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Insects are an important source of proteins, vitamins, amino acids, minerals, and lipids. In this context, the present study evaluated the essential fatty acid profile of the larval oil of Rhynchophorus palmarum (Coleoptera: Curculionidae) subjected to three plant tissue diets: Mauritia flexuosa (Arecaceae), Oenocarpus bataua (Arecaceae), and Jacaratia digitata (Caricaceae). Five adult individuals, 2 males, and 3 females were captured for their reproduction in captivity. The hatched larvae were subjected to the three diets for 45 days. After this period, extraction was carried out and the fatty acid profile of the oil was determined. Being oleic monounsaturated fatty acid (18:1) and palmitic saturated fatty acid (16:0), which are found in greater abundance for the three diets. Regarding essential fatty acids, linoleic (18:2) and alpha-linolenic (18:3) fatty acids were detected in concentrations of 1.96 Â 0.028 and 1.14 Â 0.007%, for the diet of Mauritia flexuosa, 0.67 Â 0.007 and 0.43 Â 0.035%, for the diet of Oenocarpus bataua, and 0.76 Â 0.000 and 0.29 Â 0.007%, for the diet of Jacaratia digitata, respectively. The results show that diets influence the type of fatty acid metabolized and its concentration. The larva is a source of monounsaturated fatty acids such as oleic (omega 9) and palmitoleic (omega 7) and of the essential fatty acids linoleic and alpha-linolenic precursors of the fatty acids of the omega 6 and omega 3 families. [ABSTRACT FROM AUTHOR]

Licania rigid Benth, popularly oiticica, is typical vegetation in the northeastern hinterland. It contains high oil content in its fruits and good productivity even in times of drought; promote social and economic development for the region, the industrial use of paints, varnishes, soap, tarpaulins and thin glazes. Therefore, this study aims determine biometrics, physical parameters and lipid yield the fruit of the myrtle. The fruits were harvested, sorted, sanitized. Then, a caliper was used to carry out the biometrics fruit and then underwent separation exocarp-mesocarp and endocarp almonds. The samples were ground and stored until analysis proceeded. For the determination of pH and conductivity was used about 5g of each sample plus 50ml of distilled water and homogenizing for then digital pH meter was used and conductivity, respectively. For titratable acidity (TA) was used earlier samples, and titrated with 0.1N NaOH, using phenolphthalein as an indicator until the samples reach a pH of 8.1. The procedure was the determination of the lipid content by Sohlext method, of 2 to 5 g of sample and hexane as solvent. The fruits showed an average weight of 9g. The pH changes for the various samples were irrelevant, while the exocarp-mesocarp showed higher conductivity, with 308.6 MSCM-1, and the endocarp was evidenced by higher ATT present with 16.8%. It was obtained in the almond lipid largest percentage, with average yield of 43.0%. Given the importance and high lipid profitability of the fruit, it is necessary to develop methodologies for use of this raw material. [ABSTRACT FROM AUTHOR]