Properties of baked foams from citric acid modified cassava starch and native cassava starch blends.

•New starch foams were prepared by cost effective process.•Citric acid modified starch foams and its blends with native starch are non-toxic.•Morphology of the blended starch foams showed ordered cell size distribution.•Foam blends have good water resistance and acceptable thermal stability.•The lowest density and water adsorption capacity belonged to 40/60 NS/CNS ratio.