137 results about "Gracilaria" patented technology

The invention discloses a making method for sweet potato dried tofu. The sweet potato dried tofu is made by the following raw materials in parts by weight: 1000-1200 parts of soybean, 10-12 parts of gracilaria lemaneiforms, 10-12 parts of brasenia schrebei, 35-40 parts of sweet potato, 10-15 parts of salviae miltiorrhizae, 10-12 parts of common scouring rush herb,10-12 parts of petasites tatewakianus kitam, 10-12 parts of radix angelicae dahuricae, 10-12 parts of water dropwort, 10-12 parts of pumpkin flower, 5-8 parts of potentilla chinensis, 20-30 parts of capsicum annuum, 5-8 parts of pitaya flower,10-12 parts of rhodiola, 10-12 parts of polygonatum odoratum, 10-12 parts of lentinula edodes, 10-12 parts of mulberry leaf, 8-10 parts of lily, 8-10 parts of lentinula edodes, 5-8 parts of perilla leaf, 3-6 parts of hericium erinaceus, 3-4 parts of amomum tsao-ko. Compared with the prior art, various edible wild herbs and medicinal and edible traditional Chinese medicine health-care ingredients are added into raw materials of the dried tofu, the sweet potato has the functions of tonifying the spleen and stomach, aiding digestion, nourishing kidney and boosting essence, and reducing glucose, bean dregs are reduced by adopting repeated grinding process, dietary fiber in the bean dredges are added into soybean milk so as to facilitate the gastrointestinal motility of a human body and help defecation; and brine contains various traditional spices, and ingredients of American ginseng and the like, thereby enhancing the human immunity and prolonging the life.

A use of an anti-inflammatory polysaccharides composition comprising fucans and galactans to inhibit the release of one or more of IL-8, PGE2 and VEGF by a cell activated during an inflammatory process and an anti-inflammatory composition comprising a ratio of brown algae fucans / red algae galactans of between about 2.5 / 1 (w / w) to about 40 / 1 (w / w), the galactans having a molecular weight higher than about 100 kDa, and the fucans having a molecular weight between about 0.1 kDa and 100 kDa.

The invention belongs to the technical field of biomedicines, and in particular relates to application of seaweed polysaccharides. The seaweed polysaccharides can be taken as preparations for preparing anti-viral or immune medicines. Cell models and in-vivo animal experiments show that the seaweed polysaccharides can be used for significantly enhancing the animal immunity, and can also be used for promoting the generation of cell factors, the typing of T lymphocytes and the proliferation of mouse spleen cells so as to ensure that cellular immune reaction can be activated. The functional seaweed polysaccharides disclosed by the invention are natural polysaccharides which are extracted from seaweeds such as large seaweeds and kelps, gulfweeds, grateloupia sparsa, eucheuma muricatum, ulva pertusa kjellm, enteromorpha, gracilaria, ascophyllum nodosum and scytosiphon lomentaria, and can also be low-molecular-weight seaweed polysaccharides or seaweed oligosaccharides which are prepared by degrading the seaweed polysaccharides by virtue of different preparation methods. According to the application disclosed by the invention, a polysaccharide extract of single seaweed or a polysaccharide extract mixture of a variety of seaweeds can be taken as a novel anti-viral and immune enhancing agent to be applied to feeds of livestock, poultry, fish, shrimps and shellfish, and has wide application prospects.

The invention discloses a dual-network three-dimensional cultivating system for abalones and algae and a cultivating method thereof. The cultivating system comprises a dual-barrel net cage platform including an inner barrel and an outer barrel, wherein a plurality of layers of cultivation baskets are suspended in an inner barrel net cage and are used for cultivating the abalones, a palm rope is downwards suspended in an area between the inner and outer barrel net cages, and gracilaria seedlings are clamped on the palm rope. The net cage can resist against natural enemy, therefore the problem that the abalones and the algae cannot be cultivated in a coexistence way in southern opening sea area; furthermore, an 'alga wall' can be formed by outer algae to effectively prevent the impact on the abalones in the inner net caused by ocean current, therefore the physical agility of the abalones consumed by resisting against the ocean current can be prevented; meanwhile, massive oxygen can be generated during the abalone growth, therefore the abalone in the inner net can be soaked in an oxygen-rich water environment, therefore the abalone can be promoted to grow quickly; in addition, the excreta of the abalones can be ensured to be absorbed by the algae for more time because the sieve number of an outer net is denser than that of the inner net, therefore the influence on the sea area environment can be prevented because the excreta flows out the net cage.

