ABSTRACT:

The objective of this study was to assess the nutritional composition of common locust species and their potential contribution to nutritional needs in Southwest Nigeria. Samples of three common locust species (Locusta migratoria migratoroides, Zonocerus variegatus, and Ruspolia differens) were collected from different ecological sites in Southwestern Nigeria, and proximate compositional analysis was performed to determine proteins, lipids, carbohydrate, and fibre. In addition, mineral analysis showed the levels of essential micronutrients such as iron, zinc, and calcium. The results revealed remarkable protein content (between 50 and 70% dry weight) in all locust strains, significantly higher (p < 0.001) compared to common staple crops such as cassava and maize as well. Iron (2-4 mg/100 g dry weight) and zinc (3-5 mg/100 g dry weight) were also good sources and exceeded the levels found in many animal source feeds that are generally limited in Southwestern Nigeria. Rediscovering and promoting the consumption of edible grasshoppers offers a promising strategy to address the prevalent protein and micronutrient deficiencies in Southwestern Nigeria. Their high nutritional profile and traditional significance make them a culturally appropriate and sustainable source of food. We need to conduct further research to identify effective production methods and preparations that enhance the palatability and consumer acceptance of grasshoppers. Moreover, it holds the promise of uncovering great ways to produce sustainable grasshoppers.