Fig. 2. Principal component analysis (PCA) of ugali sensory attributes including firmness and stickiness measured by TA-XT2 Texture Analyser. (a) Plot of the first two factors scores
for ugali. (b) Plot of the loading vectors for sensory attributes of ugali from instrumental and descriptive sensory analyses. NS 5511 (red, tannin sorghum); NSCP (NS
5511 þ Cowpea); Orbit (white, tan-plant sorghum); OBCP (Orbit þ Cowpea).