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Measuring Head Rice Recovery in Rice
Jennine Rose Lapis1, Rosa Paula O Cuevas1, Nese Sreenivasulu1
1International Rice Research Institute, Los Baños, Laguna, Philippines.
Head rice recovery (HRR) is a key milling quality for rice market price, requiring at least 55% for farmer adoption. This study details HRR measurement and proposes improved drying methods to minimize losses.
Area of Science:
- Agricultural Science
- Food Science
- Agronomy
Background:
- Head rice recovery (HRR) is a critical milling quality attribute influencing rice market price.
- Consumer and farmer acceptance of new rice varieties depend on HRR meeting minimum requirements (≥55%).
- HRR is influenced by both genetic factors and postharvest processing conditions.
Purpose of the Study:
- To outline the process of milling paddy rice into head rice.
- To describe the methodology for measuring HRR.
- To propose an optimized laboratory-scale drying method to reduce head rice losses.
Main Methods:
- Detailed description of the paddy rice milling process.
- Standardized measurement techniques for head rice recovery.
- Development and testing of an improved laboratory-scale postharvest drying procedure.
Main Results:
- Established procedures for milling and HRR measurement.
- Demonstrated the impact of processing conditions on HRR.
- Proposed an improved drying method to enhance head rice yield.
Conclusions:
- Optimizing postharvest processing is essential for maximizing HRR.
- The proposed laboratory-scale drying method offers a way to minimize head rice losses.
- Accurate HRR assessment and processing are vital for the successful release and adoption of new rice varieties.
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