Lesquerella seed products and method and device for producing same

摘要

A method for extraction from Lesquerella seeds having an acid value of less than 6 mg KOH/g, said method including the following steps: a seed-processing step i) that includes a single operation of flattening the seeds and at least one operation of drying the seeds; and a step ii) of placing the processed seeds into contact with a mixture of light anhydrous alcohol and co-solvent under temperature and time conditions that are sufficient for extracting a raw oil including phospholipids and gums, as well as obtaining a de-oiled cake.

主权项

1. A process for extracting lesquerella seeds having a degree of acidity of less than 6 mg KOH/g, said process comprising the following steps:
a step i) of conditioning the seeds comprising only one crushing operation and at least one seed drying operation; a step ii) of placing the conditioned seeds in contact with a mixture of anhydrous light alcohol and of cosolvent under temperature and time conditions that are sufficient to extract a raw oil comprising phospholipids and gums, on the one hand, and to obtain an oil-depleted cake, on the other hand; wherein the mixture of step ii) also comprises a basic catalyst under temperature and time conditions that are sufficient to simultaneously extract and trans-esterify the oil and to obtain fatty acid esters and glycerol, on the one hand, and a cake, on the other hand; wherein the fatty acid esters and the glycerol are separated by centrifugation; and wherein the fatty acid esters are washed until neutral according to the following steps:
addition of hot water, centrifugation, followed by drying under vacuum at a temperature of between 80° C. and 100° C. and at a pressure within the range from 10 mbar to 30 mbar.