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Granule with hydrated barrier material

a technology of hydrated barrier and granule, which is applied in the direction of peptides, enzymology, detergent compounding agents, etc., can solve the problem of difficult to achieve all these desired characteristics at the same time, and achieve the effect of moderate or high water activity

Inactive Publication Date: 2008-08-28
GENENCOR INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]One embodiment of the present invention is a granule that includes a protein core and a hydrated barrier material with moderate or high water activity. The hydrated barrier material can be in one or more layers and / or can be included in the protein core.

Problems solved by technology

It is well known in the detergent industry that the use of enzymes, particularly proteolytic enzymes, has created industrial hygiene concerns for detergent factory workers, particularly due to the health risks associated with dustiness of the available enzymes.
Accomplishing all these desired characteristics simultaneously is a particularly challenging task since, for example, many delayed release or low-dust agents such as fibrous cellulose or warp size polymers leave behind insoluble residues.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Stability of Magnesium Sulfate Coated Protease Granules

[0035]A. In a Deseret 60 fluidized bed coater, 54.1 kg of sucrose / starch non pareil seeds were charged and fluidized. Onto these cores, 75.8 kg of protease UF concentrate containing 62.9 g / kg subtilisin protease were sprayed under the following conditions. (Ranges indicate initial and final values over the course of the specified ramp time):

Ramp time:80minutesFluid feed rate0.6-1.0liter / minAtomization pressure75psiInlet air temperature85-92degrees C.Outlet air temperature50degrees C.Fluidization air rate18m3 / min

[0036]A solution of magnesium sulfate was prepared by adding 22.2 kg of magnesium sulfate heptahydrate into 22.2 kg of water, and this was sprayed onto the enzyme-coated cores under the following conditions in order to provide that 20% of the final granule would be magnesium sulfate heptahydrate, with care being taken to keep the bed temperature close to, but slightly below, 50 degrees C.:

Ramp time:40minutesFluid feed rat...

example 2

Stability of Sodium Citrate Coated Protease Granules

[0045]A. In a Vector 60 coater, 25 kg of sucrose / starch nonpareil seeds were fluidized and 30.9 kg of subtilisin protease concentrate with a concentration of 65.9 g / L and 18.3% total solids were sprayed onto the fluidized cores under the following conditions:

Ramp time:55minutesFluid feed rate0.5-0.9liter / minAtomization pressure75psiInlet air temperature60-95degrees C.Outlet air temperature50degrees C.Fluidization air rate24m3 / min

[0046]A solution of trisodium citrate was prepared by adding 13.2 kg of trisodium citrate dihydrate into 19.7 kg of water, and this was sprayed onto the enzyme-coated cores under the following conditions in order to provide that 25% of the final granule would be trisodium citrate dihydrate, with care being taken to keep the bed temperature close to 50 degrees C.:

Ramp time:23minutesFluid feed rate0.6-1.9liter / minAtomization pressure75psiInlet air temperature60-95degrees C.Outlet air temperature50degrees C.Fl...

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Abstract

A granule having high stability and low dust is described. The granule includes a hydrated barrier material having moderate or high water activity. Also described are methods of producing the granules.

Description

BACKGROUND OF THE INVENTION[0001]Recently the use of enzymes, especially of microbial origin, has become more and more common. Enzymes are used in several industries including, for example, the starch industry, the dairy industry, and the detergent industry. It is well known in the detergent industry that the use of enzymes, particularly proteolytic enzymes, has created industrial hygiene concerns for detergent factory workers, particularly due to the health risks associated with dustiness of the available enzymes.[0002]Since the introduction of enzymes into the detergent business, many developments in the granulation and coating of enzymes have been offered by the industry. See for example the following patents relating to enzyme granulation:[0003]U.S. Pat. No. 4,106,991 describes an improved formation of enzyme granules by including within the composition undergoing granulation, finely divided cellulose fibers in an amount of 2-40% w / w based on the dry weight of the whole composit...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C12N9/00C07K1/00C11D3/38C11D3/386C11D11/00
CPCC11D3/38672C12N9/48C11D11/0088C11D3/386C11D17/0039C11D3/046
Inventor BECKER, NATHANIEL T.CHRISTENSEN, ROBERT I.GAERTNER, ALFRED L.GHANI, MAHMOOD M.DALE, DOUGLAS A.
Owner GENENCOR INT INC
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