Changes in color and texture of wheat noodles during chilled storage

Abstract

Wheat noodles cooked for different periods of time were stored at 5 °C, and color changes in their cross sections were quantitatively assessed by digital image analysis. The color of noodles with flattened moisture distributions whitened greatly during the early stages of chilled storage due to the retrogradation of starch, with the color change showing a significant correlation with the changes in noodle fragility. Color changes were also measured for wheat noodles and noodles containing modified starch with internal moisture distributions, and local changes within the noodles were kinetically analyzed. The addition of modified starch significantly reduced the color change in the noodle interior, where the moisture content was relatively low. Scanning calorimetric measurements indicated differences in the gelatinized state of modified starch and original wheat starch at low moisture contents, which affected the rate of color change in the interior of noodles containing modified starch.

Wheat Starch with Low Retrogradation Properties Produced by Modification of the GtfB Enzyme 4,6-α-Glucanotransferase from Streptococcus thermophilus

“…After they have cooled for a sufficiently long period, linear molecules, amylose, and linear parts of amylopectin molecules expel water and rearrange into a more crystalline structure. This recrystallization, called retrogradation, often leads to the formation of hard and digestive enzyme-inaccessible textures in some wheat-based foods, resulting in poor sensory quality, short shelf life, and low consumer acceptance. − …”

Effect of Resistant Starch from Green Banana Flour on Sensorial Properties of Noodles

“…The utilization of various types of flours can affect the texture of noodles as they have different types of composition in the flour. Several factors, such as starch, protein, and gluten concentration can determine the overall texture of noodles (Fukuzawa et al, 2016). Hence, the physicochemical properties of several products made with green banana flour can be significantly different compared to other types of flour.…”