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close this book Food Chain No. 13 - November 1994
View the document Greetings
View the document The ancient art of biotechnology
View the document Equipment
View the document Booklines
View the document Fermented foods in Sudan
View the document Mursik - fermented miIk in Kenya
View the document The production of Hate de coco
View the document Resource page
View the document Bakers' yeast
View the document Recipe page
View the document Acknowledgments



Following on from the report in the 'Oils' issue of Food Chain (5) of March,1992, we have received a brief update on oil expelling in Nepal from Development Consultancy Services (DCS) who are ready to provide technical assistance on oilseed processing technology to any interested parties. Please free to contact Mahendra Neupane, DCS, PO Box 8, Nepal. Phone +977 0 73 20391. Fax. + 977 0 73 20465.

Small oil mills are important features of the economy of Nepal At present more than 1,0( small oil mills are running in Nepal. Most of them are imported from India. They are heavy in weight which makes transportation to the installation sites difficult. Additionally, their power consumption is high which causes high operational costs. Access to quality spa parts is also a problem.

Keeping these facts under consideration, DCS with technical assistance of FAKT/ Germany (Association for Appropriate Technologies for Third World) and Tinytech Limited Rajkot, India, have modified the heavy weight expeller to an energy efficient and kg weight oil expeller named sundhara, meaning golden stream. The recent version of the Sundhara oil Expeller is 3 4.


- The weight of the expeller has been reduced from 1000kg to 265kg.

- The energy consumption has been reduced by 30 per cent

- The power requirement of the expeller has been halved to 3 kW.

- The cone is now adjustable during operation, thereby allowing the miller to adjust the machine for different oilseeds.

- 2 to 3 passes through the expeller yields a rape seed cake with an oil content of per cent compared with 6 to 10 passes and a residual oil content of 12 to 14 per cent.

- Surface hardened spare parts can be used for a long time without the need to change them frequently.



Details have been sent by Professor P A Unde of Mahatma Phule Krishii Vidyapeeth, Rahuri, Pin 413 722 District, Ahmednagar, Maharashtra, India, of work with a modified pomegranate seed extractor. We have not tried this equipment but if you require information or have any queries, write to Professor Unde at the above address.

Briefly, it consists of a hopper, shaft with knives, outlet chutes for seed and rind, and power transmission. The unit is fabricated partly in mild steel, with acid resistant stainless steel used for parts coming in contact with the seed The performance was compared with hand separated seeds on the basis of seed and rind separation. Seed separation efficiency of the machine was 86 per cent; average purity of the seed 96 per cent; rind separation was very efficient, on average 13 per cent seed with the rind, (which could then easily be separated using a screen). The results indicate juice percentage in the fruit was 50 per cent (on fruit waste basis), and the average edible portion was 71 per cent The average time to extract seed from one fruit was 5 seconds, with a capacity estimated at 150kg/hour. Feeding the machine was very easy, whole fruit can be used without cutting, however, care must be taken to use only best quality fruit. The unit can be operated by an unskilled person and requires only a one horse-power motor.



Pomegranate seed separator


Feeding chute




Shaft with pulley






Seed outlet


Rind outlet


Electric motor