Method for preparing starch microspheres

Abstract

The invention discloses a method for preparing starch microspheres, which comprises the following steps of: stirring 20 to 70 percent of plant starch emulsion at the constant temperature in the critical temperature of starch gelatinization for 10 to 30 minutes under the action of 2 to 15 percent of water-soluble thickening agent, standing, cooling naturally, removing supernate, washing, and drying to prepare the starch microspheres. The surfaces of the prepared starch microspheres are smooth, the inner part is hollow, one or more nano-scale micropores are distributed on the surface, the wall thickness is uniform, the grain diameter is between 10 and 100 micrometers, and the wall thickness is between 1 and 10 micrometers. The prepared starch microspheres have a simple preparation process and readily available materials, and are widely applied to fields of medicines, cosmetics, food modifiers, printing ink, papermaking and the like.

Description

technical field

[0001] The invention relates to a carrier starch microsphere, in particular to a preparation method of the starch microsphere. Background technique

[0002] In the prior art, the starch microspheres used as carriers are mostly microporous starch microspheres, the surface of which is porous, and the micropores cover the entire surface of the starch granules and go deep from the surface to the center. As a drug carrier, the sustained release rate of the drug can be controlled. , but as the preparation method is not used, it will directly lead to the slow-release effect of starch microspheres as the carrier.

[0003] At present, the preparation methods of starch microspheres mainly include enzymatic hydrolysis. The preparation process is the steps of enzymolysis of raw starch in a suitable pH range, centrifugation, washing, deenzyme removal, and drying to obtain porous starch microspheres. There are many factors affecting the microporous starch prepared by enzy...

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