Storage method of insect specimens
A technology for insects and specimens, applied in the field of specimens, to achieve high moisture absorption rate, improve compressive strength, and strong practicability
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Embodiment 1
[0034] 1) Weigh 0.60g of chitosan in 60mL of 1% acetic acid solution by volume fraction, and ultrasonically disperse at room temperature for 30min to obtain a clear solution of chitosan-acetic acid, which is designated as solution A.
[0035] 2) Adjust the pH value of solution A obtained in step 1) to 2, add 20ml of tea polyphenol solution with a mass fraction of 10%, and obtain chitosan-tea polyphenol mixed colloid, which is denoted as colloid B. Chitosan forms a gel state after being dissolved in water, and has strong adsorption properties. Using this property, it can effectively absorb a large number of tea polyphenol molecules, forming an antibacterial and moisture-absorbing fresh-keeping structure.
[0036] 3) Weigh 2.00g of sodium carboxymethyl cellulose in 100mL of deionized water, ultrasonically disperse at room temperature for 30 minutes, add dropwise to the colloid B obtained in step 2) while stirring, and mix well to obtain mixed colloid C. Sodium cellulose has good...
Embodiment 2
[0043] 1) Weigh 0.80g of chitosan in 60mL of acetic acid solution with a volume fraction of 1.5%, and ultrasonically disperse at room temperature for 30min to obtain a clear solution of chitosan-acetic acid, which is designated as solution A.
[0044] 2) Adjust the pH value of solution A obtained in step 1) to 4, add 25ml of tea polyphenol solution with a mass fraction of 15%, and obtain a chitosan-tea polyphenol mixed colloid, which is denoted as colloid B. Chitosan forms a gel state after being dissolved in water, and has strong adsorption properties. Using this property, it can effectively absorb a large number of tea polyphenol molecules, forming an antibacterial and moisture-absorbing fresh-keeping structure.
[0045] 3) Weigh 2.50g sodium carboxymethyl cellulose into 100mL deionized water, ultrasonically disperse at room temperature for 30min, add dropwise to colloid B obtained in step 2) while stirring, and mix well to obtain mixed colloid C, due to carboxymethyl Sodium...
Embodiment 3
[0052] 1) Weigh 1.00 g of chitosan in 60 mL of acetic acid solution with a volume fraction of 2%, and ultrasonically disperse at room temperature for 30 min to obtain a clear solution of chitosan-acetic acid, which is designated as solution A.
[0053] 2) Adjust the pH value of solution A obtained in step 1) to 7, add 30ml of tea polyphenol solution with a mass fraction of 20%, and obtain chitosan-tea polyphenol mixed colloid, which is denoted as colloid B. Chitosan forms a gel state after being dissolved in water, and has strong adsorption properties. Using this property, it can effectively absorb a large number of tea polyphenol molecules, forming an antibacterial and moisture-absorbing fresh-keeping structure.
[0054] 3) Weigh 3.00g sodium carboxymethyl cellulose into 100mL deionized water, ultrasonically disperse at room temperature for 30min, add dropwise to colloid B obtained in step 2) while stirring, and mix well to obtain mixed colloid C, due to carboxymethyl Sodium ...
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