Preparation method of banana fiber from banana stems and leaves by steam explosion degumming

A technology of banana fiber and banana stem, which is applied in the chemical post-processing of fiber, the production of bast fiber by chemical method, fiber treatment, etc., can solve the problems of serious pollution, immature banana fiber degumming technology, etc., and improve yield and quality. , the effect of reducing the preparation cost and avoiding environmental pollution

Inactive Publication Date: 2011-03-02
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Description
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AI Technical Summary

Problems solved by technology

[0013] [objective of the present invention] the object of the present invention is to provide a method for preparing banana fiber by st

Method used

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  • Preparation method of banana fiber from banana stems and leaves by steam explosion degumming

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Effect test

Embodiment 1

[0020] (1) Steam explosion: the collected fresh banana stems and leaves are cut to a length of 5-10cm, and the steam explosion is carried out under a pressure of 1.4MPa for 4min;

[0021] (2) Rinse steam-exploded banana stems and leaves: rinse the steam-exploded banana stems and leaves with 10-20 times of water to remove degraded pectin, hemicellulose, and lignin components;

[0022] (3) Bleaching of steam-exploded banana stems and leaves: two-stage bleaching technology is adopted, and the composition of the first-stage bleaching solution is (g / L): Na 2 SiO 3 , 10; H 2 o 2 , 10; NaOH, 10, at 60°C, bleach for 40min, the composition of the second bleaching solution is (g / L): NaOH 2 SiO 3 , 5; H 2 o 2 , 5; NaOH, 5, at 50 ° C, each bleached for 30 minutes, the solid-to-liquid ratio: 1 / 10-1 / 20; after the bleaching is completed, the banana fiber can be obtained by rinsing. The yield of banana fiber is 7.6% of fresh weight of raw material

Embodiment 2

[0024] (1) Steam explosion: collect naturally dried banana stems and leaves, cut to a length of 10-15cm, and carry out steam explosion treatment under a pressure of 1.6MPa for 3 minutes;

[0025] (2) Steam-exploded banana stem and leaf rinsing: the steam-exploded raw materials are rinsed with 20 times of water to remove degraded pectin, hemicellulose, and lignin components;

[0026] (3) Bleaching of steam-exploded banana stems and leaves: two-stage bleaching technology is adopted, and the composition of the first-stage bleaching solution is (g / L): Na 2 SiO 3 , 10; H 2 o 2 , 10; NaOH, 10, the composition of the second bleaching solution is (g / L): NaOH 2 SiO 3 , 5; H 2 o 2 , 5; NaOH, 5, all bleached at 50°C for 20 minutes each, solid-to-liquid ratio: 1 / 10-1 / 20; after bleaching, the banana fiber was obtained by rinsing. The yield of banana fiber was 38% of the dry weight of the raw material.

Embodiment 3

[0028] ((1) Steam explosion: collect and collect naturally dried banana stems and leaves, cut into lengths of 5-10cm, and carry out steam explosion treatment under a pressure of 1.4MPa for 8 minutes;

[0029] (2) Rinse steam-exploded banana stems and leaves: rinse the steam-exploded raw materials with 15 times of water to remove degraded pectin, hemicellulose, and lignin components;

[0030] (3) Bleaching of steam-exploded banana stems and leaves: two-stage bleaching technology is adopted, and the composition of the first-stage bleaching solution is (g / L): Na 2 SiO 3 , 10; H 2 o 2 , 10; NaOH, 10, the composition of the second bleaching solution is (g / L): NaOH 2 SiO 3 , 5; H 2 o 2, 5; NaOH, 5, all at 55 ° C, each bleached for 30 minutes, the solid-to-liquid ratio: 1 / 20; after bleaching, the banana fiber was obtained by rinsing. The yield of banana fiber was 45% of the dry weight of the raw material.

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Abstract

The invention belongs to the resource utilization field of natural plant fiber, in particular relating to a preparation method of banana fiber from banana stems and leaves by steam explosion degumming. The method comprises the steps of performing steam explosion on the banana stems and leaves after cutting, and rinsing and bleaching to obtain the high quality banana fiber. The water steam is used as the medium in the steam explosion process without any addition of the chemical reagents, so the preparation method of the invention has no pollution. The steam explosion process degrades more than 90% of the pectin and the hemicellulose in the banana stems and leaves, degrades parts of the lignin, and completely separates the fibre bundles of banana stems and leaves from other components. The rinsing operation can remove other tissues except for the fiber, and the banana fiber is torn into the loose structure in the steam explosion process which facilitates the bleaching, the oil feeding and the loosening of the fiber and improves the fiber quality. The invention provides the novel preparation method of the banana fiber, which can reduce the degumming cost of the banana fiber, as well avoid the environmental pollution caused by the traditional degumming methods and enhance the fiber yield and quality.

Description

technical field [0001] The invention belongs to the field of utilization of natural plant fibers, and in particular relates to a method for preparing banana fibers by steam explosion degumming and cleaning of banana stem and skin fibers. technical background [0002] Banana fiber can be divided into banana stem fiber and banana leaf fiber. The banana stem fiber is contained in the bast of the banana tree, which belongs to the bast fiber; the banana leaf fiber is contained in the leaves of the banana tree, which belongs to the leaf fiber. At present, banana fiber in the world has not been developed and utilized on a large scale. About 129 countries in the world grow bananas, and a huge amount of banana stems and skins are discarded every year. Japan is at the forefront in the research and development of banana fiber. Some companies have successfully realized the industrialization of banana fiber. India and other Southeast Asian countries with rich banana resources have also ...

Claims

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Application Information

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IPC IPC(8): D01C1/00D01C1/02
Inventor 陈洪章彭小伟
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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