Patent · US Expired

Process for de-oiling crude lecithin

US5597602A · kind A · utility

14Cited by

7References

20Claims

0Family size

Assignee

Siegfried Peter · DE

Inventors

Siegfried Peter · Erlangen, DE
Bernd Czech · Erlangen, DE
Eckard Weidner · Bochum, DE
Zhenfeng Zhang · Foshan, CN

Key dates

Filing date	Apr 21, 1995
Grant date	Jan 28, 1997
Priority date	—
Expiry date	Apr 21, 2015

Classification

Technology area (CPC A)Human Necessities
CPC primaryA23J7/00
WIPO fieldFood chemistry
WIPO sectorChemistry

Abstract

A process for recovering lecithin from oil- and lecithin-containing mixtures, comprising extracting a lecithin/oil mixture with an extractant selected from the group consisting of a hydrocarbon having 3 carbon atoms, an unbranched hydrocarbon having 4 carbon atoms, a branched hydrocarbon having 4 carbon atoms, and mixtures thereof, at a pressure of from 1 to 8 MPa and a temperature of from 20 to 100.degree. C., which conditions ensure liquid phase extraction with the development of two liquid phases, one of which is an oil enriched liquid hydrocarbon phase and the other of which is a lecithin enriched hydrocarbon phase; separating the two liquid hydrocarbon phases; and recovering substantially lecithin-free oil from the oil-enriched phase and substantially oil-free, pure lecithin from the lecithin-enriched phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.