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Theobroma grandiflorum is an important fruit tree from Sterculiaceae family, native to the Brazilian Amazon, known in the region as cupuaçu. The seeds have a high fat content (24%) with characteristics that resemble those of cocoa (Theobroma cacao) butter with potential applications in the cosmetic, pharmaceutical and food industries. The main objective of this work was to explore the seed fats from T. grandiflorum that were analyzed for fatty acid composition by Gas Chromatography with Flame Ionization Detector (GC-FID) and to analyze their activity for acetylcholinesterase inhibition. Chromatographic analysis provided detection of nine fatty acids. The major fatty acids found in the species were oleic (40.0%), stearic (32.7%), arachidic (10.4%) and palmitic (8.0%). The acetylcholinesterase inhibition by fats from seeds was over 40.48%. DOI: http://dx.doi.org/10.17807/orbital.v0i0.894

The inajá (Maximiliana maripa) is a palm from Arecaceae family. The inajá distribution occurs from Amazon to the west-central of South America. The inajá has edible parts: the palm heart and oils obtained from pulp and seed. The aims of this study were to verify the fatty acid profile from pulp oil by GC-FID and analyzing acetylcholinesterase inhibition by inajá pulp oil. Chromatographic analysis provided eleven fatty acids. The major unsaturated fatty acids are oleic (22.32%), linoleic (4.72%) and linolenic acids (3.95%). The major saturated fatty acids are palmitic (20.76%), myristic (20.48%) and lauric acids (17.42%). The acetylcholinesterase inhibition by inajá oil pulp was over 63.76%. DOI: http://dx.doi.org/10.17807/orbital.v7i4.769

The Andiroba belongs to the botanical family Meliaceae, found in the Amazon mainly two varieties, Carapa guianensis and C. procera. They are species with large logging utility and extracted oil has many uses, especially in lighting, such as healing use, insecticide and anti-inflammatory. In this paper the physico-chemical properties of oil of C. guianensis in São João da Beacon, Roraima through calculations from 1H NMR spectrum using the computer program PROTÓLEOS properties are studied by ESI-MS technique to determine the constituents of said oil are linolenic acid (9.99%), linoleic acid (13.14%), oleic acid (47.32%), unsaturated (70.45%) fatty acid and saturated fatty acids (29.55%). The extracted oil of andiroba oil has a yield of 67.03% being the physicochemical properties of the oil as follows: 48.4 mg I2 / g of iodine; 161.67 mg KOH / g of saponification; 1.84% of acid; 1004.02 g / mol average molecular weight; 159.83 mg KOH / g of ester value; 98.87% percent of ester and 0.9166 g / cm3 for the density at 25 ° C. Constituents determined by ESI-MS include: 1,1'-methyl-2,2'-dicarboxylate diantraquinona, dimethyl pirofosfatosantoninate, 2,4,6-tris- (3,5-di-butyl-4-tec -hidroxibencil) styrene, (2,3,7,8,12,13,17,18-octanoilporfirinate) -Mg (II).