High temperature-microbe combined hemp degumming method

A degumming method and microbial technology, applied in the direction of bacterial retting, etc., can solve the problems of long degumming time and low degumming rate, achieve soft quality, reduce discharge pressure, and reduce the pressure of enzymatic debonding

Inactive Publication Date: 2006-09-06
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the prior art, the single chemical degumming method seriously pollutes the environment and the single microbial method degumming takes a long time and the degumming rate is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Rinse 50 grams of marijuana with tap water three times and put it into a high-temperature tank, then cook at high temperature. The cooking formula is: 3% sodium hydroxide, 8% sodium sulfide, 0.02% anthraquinone, 2% sodium silicate, Sodium tripolyphosphate 1% (the above percentages are relative dry cannabis weight); bath ratio (the ratio of cannabis weight to aqueous solution volume) is 1:4, the heating rate is 3°C / min, the temperature rises to 135°C, and the pressure is 0.4 MPa , keep warm for 30 minutes. Take it out, wash it with hot water, and dry it.

[0017] 3) Put the washed marijuana into the enzymolysis tank, add 10% by weight of laccase (commercial laccase from Novozymes China Co., Ltd.) aqueous solution, wherein the weight percent of hemp and laccase aqueous solution is 1 : 8, the temperature is controlled at 80° C., the pH is 4.5, and oxygen is passed into the solution at the same time, and the amount of oxygen introduced is 30 milliliters / minute, treated ...

Embodiment 2

[0023] 1) Rinse 50 grams of marijuana with tap water three times and put it into a high-temperature tank, then cook at high temperature. The cooking formula is: 3.5% sodium hydroxide, 8% sodium sulfide, 0.02% anthraquinone, 1.5% sodium silicate, Sodium Tripolyphosphate 1.5%. The bath ratio is 1:3, the heating rate is 1°C / min, the temperature is raised to 135°C, the pressure is 0.4 MPa, and the temperature is kept for 0 minutes. Take it out, wash it with hot water, and dry it.

[0024] 3) Put the washed marijuana into the enzymolysis tank, add 13% by weight aqueous laccase solution, wherein the weight percentage of hemp and laccase aqueous solution is 1:9, the temperature is controlled at 70°C, and the pH is 6.5, Simultaneously feed oxygen into the solution, the feed rate of oxygen is 40 milliliters / minute, handle 9 hours, wash.

[0025] 4) Bleaching the enzymatically hydrolyzed marijuana with hydrogen peroxide at a concentration of 10 g / L, a bath ratio of 1:15, a pH of 10.5,...

Embodiment 3

[0030] 1) Rinse 50 grams of marijuana with tap water three times and put it into a high-temperature tank, then cook at high temperature. The cooking formula is: 4% sodium hydroxide, 8% sodium sulfide, 0.02% anthraquinone, 1% sodium silicate, Sodium tripolyphosphate 2%. The bath ratio is 1:3.5, the heating rate is 2°C / min, the temperature is raised to 135°C, the pressure is 0.4 MPa, and the temperature is kept for 15 minutes. Take it out, wash it with hot water, and dry it.

[0031] 3) Put the washed marijuana into the enzymolysis tank, add 15% by weight aqueous laccase solution, wherein the weight percentage of hemp and laccase aqueous solution is 1:10, the temperature is controlled at 60°C, and the pH is 5.5, Simultaneously feed oxygen into the solution, the feed rate of oxygen is 50 milliliters / minute, handle 10 hours, wash.

[0032] 4) Bleaching the enzymatically hydrolyzed marijuana with hydrogen peroxide, the concentration of hydrogen peroxide is 8g / L, the bath ratio is...

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Abstract

The invention discloses the high temperature-microorganism with hemp degumming method. The method comprises the following steps: cleaning hemp, then carrying out high temperature degumming boiling treatment; putting the hemp into enzymolysis jar, adding 10-15wt% laccase solution, at the meantime, pouring oxygen; carrying out hydroperoxide bleaching to hemp, water scrubbing, dewatering, softening, de-oiling, drying and getting fine hemp. The hemp made with the method is white, soft and good quality. The method adopts the high temperature low-alkali technology, reducing the pollution. Treating the hemp at high temperature low-alkali, it not only destroys the hemicellulose and lignin connected with between hemp fibers, but also lightens the press of enzymolysis, and reaches the purpose of hemp degumming.

Description

technical field [0001] The invention relates to a high-temperature-microbial joint degumming method for marijuana, especially high-temperature degumming for most of the colloids, and enzymatic subsequent treatment can further degumming the residual colloids in the hemp and softening and bleaching the hemp. Background technique [0002] Hemp fiber is one of the earliest natural textile fibers utilized by humans. But because tetrahydrocannabinol (THC) contained in cannabis can produce stimulants and drugs, cannabis planting was prohibited in the world as early as 1937, causing the research and development of hemp fiber to be basically at a standstill. Since Britain developed low-toxic cannabis (THC<0.3%) in 1992, Western countries have lifted the ban on cannabis cultivation. Hemp fiber is also considered by many scientists to be a functional green environmental protection fiber in the 21st century, but the "bottling strength" of hemp application is hemp degumming, because ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/04C12S3/06
Inventor 陈建勇冯新星张建春郝新敏郭玉海张华鹏俞春华
Owner ZHEJIANG SCI-TECH UNIV
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