Method for inducing coralline planula larvae to improve adhesion capability
A technology for floating larvae and attachment ability, which is applied in the field of inducing coral floating larvae to improve the adhesion ability, which can solve problems such as the structural formula is not completely determined, and achieve the effect of improving the level of ecological conservation and promoting attachment and development
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[0052] The preparation method comprises the following steps:
[0053] S1) Weigh bromopyrrole alkaloid (-)-Agelastatin A and polycaprolactone (PCL) and dissolve them in an organic solvent, then fully ultrasonically oscillate and mix to obtain an oil phase; wherein, bromopyrrole alkaloid (-)-Agelastatin The mass ratio of A to polycaprolactone is 40-50:280-320, preferably 43-48:290-310, preferably 44-46:295-305, more preferably 45:300; the organic solvent is preferably is dichloromethane;
[0054] S2) Take the above oil phase and slowly add it dropwise into the polyvinyl alcohol aqueous solution, stir at a high speed, and emulsify in a sealed environment. Preferably, the emulsification speed is 250-350r.min -1 , after closed emulsification for 50-70min, reduce the speed to 80-120r.min -1 ;
[0055] S3) continuously stirring to volatilize the organic solvent dichloromethane to solidify the microspheres to obtain an emulsion;
[0056] S4) The emulsion is separated by centrifuga...
Embodiment 1
[0064] The preparation method of bromopyrrole alkaloid polycaprolactone microspheres described in this embodiment comprises the following steps:
[0065] 1) Accurately weigh 45 mg of bromopyrrole alkaloid (-)-Agelastatin A technical material and 300 mg of polycaprolactone (PCL) in 12 mL of dichloromethane, then fully ultrasonically oscillate and mix to obtain the oil phase;
[0066] 2) Use a syringe to absorb the oil phase and slowly drop it into 100mL of polyvinyl alcohol aqueous solution (2% mass fraction), stir at high speed, and the emulsification speed is 300r.min -1 ;
[0067] 3) After closed emulsification for 60 minutes, reduce the speed to 100r.min -1 ; Stir continuously for 3h to volatilize dichloromethane to solidify the microspheres;
[0068] 4) The emulsion is centrifuged at 1000r.min-1, and the obtained solid is washed with distilled water, and again at 1000r.min -1 Centrifuged, repeatedly washed and centrifuged 3 times; placed in a low-temperature freeze-vacu...
Embodiment 2
[0072] Adding the bromopyrrole alkaloid (-)-Agelastatin A to the live coralline algae as the culture substrate
[0073] Effects on the attachment ability of coral plankton larvae.
[0074] 1.1 Collection and cultivation of coral larvae
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