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Area of Science:

  • Agricultural Science
  • Food Science
  • Sensory Science

Background:

  • Rice is a global staple, providing 20% of daily caloric intake worldwide.
  • Milling processes result in approximately 100 million tons of broken rice annually.
  • Broken rice faces significant price discounts and is often diverted from human consumption.

Purpose of the Study:

  • To investigate the reasons behind the price devaluation of broken rice.
  • To assess consumer perception and sensory evaluation of broken rice in raw and cooked forms.
  • To determine the impact of broken rice percentages on consumer willingness to purchase.

Main Methods:

  • Consumers evaluated raw and cooked rice samples with varying percentages of broken rice (5% to 40%).
  • Sensory analysis was conducted on both raw and cooked rice.
  • Statistical analysis, including p-value calculation, was used to determine significance.

Main Results:

  • The appearance of raw rice with higher broken percentages negatively impacted consumer willingness to pay.
  • Sensory analysis revealed no discernible differences in cooked rice quality across different broken rice levels (p < 0.01).
  • Overall impression and texture were key factors influencing purchase decisions, but these did not differ between samples.

Conclusions:

  • Price discounts for broken rice are not justified by differences in cooked eating quality.
  • Consumer perception of raw rice appearance, not cooked sensory attributes, drives purchasing behavior.
  • The study highlights a disconnect between the physical form of rice and its perceived value in cooked form.