13 results about "Potamogeton crispus" patented technology

The invention relates to the technical field of fresh-keeping packaging of brasenia schreberi tender shoots, in particular to a fresh-keeping packaging method and system for brasenia schreberi tender shoots. The method comprises the following steps: pretreating brasenia schreberi tender shoots to induce pore closing of the brasenia schreberi tender shoots; performing glue protection treatment to form a composite glue protection film on the surfaces of the tender shoots; loading the treated brasenia schreberi tender shoots into a tender shoot packaging box integrated with a controlled atmosphere microcapsule release unit, and sealing, so as to realize shape integrity preservation of the brasenia schreberi tender shoots; sequentially carrying out water bath and ultrahigh pressure sterilization on the sealed tender shoot packaging box; and finally, refrigerating to realize fresh-keeping packaging of the brasenia schreberi tender shoots. On the basis of a box body structure of a multi-layer composite structure, in cooperation with an inner wall anti-sticking design and a built-in controlled atmosphere microcapsule release unit system, morphological integrity preservation of brasenia schreberi tender shoots is achieved, non-acidification and chemical preservative-free high-quality preservation can be achieved in combination with glue protection treatment and gradient physical sterilization of the brasenia schreberi tender shoots, and the preservation effect of the brasenia schreberi tender shoots is improved. And the colloid retention rate is greater than 95%.

The invention relates to the field of soil improvement agents, in particular to a potamogeton crispus-based soil improvement composition and a preparation method thereof. The potamogeton crispus-based soil improvement composition comprises the following raw materials: a potamogeton crispus treatment composition, a composite functional material, a water retention and nutrient slow release agent, a passivating agent and the like. According to the method, the potamogeton crispus is effectively pretreated and converted, on the basis of simplifying existing treatment steps, the application effect of the potamogeton crispus in the soil improvement composition is greatly improved, the actual improvement effect of the potamogeton crispus-based soil improvement composition can be effectively improved through formula combination, and the phenomena of corrosion and phase separation during storage are avoided; therefore, cyclic utilization of aquatic plant waste is achieved, the existing environmental protection requirement is met, and meanwhile a good comprehensive application function is provided.

This invention discloses an experimental device for evaluating the water purification performance of constructed wetlands under low-temperature conditions, relating to the field of wastewater treatment experimental technology. The device includes an environmental chamber and multiple parallel experimental units. The environmental chamber contains a low-temperature medium, and each experimental unit includes a water storage tank, a water pump, and a substrate-filled column. The water storage tank is partially submerged in the low-temperature medium and has a support plate inside. The support plate is arranged with a layer of *Potamogeton crispus* and a layer of aquatic plants from bottom to top, separated from the upper water purification zone by an intermediate filter. The water pump, substrate-filled column, and water storage tank are connected by pipelines to form a circulating water system. By simulating a cold winter environment using the low-temperature medium, and utilizing multiple independent experimental units, the purification efficiency of different substrate and plant combinations under low-temperature conditions can be compared simultaneously, recreating the low-temperature operation scenario of natural wetlands and achieving reliable and controllable testing of the water purification performance of constructed wetlands under low-temperature conditions.

The utility model relates to the technical field of potamogeton crispus planting, disclose a kind of degradable device for potamogeton crispus stone bud planting, including hemp rope net, the interstice of the hemp rope net is hinged with several potamogeton crispus stone bud bodies;The corner of the hemp rope net is equipped with the fixing device that can be fixed to the fixing device of installation device installation;The fixing device includes the L-shaped wedge of inserting into soil through the interstice of hemp rope net.This utility model has the advantages compared with prior art in that: potamogeton crispus stone bud can be fixed in river bottom.

The application belongs to the technical field of pharmaceutical preparations and relates to a loxoprofen sodium-containing tablet and a preparation method thereof. The loxoprofen sodium tablet is composed of the following components in parts by weight: loxoprofen 100 parts, soybean isoflavone 15-45 parts, potamogeton crispus polysaccharide 10-30 parts, lactitol 2-5 parts, microcrystalline cellulose 150-242 parts, low-substitution hydroxypropyl cellulose 12-50 parts, colloidal silicon dioxide 3-20 parts and magnesium stearate 3-8 parts. The preparation process is simple, the dissolution curve of the obtained tablet is consistent with that of a commercial product, the tablet prepared by the application has a low content of related substances, the active substance is stable, the tablet is suitable for clinical use and has high development value.

