The Effect of Different Particle Size Distribution on the Quality of Rice Flour

Area of Science:

• Food Science
• Materials Science

Background:

• Rice flour is a key food ingredient with properties influenced by particle size.
• Understanding particle size effects is crucial for optimizing rice flour applications.

Purpose of the Study:

• To investigate how varying particle size fractions affect rice flour's chemical composition, color, water absorption, pasting, thermal, and rheological properties.
• To establish a theoretical basis for targeted application and quality optimization of rice flour.

Main Methods:

• Systematic investigation of different rice flour particle size fractions.
• Analysis of chemical composition, color, water absorption, pasting behavior, thermal properties, and rheological characteristics.
• Statistical analysis to determine significance of particle size effects.

Main Results:

• No significant differences in major chemical constituents across particle sizes.
• Finer particles exhibited increased whiteness and damaged starch.
• Decreasing particle size led to reduced viscosity, thermal properties (gelatinization enthalpy), and rheological moduli (G', G″), with the coarsest fraction showing the highest gelatinization enthalpy (11.12 J/g).

Conclusions:

• Particle size distribution is a critical factor in modulating rice flour's functional properties.
• Findings provide insights for optimizing rice flour quality and applications in the food industry.
• Targeted control of particle size can enhance specific rice flour characteristics for desired end-uses.