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Mildewproof sterilized method for ancient books

An anti-mildew, ancient book technology, applied in separation methods, chemical instruments and methods, chemistry, etc., to achieve a large diffusion coefficient, facilitate storage, and save processing time

Active Publication Date: 2013-02-27
GUANGDONG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Supercritical fluid extraction technology has been widely used in the deacidification of natural oils, but there is no application in anti-mold and sterilization in ancient books

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take the 62-year-old newspaper, take the strains on it by wiping, and then culture it with a petri dish. It is observed that there are 60 colonies after culture. Then load 2L supercritical CO 2 In the extraction tank, adjust the supercritical extraction conditions so that the pressure of the extraction tank is 8MPa, the extraction temperature is 40°C, and then inject the entrainer DP300-ethanol solution from the auxiliary pump, in which 0.05g of DP300, 1L of ethanol, and the extraction time is 1 hour , CO 2 The fluid flow rate is 0.010t / h. After the extraction, the samples were cultured by swabbing again, and there was 1 colony after culture.

Embodiment 2

[0022] Take the 63-year-old newspaper, take the strains on it by wiping, and then culture it with a petri dish. It is observed that there are 70 colonies after culture. Then load 2L supercritical CO 2 In the extraction tank, adjust the supercritical extraction conditions so that the pressure of the extraction tank is 40 MPa, and the extraction temperature is 55 ° C, and then the entrainer 3-(trimethoxysilyl) propyl hexadecyl / octadecyl di Methylammonium chloride-methanol and ethanol solution, including 0.15g of 3-(trimethoxysilyl)propyl hexadecyl / octadecyldimethylammonium chloride, 800ml of methanol, 500ml of ethanol, and the extraction time is 2.5 hours , CO 2 The fluid flow rate is 0.020t / h. After the extraction, the samples were cultured by swabbing again, and there were 0 colonies after culture.

Embodiment 3

[0024] The newspapers in the 12th year of the Republic of China were taken, and the strains on them were taken by wiping method, and then cultured in a petri dish. It was observed that there were 103 colonies after culture. Then load 2L supercritical CO 2 In the extraction kettle, adjust the supercritical extraction conditions so that the pressure of the extraction kettle is 39MPa, the extraction temperature is 53°C, and then the entrainer cinnamaldehyde-ethanol solution is injected from the auxiliary pump, wherein cinnamaldehyde 0.04g, ethanol 750ml, and the extraction time is 5 hours, CO 2 The fluid flow rate is 0.500t / h. After the extraction, the samples were cultured by swabbing again, and there was 1 colony after culture.

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Abstract

The invention discloses a supercritical mildewproof sterilization method for ancient books. The ancient books are placed in a supercritical CO2 extraction device for extraction purification treatment with the controlled extraction pressure of 7mPa to 40MPa and the controlled extraction temperature of 32 DEG C to 55 DEG C; and then, adding a mildewproof bactericidal agent and an entrainer for mildewproof sterilization treatment so as to achieve the favourable mildewproof sterilization effect.

Description

technical field [0001] The invention relates to a method for anti-mildew and sterilization of ancient books using supercritical fluid technology. Background technique [0002] "Ancient books" is the abbreviation of ancient Chinese books, mainly referring to books written or printed before 1912 in the form of Chinese classical binding. Ancient books are an important historical and cultural heritage of our country. They are not only the spiritual product of human civilization, but also the main carrier and representation of human material civilization and culture. They are closely related to the development process of human culture and productivity in various historical periods. The splendid civilization history of thousands of years has left us a rich historical and cultural heritage. According to statistics, the ancient books and documents collected by various libraries in our country have reached 30 million volumes. However, due to the long history and suffering from wars...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L2/16B01D11/00
Inventor 方岩雄陶建强谭伟胡明雪张焜
Owner GUANGDONG UNIV OF TECH
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