Proximate composition and fatty acid profile of seeds of bottle gourd/ Composicao centesimal e perfil dos acidos graxos de sementes de porongo

The fruit of bottlegourd are used for the manufacture of gourd, utensils and handicrafts. Seeds and fruits of bottlegourd are discarded during the manufacturing in producing regions. Thus, this study aimed to evaluate the composition and profile of fatty acids in the seeds of bottle gourd with a view to using the seeds as raw material and food. Seeds of bottle gourd, whose plants were seeded in different growing seasons, were collected in an experiment in the city of Rondinha--RS, in 2008. After drying, it was separated and the ratio of peel and seed kernels. The almonds were subjected to assessment of lipid content, ash, crude protein, crude fiber and carbohydrates. The fatty acid composition of lipids present in the almonds was determined by gas chromatography. The seeds had high carbohydrate content (33.0%), lipids (37.6%) and protein (25.2%), but were not affected by seeding date. However, plants seeded later (on October 27th) had shorter cycle (time between seeding and senescence of plants, 149 days) and almond had a higher relative proportion offatty unsaturated acids (79.5%). The predominant fatty acids in decreasing order were linoleic acid (C18: 2, omega-6), palmitic acid (C16: 0), oleic (C18:1, omega-9) and stearic acid (C18: 0). The results of centesimal composition and profile offatty acids suggest a nutritional potential that needs to be better studied with a view to exploiting the bottle gourd seeds.