![]() | Case Studies of Neem Processing Projects Assisted by GTZ in Kenya, Dominican Republic, Thailand and Nicaragua (GTZ, 2000, 152 p.) |
![]() | ![]() | 2. Survey of neem-processing methods |
![]() | ![]() | 2.2 Commercial products |
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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.).