The invention relates to a method for removing heavy metal lead and cadmium in gracilaria seaweed. The method comprises the steps of flushing gracilaria clean with clear water, soaking the gracilaria in organic acid solution, performing water bath oscillation for 12 to 24 hours at the temperature ranging from 20 DEG C to 80 DEG C, fishing out, draining or washing the gracilaria to be neutral, and removing the heavy metal lead and cadmium in the gracilaria seaweed. By adopting the method, the removing effect of lead and cadmium in the gracilaria seaweed is remarkable, the removing rate of cadmium (Cd) is larger than 80%, and the removing rate of Palladium (Pd) is larger than 90%. Food acids are adopted by the method, products meet the edible hygienic standard after treatment, used organic acids can be degraded under the aerobic and anaerobic conditions, and secondary pollution is avoided. The gracilaria seaweed which does not meet the edible standard due to the fact that heavy metal lead and cadmium exceed the standard is changed to be safe to eat through organic acid treatment, and accordingly the method improves utilizing value of the gracilaria and has wide market prospect.

The invention relates to an ecological method for restoring eutrophication enclosure sea area by Gracilaria Greville macrophyte. The ecological method for restoring eutrophication enclosure sea area mainly comprises the following steps: collecting the seedlings of Gracilaria, Gracilaria seedling transportation, domestication in sea area, building a dam and enclosing sea in eutrophication sea area, cutting off the tide of the open sea and carrying out ecological restoration. After the Gracilaria which is cultivated in a large scale in the eutrophication sea area is introduced and cultivated, the Gracilaria can absorb the superfluous dissolution-typed nutrient salt with a great deal for supplying for self-growth, can restrain the explosible growth of monoplast algae meanwhile and can also absorb mud and sand; the Gracilaria can be gained again so as to transfer the nutrient matters in water body out of a pollution system, improve the water quantity and restore the ecology of the sea area; the water body after ecological restoration is exchanged with the environment again, thus achieving the purpose of relieving and eliminating eutrophication of the sea area, eliminating eutrophication can be realized gradually, meanwhile higher economic value can be produced. The method is applicable to carrying out ecological restoration for the eutrophication enclosure sea area.

The invention discloses health disease-treating, beauty-maintaining, young-keeping and long-life tea and a preparation technology thereof. The health disease-treating, beauty-maintaining, young-keeping and long-life tea is prepared from the following raw materials in parts by weight: 25-50 parts of trollflowers, 7-16 parts of Chinese peony flowers, 15-25 parts of scutellaria baicalensis, 10-20 parts of rose flowers, 20-35 parts of astragalus membranaceus, 10-30 parts of green tea cores or scented tea, 10-15 parts of globe amaranth, 8-10 parts of gomphrena globosa, 5-8 parts of acanthopanax, 8-10 parts of gracilaria, 10-15 parts of gynostemma pentaphylla, 20-30 parts of stevia rebaudian, 10-15 parts of magnolia flowers, 5-10 parts of rosemary, 20-30 parts of sanchi flowers, 20-30 parts of lily flowers, 30-40 parts of wild chrysanthemum flowers, 20-30 parts of peony flowers, 10-15 parts of lemon flowers, 10-20 parts of calendula flowers, 10-15 parts of peach blossoms, 20-30 parts of flowers carthami, 30-50 parts of chamomile flowers, 20-25 parts of lemons, 10-20 parts of potherb mustard, 20-30 parts of jasmine flowers and 30-40 parts of pueraria lobata.

