Farm to Fermentation: Reclaiming Nigeria's Indigenous Crops and Legumes for Healthier, Wheat-Independent Ready-to-Eat Foods

Abstract

The ready-to-eat snack industry in Nigeria remains heavily dependent on imported wheat, costing the country heavily annually, despite its rich diversity of indigenous cereals, tubers, and legumes traditionally processed through fermentation. This review synthesizes current evidence on fermented indigenous cereals and tubers (sorghum, millet, cassava, tigernut, and fonio) and legumes (cowpea, African locust bean, African oil bean, Bambara groundnut, and soybean) to highlight their potential as nutritionally promising alternatives for developing healthy snack foods. The evidence demonstrates that fermentation reduces antinutritional factors, improves protein digestibility and mineral bioavailability. It also enhances the production of beneficial bioactive compounds with probiotic microorganisms, thereby improving gut, metabolic, and cardiovascular health. The study also examines emerging technological advances, including defined starter cultures, extrusion processing, and food safety standardization, that could facilitate large-scale commercialization of fermented indigenous crop-based snacks. Thus, modernizing traditional fermentation technologies offers a sustainable pathway to reduce dependence on wheat imports, promote food and nutrition security, and support the development of a competitive, value-added snack food industry in Nigeria.