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Method of coagulating natural rubber fresh latex with fungus culture medium

A technology of natural rubber and fungus culture, applied in fungi and other directions, can solve problems such as unsatisfactory results, save energy, reduce production costs, and improve the quality of rubber products

Inactive Publication Date: 2007-02-28
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is C.K.JOHN or Wang Zhongmin's research, the coagulation time is at least 6 hours, and the effect is not satisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. Take a test tube slant culture of the fungus Trichoriella ornithopoda Oorschot et de Hoog and insert it into 100ml liquid medium that has been boiled and cooled and then composed of 100 parts of biologically coagulated whey and 3.5 parts of molasses. Cultivate at low temperature for 2 days, insert this culture solution into 900ml of fresh biocoagulated whey added with 31.5g of molasses, and cultivate at a temperature of 28°C to 31°C for another 2 days, and set aside.

[0026] b. Get 1000ml of the culture solution cultivated by the above method, add 1g of calcium chloride (made into 10% to 20% aqueous solution) and mix evenly, pour into 10kg of dry latex with a content of 20% fresh latex, stir evenly, and let it stand for solidification .

Embodiment 2

[0028] a. Take a test tube slant culture of the fungus Trichoriella ornithopoda Oorschot et de Hoog and insert it into 100ml liquid culture medium that has been boiled and cooled and then composed of 100 parts of acid coagulated whey and 5 parts of molasses. Cultivate at low temperature for 2 days, insert this culture solution into 900ml of fresh acid-coagulated whey added with 45g molasses, and cultivate at a temperature of 28°C to 31°C for another 2 days, and set aside.

[0029] b. Get 1000ml of the nutrient solution cultivated by the above method, add 1.25g of calcium chloride (made into a 10% to 20% aqueous solution) and mix evenly, pour 10kg of dry glue into 25% fresh latex, stir evenly, and let it stand solidification.

Embodiment 3

[0031] a. Take a test tube slant culture of fungus Trichoriella ornithopoda Oorschot et de Hoog and put it into 100ml boiled and cooled liquid culture medium composed of 100 parts of water and 6 parts of molasses, and cultivate it at a temperature of 20°C to 25°C After 5 days, this culture solution was inserted into 900 ml of water added with 54 g of molasses, and then cultivated at a temperature of 20° C. to 25° C. for 5 days, and set aside.

[0032] b. Get 1000ml of the nutrient solution cultivated by the above method, add 3g of calcium chloride (made into a 10%-20% aqueous solution) and mix evenly, pour 10kg of dry glue content into 30% fresh latex, stir evenly, and let it stand for solidification .

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PUM

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Abstract

The invention discloses a method to screen selecting fungi Trichoriella ornithopoda Oorschot et de Hoog culture water and calcia chloridum mixed freezing natural rubber latex from waste disposal basin of producing natural rubber; which is characterized by the following parts: shortening time of biological freezing; the time of biological freezing shorten from 6 hours to 3min- 2h and rationalize property of product is better than acid freezing. The invention is fit for rubber-clear freezing and freezing of low ammonia latex with ammonia quantity less than 0.04%.

Description

field of invention [0001] The invention relates to the processing of natural rubber dry rubber, in particular to a method for coagulating fresh natural rubber latex. Background technique [0002] The latex contaminated by microorganisms destroys the stability of latex due to the decomposition and utilization of non-glue components in the process of microbial growth and reproduction, resulting in deterioration, coagulation, and odor of latex. This coagulation form of latex is called natural coagulation. The latex coagulation in current production all adopts acid coagulation, promptly adds acidic chemical agent (formic acid or acetic acid) in fresh latex, reduces the pH value of latex, destroys the stability of latex, makes the rubber particles in latex mutually gather, coagulates. into blocks, this form of coagulation is called acid coagulation. The coagulation of these two methods has its own advantages and disadvantages. The cost of natural coagulation is low, and the prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C1/15C12N1/14
Inventor 刘培铭陆衡湘邓维用张北龙丁丽
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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