Physicochemical properties of starches extracted from bambara groundnut landraces

The physicochemical properties of starches extracted from three bambara groundnut landraces, maroon, brown, and cream were studied. The amylose contents (31.5–34.6%) of the bambara starches were significantly different among the landraces. All the bambara starches exhibited an A‐type crystalline pattern with an average relative crystallinity of 32%. The peak gelatinization temperature (approx. 73°C) of brown bambara starch was slightly low compared to maroon (approx. 78°C) and cream (approx. 76°C) bambara starch. The bambara starches showed substantially high proportion of resistant starch (71%) and similar predicted glycemic index (40.1) among landraces. Bambara starch can potentially be used as a thickening agent in food products and ingredient development.