3.3.6. Foam capacity
(FC) and foam stability (FS)The FC and FS differed significantly (p < 0.05) among the flours (Table 2). Foam capacities are used to improve appearance, texture and consistency of foods. FC of flours was linked to protein content. Blanched flours had lower foam capacities than raw samples. Direct solar dried flours had higher foam capacity than freeze dried flours. This may be accredited to protein degradation taking place due to blanching and drying treatments. FS is a measure of drainage of liquid from the foam, and utility of whipping agents depends on their ability to maintain the whip as long as possible (Lin, Humbert, & Sosulski, 1974). The maximum value of FS was recorded for FDR and higher foam stabilities indicate that water soluble proteins in elephant foot yam flours are more surface active