公开(公告)号：NO992874D0

公开(公告)日：1999-06-11

申请号：NO992874

申请日：1999-06-11

Applicant: BASF AG

Inventor： AUWETER HELMUT ,  BOHN HERIBERT ,  LUEDDECKE ERIK

IPC: A23K20/179 ,  A23L1/275 ,  A23L5/44 ,  A61K9/14 ,  A61K9/16 ,  A61K31/047 ,  A61K31/122 ,  A61K47/08 ,  C09B61/00 ,  C09B67/42 ,  C09B67/46

Abstract: Preparation of a stable aqueous dispersion, or a stable water-dispersible dry powder, of xanthophylls, which comprisesa) preparing a molecularly dispersed solution of at least one xanthophyll, with or without an emulsifier and/or an edible oil, in a water-miscible organic solvent, or a mixture of water and a water-miscible organic solvent, at above 30° C.,b) mixing this solution with an aqueous solution of a mixture of protective colloids,b1) in which the mixture comprises at least one low-molecular-weight protective colloid component and at least one high-molecular-weight protective colloid component, whose mean molecular weights differ by at least 10,000,b2) the solvent component being transferred to the aqueous phase and the hydrophobic phase of the xanthophyll being formed as a nanodispersed phasec) and if appropriate, to prepare a water-dispersible dry powder, freeing the resulting dispersion from the solvent and the water and drying it in the presence or absence of a coating material.

公开(公告)号：CA2274467A1

公开(公告)日：1998-06-18

申请号：CA2274467

申请日：1997-12-01

Applicant: BASF AG

Inventor： BOHN HERIBERT ,  LUEDDECKE ERIK ,  AUWETER HELMUT

IPC: A23K20/179 ,  A23L1/275 ,  A23L5/44 ,  A61K9/14 ,  A61K9/16 ,  A61K31/047 ,  A61K31/122 ,  A61K47/08 ,  C09B61/00 ,  C09B67/42 ,  C09B67/46

Abstract: In a process for producing a stable, aqueous dispersion or a stable, waterdispersible dry xanthophyll powder: (a) a molecular disperse solution of at least one xanthophyll, if required together with an emulsifier and/or an edible oil is produced in a water-miscible organic solvent or in a mixture of water and a water-miscible, organic solvent, at temperatures above 30 ~C; (b) this solution is mixed with an aqueous solution of a mixture of protective colloids; (b1) the mixture containing at least one low molecular protective colloid component and at least one high molecular protective colloid component whose molecular weights differ by at least 10,000; (b2) the solvent component being converted into the aqueous phase and the hydrophobic phase of the xanthophyll being produced as a nanodisperse phase; and (c) if required, the thus obtained dispersion is freed from solvent and water to produce a waterdispersible dry powder and dried, if required in the presence of a coating material.

公开(公告)号：DE19637517A1

公开(公告)日：1998-03-19

申请号：DE19637517

申请日：1996-09-13

Applicant: BASF AG

Inventor： AUWETER HELMUT ,  BOHN HERIBERT ,  HABERKORN HERBERT ,  HORN DIETER ,  LUEDDECKE ERIK ,  RAUSCHENBERGER VOLKER

IPC: A23K1/16 ,  A23L1/275 ,  A23L5/44 ,  A61K9/16 ,  C07C403/24 ,  C09B61/00 ,  C09B67/06 ,  C09B67/10 ,  C09B67/46