Skip Navigation

This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (1)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Johnson, E. L.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Johnson, E. L.
Agricola
Right arrow Articles by Johnson, E. L.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Annals of Botany 76: 331-335, 1995
© 1995 Annals of Botany Company

Content and Distribution of Erythroxylum coca Leaf Alkaloids

Emanuel L. Johnson

United States Department of Agriculture, Agricultural Research Service, Plant Sciences Institute, Weed Science Laboratory, BARC-W, Beltsville, MD 20705-2350 USA

Fully expanded leaves of Erythroxylum coca var. coca Lam. (Erythroxylaceae) 35-70-d-old were harvested from 21-month-old plants grown under greenhouse conditions. Each harvested leaf was placed on a plexiglass silhouette according to its dimensions and divided into four primary sections (petiole, base, mid and anterior) and three subsections (lamina periphery, false mid-rib, and true mid-rib) to determine the distribution and content of hygrine, cuscohygrine, trans-cinnamoylcocaine, cis -cinnamoylcocaine, tropacocaine, tropinone, methyl ecgonine and cocaine. The leaf sub-sections and petiole were extracted and analysed for alkaloid content (%) by HPLC (cocaine alkaloid only) gas chromatography and GC/MS. Cocaine, methyl ecgonine and hygrine were highest in the lamina periphery with a content of 0·48, 0·46 and 0·32%, respectively. Trans-cinnamoylcocaine was pre-eminent of the cinnamoylcocaines and was most abundant in the petiole at a content of 0·24%. Cis-cinnamoylcocaine, tropinone, cuscohygrine and tropacocaine were ubiquitously distributed throughout the leaf where the average contents were 0·14, 0·004, 0·16 and 0·04%, respectively.Copyright 1995, 1999 Academic Press

Alkaloids, Erythroxylum coca var. coca, E. coca, leaf alkaloids, petiole alkaloids, cocaine, cuscohygrine, methyl ecgonine, hygrine, tropinone, tropacocaine, trans-cinnamoylcocaine, cis-cinnamoylcocaine


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.