Method for extracting antibacterial substance, water soluble polysaccharide and chitin from blaps
A technology of water-soluble polysaccharides and antibacterial substances, applied in the directions of antibacterial drugs, drug combinations, allergic diseases, etc., can solve the problem of comprehensive utilization of pipa, which can increase the added value of products, facilitate operation, and reduce product costs. Effect
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Embodiment 1
[0028] A, after the market-bought Pipa nail is dried with a conventional dryer, it is crushed to a 40-mesh sieve, and according to the mass / volume ratio of Pipa nail powder: degreasing solvent=1: 2, add 20L in 10kg Pipa nail powder Petroleum ether, stir and mix well, stand at room temperature for degreasing for 26 hours, filter and separate the filtrate and degreasing filter residue, concentrate the filtrate at a temperature of 25°C and a vacuum of 0.1MP to recover petroleum ether, and obtain a petroleum ether extract. It was 4.53%; the degreased filter residue was dried naturally at room temperature;
[0029] B, in the degreasing filter residue of above-mentioned A step, press degreasing filter residue: the mass / volume ratio of solvent=1: 2, add 20L ethyl acetate in 10kg filter residue, stir and mix, filter after soaking 24 hours at room temperature to obtain filtrate and For the filter residue, add ethyl acetate with the same mass / volume ratio to the filter residue, stir and...
Embodiment 2
[0035] A, after the market-bought Pipa nail is dried with a conventional dryer, it is crushed to a 40-mesh sieve, and according to the mass / volume ratio of Pipa nail powder: degreasing solvent=1: 6, add 60L in 10kg Pipa nail powder n-hexane, stir and mix well, stand at room temperature for degreasing for 18 hours, filter and separate the filtrate and degreasing filter residue, and concentrate the filtrate at a temperature of 40°C and a vacuum of 0.1MP to recover n-hexane to obtain n-hexane extract, yield It was 4.98%; the degreasing filter residue was dried naturally at room temperature;
[0036] B, in the degreasing filter residue of above-mentioned A step, press degreasing filter residue: the mass / volume ratio of solvent=1: 6, add 60L methyl acetate in 10kg filter residue, stir and mix, filter after soaking 12 hours at room temperature to obtain filtrate and For the filter residue, add methyl acetate with the same mass / volume ratio to the filter residue, stir and mix, soak a...
Embodiment 3
[0042] A, after the market-bought Pipa nail is dried with a conventional dryer, it is crushed to a 40-mesh sieve, and according to the mass / volume ratio of Pipa nail powder: degreasing solvent=1: 4, add 40L in 10kg Pipa nail powder No. 6 solvent oil, stir and mix well, stand at room temperature for degreasing for 22 hours, filter and separate the filtrate and degreasing filter residue, concentrate the filtrate at a temperature of 30°C and a vacuum of 0.1MP to recover No. 6 solvent oil to obtain No. 6 solvent Oil extract, the yield was 4.84%; the degreased filter residue was dried naturally at room temperature;
[0043] B. In the degreasing filter residue of the above-mentioned A step, press the mass / volume ratio of degreasing filter residue:solvent=1:4, add 40L isopropyl acetate in 10kg filter residue, stir and mix, and filter after soaking at room temperature for 18 hours to obtain the filtrate and filter residue, add isopropyl acetate of the same mass / volume ratio to the fil...
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