The invention discloses a lysine-rich potamogeton crispus inorganic-organic fertilizer and a preparation method thereof, relates to the technical field of organic fertilizers, and belongs to the patent classification number C05G1 / 00. The preparation method of the fertilizer comprises the following steps: cleaning and draining fresh potamogeton crispus, drying until the water content is less than or equal to 10%, crushing the dried potamogeton crispus, and then performing plasma activation treatment to obtain pretreated potamogeton crispus powder; mixing the pretreated potamogeton crispus powder with soybean meal powder, and sequentially carrying out aerobic fermentation and facultative fermentation to obtain a fermented material; the preparation method comprises the following steps: compounding sodium lignin sulfonate, nano montmorillonite and gamma-polyglutamic acid to form a gelatinous slow-release carrier with a three-dimensional network structure; mixing the fermentation material with the slow-release carrier, then adding urea, calcium superphosphate, potassium sulfate and zinc sulfate, and mixing and granulating to obtain the fertilizer. Nutrient substances in the potamogeton crispus are used as fertilizer components to realize resource utilization, in addition, the fertilizer can realize regulation and control of the release rate of lysine nutrients, and the fertilizer efficiency is prolonged.

The application belongs to the technical field of plant genetic engineering, and particularly relates to application of a Potamogeton crispus ZlLG1 gene in regulation of panicle type of rice, wherein a nucleotide sequence of the ZlLG1 gene is shown as SEQ ID NO:1, and an amino acid sequence of the ZlLG1 gene is shown as SEQ ID NO:2. The application aims to realize regulation of panicle type of rice by overexpressing the ZlLG1 gene. In the case of being consistent with a growth environment of a control plant, the ZlLG1 gene overexpressed rice generates a tissue similar to a convex structure at a base of a primary branch, leading to a larger included angle between a panicle axis and the primary branch and a scattered panicle type.

The invention discloses a method for extracting tyrosinase inhibitory peptide from potamogeton crispus, relates to the technical field of active peptide, and belongs to the patent classification number C07K1 / 14. Comprising the following steps: cleaning potamogeton crispus, drying and crushing to obtain potamogeton crispus powder; adding the potamogeton crispus powder into an ethanol solution, heating, oscillating and extracting, then centrifuging, and collecting supernate to obtain a potamogeton crispus extracting solution; adjusting the pH value of the potamogeton crispus extracting solution to be alkaline, then adding alkaline protease, performing heating enzymolysis, performing enzyme deactivation and centrifugal treatment, and collecting supernate to obtain enzymatic hydrolysate; performing ultrafiltration treatment on the enzymatic hydrolysate, and collecting permeate to obtain ultrafiltration permeate; carrying out nanofiltration treatment on the ultrafiltration permeate liquid, and collecting trapped fluid to obtain nanofiltration concentrated liquid; and freeze-drying the nanofiltration concentrated solution to obtain the tyrosinase inhibitory peptide. According to the method, the tyrosinase inhibitory peptide is concentrated and purified in a manner of combining ultrafiltration and nanofiltration, the method is simple and convenient to operate, and the operation difficulty and the time cost are reduced.

The invention relates to the technical field of brasenia schreberi processing. More specifically, the invention relates to a physical extraction method and application of a brasenia schreberi macromolecular colloid. Based on the heat sensitivity characteristic of the brasenia schreberi macromolecular colloid, the invention provides the physical extraction method of the brasenia schreberi macromolecular colloid, so that the risks existing in chemical and enzyme treatment methods are reduced, and the aims of fully exerting the nutritional value of brasenia schreberi, simplifying the treatment flow and reducing the environmental risk are fulfilled. In the process of extracting the brasenia schreberi macromolecular colloid, nutritional ingredients such as cellulose and polyphenol in the brasenia schreberi are not damaged, the obtained brasenia schreberi colloid has the effects of oxidation resistance, slow release and the like, and the dissolution rate of dihydromyricetin in the ampelopsis grossedentata powder can be effectively reduced by adding the brasenia schreberi colloid into the ampelopsis grossedentata powder.