The invention relates to an alga culturing method and a device. In order to quicken the growing speed of large alga seedlings and reducing the working load of culturing workers, the invention provides a large alga seedling indoor culturing method and a device, which is mainly characterized by shearing a rope-form attaching base containing the seedlings of large alga like Sargassum thunbergii or gracilaria alga of 0.2 to 0.3mm into a plurality of small pieces about 0.5 to 0.8mm and throwing the small pieces into a light transmission container which is provided with a culturing liquid with a suitable growing temperature thereof with enough illumination; the culturing liquid enters from the lower part of the container, passes through a filter screen at the upper part of the container and then flows out from a water outlet tube; air is fed into the container, divided into a plurality of small air bladders by air dispersing stones and is exhausted out of the container by an air outlet; and the shearing pieces turn over, drift and circulate in the culturing liquid under the effect of the small air bladders. After 25 days, the seedlings grow to more than 10mm, then water and air supply are stopped and the upper cover of the container is opened for taking out the grown seedlings.

The invention discloses a method for in-situ repairing of water-quality environment in aquaculture, which is characterized in that: after a week of pool clearing, putting composite microbe into the pool, culturing prawn for a month, then putting cyclina sinensis into the pool, culturing gracilaria lichenoides after half a month, and adding composite microbe every 7-15 days. The composite microbe must contain bacillus and photosynthetic bacterium, the quantitative proportion of which is 1: 2. The density of bacillus is no less than 1.5* 1010 individual / m3. The invention is characterized in that repairing the pool environment with shellfish-algae- microbe system, the organic contaminant and eutrophication inorganic nutrient salt in water decrease, and it not only solves the self-pollution problem in culturing pool, but also solves the problem that the culturing wastewater contaminates the offshore ecologic environment. The prawn growing environment is largely improved, thus the prawn survival rate and growth rate is increased.

The invention discloses a production method for preparing high-activity compound dietary fibers by extracting from Gracilaria. The production process comprises the following steps of: (1) alkali treatment: cleaning a dry Gracilaria product by using tap water and then soaking the dry Gracilaria product by using alkali liquor at high temperature; (2) bleaching: bleaching by using sodium hypochlorite; (3) acidification: acidifying the frond by using hydrochloric acid after the frond is bleached; (4) colloid extraction: placing the frond in an extraction kettle after acidifying and adding distilled water for extracting colloid; then filtering by using nylon cloth to obtain filter liquor and filter residues and cooling the filter liquor to obtain the colloid; freezing, dewatering, drying and pulverizing the colloid into powdered soluble dietary fibers; (5) activation: activating the filter residues by using cellulase and then dewatering, drying and pulverizing the activated filter residues into powdered insoluble dietary fibers; and (6) mixing: mixing the soluble dietary fibers and the insoluble dietary fibers by a certain proportion to obtain the Gracilaria high-activity compound dietary fibers. In the invention, both the soluble dietary fibers and the insoluble dietary fibers of the Gracilaria are utilized, thereby solving the recycling problem of the Gracilaria filter residues and improving the utilizing value of the Gracilaria.

The invention relates to a method for efficiently purifying heavy metals in bodies of cultured oysters. The method comprises the steps of utilizing fresh macroalgae such as gracilaria lemaneiformis, gracilaria and ulva to be combined with chitosan and the oysters for carrying out mixed cultivation for 7-14 days, wherein the ratio of the algae to seawater is equal to (1-5)kg to 1m<3>, the ratio of the oysters to the seawater is equal to (10-20)kg to 1m<3>, and the concentration of the chitosan is 1-10mg / L; feeding the oysters with a right amount of platymonas subcordiformis, periodically replacing the seawater and supplementing the chitosan, carrying out continuous air inflation, and the like; the method can efficiently purify heavy metal ions in the bodies of the oysters; the heavy metal content of the purified oysters is significantly lower than the safety limit of first class or second class GB18421-2001 of the standard of China; the Cu<2+> purification efficiency and the Pb<2+> purification efficiency of the method are respectively 87.63-93.73% and 78.21-96.11%. The method is high in efficiency, short in period, high in practicality, environment-friendly and safe; a new method is provided for the purification of the heavy metal ions in the bodies of the oysters, and a new idea is provided for the purification of heavy metal ions in the bodies of marine shells.

