Photochemical composition of the nectar of Voacanga africana Stapf. (Apocynaceae) and the three honey samples of Ngaoundere (Cameroon)

ORGN 108

Emmanuel Talla, tallae2000@yahoo.fr1, FN. Tchuenguem, tallae2000@yahoo.fr2, and A. Taimanga2. (1) Department of Chemistry, University of Ngaoundere, PO Box 454, Ngaoundere, Adamawa Province, Cameroon, (2) Department of Biology, University of Ngaoundere, PO Box 454, Cameroon
At Dang (Ngaoundéré, Cameroon), from March to April 2004 (beginning of the rainy season), Voacanga africana Stapf. (Apocynaceae) flowers were observed for the study of its nectar. Phytochemical analysis and total sugar concentration of the nectar of the Apocynaceae were studied. Chemical analysis of tree honey samples from the same region of Ngaoundéré was studied. The results reveal that: the total mean of sugar concentration of young flowers nectar is 35. 95 % (n =225; s =3.42) and the mean of total sugar concentration of old flowers nectar is 35.62 % (n =215; s = 3.12). Alkaloids are present in nectar and in each of the honey samples; phenolics compounds and coumarins are present in one honey sample; another honey sample contains flavonoids. The nectar sample contains flavonicals heterosids compounds. The presence of these compounds in nectar and honey could explain the pharmacological properties of the honey from the studied region.
 

Total Synthesis, Materials, Devices and Switches, Molecular Recognition and Self-Assembly, Biologically-Related Molecules and Processes
8:00 PM-10:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Organic Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007