The invention discloses a method for breeding Australian lobsters in a rice field and an ecological breeding field, and relates to the technical field of lobster and rice symbiosis, the technical scheme covers differentiated field engineering, non-mechanized field parcels adopt a ring ditch layout shaped like a Chinese character'feng ', and mechanized field parcels adopt a ditch-free flat bottom type layout; clay covering layer laying and diversion trench blocking treatment are conducted on sandy soil and marsh geology; a three-stage filtering water inlet and drainage system and a totally-closed escape-proof net are arranged, and waterweed is planted in the ditch to form a biological filter bed. A staged feed feeding strategy is adopted in breeding management, 36% protein feed is fed in the juvenile shrimp stage, 32% protein feed is fed in the adult shrimp stage, dissolved oxygen, pH and temperature data are transmitted in real time in combination with an intelligent water quality monitoring system, and timing opening and closing and dissolved oxygen threshold triggering oxygen supplementation are achieved through an aeration linkage control module. A rotation mode of'two shrimps and one rice 'is implemented, agricultural travel fusion facilities including a fishing area and an Internet of Things base station are integrated, and a novel high-yield, efficient and ecological rice field comprehensive planting and breeding paradigm is constructed.

The invention belongs to the technical field of biological medicine, and discloses a brasenia schreberi polysaccharide-polyphenol synchronous extraction method based on ethanol-ammonium sulfate aqueous two-phase ultrasonic synergy, the optimal process for ultrasonic-assisted aqueous two-phase synchronous extraction of brasenia schreberi polysaccharide and polyphenol is optimized as follows: the extraction temperature is 66 DEG C, the extraction time is 33 min, the liquid-material ratio is 84 mL / g, and under the conditions, the extraction time is 30 min, and the extraction time is 30 min. The extraction yields of the polysaccharide and polyphenol of the brasenia schreberi are 5.39% and 12.53% respectively. A two-aqueous-phase extraction system is adopted, synchronous extraction of polysaccharide and polyphenol of brasenia schreberi is achieved, and the optimal extraction process is obtained through response surface optimization; purifying to obtain a water shield polysaccharide purified component, and representing a primary structure of the water shield polysaccharide purified component; high-purity brasenia schreberi polyphenol is obtained through purification, and the composition of the compound is identified.

The invention relates to the technical field of ecological protection, in particular to a growth regulation and control method for potamogeton crispus. The growth regulation and control method comprises the combination of the following two means: 1) water surface shading; (2) planting submerged plants; the submerged plants comprise one or more of elodea nuttallii, waterweed, vallisneria natans and hydrilla varticillata. According to the growth regulation and control method for the potamogeton crispus, after implementation, the plant height of the potamogeton crispus can be reduced by 30% or above, the growth rate is reduced by 55% or above, and meanwhile removal of nitrogen-containing pollutants in a water body is facilitated. According to the submerged plant planting device, submerged plant planting is input at a time, the shading floating ball can be repeatedly used and recycled, operation is easy, cost is low, no chemical agent needs to be used, and the environment is clean and free of pollution. Compared with manual potamogeton crispus salvage, the workload of the potamogeton crispus salvage device lies in throwing and recycling the floating balls in spring every year, manpower and equipment expenses are greatly reduced, and water plant residues do not need to be cleared, transported and treated.

The invention provides a preparation method and application of a potamogeton crispus alpha-glucosidase inhibitor for reducing blood sugar. Fresh potamogeton crispus stone buds and / or fresh potamogeton crispus are / is washed, dried, smashed and sieved to obtain raw material powder, 80% ethyl alcohol is used as a decolorizing agent to be mixed with the raw material powder, a precipitate 1 is obtained through ultrasonic-assisted decolorization, heat preservation and centrifugation, the precipitate 1 continues to be treated with the 80% ethyl alcohol in the same mode, and a precipitate 2 is obtained; adding water into the precipitate 2 for swelling, adjusting the pH value, carrying out ultrasonic-assisted extraction, heating extraction and centrifugation, repeating the operation on the precipitate twice, merging the three supernatants, adjusting the pH value, and carrying out vacuum concentration to obtain a concentrated solution; adding ethanol into the concentrated solution for alcohol precipitation, centrifuging to obtain a precipitate 6, adding water into the precipitate 6 for dissolving, adjusting the pH value, standing and centrifuging to obtain a precipitate 7, namely the potamogeton crispus extract. The potamogeton crispus extract can significantly inhibit the activity of alpha-glucosidase, can be used as an alpha-glucosidase inhibitor, and is used for preparing drugs for improving insulin resistance, drugs for treating diabetes mellitus and drugs for reducing blood sugar.