The invention relates to a soilless Nereid larva breeding method. According to the method, with 27-29 DEG C of water temperature, 7.8-8.6 of pH and 28-30 of salinity, larva breeding water undergoes dark precipitation and secondary sand filtration and is then filtered for further use by a 300-mesh bolting-silk bag; large and vigorous heteronereis bodies with no exterior wounds are selected and positioned in a plastic bucket containing 0.5 m3 of sea water for oviposition and insemination according to a proportion of 3:1 between the female and the male heteronereis bodies; oosperms undergo three times of egg washing and then are moved into a larva breeding pond; larva in a roaming period are mainly fed with chlamydomonas together with a certain amount of artificially mixed feed; when the larva grow into five-setiger nectochaeta larva, gracilaria is put in the pond as an attachment substrate, and a small amount of fish paste is also fed; and during the Nereid larva breeding, according to larva growing periods, the light illumination is controlled in a range of 300-1000 Lux. When the gracilaria is used for replacing silt as the Nereid perching place, as the gracilaria can utilize the metabolic products of the Nereids as the nutrients to promote self growth and is easily cleaned, the living environment of the larva can be bettered, the diseases and the damage to the larva during larva generation can be reduced, and the survival rate of the larva can be improved.

The invention discloses functional food with the hypoglycemic effect and a preparation method thereof. The functional food with the hypoglycemic effect comprises gracilaria agar-agar, sodium alginate, an astragalus extract, a kudzuvine root extract and a mulberry leaf extract according to a certain proportion. The preparation method comprises the following steps: preparing the astragalus extract, the kudzuvine root extract and the mulberry leaf extract; uniformly mixing the gracilaria agar-agar, the sodium alginate, the astragalus extract, the kudzuvine root extract and the mulberry leaf extract in a certain ratio, sealing with capsules, and tabletting by a wet method or making into granules. The functional food disclosed by the invention is reasonable in formula, high in safety and capable of reducing blood glucose level, is used for the adjuvant therapy of diabetic patients and has the effect of improving diabetic complications.

A crossbreed method for different geographical species parti-colour abalone, which relates to a genetic improved method for parti-colour abalone, especially relates to a crossbreed method using different geographical species parti-colour abalone which comprises, putting the abalone in 16-18Deg C. sea water and elevating temperature to make the parent abalone accelerate. The bait comprises gracilaria 100, Ulva lactuca 30-60, pinnatifida 20-50, spirulina 1-15. Injecting 5-hydroxytryptamine to the head or abdominal feet of the parti-colour abalone, and making the lay eggs and discharge spermium synchronous with a different geographical parti-colour abalone. Making artificial insemination and getting filial generation. and guaranteeing the survival rate during the line haul, making a two species parent parti-colour abalones mature in a same time by using reasonable bait breeding; Using ejecting 5-hydroxytryptamine to make the gamete discharge in a same time and overcome the physiological difference of gamete discharging and sexual maturity because of geographic isolation of different geographical species, and making the gonadal mature and gamete discharge at the same time.

The invention discloses a gracilaria algae facial mask and a preparation method thereof, and the facial mask comprises 5-10% of humectants, 1-5% of thickeners, 3-7% of preservatives, 1%-3% of dehydrated sorbitol monolaurate, 0.1-0.5% of essence, 10-20% of gracilaria algae extracts, 0.5%-1.0% of hyaluronic acid, 0.5%-1.0% of jojoba oil, 1-5% of vitamins, 20-40% of surfactants, and deionized water. Gracilaria are washed to clean, dried in the air, pulverized, and soaked with deionized water; grinding and reduced-pressure drying are performed to obtain gracilaria algae extract particles; the humectant, the thickener, the preservative, the hyaluronic acid, the jojoba oil, the vitamin, and the essence are added into deionized water; the mixture is grinded with colloid to prepare a colloidal solution; then the algae particles and the colloidal solution are fully stirred and mixed; dehydrated sorbitol monolaurate is added and stirred to obtain the gracilaria algae facial mask. The facial mask is emulsoid, can be used for moisture retention and aging resistance, is convenient for using, can form a protective membrane on a skin surface to prevent moisture evaporation, has the good effects of moisture retention, skin improvement, and skin aging prevention.

