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Carob tree gum is an exudate obtained from the stems and branches of Prosopis trees. It is a natural product with potential applications in food, pharmaceutical, cosmetic industry, etc. It is found in dry and semi dry regions of Ecuador. In the present work, samples originated from Prosopis juliflora tree, collected from three zones of Manabí, province of Ecuador: Bahía de Caráquez (Zone 1), Portoviejo (Zone 2) and Puerto López (Zone 3), and one sample of arabic gum, food grade from Acacia senegal tree used as reference, were analyzed by infrared spectroscopy, to obtain and compare the spectrums of the each one of the samples. Infrared spectrums of both gums were obtained and compared with bibliography. The FTIR spectra exhibited a good correlation between the two types of gums and with the literature; an analytical comparison was made to obtain the correlation percentage between both gums. The results were 80.37, 79.83 and 79.66 % for 1, 2 and 3 zones, respectively. Thus, a research line is open for the possible use of carob gum, as a new alternative and accessible, instead of arabic gum.

ANÁLISIS POR ESPECTROSCOPIA DE INFRARROJOS (FTIR) DEL EXUDADO DEL ÁRBOL DE ALGARROBO Prosopis juliflora (FABACEAE)