Natural CNSL is obtained by the utilization of some solvent extraction technique (commonly soxhlet, supercritical carbon dioxide, or subcritical water) in order to obtain its constituents under mild conditions, without promoting any chemical...
CNSL can be extracted by the expeller method but the oil has to be heated after extraction to convert anacardic acid to car- danol . The expelled and heated CNSL will have less amount of polymerised CNSL...
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