Microorganism rapid degumming and warm water retting method for flax

Abstract

Provided is a microorganism rapid degumming and warm water retting method for flax. The inventive retting method for flax comprises: activating the bacterial for 24 hours at 30 DEG C by pectin solid medium, inoculating the activated bacterial with the 1 wt.% of the flax protocorm in the retting container to the retting container, in which the flax protocorm is soaked for 2-4 hours in warm water, then topping up the retting container with clean water, heating to 30-37 DEG C, meanwhile adding 46.3-92.6 g / m3 sodium chloride and 92.6-129.6 g / m3 urea, finishing the retting after 78-100 hours. The method can shorten the zymolysis cycle, improve the yield rate of the flax fiber, increase the intensity of the flax fiber, improve the flax fiber quality, reduce the sewage in the retting.

Description

Technical field: [0001] The invention relates to a method for retting. Background technique: [0002] At present, the method of warm water retting adopted in our country is: firstly, the original stems are divided into various grades, and then the original stems of the same grade are manually bundled into small bundles of about three kilograms each, and the bundled flax original stems are put into retting The loading density in the hemp pond is 95-100 kg / m3, and then the retting pond is filled with clear water and soaked for four hours (this is called 'water first' or 'water once'), and after four hours, the retting pond Drain the water, and then fill the retting pool with clean water (this is called "upper warm water" or "secondary water"). After filling, heat the retting pool to the required temperature (usually 30 ℃~37℃), during the flax retting process, use steam to supplement the temperature (also called gas supplement) twice a day to the required temperature. When ju...

AI Technical Summary

Problems solved by technology

The disadvantages of the above method are: 1. The fermentation period of warm water retting is long: at present, the raw flax stems of the flax raw material factory are basically divided into five grades, and the retting process of each grade is not very consistent. , which is mainly reflected in the different retting temperature and retting time, and the retting process implementation standards of various raw material factories are not very consistent: the retting temperature of 1-3 original stems is 33°C-35°C, and the retting time 110-124 hours; the retting temperature of 4-5 original stems is 30°C-32°C, and the retting time is 95-110 hours

2. The rate of hemp retting in warm water is low

3. The strength of flax fiber produced by warm water retting is low: the fiber strength of the first and second grade original stems produced by natural retting method is 170-180N, the fiber strength of the third grade original stems is 160-170N, and the fourth and fifth grade original stems have a fiber strength of 160-170N. The strength of the fiber produced by the stem is 130-150N

4. Warm water retting consumes a lot of energy: retting production needs to make the temperature in the retting pond reach a certain temperature. To achieve this condition, the factory uses steam to supplement the temperature. In this case, each pond needs to replenish steam twice a day. It takes a lot of steam, that is, a lot of coal