Bioactive crude plant seed extracts from the NCAUR oilseed repository. |
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| Authors: | C L Cantrell M A Berhow B S Phillips S M Duval D Weisleder S F Vaughn |
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| Affiliation: | U.S. Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research, Peoria, Illinois, USA. c.cantrell@hauser.com |
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| Abstract: | Over four-hundred crude extracts from 202 plant species distributed among 131 plant families were evaluated for their bioactivity against brine shrimp (Artemia salina). Activity was determined for both the organic (CH2Cl2:MeOH) and aqueous extracts against A. salina in a 96 well-plate assay. Of the greater than four-hundred extracts tested, 21 organic and 6 aqueous extracts demonstrated potent cytotoxic activity (LC50 = < 100 microg/ml). Three of these organic extracts (Crateva religiosa, Diospyros dichrophylla, and Olax subscorpioidea) were chosen for chemical investigations due to their high activity and a lack of prior investigations. Chemical analysis of these extracts resulted in the isolation of oleanolic acid (1) and 4-epi-hederagenin (2) from C. religiosa, isodiospyrin (3) from D. dichrophylla, and santalbic acid (4) from O. subscorpioidea. |
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