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Degumming method of flax and enzyme preparation for using in degumming

A degumming method and enzyme preparation technology, applied in the direction of biochemical equipment and methods, enzymes, enzymes, etc., can solve the problems of long retting cycle, reduced quality of hemp, and low production rate of long flax fibers

Active Publication Date: 2011-10-05
SHANGHAI KDN BIOTECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional retting has the following disadvantages: the retting cycle is long, the fiber strength is damaged, resulting in a decrease in the quality of the retting and a low production rate of flax long fibers
However, the process of culture and function of bacteria is very complicated and difficult to control, which is easy to produce miscellaneous bacteria in the degumming process, which affects product quality
At the same time, if the large amount of biological bacteria remaining in the wastewater after flax degumming is not properly inactivated, it will cause secondary pollution to the environment when the wastewater is discharged

Method used

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  • Degumming method of flax and enzyme preparation for using in degumming

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Raw material selection: Winter flax produced in Anxiang, Hunan is used, stored for more than one year, and a small amount of mildew occurs.

[0034]Select full flax stems and bundle them into bundles. Inject water into the degumming tank, adjust the pH value of the water to 8.5, heat slowly to 32°C and keep warm, then inject 40kg of enzyme preparation into the degumming tank to obtain a mixed solution. Weigh 5000kg and put it into the degumming tank, so that the mixed solution is completely soaked into flax. The bath ratio of flax and water is 1:13, start retting and degumming. After 60 hours, the flax was fished out from the pool.

[0035] The flax that has been retting and degummed is dried to obtain dry stems. The dry stems are stacked together for 18h. After the dry stems are kept healthy, take a 100kg small sample and go on the machine to beat the flax fiber. The performance test of the obtained flax fiber is shown in sample 1 in Table 1.

Embodiment 2

[0037] The flax was degummed according to the degumming method of Example 1, the enzyme dosage was 60kg / pool, and the performance test of the obtained flax fiber was as shown in sample 2 in Table 1.

Embodiment 3

[0039] The flax was degummed according to the degumming method of Example 1, the enzyme dosage was 80kg / pool, and the performance test of the obtained flax fiber was shown in sample 3 in Table 1.

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Abstract

The invention provides a degumming method of flax, comprising the following steps: adjusting the PH value of water to 8.5-9.5, heating to 20-55 DEG C, adding the enzyme preparation composed of hemicellulase and alkaline pectinase with enzyme activity of 50-5000 U / ml in the water to obtain a mixed solution, adding flax in the heated mixed solution to ret and degum, and drying, cultivating and scotching the degummed flax to obtain linen fibers. The invention also provides an enzyme preparation for degumming of the flax, comprising hemicellulase and alkaline pectinase with enzyme activity of 50-5000 U / ml. According to the invention, by using the enzyme preparation for degumming, the degumming time is short, the intensity of the scotched flax is high, the yielding of linen fibers is high, the evenness is good, the operation is simple without the process of bacteria producing enzyme, and degumming waste can be reused or discharged to farmland so as to reduce the cost of industrialization of degumming.

Description

technical field [0001] The invention relates to the field of flax degumming, in particular to a flax degumming method and an enzyme preparation for degumming. Background technique [0002] Flax is an ancient bast fiber crop that originated in the Near East and the Mediterranean coast. As early as the Neolithic Age more than 5,000 years ago, Swiss lake dwellers and ancient Egyptians had cultivated flax and used its fibers to weave clothing. Flax fiber has the characteristics of strong tensile force, softness, good fineness, weak conductivity, fast water absorption and dispersion, and high expansion rate. It can be spun into high-count yarns and made into high-grade clothing materials. Flax, like all bast fiber crops, contains water-insoluble derived pectin in the cell wall and intercellular layer. Due to the viscosity of the derived pectin itself, it can bond and fix the cells and cells of the bast parenchyma. Bast fiber cells form an organic whole. The purpose of degummin...

Claims

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Application Information

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IPC IPC(8): D01C1/00C12S11/00C12N9/42C12N9/26
Inventor 吕家华刘鲁民沈克群李新山王虎周英俊
Owner SHANGHAI KDN BIOTECH
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