The invention relates to a green extraction method of agaragar. Gracilaria red algae as a material is alkalified by 0.5 to 9 percent of sodium hydrate, half-bleached by 0.02 to 0.5 percent of oxalic acid and bleached after staying in the light with light intensity of five thousand to one hundred and fifty thousand lux for two to seventy two hours, and the high-quality agaragar is produced after filtration and condensation. The invention applies a light energy bleaching technique to extract the agaragar from the red algea, and compared with the traditional hypochlorite bleaching technique, the invention reduces the discharge of wastewater containing chlorine and health hazard on operators in the bleaching process; the application of the light energy bleaching technique can reduce cost and the concentration of alkaline in the reaction; the quality of the produced agaragar can meet the requirements of international standards, and the strength of the produced agaragar is higher than the agaragar produced by the traditional technique.

The invention relates to a seedling-raising way for algae, in particular to a seedling-raising method for gracilaria algae. The method comprises the following steps: disinfecting cleaned mature gracilaria algae with sodium hypochlorite for 3-5 minutes, flushing the disinfected gracilaria algae with boiled fresh water, and putting the flushed gracilaria algae into boiled seawater for serving as breeding algae in later use; drying the breeding algae in the shade, stimulating, releasing spores, growing a disk-shaped body, performing suspension cultivation after scraping the disk-shaped body, performing enlarged cultivation, inducing the formation of vertical branches, and performing gradual cultivation to prompt growth of seedlings. By adopting the seedling-raising method, the entire spore seedling-raising process is implemented in a relatively small and controllable three-dimensional space, the seedling-raising amount is large, the survival rate is up to 90-100 percent, seedlings grow rapidly, the emergence rate is high, and gracilaria seedlings which are uniform in size and are 5 centimeters in length can be cultivated within 30-60 days.

The invention discloses an industrialization polyculture method of Babylonia areolata, holothuria leucospilota and gracilaria. The method comprises the following steps of (1) aquaculture water and bed-load activation before aquaculture, (2) stocking and feeding of fries and fingerling of the Babylonia areolata, and (3) environmental control. The method is an ecological breeding method, under the condition of land-based factory breeding, Babylonia areolata breeding is regarded as principle, the holothuria leucospilota is subjected to polyculture to improve the base material, the seaweed (gracilaria) is subjected to polyculture to improve the water quality, and thus the morbidity of the Babylonia areolata is lowered.

The invention relates to a method for restoring a degenerated algae field by using gracilaria macro-algae namely gracilaria salicornia, and belongs to the technical field of marine ecological environment restoration. According to the method, a natural gracilaria salicornia algae field with high-quality growth vigor is selected in the period when gracilaria salicornia are mature and release generative cells, a mesh with a specification of 5*20m<2> is laid at the bottom of the algae field to provide an appropriate adhering substrate for spores, and after collection of the spores and when the spores grow naturally to have discoidal bodies or in the stage of formation of erect branches, and the mesh with gracilaria salicornia seedlings is transplanted to an algae restoration area to ensure that gracilaria salicornia populations can be enlarged in a partially degenerated algae field or stable gracilaria salicornia populations can be reestablished in a completely degenerated algae field, thereby achieving ecological restoration of a gracilaria algae field. By adoption of the method, a germplasm source is provided for a restored area, and a degenerated algae field can be effectively restored.

The invention relates to a soilless Nereid breeding method. A cement pond is used as a Nereid breeding pond. Sea water undergoes dark precipitation and secondary sand filtration and is then filtered for further use by a 300-mesh bolting-silk bag. Gracilaria is selected as a Nereid perching environment. The breeding pond and the gracilaria are sterilized. The gracilaria is paved at the bottom of the pond. The filtered sea water is added. Yong Nereids with 2-3-meter bodies are put in the pond according to a density of 1500-2000 Nereids per square meter. During the Nereid breeding, chlamydomonas, artificially mixed feed and fish paste are used for feeding the Nereids. Water in the pond is changed each day. The breeding pond is cleaned regularly. The light illumination is controlled in a range of 400-1000 Lux. Meanwhile, as the Nereid grow, the number of the Nereids is added. After 8-10 months of breeding, the Nereid yield rate can reach 5-7 kg / m2, which is 40 percent higher than the traditional breeding methods. The method adopts the gracilaria in place of silt as the Nereid perching place, thereby facilitating the cleaning, reducing a great amount of man power, fully improving the breeding environment, decreasing the possibility of diseases and being good for the growth of the Nereids and the breeding density increase. Meanwhile, the gracilaria can also be sold as commodity.

