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