Bio-pesticides are derived as residual bi-products after fermentation of the jatropha crude oil for biodiesel production
Crude oil is oil got from directly extracting process. you can use an oil extracting machine such as screw oil press or hydraulic oil press which are common oil extracting machines used for this.
The price FOB port of shipment for one MT of Jatropha oil purpose seeds is around USD$100 - 120. The price for one MT of jatropha crude oil is around USD$ 700.
Sip it through a straw.
Crude Fibre is named so because of extracting through acid alkali digestion method. Dietary fibre is not easily digested by our body enzymes and helps in stool movement after fermented by microbes
mazut is a dirty oil. left over after extracting high grade fuels from the crude
The best method is fractional distillation.
what is the crude method meant by the auther
Aristotle
In simple terms.. Fractional distillation. The crude is heated, and the vapours collected. The vapours are then condensed - producing petrol.
in short, crtstallisation is the method that is used to purify the substance.crude product is an impure substance.so,if we want to purify a substance then we have to use crystallisation process.therefore there is a need to crystallise a crude product.
because in xylene water is inmisible that is why in dean & stark method xylene is use
Filtration is a good method for this (you can decant also, but this is crude)