Cooking quality of noodles
Mean values of optimum cooking time (min), weight increase (%), volume increase (%) and cooking loss (%) of noodles prepared by substitution of wheat flour with different levels (5%, 10% and 15%) of native and modified corn starch are listed in Table 4. Cooking weight increase of noodles was significantly (P ⩽ 0.05) affected by the type and level of substitution. Noodles containing 10% native corn starch showed the highest cooking weight increase (111%) followed by that containing 5% of native corn starch, as well as the control one, being 100%, being statistically equal to those of noodles that contained 15% native starch and 10% pregelatinized starch having the same weight increase value (98.50%), this increase in cooked noodles weight was significantly equal to that obtained for noodles that contained 5% pregelatinized starch. However, cooked noodles contained more pregelatinized starch (15%), 10% and 15% acid-thinned starch or 5% dextrinized starch exhibited intermediately weight increase values, being statistically equal. while, cooked noodles contained 10% and 15% dextrinized starch recorded the least weight increase.