The study was performed at the Food Chemistry and Technology Laboratory of Iletri,
Malang. Orange-fleshed sweet potato variety, namely Beta 1 (Fig. 1) was harvested from
Tumpang, Malang after 4.5-month planting. Domestic wheat grain of Dewata variety (Fig. 2)
was obtained from the Laboratory of Agricultural Postharvest Research, Karawang. This
grain was polished, then milled into flour (80 mesh). Imported wheat flour (hard wheat type)
which was purchased from the local market was used as a control. The fresh tubers of sweet
potato were steamed, removed the skin, and then mashed to obtain paste/mash as ingredient
for noodle preparation. The experiment was factorial randomized complete design with two
factors and three replicates. The first factor was the origin of wheat flour (domestic and
imported flours) and the second factor was noodle formulation (100% wheat flour and
blended wheat flour with 40% sweet potato paste).