Africa Rice’s Perspectives on Processing and Value Addition

1. Research at AfricaRice –
Processing and Value Addition
John Manful
22nd to 25th November 2011, Cotonou, Benin

2. 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.

3. On – going work

4. 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.

5. 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

6. • 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

7. Mechanization
- The following equipment for mechanization are
being evaluated :
- Planters
- Row weeders
- 4 different models of mini-combine harvesters.

9. By-product utilization
Briquettes from rice bran and husks
2011 AfricaRice Science Week and GRiSP-Africa Science
Forum

10. Critical Issues:
- Shape
- Compressive force
- Binders (type and concentration)

12. Rice bran as substrate for edible
mushroom cultivation

13. Compost bags
Mushroom
mycelium
Compost
bags
Freshly
inoculated
prepared
with
compost
mushroom
bags
spawn

14. Oyster mushrooms
P. ostreatus strain EM-1
P. eous strain OT-3

15. Merci
Thank you