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Research at AfricaRice –
Processing and Value Addition
John Manful 22nd to 25th November 2011, Cotonou, Benin
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Africa Rice’s Perspectives on Processing and Value Addition
• Post harvest and value addition issues have been made a priority in the National Rice Development Strategies of many African countries.
• Training programmes lined up for national scientists, extension workers, farmers, millers, parboilers and marketers.
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On – going work
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Grain quality evaluation
• Basic support in grain quality evaluation to agronomy and breeding projects
• Physico-chemical analysis carried out on 470 O. glaberrima varieties.
• Another batch of 500 O. glaberrima samples have been prepared for analysis.
• Starch structures and pasting properties as well as the glycemic indices will be determined for this batch.
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Analyses and equipment available
• Milling characteristics - Dehullers, polishers, grinders, broken separators
• Physical properties
Grain length - Statistic Rice Analyser
Grain shape - Statistic Rice Analyser
Chalkiness - Statistic Rice Analyser
Grain colour - Minolta Chromameter
Grain hardness - Kiya Hardness Tester
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• Gelatinisation temperature - Alkali Spreading Value
• Cooking properties• Pasting Characteristics - Rapid Visco Analyser
• Textural properties - TA-XT Texture Analyser
• Gel consistency• Amylose content - Amylose Auto Analyser
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Mechanization
- The following equipment for mechanization are being evaluated :
- Planters- Row weeders - 4 different models of mini-combine harvesters.
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By-product utilization
Briquettes from rice bran and husks
2011 AfricaRice Science Week and GRiSP-Africa Science Forum
12-16 September 2011, Cotonou, Benin
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Critical Issues:- Shape- Compressive force- Binders (type and concentration)
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Rice bran as substrate for edible mushroom cultivation
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Compost bags
Compost bags inoculated with mushroom spawn
Freshly prepared compost bags
Mushroom mycelium
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Oyster mushrooms
P. ostreatus strain EM-1
P. eous strain OT-3
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Merci
Thank you