Neem oil extraction Plant
- Thread starter naveensp
- Start date
Hi naveeen
There are two main commercial processes: pressing and extracting the neem oil.
For pressing the seed kernels are crushed and squeezed. This releases and separates the oil. Some of the active ingredients in neem oil are susceptible to heat, so cold pressed oil is the best.
Extracting the neem oil means soaking the crushed kernels in an organic solvent. Usually hexane is used. This neem oil extract is inferior to cold pressed neem oil.
The kernels may be pressed first, and then the neem oil in the remaining neem seed cake is extracted with hexane. In India that extract is mostly used for soap making.
1. Low Tech Method Of Extracting Neem Seed Oil
There is a way to make your own neem seed oil. It will not give you high yields, and it will not be of the best quality. But it will give you some oil...
* Crush, grind, pound or otherwise smash up the seed kernels.
* Put them in a bowl or bucket and cover with water.
* The oil floats on top and can be skimmed off.
2. Making A Watery Neem Seed Extract
To make a strong enough extract with water you need about 500 g of seed kernels to 10 l of water. (Of course you can adjust the overall amount as required.)
* Crush, grind, pound or otherwise smash up the seed kernels.
* Put them in a cloth bag and suspend it over a big enough bucket.
* Add the water through the cloth bag and catch the extract in the bucket.
Alternatively you could just put the bag inside a bucket or tub and steep it over night, but the above method will give a more powerful extract.
The extract can be used as is. However if you want to use it for spraying you will need to filter it first or it will clog up your sprayer.
This by the way is the most common method of using neem in agriculture in third word countries. 20 - 30 kg of kernels usually treat about one hectare. That means you need about 50 liters to treat 1000 m2.
Regards
Ashwini
There are two main commercial processes: pressing and extracting the neem oil.
For pressing the seed kernels are crushed and squeezed. This releases and separates the oil. Some of the active ingredients in neem oil are susceptible to heat, so cold pressed oil is the best.
Extracting the neem oil means soaking the crushed kernels in an organic solvent. Usually hexane is used. This neem oil extract is inferior to cold pressed neem oil.
The kernels may be pressed first, and then the neem oil in the remaining neem seed cake is extracted with hexane. In India that extract is mostly used for soap making.
1. Low Tech Method Of Extracting Neem Seed Oil
There is a way to make your own neem seed oil. It will not give you high yields, and it will not be of the best quality. But it will give you some oil...
* Crush, grind, pound or otherwise smash up the seed kernels.
* Put them in a bowl or bucket and cover with water.
* The oil floats on top and can be skimmed off.
2. Making A Watery Neem Seed Extract
To make a strong enough extract with water you need about 500 g of seed kernels to 10 l of water. (Of course you can adjust the overall amount as required.)
* Crush, grind, pound or otherwise smash up the seed kernels.
* Put them in a cloth bag and suspend it over a big enough bucket.
* Add the water through the cloth bag and catch the extract in the bucket.
Alternatively you could just put the bag inside a bucket or tub and steep it over night, but the above method will give a more powerful extract.
The extract can be used as is. However if you want to use it for spraying you will need to filter it first or it will clog up your sprayer.
This by the way is the most common method of using neem in agriculture in third word countries. 20 - 30 kg of kernels usually treat about one hectare. That means you need about 50 liters to treat 1000 m2.
Regards
Ashwini
mithuindia2006
New Member
what abt demand?
is there is demand for neem oil, which type of oil have demand?
is there is demand for neem oil, which type of oil have demand?