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
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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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