Hawthorn 1 0
Crataegus laevigata Hawthorn; English Hawthorn; Whitethorn; Woodland Hawthorn 4 0
Crataegus monogyna Hawthorn; English Hawthorn 4 80
Crataegus rhipidophylla Hawthorn 4 0
Crocus sativus Saffron 3 0
Croton lechleri Sangre de Drago; Sangre de Grado; Sangre de Dragon; Dragons Blood 1 0
Cucurbita pepo Pumpkin 3 0
Cuminum cyminum Cumin 1 0
Curcuma longa Turmeric; Indian Saffron 2 463, 980
Curcuma xanthorrhiza Javan Turmeric; Temu Lawak 1 20, 000