Fortification of rice: technologies and nutrients

Area of Science:

• Food Science and Technology
• Nutritional Science
• Public Health Nutrition

Background:

• Rice fortification is a key strategy to combat micronutrient deficiencies globally.
• Various technologies exist for fortifying rice with essential vitamins and minerals.
• Understanding these technologies is crucial for effective implementation and public health impact.

Purpose of the Study:

• To comprehensively review available technologies for vitamin and mineral rice fortification.
• To analyze the advantages and disadvantages of different fortification methods, particularly extrusion techniques.
• To discuss micronutrient stability, rice kernel properties, and quality control measures.

Main Methods:

• Review of existing literature on rice fortification technologies.
• Detailed examination of coating, dusting, and extrusion (cold, warm, hot) processes.
• Analysis of micronutrient behavior during processing, storage, washing, and cooking.
• Discussion of rice microstructure, sensory properties, and clinical trial outcomes.

Main Results:

• Extrusion technologies (cold, warm, hot) are highlighted for their process flow, facility needs, and operational scale.
• Technical feasibility of various micronutrients during processing and post-processing is assessed.
• Impact of fortification on rice kernel microstructure, visual appearance, and sensory perception is discussed.
• Recommendations for quality control and a summary of clinical trials are provided.

Conclusions:

• Multiple viable technologies exist for rice fortification, with extrusion offering versatile options.
• Micronutrient stability and physiological importance are critical considerations for successful fortification.
• Quality control and ongoing clinical evaluation are essential for ensuring the efficacy and safety of fortified rice.