6 results about "Golden algae" patented technology

The invention discloses a method for producing chrysophyceae laminarin through high-density culture of chrysophyceae and an application of the chrysophyceae laminarin. The culture method comprises the following steps: (1) culturing a chrysophyceae species under low-temperature and low-light conditions, and then transferring the chrysophyceae species into a seed culture medium for culturing to obtain activated chrysophyceae species; (2) placing the activated algae species obtained in the step (1) under a dark condition for shake culture to obtain dark adaptation algae species; and (3) inoculating the dark adaptation algae seeds into a fermentation tank, and adding a basic culture medium and a fed-batch culture medium for fermentation culture. By selecting the nitrogen source and accurately controlling the ammonium concentration, the double improvement of the biomass and the yield of the chrysophyceae laminarin is realized, the adverse effect of the high-concentration nitrogen source on growth is avoided, and the culture efficiency and the product economy are improved.

The invention discloses a culture method for increasing the survival rate of young oysters, which comprises the following steps of: feeding 50 percent of chlorella, 20 percent of chrysophyceae, 15 percent of chaetoceros and 15 percent of platymonas in the early culture stage of the young oysters; the method comprises the following steps: feeding 30% of chlorella, 20% of chrysophyceae, 20% of chaetoceros and 30% of Platymonas subcordiformis at the later culture stage of the oyster seeds, managing the salinity, temperature and dissolved oxygen of an oyster seed culture water body, the culture density of the oyster seeds and the variety and matching proportion of biological baits, and improving the survival rate of the oyster seeds on the basis of original culture. The culture cost is reduced.

The present application relates to a kind of bait feeding mode suitable for northern oyster larva breeding work, at the D type larva period of northern oyster, feed mixed bait of chrysomonad and chlorella.The present application significantly improves the growth rate and survival rate of long oyster larvae by feeding mixed bait of chrysomonad and chlorella, and shortens the breeding cycle.

The present application relates to the field of aquaculture breeding technology, and discloses an indoor cement pool artificial breeding method for east wind snail, which comprises the following steps: storing east wind snail egg sacs after disinfecting water body by ultraviolet rays, removing infected egg sacs, and performing specific water flow replacement 24 hours before hatching; feeding the larvae with a nutrient agent containing clostridium aceticum protein and agaricus blazei polysaccharide every day after hatching, feeding the larvae with monosomic algae such as chrysomonad, tetraselmis, chlorella, etc. in the early stage, and feeding the larvae with shelled algae in the middle stage until the larvae are attached and metamorphosed; keeping the breeding pool continuously aerated and controlling parameters such as dissolved oxygen, salinity, temperature and pH value of the water body during the breeding period, and finally collecting the snail seedlings to end the breeding. The indoor cement pool artificial breeding method for east wind snail provided by the present application is suitable for one or more of fasciolaria fasciolaris and mud east wind snail, and can effectively improve the success rate and seedling quality of indoor cement pool breeding of east wind snail.

The invention provides a strain of the genus laburensis. The provided laburensis can be used for remarkably improving the high-temperature resistance of isochrysis zhanjiangensis. The preservation number of the labrentz's bacteria is CCTCC (China Center for Type Culture Collection) NO: M2025963. The strain of the Labarenaria sp. Obtained by screening can effectively promote the growth of the isochrysis zhanjiangensis under high temperature stress, so that the biomass of the isochrysis zhanjiangensis is improved. Sufficient bait guarantee is provided for the shellfish planktonic larvae in the high-temperature season.

The invention provides a system for treating mariculture tail water through coupling of an algal-bacterial symbiotic system and a ceramic membrane, the system comprises a water inlet mechanism, a flow stabilizing mechanism, an MBGMBR component membrane pool and an aeration mechanism, an MBR membrane component is arranged in the MBGMBR component membrane pool, the aeration mechanism comprises a perforated aeration strip and an aeration pump, the perforated aeration strip is arranged at the bottom of the MBGMBR component membrane pool, and the aeration pump is arranged at the bottom of the MBGMBR component membrane pool. The aeration intensity of the aeration mechanism is 0.1 m < 3 > / m < 2 >. H-0. 5 m < 3 > / m < 2 >. H, bacteria and algae are arranged in the MBGMBR assembly membrane pool, the mass concentration ratio of the bacteria to the algae is (3-5): (1-2), the bacteria are activated sludge, and the algae are chrysophyta algae species, nitrogen, phosphorus and organic matters in the mariculture tail water are removed by utilizing different bacteria-algae proportions, so that the membrane pollution is effectively relieved, and the membrane pollution is reduced. Membrane blockage is prevented, and the service life of the membrane is prolonged.