The invention discloses a pond ecological breeding method for large yellow croaker, which comprises a breeding pond with sand or sandy mud at the bottom. 1.0-2.0 kilograms of perinereis albuhitensis grube is stocked on the pond bottom of each mu of pond; chrysanthemum gracilaria is externally hung on a breeding net cage; space between two adjacent net cages in the pond is 1-2 m; 1.0-2.0 kilograms of chrysanthemum gracilaria is hung on each square meter of water level; before stocking, the fries are soaked in fresh water for 5-10 minutes; and 600-800 fries are stocked in each cubic meter of water in the breeding net cage. The method disclosed by the invention can improve the breeding environment of the large yellow croaker relatively well and reduce diseases; and moreover, the germplasm of the large yellow croaker is maintained relatively well, the breeding survival rate is relatively high, and the breeding benefits are relatively high. Therefore, the ecological breeding method for large yellow croaker disclosed by the invention ensures relatively low nitrogen and phosphorus load in the breeding environment, prevents high temperature, realizes relatively good breeding environment and gains relatively high breeding benefits.

The invention belongs to the field of preparation of a health care beverage, and concretely relates to an anti-aging alga health-care alga granule beverage and a preparation method thereof. An alga nutrient solution is the main material of the beverage, and comprises the following components in parts by dry weight: 4-5 parts of Dictyophora indusiata, 4-5 parts of Agrocybe aegirit, 8-10 parts of Eucheuma muricatum, 6-8 parts of laver, 3-5 parts of Gracilaria, 2-4 parts of Antarctic ice microalgae, 2-4 parts of Grateloupia filicina, 1-2 parts of Hizikia fusiformis, 1-2 parts of sea mustards, and 0.5-1 parts of chlorella. A whole set of continuous way production process is applied, and comprises the following steps: aqueous extraction method, aerobic fermentation, anaerobic fermentation, removal of impurities, etc.; an extract product with biological activity in the algae can be produced into the anti-aging beverage. The whole production line has the advantages of high yield and zero discharge, and compared with a prior single extraction method, the yield is multiple times higher. The production process can maximize utilization value of algae, the process is simple, and the energy consumption is low; zero discharge industrial production without pollution is effectively realized.

The invention discloses an agar compound colloid being dissoluble at low temperature and high in gelling strength and a preparation method thereof, and belongs to the technical field of food processing. The agar compound colloid is obtained through the steps that compound agar and auxiliary materials are extruded by a twin-screw extruder, dried and crushed, wherein the compound agar comprises Indonesia agar and gracilaria asparagus agar, the mass ratio of the Indonesia agar to the gracilaria asparagus agar is 1:2, and one or more of corn starch, microcrystalline cellulose, beta-cyclodextrin and carrageenan are adopted as the auxiliary materials. Meanwhile, the invention provides the preparation method of the agar compound colloid. The agar compound colloid has the advantages of being low in dissolving temperature and high in gelling strength; the agar compound colloid can be dissolved at 50 DEG C, and the gelling strength of the dissolved agar at 50 DEG C can reach 625 g.

An instant Gracilaria seaweeds food is prepared through immersing raw Gracilaria seaweeds in alkali solution for 24-26 hr while stirring, washing, immersing in the solution of acetic acid for 25-30 min, washing, boiling for 1-2 min, dripdrying, and cooling in aseptic water, then packaging it in cleaning room.

The present invention relates to a cosmetic and / or pharmaceutical active component for stimulating proteasome activity of skin cells comprising the broth obtained by inoculating a biomass of the algae, Gracilaria spp., particularly the algae, Gracilaria tikvahiae, with a yeast culture, and allowing fermentation of the biomass to produce a fermentation broth. Also described is a cosmetic and / or pharmaceutical active component for stimulating proteasome activity of skin cells comprising an extract of the algae, Gracilaria tikvahiae. The present invention also relates to topical compositions comprising as a a cosmetic and / or pharmaceutical active component a ferment of the algae, Gracilaria spp., particularly the algae, Gracilaria tikvahiae, or an extract of the algae, Gracilaria tikvahiae, or a combination of both.

