Nutritional Potentials of Pachnoda marginata (Kolbe, 1906) and Rhabdotis Sobrina (Gory and Percheron, 1833) Two Insect Species Consumed in Togo
Abstract
Background and Objective: Several species of Coleoptera are used in diet in Togo. However, data on their nutritional value are not available. This study was undertaken to determine the nutritional value of Pachnoda marginata (Kolbe, 1906) and Rhabdotis sobrina (Gory and Percheron, 1833) of the Scarabaeidae family. Materials and Methods: After the samples of P. marginata and R. sobrina were collected, the ash, protein, vitamin and lipid contents as well as the acid, iodine and peroxide indices were determined according to the AOAC guidelines. The fiber content was obtained by the method of Weende. The minerals were analyzed by atomic absorption spectrophotometry and colorimetry. Fatty acid composition was determined by gas chromatography after separation of the methyl esters. Results: The results showed that the average protein content ranges from 48.28±0.1 to 53.89±1.00%. The lipid content is between 12.77±0.7% and 16.62±0.55%. The lipids are rich in monounsaturated fatty acids such as oleic acid (C18:1Δ9), (48.71±0.00% to 54.93±0.04%). Linoleic acid (C18: 2Δ9,12) content ranged from 1.33±0.01% to 5.45±0.01%. Linolenic acid (C18: 3Δ9,12,15) polyunsaturated fatty acid is found in R. sobrina at 1.11±0.02%. The Coleoptera studied appeared to be high in energy with calorific values of 1522.31±14.90 kj/100 g to 1681.98±15.58 kJ/100 g. The results showed that the average contents of minerals ranged from 11.59±0.41% to 13.5±0.08%. Vitamins were observed in variable amounts. Overall, P. marginata and R. sobrina are rich in vitamins, minerals, proteins and fats. Conclusion: These Coleoptera are therefore products that could contribute to food security in Togo.
Keywords:
Energy, fat, minerals, Pachnoda marginata, proteins, Rhabdotis sobrina, Togo, vitaminsArticle Metrics
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