Method for fractionating <i>Jatropha </i>seeds

摘要

A method for the solvent-free fractionation of jatropha seeds having a phorbol ester content and at least one fraction.

主权项

1. A method for the solvent-free fractionation of dehulled and comminuted jatropha seeds that have a phorbol ester content, in which at least the following fractions are obtained:
a meal fraction having a reduced phorbol ester content relative to the phorbol ester content of the jatropha seeds; a jatropha oil containing phorbol esters; the method steps comprising: providing jatropha seeds; comminuting the jatropha seeds; adding water and acid to the comminuted jatropha seeds to form an oil-containing suspension, wherein the pH value of the suspension is adjusted to ≦3.5; separating jatropha oil from the oil-containing suspension in a centrifugal field to form the jatropha oil and the meal fraction; adding vegetable oil that is one of free of phorbol esters and has a reduced phorbol ester content, to the meal fraction; and separating an oil phase from the meal fraction in a centrifugal field.