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Decoloration method of dyed gelatin soft capsule shell waste

A soft capsule shell and gelatin technology, which is applied to the preparation methods of peptides, chemical instruments and methods, plastic recycling, etc., can solve the problems of the quality of the gelatin soft capsule shells declining, not being well utilized, and not being able to be recycled, etc. Achieve the effect of avoiding thermal degradation, fast dissolution, and short operation time

Inactive Publication Date: 2014-05-14
方琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of my country's medical industry and the increase of drug manufacturers, the current annual output of capsule shells in China is 1 trillion capsules; 249 manufacturers; 1,000 production lines; the waste rate is about 5%, and there are a large number of waste gelatin soft capsule shells every year Most of them cannot be recycled due to dyeing, which greatly wastes resources, and because gelatin is easily degraded under the action of acid, alkali, enzyme and heat, the quality of these dyed gelatin soft capsule shells will decline after decolorization , can not be well utilized, so there is an urgent need for a decolorization method that can restore the original gelatin properties of dyed gelatin soft capsule shell waste

Method used

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  • Decoloration method of dyed gelatin soft capsule shell waste
  • Decoloration method of dyed gelatin soft capsule shell waste
  • Decoloration method of dyed gelatin soft capsule shell waste

Examples

Experimental program
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Effect test

Embodiment 1

[0051] A kind of decolouring method of dyed gelatin soft capsule shell waste, comprises the following steps:

[0052] (1) Preparation of polyacrylamide aqueous solution

[0053] Weigh the polyacrylamide, add water to the polyacrylamide, stir until the polyacrylamide is completely dissolved to obtain the polyacrylamide aqueous solution, set aside and make the concentration of the polyacrylamide aqueous solution be 0.3%;

[0054] The addition of described water is to be able to make polyacrylamide dissolve completely;

[0055] (2) Preparation of dyed gelatin soft capsule shell waste aqueous solution

[0056] Weigh the waste dyed gelatin soft capsule shell, add water to the waste dyed gelatin soft capsule shell, let it stand until the waste dyed gelatin soft capsule shell is completely expanded, and then heat the above mixture in a water bath at 57°C until the dyed gelatin soft capsule becomes soft. The capsule shell waste is completely dissolved to obtain an aqueous solution o...

Embodiment 2— Embodiment 8

[0065] A kind of decolouring method of dyed gelatin soft capsule shell waste, comprises the following steps:

[0066]Except that process parameters, reagents and reagent content are different, the steps of embodiment 2 to embodiment 8 are the same as embodiment 1. Since there are many embodiments, in order to describe clearly, the following uses the form of table to describe in embodiment 2 to embodiment 8 The process parameters, reagents and reagent content are expressed. As in Table 1:

[0067]

[0068] Table 1: Step parameters of embodiment 2 to embodiment 8

Embodiment 9

[0070] A kind of decolouring method of dyed gelatin soft capsule shell waste, comprises the following steps:

[0071] (1) Preparation of polyacrylamide aqueous solution

[0072] Weigh the polyacrylamide, add water to the polyacrylamide, stir until the polyacrylamide is completely dissolved to obtain the polyacrylamide aqueous solution, set aside and make the concentration of the polyacrylamide aqueous solution be 0.4%;

[0073] The addition of described water is to be able to make polyacrylamide dissolve completely;

[0074] (2) Preparation of dyed gelatin soft capsule shell waste aqueous solution

[0075] Weigh the waste dyed gelatin soft capsule shell, add water to the waste dyed gelatin soft capsule shell, let it stand until the waste dyed gelatin soft capsule shell is completely expanded, and then heat the above mixture in an oil bath at 60°C until the dyed gelatin The soft capsule shell waste is completely dissolved to obtain an aqueous solution of the dyed gelatin soft...

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Abstract

The invention discloses a decoloration method of dyed gelatin soft capsule shell waste. The method comprises the steps of (1) preparing a polyacrylamide water solution; (2) preparing a dyed gelatin soft capsule shell waste water solution; and (3) clarifying flocculation. After the decoloration method of the dyed gelatin soft capsule shell waste is adopted, the original gelatin characteristic of the dyed gelatin soft capsule shell waste can be restored to the utmost extent; the treated gelatin liquid is filtered, sterilized, molded by being frozen, dried and ground, thus being reduced into gelatin containing less glycerin; due to the intervention of the glycerin, the restoration of main physicochemical indexes of the gelatin is more than that of clear gelatin, and other indexes of the gelatin also reach the standard of pharmaceutical gelatin. Furthermore, the decoloration method of the dyed gelatin soft capsule shell waste also has the significances of increasing the recovery rate, saving the cost and protecting the environment, and has the advantages of being simple in technology, affordable and stable in quality.

Description

technical field [0001] The invention relates to the technical field of gelatin capsules, in particular to a method for decolorizing dyed gelatin soft capsule shell waste. Background technique [0002] Capsules include hard capsules and soft capsules. Soft capsules are capsules made by sealing liquid medicine or liquid fruit medicine in soft capsule materials. The capsule shell of soft capsules is made of gelatin, glycerin or Other suitable pharmaceutical excipients are made alone or mixed. The ingredients contained in the soft capsule shell are roughly similar to those of the hard capsule shell. agent, water , Additives four types of substances. [0003] Gelatin is a product purified from animal skin, bone, tendon and ligament after moderate hydrolysis (acid method, alkali method, acid-base mixing method or enzymatic method), or a mixture of the above-mentioned different gelatin products. [0004] With the development of my country's medical industry and the increase of d...

Claims

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Application Information

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IPC IPC(8): C07K1/14
CPCY02W30/62
Inventor 方琴许宏锋胡景晨方庆雪
Owner 方琴
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