The invention discloses seaweed meal with an adhesive effect for an aquatic feed. The seaweed meal comprises the following raw materials in parts by weight: 5-15 parts of enteromorpha, 0-15 parts of ulva, 25-45 parts of kelp, 15-30 parts of undaria pinnatifida, 5-15 parts of gulfweed, 5-20 parts of laver, and 15-20 parts of gracilaria. A preparation method of the seaweed meal comprises the following steps of mixing seaweed in proportion; performing grinding and enzymolysis to obtain processed seaweed; adding the processed seaweed in a carrier; mixing the processed seaweed with the carrier to obtain a mixture; drying the mixture; and crushing the dried mixture. The seaweed meal is prepared from natural algae, so that the seaweed meal is high in adhesive effect, the stability of bait in water can be enhanced, and the powder yielding rate during processing can be reduced; compared with terrestrial plants, the seaweed meal contains mineral elements of iodine, calcium, phosphorus and the like, and contains various vitamins, algal polysaccharides, mannitol and the like, and after enzymolysis, the seaweed meal is easy to absorb and utilize by animals, so that the feed efficiency can be effectively improved, the growth and the development of animals can be promoted, and the disease resisting ability of animal bodies is increased; and the seaweed meal contains unique fishy smell substances and pigment of the seaweed, so that the food-calling properties of the feed can be increased, the body color of cultured fish can be close to natural body color, and the economic benefits of cultivation products are increased.

The invention discloses a preparation method for extracting gracilaria agar by replacing an alkaline process with an enzymatic method. The preparation method for extracting the gracilaria agar by replacing the alkaline process with the enzymatic method comprises the following steps: firstly, carrying out enzyme treatment, namely smashing gracilaria, adding water, soaking, adjusting the temperature to be 45-50 DEG C, then adding neutral cellulase, then adding neutral protease, and finally adding lipase; secondly, boiling glue and decolorizing, namely adding water and boiling glue, boiling at ordinary pressure until gracilaria is completely melted, adding macroporous adsorption resin and EDTA, adsorbing for 3-4 hours, and filtering; thirdly, carrying out enzyme treatment, namely cooling to-be-filtered glue solution to 45-50 DEG C, and adding sulfatase for removing sulfuric acid groups of agar, wherein the enzyme treatment is carried out for 3.5-5 hours; and fourthly, obtaining the finished product, namely after the enzyme treatment is finished, quickly cooling, pushing into strips, subpackaging, carrying out oil pressure dehydration, drying, smashing, and collecting screened powder. The preparation method disclosed by the invention adopts a biological whole enzymatic method for replacing application of acid, alkaline and a bleaching agent in an agar extracting process, has the characteristics of environmental friendliness and no pollution and has important significance on sustainable development of an agar production enterprise.

The invention provides applications of an agar oligosaccharide in cosmetics. The agar oligosaccharide has the structural molecular formula disclosed in the specification. The invention particularly provides applications of a degradation product of agar extracted from artificial red algae, such as purple laver, agar weed, Gracilaria or the like, in manufacturing cosmetic additives. The agar oligosaccharide can be used for preserving and absorbing moisture of the skin, and whitening the skin, and also can be used as a moisturizing agent, a moisture absorption agent or a whitening agent in cosmetics.

The invention relates to a method for efficiently preparing gracilaria sulfated polysaccharides. The method takes fresh gracilaria as a raw material and comprises the following steps of: washing, cutting, pre-drying, breaking walls through superheated steam, carrying out ultra-low-temperature ultra-micro crushing, extracting with water, decompressing and filtering, carrying out alcohol precipitation, washing with water, freezing and drying, and crushing to prepare the gracilaria sulfated polysaccharides. The method provided by the invention has the advantages that cell walls are crushed sufficiently, extraction conditions are moderate, and concentration and drying temperatures are relatively low, so that the yield of the prepared gracilaria sulfated polysaccharides is high, the content of sulfate groups is relatively high and the color and luster are good. The method has an advanced and reasonable technology and is easy to popularize; and the predicated economic and social benefits are good.