Effects of solid content of starch slurry on noodle quality
The transparency was the most important appearance attribute of noodles. The transparent noodles were perceived as high quality product by customers [2]. The color of noodles at various solid contents was significant difference (Table 9). As increasing solid content of starch slurry, it was likely to reduce lightness (L*) of noodles, especially for dry noodles. The high solid content of starch slurry could lead to insufficient water for starch completely gelatinization, the presence of incompletely gelatinized starch granules in noodles could affect noodle color or transparence. The cooking time, rehydration and cooking loss of starch noodles considerable increased with increasing of solid content of starch slurry (Table 10). The water content in starch slurry can become inadequate for starch gelatinization as starch concentration in starch slurry was too high [3,15]. The excess presence of incompletely gelatinized starch granules in noodle matrix promoted starch solubility into cooking water, resulting in high cooking loss and long cooking time. The results in Table 10 indicated that as increase of solid content of starch slurry resulted in markedly increasing of extension modulus
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