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Extraction method and purpose of jute fiber extracts with bacteriostatic activity

A jute fiber and extraction method technology, applied in the directions of botanical equipment and methods, fiber treatment, application, etc., can solve the problems of low bacteriostatic activity, easy loss of activity, and low raw material yield of extracts, and achieves inhibition of Escherichia coli activity, Improved extraction efficiency and large surface area

Inactive Publication Date: 2012-08-29
JIANGSU REDBUD DYEING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to overcome the defects of low raw material yield, low antibacterial activity and easy loss of activity of the extract in the existing jute extraction process, and provides a kind of ester solvent extraction with abundant jute fiber as extraction raw material process, the antibacterial activity of the obtained extract, especially the activity against Escherichia coli, is significantly improved, and it also has the advantage of stable antibacterial effect when used as a bacteriostatic agent, especially a textile antibacterial finishing agent

Method used

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  • Extraction method and purpose of jute fiber extracts with bacteriostatic activity
  • Extraction method and purpose of jute fiber extracts with bacteriostatic activity
  • Extraction method and purpose of jute fiber extracts with bacteriostatic activity

Examples

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Effect test

Embodiment 1

[0022] Example 1 Jute fiber ethyl acetate reflux extraction

[0023] Take 1kg of dry jute fiber, cut into 1cm, place in 20L ethyl acetate (boiling point 77°C), reflux for extraction for 1.5h, filter with suction, then wash the filter residue and bottle wall with 5L extraction solvent for 5 times, combine the filtrate, the filtrate Ethyl acetate was recovered under reduced pressure to obtain 1.95 g of extract.

[0024] Antibacterial activity experiment proves, the extract of the present embodiment is to Escherichia coli (total bacteria number 10 4 CFU) MIC is 0.625mg / ml, against Staphylococcus aureus (total bacterial count 1 / 2×10 4 CFU) of the MIC is 9.175mg / ml; 30 ℃, the solubility of the extract in water 12mg / 100g water.

Embodiment 2

[0025] Example 2 Jute fiber n-butyl acetate reflux extraction

[0026] Take 1 kg of dried jute fiber, crush it through a 20-mesh sieve, place it in 35L n-butyl acetate (boiling point 126°C), extract it under reflux for 2 hours, filter it with suction, wash the filter residue and bottle wall with 5L extraction solvent for 5 times, combine the filtrate, The filtrate recovered n-butyl acetate under reduced pressure to obtain 1.1 g of extract.

[0027] Antibacterial activity experiment proves, the extract of the present embodiment is to Escherichia coli (total bacteria number 10 4 CFU) MIC is 3.5mg / ml, against Staphylococcus aureus (total bacterial count 1 / 2×10 4CFU) of the MIC is 11.15mg / ml; 30 ℃, the solubility of the extract in water 10mg / 100g water.

Embodiment 3

[0028] Example 3 Jute fiber n-propyl acetate reflux extraction

[0029] Take 1 kg of dried jute fiber, crush it through a 10-mesh sieve, place it in 25L n-propyl acetate (boiling point 101.6°C), reflux for extraction for 2 hours, filter with suction, then wash the filter residue and bottle wall with 5L extraction solvent for 5 times, combine the filtrate, The filtrate recovered n-propyl acetate under reduced pressure to obtain 1.3 g of extract.

[0030] Antibacterial activity experiment proves, the extract of the present embodiment is to Escherichia coli (total bacteria number 10 4 CFU) MIC is 1.15mg / ml, against Staphylococcus aureus (total bacterial count 1 / 2×10 4 CFU) of MIC is 10.2mg / ml; 30 ℃, the solubility of the extract in water is 10.5mg / 100g water.

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Abstract

The invention provides an extraction method and a purpose of jute fiber extracts with bacteriostatic activity and relates to the extraction method and the purpose of fiber extracts of jute of tiliaceae jute plants. The extraction method provided by the invention overcomes the defects of low raw material yield, low bacteriostatic activyt of extracts and easy activity loss of the existing jute extraction process. The invention provides an extraction process of ester solvents, which adopts the high-yield jute fibers as extraction raw materials, the ester solvents refers to one kind of materials or several kinds of materials from n-butyl acetate, acetic acid isopropyl ester, n-propyl acetate, iso-butyl formate, n-butyl formate, ethyl acetate and methyl acetate with the dielectric constant being 5.0 to 7.5. The extracts obtained by adopting the extraction method have the advantages that the bacteriostatic activity, particularly the escherichia coli inhibiting activity is obviously improved, and the advantage of stable bacteriostatic effect can also be realized when the extracts are used as bacteriostatic agents, particularly as bacteriostatic finishing agents for textiles.

Description

technical field [0001] The invention relates to an extraction method and application of a fiber extract of jute plant of the genus Jute of Tiliaceae, and the extract has remarkable antibacterial activity. Background technique [0002] Jute, belonging to the genus Jute of Tiliaceae, is an annual herb plant with a long history of cultivation in my country, with abundant yield and low price. Jute fiber is widely used in the textile field due to its excellent hygroscopicity and rapid water loss. [0003] In addition, the antibacterial properties of jute have also been recognized by people; at present, in the prior art, the medicinal parts of jute that can be used for extraction include roots, leaves and seeds. For example, the Chinese patent document CN102090699A discloses a process of using jute root as a medicinal part and utilizing ultrasonic-assisted ethanol extraction to obtain an antibacterial extract. Filter after, collect filtrate, the gained filtrate crosses HPD100 ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/08A01P1/00D06M13/00D06M15/00
Inventor 刘国忠张熙明蒋建新夏龙吴双庆朱旭婷张斌张健谢洪平
Owner JIANGSU REDBUD DYEING TECH CO LTD
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