We conducted this study to investigate the quality characteristics of extruded noodles(EN) mixed with cereals. The EN were evaluated for cooking properties(weight, water absorption, volume, and turbidity), Hunter`s color values, texture characteristics, and sensory characteristics. The cooked weight, water absorption, and volume of the cooked EN were significantly decreased relative to that of control noodles, whereas the turbidity increased. Hunter`s color L- and b-value of EN were decreased compare with the control noodles, but a-value was increased. Hunter`s color L-value of cooked EN was increased, whereas a- and b-value was increased. The texture characteristics(hardness, adhesiveness, springiness, gumminess, and chewiness) of the cooked EN-2 and EN-3 were similar to the cooked control noodles. A sensory characteristics (appearance, flavor, texture during mastication, taste, and overall quality) of EN-1 were significantly decreased relative to that of control noodles, but EN-2 and EN-3 was not different to control noodles. As the results of this study indicate that extrusion processing could be used to make the EN mixed with cereals.
This study was designed to maximize extract yields of functional components in Angelica gigas Nakai by extrusion process. In addition, the optimizing condition of the extrusion process was established to increase the extraction of the functional components in A. gigas. The total polyphenol was increased by 40% compared to a control. And the optimizing condition was that the screw speed was 62.76 rpm, the amount of A. gigas powder was 34.79 kg/h, and the amount of water was 4.44 kg/h. The result of antioxidant activities of A. gigas extrusion, the inhibition of oxidization had the effect of 10.29 ~ 14.59% compared to a control. The content of decursin and decursinol angelate, which were index components, was 6.37%; it was increased by 16.64% compared to a control (5.31%) and showed a significantly difference (p < 0.05). And the optimizing condition was the screw speed 93.71 rpm, the amount of A. gigas powder was 28.67 kg/h, and the amount of water was 9.9 kg/h.