May 30, 2016

Posted by in 2016, Field Visit, Mahuwa seed cracker and Oil Extracter, News | 0 Comments

Field Visit : Mahuwa Nut Cracker


LOCATION: Meghraj, Sarangpur and Munshiwada (Gujarat)

This survey was conducted to understand the problem of nut cracking at a much deeper level to rectify it from its core.

Problem statement: To find the most efficient idea and create a prototype which will suit the public in general across the country.
⦁ Create a mind map.
⦁ Prior research and going through existing patents.
⦁ Understanding the method personally.
⦁ Field visit.
⦁ Recollection of data and reports.
⦁ Prototype design.
⦁ Prototype development.
⦁ Field testing.

Mind map:

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Prior Research:
Field Visit Report

Location: Meghraj, Sarangpur and Munshiwada (Gujarat).

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Family survey:
Subject 1
Name: Rameshbhai
Contact info: +91 93839932
Introduction: Ramesh bhai has a family of 4 and own 5 trees .They use traditional methods of oil extraction which is used for household purposes. The entire process is generally taken care by Rameshbhai and his wife.

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Subject 2
Name: ValiaBhikha Bhai
Contact info: +919512531878
Introduction: Valiabhai owns 10-15 trees of Mahuwa with an average production of 20 kgs per tree. Mainly the flowers and seeds are sold at the price of 600-700 INR per 20 kgs. The family of 8 takes almost one month to carry out the entire process of oil extraction which is used for cooking and other purposes.

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Subject 3
Name: Damar Ramesh Bhai
Contact no: +91-9925431053
Introduction: This family owns 40 trees and use all the by-products produced in the process. They use the green outer layer for fertilizers. The kernel left after the whole process of extraction is converted into cakes and fed to cattle.

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Subject 4

Name: RamajiDhimaji (Vaidyanath)
Contact no: +91 99 25 971043
Introduction: Ramaji is a farmer by occupation and also has a medical expertise. He was honoured by Rashtrapti award in the year 2012. With his family of 7 he grows many medicinal herbs such as Sandal wood, Lemon saplings, Aloe Vera etc.

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1. What is the different technique for nut cracking?
2. Is it necessary to dry the seed in sun light?
3. What are the products they make out of mahuwa?
4. Avg seed production per day (The scale of our machine, e.g. capacity).
5. What is the use of flower and fruit?
6. What do they do with the waste? Is it harmful for the environment?
7. What is the rate they sell Mahuwa products?
8. Workforce required for prod (Basically the economy of Mahuwa)?
9. Who operates the machine, (e.g. men, women, kids)?
10. Detailed mechanism of mahuwa oil production?
11. Additional instruments/equipment/resources required for production?
12. Storage capacity for the production?
13. Lifestyle of the participants?
14. Why can’t we just use simpler techniques like mustard oil thingy or Menthol oil production?
15. Do they face problem while picking the fruit? How significant is it?
16. Is there any chemical method to purify/refine the oil after extraction?

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17. Status of Socio-economy such as electricity, water etc?
18. What is the total production cost in terms of money as well as time?
19. Viability of fruit as in how long and in what conditions it can be stored?
20 Ask for how much force is required for cracking. How much do they fine the seed particle? What do they do of the kernel? How much they grind the moisturized seed. What is the efficiency of the process. ?
21. Any specific features of the stones or the equipment or the process that they use?
22. Are they ready to use alternative ideas
23. Affordability?
24. Effect in production by our method?
25. Gender and age?
26. What level are they comfortable in using?
27. Education of participants?
28. Cattle?
29. Traditional method?
30. Community?
31. Their suggestions and ideas.
32. What products do they sell?
33. Preservation method?


⦁ An average tree produces 15-20kgs of fruits throughout the season.
⦁ Mahuwa trees last for more than 100 yrs.
⦁ All the fruits are handpicked which causes shoulder and back problems.
⦁ The seeds are cracked by stones, and there is no alternate method for it.

⦁ Kernel is extracted manually, which is time consuming.
⦁ Oil produced in the process is used by the family and no part is sold. The kernel is given to a local market proprietor for grinding.
⦁ The waste generated after extraction isn’t returned to the farmers, but kept by the grinding person.
⦁ The rate of grinding is Rs 40/20kgs.
⦁ The cultivators were eager for a solution which can help them out and is cost effective and efficient.
⦁ There is no need to steam the seeds before grinding which is traditionally used.
⦁ It takes 3-5 days to dry the kernel in direct sunlight.
⦁ It is used as an alternative for the edible oil.
⦁ The outer cover of the fruit is soft and can be removed by pressing through hand.
⦁ The outer pulp of the fruit is used in fertilizers.
⦁ These seeds can be preserved for more than a month after plucking.
⦁ There has been no other mechanism other than stone hammering of the seed.
⦁ There is a specific pressure point at the seed from where it breaks into two pieces with very minimal force.


⦁ The shell covering the kernel is very smooth, slippery, tough and brown in color.
⦁ After cracking the outer shell of kernel, it is hard to remove the shell from kernel (egg analogy).
⦁ Affordability: participants suggested that they can afford a machine in a range of rs. 2000 to rs. 3000.
⦁ After oil extraction, the residue of kernel is used in making kanjar cake, which is used to feed cattle.
⦁ The unripened seeds can be ripened by spraying water over it.
⦁ At no point of time water should be used on ripened seeds, as it destroys the fruit.
⦁ There can be multiple seeds in one fruit.
⦁ No new trees are being planted and the farmers depend on the existing ones.

We came up with a bunch of ideas and designs for the prototype and we are still brain storming for more. Now we have to figure out the most efficient and cost effective prototype to suit our consumers need.

Following are few such of the examples:


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