Preparation method of marine microorganism antifouling coating
A technology of marine microorganisms and antifouling coatings, applied in biochemical equipment and methods, antifouling/underwater coatings, microorganisms, etc., can solve problems such as genetic variation of marine organisms, death of seaweed and other organisms, and destruction of ecological balance, and achieve production Low cost, good anti-fouling effect, no environmental pollution effect
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[0011] Example 1: Preparation of antifouling microorganisms
[0012] Pick a loop of the preserved antifouling microbial strain with an inoculation needle, and inoculate it into the seed medium (3g beef extract, 10g peptone, 5g sodium chloride, 1L sea water, pH 7.0-7.2). After 24 hours of incubation, press Inoculate 5% of the inoculation rate into a 250ml Erlenmeyer flask containing 100ml fermentation medium, culture at 150 rpm at 20°C for 48 hours; coarsely filter the fermentation broth with gauze; filter the mother liquor by centrifugation at 8000 rpm / min for 30 minutes, and the sediment is antifouling microorganism.
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[0013] Example 2: Preparation of antifouling protease
[0014] The anti-fouling microbial fermentation broth prepared in Example 1 was centrifuged at 6000 rpm for 15 minutes, and the supernatant was taken out with ammonium sulfate with a saturation of 60% for salting out. After standing overnight, 8000 rpm / min for 30 minutes After centrifugation, the precipitate was collected, and then chromatographed with a Sephadex G-75 chromatography column. After collecting the same components, it was freeze-dried. The sample was subjected to SDS-polyacrylamide gel electrophoresis, and the molecular weight of the antifouling protease was approximately 65Kd.
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[0015] Example 3: Preparation of microbial antifouling paint
[0016] Weigh 3.5 g of antifouling microorganisms in Example 1, add 15 g of rosin to 80 g of chlorinated rubber in xylene (40 / 100, W / W) solution and add 1.2 g of bentonite, and stir with an electric mixer for 10 minutes. Add 3.5g of filtered and centrifuged sediment (target active microorganism) and stir evenly to obtain microbial antifouling paint; apply the above-prepared paint on A3 steel, and hang the board in the sea for 40 days after the coating is completely dry , No sea creatures were seen on the surface of the hanging board.
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