Chemical reagent gas

Hydraulic and mechanical press extraction differs from the other extraction methods in its technical simplicity ease of operation, assembly, and maintenance, and especially in its positive cost-benefit ratio. This method of extraction does not require the use of chemical reagents, gas, electricity, or any form of fuel for its operation, and it does not release toxic waste to the environment because it uses simple equipment that operates exerting pressure on the material causing the extraction of the lipid content by the rupture of the matrix, resulting in the extraction of oil and its defatted cake. 

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