Research at AfricaRice –
Processing and Value Addition
John Manful 22nd to 25th November 2011, Cotonou, Benin
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.
On – going work
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.
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
• 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
Mechanization
- The following equipment for mechanization are being evaluated :
- Planters- Row weeders - 4 different models of mini-combine harvesters.
By-product utilization
Briquettes from rice bran and husks
2011 AfricaRice Science Week and GRiSP-Africa Science Forum
12-16 September 2011, Cotonou, Benin
Critical Issues:- Shape- Compressive force- Binders (type and concentration)
Rice bran as substrate for edible mushroom cultivation
Compost bags
Compost bags inoculated with mushroom spawn
Freshly prepared compost bags
Mushroom mycelium
Oyster mushrooms
P. ostreatus strain EM-1
P. eous strain OT-3
Merci
Thank you