Campa Claudine auteur aut IRD Doulbeau Sylvie auteur aut IRD Dussert Stéphane auteur aut IRD Hamon Serge auteur aut IRD Noirot M. auteur aut IRD text journalArticle eng Chlorogenic acids, sensu largo (CGA), are secondary metabolites of great economic importance in coffee: their accumulation in green beans contributes to coffee drink bitterness. Previous evaluations have already focussed on wild species of coffee trees, but this assessment included six new taxa from Cameroon and Congo and involved a simplified method that generated more accurate results. Five main results were obtained: (1) Cameroon and Congo were found to be a centre of diversity, encompassing the entire range of CGA content from 0.8 % to 11.9 % dry matter basis (dmb); (2) three groups of coffee tree species - CGA1, CGA2 and CGA3 - were established on the basis of discontinuities; (3) means were 1.4 %, 5.6 % and 9.9 % drub, respectively; (4) there was a qualitative relationship between caffeine and ACG content distribution; (5) only a small part of the CGA is trapped by caffeine as caffeine chlorogenate. © 2004 Elsevier Ltd. All rights reserved. specialized Coffeae caffeine chlorogenic acids 076 93 1 135-139 2005 0308-8146 https://www.documentation.ird.fr/hor/fdi:010042953 10.1016/j.foodchem.2004.10.015 0308-8146 [F B010042953] https://www.documentation.ird.fr/hor/fdi:010042953 IRD - Base Horizon / Pleins textes 2006-03-29 2017-08-23 fdi:010042953 fre