Characterization of volatile compounds from the gum-resin of Mangifera indica L. trunk bark using HS-SPME-GC/MS.

Résumé

Mangifera indica L. is a tree that exudes a gum-resin which is highly valued in traditional medicine of several central African countries. Gum-resin samples of M. indica L. were collected in Brazzaville (Congo), in the same area and their volatile compounds were extracted by headspace solid phase microextraction (HS-SPME). The chemical composition of the extracts obtained by gas chromatography-mass spectrometry (GC/MS) showed a predominance of sesquiterpenes. The major constituents were: β-élemene (6.7- 65.7%), β-caryophyllene (8.7-14.6%), α-humulene (3.1-5.3%), β-chamigrene (0.7-4.6%), β-selinene (7.7-31.4%) and α-selinene (9.0-39.4%) with quantitative differences from sample to another. This variability was discussed. Chemical composition of the volatile components of gum-resin of M. indica L. was compared with those of leaves and fruits which have been reported in the literature. The results showed significant differences.