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close this bookCase Studies of Neem Processing Projects Assisted by GTZ in Kenya, Dominican Republic, Thailand and Nicaragua (GTZ, 2000, 152 p.)
close this folder2. Survey of neem-processing methods
close this folder2.2 Commercial products
View the document(introduction...)
View the document2.2.1 Collection systems
View the document2.2.2 Harvesting methods
View the document2.2.3 Processing technology seeds


The following steps are required for the commercialisation of neem products:

· Harvest: hand picking (for best quality) or collecting (sweeping up) fruits and kernels which have been depulped by bats and birds

· Cleaning with water/sand

· De-pulping: by hand or modified coffee depulper

· Drying: controlled exposure to sunlight/drying device

· Disinfection with calcium hypochlorite

· Storage in a dry, shady and well ventilated place, preferably at 20 C

· Extraction:

· alcoholic batch extraction (one-step extraction)

· methods for obtaining an azadirachtin-enriched extract: two-step extraction, supercritical CO2,

· Formulation: increases stability but emulsifiers often also have synergistic or additive effects (e.g. sesame, soya or castor oil, piperonyl butoxide etc.).