The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2013
Filed:
Nov. 06, 2008
Kento Kanaya, Hyogo, JP;
Masao Sato, Hyogo, JP;
Akihisa Kanda, Hyogo, JP;
Kaneka Corporation, Osaka, JP;
Abstract
A method for production of fine microcapsules which encapsulate a hydrophilic bioactive substance at a high content and can be used in wide range of applications such as foods and medical drugs, which method enabling efficient industrial production, is provided. A method for production of S/O type microcapsules including the steps of: (1) emulsifying and dispersing a mixture of a solid fat and an aqueous solution containing a hydrophilic bioactive substance at a temperature of at least the melting point of the solid fat to obtain a W/O emulsion; (2) removing moisture in the W/O emulsion at a temperature of at least the melting point and lower than the boiling point of the solid fat to obtain an S/O suspension; (3) adding the S/O suspension into an aqueous phase containing at least one selected from a surfactant (B), a thickening agent and a hydrophilic organic solvent, and permitting liquid droplet dispersion at a temperature of at least the melting point and lower than the boiling point of the solid fat to obtain an S/O/W emulsion; and (4) cooling the S/O/W emulsion to lower than the melting point of the solid fat to harden the solid fat, and further removing the moisture at a temperature lower than the melting point of the solid fat.