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Process for preparing an acid resistant cellulose capsule

A technology of cellulose and dissolving cellulose, which is applied in the direction of capsule delivery, medical preparations of non-active ingredients, pharmaceutical formulas, etc., to achieve the effect of improving film strength

Active Publication Date: 2020-08-25
株式会社瑞兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, hard gelatin capsules can present barriers for filling hygroscopic and / or moisture sensitive formulations due to their high water content (11-16 wt%)

Method used

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  • Process for preparing an acid resistant cellulose capsule
  • Process for preparing an acid resistant cellulose capsule
  • Process for preparing an acid resistant cellulose capsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] The present invention can be explained more specifically by the following Preparation Examples, Comparative Preparation Examples and Examples. However, it should be understood that these Preparation Examples, Comparative Preparation Examples and Examples are intended to illustrate and not to limit the scope of the present invention in any way.

[0053] (preparation example)

[0054] Preparation of acid-resistant cellulose capsule of the present invention

[0055] Dissolve 200g of cellulose in 0.8L of purified water heated to 90°C to obtain 1000g of dissolved cellulose aqueous solution. Subsequently, 28 g of amide pectin and 6 g of iota-carrageenan as gelling agents, 0.75 g of potassium carbonate and 0.75 g of calcium gluconate as auxiliary gelling agents, 0.2 g of ice as a pH neutralizer were added to the resulting mixture. Acetic acid, 0.5g sucrose fatty acid ester as emulsifier and 0.02g diacetylated monoglyceride, 0.3g colloidal silicon dioxide as viscosity stabili...

comparative preparation Embodiment 1

[0057] Preparation of acid-resistant cellulose capsule disclosed in WO 2011 / 36601

[0058] Dissolve 200g of cellulose in 0.8L of purified water heated to 80°C to obtain 1000g of dissolved cellulose aqueous solution. Subsequently, 28 g of gellan gum as a gelling agent, 0.5 g of sucrose fatty acid ester as an emulsifier were added to the resulting mixture and stirred. After cooling it slowly to 40°C, the dissolved cellulose mixture is obtained. The obtained cellulose mixture is then allowed to stand, equilibrated and its viscosity adjusted. After heating the cellulose mixture to 65°C, a forming pin was used to form a cellulose capsule. Finally, acid-resistant cellulose capsules can be manufactured after drying them.

[0059] The cellulose capsule prepared in Comparative Preparation Example 1 contained no auxiliary gelling agent, pH neutralizing agent, viscosity stabilizer and plasticizer in the cellulose capsule.

comparative preparation Embodiment 2

[0061] Preparation of acid-resistant cellulose capsules (without viscosity stabilizer and plasticizer)

[0062] Dissolve 200g of cellulose in 0.8L of purified water heated to 80°C to obtain 1000g of dissolved cellulose aqueous solution. Subsequently, 28 g of amide pectin and 6 g of iota-carrageenan as gelling agents, 0.75 g of potassium carbonate and 0.75 g of calcium gluconate as auxiliary gelling agents, 0.2 g of ice as a pH neutralizer were added to the resulting mixture. Acetic acid, 0.5 g of sucrose fatty acid ester as emulsifier and 0.02 g of diacetylated monoglyceride were stirred. After cooling it slowly to 40°C, the dissolved cellulose mixture is obtained. The obtained cellulose mixture is then allowed to stand, equilibrated and its viscosity adjusted. After heating the cellulose mixture to 65°C, a forming pin was used to form a cellulose capsule. Finally, acid-resistant cellulose capsules can be manufactured after drying them.

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Abstract

The present invention relates to a process for preparing an acid resistant cellulose capsule. More specifically, this invention relates to a process for preparing an acid resistant cellulose capsule,comprising the steps of: i) preparing 100 weight parts of an aqueous solution of solubilized cellulose including 15-25 weight parts of cellulose; ii) sequentially adding and solubilizing 2.0-4.0 weight parts of amid pectin and 0.1-1.0 weight part of iota-carrageenan, an auxiliary gelling agent, a pH neutralizing agent, an emulsifying agent, a viscosity stabilizing agent and a plasticizing agent tothe resulting admixture; and iii) allowing the mixture to stand and to be equilibrated with adjustment of viscosity, before forming the capsule.

Description

technical field [0001] The invention relates to a method for preparing acid-resistant cellulose capsules. More specifically, the present invention relates to a method for preparing acid-resistant cellulose capsules, the method comprising the following steps: i) preparing 100 parts by weight of an aqueous solution of solubilized cellulose containing 15-25 parts by weight of cellulose; ii) To the resulting mixture, 2.0-4.0 parts by weight of amide pectin and 0.1-1.0 parts by weight of iota-carrageenan, auxiliary gelling agent, pH Neutralizers, emulsifiers, viscosity stabilizers and plasticizers; and iii) allowing to stand, equilibrate and adjust viscosity prior to forming capsules. Background technique [0002] Gelatin hard capsules using animal protein have been routinely used and commercialized. Recently, gelatin hard capsules have been found to denature due to protein degradation. Furthermore, hard gelatin capsules can present barriers for filling hygroscopic and / or mois...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K9/48A61K47/02A61K47/26A61K47/36A61K47/38
CPCA61K9/4816A61K47/38A61K47/36A61K47/26A61K47/02A61K9/0053A61K47/10A61K47/14A61K47/12A61K9/4825A61K47/34
Inventor 梁周焕
Owner 株式会社瑞兴