Cover Image
Кітапты жабуTraining Programme for Women Entrepreneurs in the Food-processing Industry - Volume II (UNIDO, 1985, 286 p.)
Папканы жабуChapter 2 Vegetable Oil Extraction
Құжатты қарау(introduction...)
Құжатты қарау2.1 Oilseeds
Құжатты қарау2.2 Groundnut/Palm Kernel
Құжатты қарау2.3 Coconut
Құжатты қарау2.4 Palm Fruit

2.2 Groundnut/Palm Kernel

PROCESS

NOTES

Dried nuts

Store

Store in weatherproof, ventilated room, on pallets to keep sacks off the floor. Protect against insects rodents and birds (Fig. 9).

Decorticate/crack

Groundnut decorticators can be manual (Fig. 7) or powered. Palm kernels cracked in motorised hammer mill (termed a kernel cracker).

Grind

Rollers are used for groundnuts, hammer mill for palm kernels. Size of pieces reduced to 6-10 mm for both

Heat condition

Nuts should have moisture content 7-10% and temperature 80°C-90°C. Skill needed to condition correctly.

Press/expell

Pressing 15-20 kg in 20-60 mins (Fig. 4). Expeller 20-50 kg/hour (Fig. 5).

Clarify

Small clarifier available (Fig 6).

Package

Pack in lightproof, airtight containers.

Store

Store away from heat, sunlight etc., shelf life 2-12 months expected depending on packaging and storage conditions.