Effect of hydrothermal treatment on the physical and rheological properties of maize starches
نویسندگان
چکیده
Standard maize (SMS) and waxy maize starch (WMS) were hydrothermally treated at their residual moisture level (~12 %) by Instantaneous Controlled Pressure Drop process in order to obtain pre-gelatinised starches in a single step. The effect of two parameters of this process, namely the steam pressure level and processing time, on the structural and rheological properties of the native maize starches were described. The occurrence of partial gelatinization for DIC treated starches was clearly attested by the increase of the median volume diameter in cold water, the decrease of the gelatinization enthalpy and a loss of birefringence under polarized light, this was more prominent for the highest pressure and longest time: 2.7 to 3 bar for 200 to 300 seconds. Sensitivity of starches to the process was also dependent on their origin, SMS being more affected than WMS.
منابع مشابه
Study of DIC hydrothermal treatment effect on rheological properties of standard maize (SMS), waxy maize (WMS), wheat (WTS) and potato (PTS) starches
متن کامل
Particle Size Distribution and Viscoelastic Behavior of French Dressing Containing Two Types of Commercial Waxy Maize Starches
Emulsion stability, viscoelastic rheological properties and particle size distribution of French dressing samples formulated with two types of commercial modified starch have been investigated. The product’s usual thickening agents, xanthan and guar gum, were 100% substituted by (2, 2.2%) of acetylated distarch adipate (ADA) and hydroxypropylated distarch phosphate (HDP) from waxy maize starch....
متن کاملتولید نشاسته ژلاتینه گندم و ذرت به وسیله خشک کن غلتکی واستفاده از آن در تولید سس سالاد
Salad dressing is a semisolid emulsion and a colloidal system with high consumer demand. Food polysaccharides (e.g starch) are used in the formulation of salad dressing to improve its physical properties and sensory attributes. In this research, 10% mixture of wheat or maize starches were used to produce pregelatinized starches by a double drum drier, followed by milling and sieving. The pregel...
متن کاملتولید نشاسته ژلاتینه گندم و ذرت به وسیله خشک کن غلتکی واستفاده از آن در تولید سس سالاد
Salad dressing is a semisolid emulsion and a colloidal system with high consumer demand. Food polysaccharides (e.g starch) are used in the formulation of salad dressing to improve its physical properties and sensory attributes. In this research, 10% mixture of wheat or maize starches were used to produce pregelatinized starches by a double drum drier, followed by milling and sieving. The pregel...
متن کاملCharacterization of modified high-amylose maize starch-α-naphthol complexes and their influence on rheological properties of wheat starch.
Amylose can form inclusion complexes with diverse small molecules. Modified starch has different and unique properties compared with its native counterpart. In this study, chemically/enzymatically modified high-amylose maize starches were used to make inclusion complexes with α-naphthol, and the physical properties of complexes and their influences on the rheology of wheat starch were character...
متن کامل