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178 results about "Selenoprotein" patented technology

In molecular biology a selenoprotein is any protein that includes a selenocysteine (Sec, U, Se-Cys) amino acid residue. Among functionally characterized selenoproteins are five glutathione peroxidases (GPX) and three thioredoxin reductases, (TrxR/TXNRD) which both contain only one Sec. Selenoprotein P is the most common selenoprotein found in the plasma. It is unusual because in humans it contains 10 Sec residues, which are split into two domains, a longer N-terminal domain that contains 1 Sec, and a shorter C-terminal domain that contains 9 Sec. The longer N-terminal domain is likely an enzymatic domain, and the shorter C-terminal domain is likely a means of safely transporting the very reactive selenium atom throughout the body.

Extraction method of cardamine hupingshanesis plant selenoprotein

The invention relates to an extraction method of cardamine hupingshanesis plant selenoprotein. The extraction method comprises the following steps: (1) cardamine hupingshanesis is degreased; (2) the cardamine hupingshanesis is dipped by 75% of an alcohol solution at the temperature of 60 minus 5 to 60 plus 5 DEG C; (3) a mixture obtained after dipping is filtered, so as to remove the alcohol solution, and powder is obtained by drying; (4) the obtained powder is added with water, the water extraction operation is performed at the temperature of 60-80 DEG C; water extraction liquid is filtered and concentrated to obtain concentrated liquid; (5) ethanol is added in the concentrated liquid, the volume of the added ethanol is 70% of the total volume of the solution, and an alcohol precipitate is obtained through still standing or filtering; (6) the alcohol precipitate is added with water, and then is added with pectinase, heat preservation is performed for 40 minus 5 to 40 plus 5 minutes, thermostable amylase is added, and heat preservation is performed for 30 minus 5 to 30 plus 5 minutes, so that hydrolysate is obtained; (7) the hydrolysate is added with ethanol, the volume of the added ethanol is more than 75% of the total volume of the solution, and precipitates are obtained through still standing or filtering; (8) the precipitates are dried. The extraction method is suitable for extracting the cardamine hupingshanesis plant selenoprotein in large scale.
Owner:白宏锋

Preparation method of rice bran selenoprotein powder

The invention relates to the field of selenium-rich rice byproducts, and in particular relates to a preparation method of rice bran selenoprotein powder. The method comprises the following steps of: grinding, screening and degreasing byproduct rice bran obtained after rice processing to prepare rough rice bran into degreased rice bran, mixing 60%-70% alcohol with the degreased rice bran in the material-liquid ratio of (1:3)-(1:5), stirring on a magnetic force mixing machine for a certain period of time, and centrifuging, wherein the processes are repeated for three times; and carrying out alkaline extraction with 0.02-0.1mol/L NaOH solution for 1-3 hours in the material-liquid ratio of (1:10)-(1:20) at the temperature of 30-40 DEG C, taking supernate after centrifuging, decolorizing with active carbon, adjusting an isoelectric point by utilizing a acetic acid-natrium aceticum buffer solution for acid deposition, then centrifuging, and freezing to dry after washing, thereby obtaining the rice bran selenoprotein powder with the protein extraction ratio of 60-80%, and the selenium content of 0.2-0.3mg/kg finally. The selenoprotein powder provided by the invention is natural in nutritional ingredient, is rich in trace element selenium, keeps the original nutrition ingredients in the rice bran selenoprotein powder effectively, and is suitably used as a food auxiliary material or a nutrition enhancer.
Owner:NANJING UNIV OF FINANCE & ECONOMICS +1

Method for extraction of selenoprotein from selenium-rich tea leaves

The invention discloses a method for extraction of selenoprotein from selenium-rich tea leaves. The method includes: taking selenium-rich tea leaves as the raw materials, subjecting the selenium-rich tea leaves to drying, crushing and sieving, adding ethanol, conducting heating in water bath at 60DEG C for 30min, performing centrifugation to obtain precipitate, repeating the steps, and then carrying out drying, crushing and sieving; adding distilled water into the obtained precipitate, conducting freezing for 3-5h in a low temperature refrigerator, conducting heating in water bath at 50-70DEG C for 30min, then performing freezing in the low temperature refrigerator for 3-5h, conducting heating in water bath at 50-70DEG C for 30min, and repeating the operation three times; adding a NaOH solution, conducting heating in water bath at 70-90DEG C for 3-4h, performing centrifugation under 3500rpm for 10min, repeating the process again on the precipitate, adjusting the pH of the supernatant to 2.5-3.5, carrying out standing, centrifugation and drying to obtain coarse selenoprotein. The method provided by the invention has the advantages of simple preparation process, easy operation and environmental friendliness. The obtained product has high selenoprotein content, and is a reliable source of organic selenium. Thus, the method is suitable for industrial production.
Owner:SHAANXI UNIV OF SCI & TECH

Preparation method of selenium-enriched fruit and vegetable essence tablet with adjuvant cancer treatment effect

The invention relates to a preparation method of selenium-enriched fruit and vegetable essence tablet with adjuvant cancer treatment effect. The selenium-enriched fruit and vegetable essence tablets with adjuvant cancer treatment effects are prepared from the following raw materials in percentage by weight: 0.01-0.03% of plant selenoprotein, 5-10% of selenium-enriched garlic extract, 5-10% of selenium-enriched broccolis, 1-3% of selenium-enriched soybeans, 5-10% of selenium-enriched malt extract, 3-10% of selenium-enriched green tea, 3-10% of sweet potato extract, 3-10% of wheat bran extract, 3-10% of cucumber extract, 3-10% of asparagus extract, 3-10% of kelp extract, 3-10% of coix seed extract, 3-15% of mushroom extract, 3-15% of cordyceps extract, 3-15% of refined Poria cocos powder, 3-15% of Grossularia burejensis Berger. extract and 3-15% of B-glucan. No antiseptic is added into the fruit and vegetable essence tablets; the fruit and vegetable essence tablets are extracted from pure natural plants, and are capable of reinforcing human immunity, as well as preventing and treating cancer as an adjuvant therapy; moreover, the fruit and vegetable essence tablets are free of side effects and adverse reactions., and can be conveniently taken. Modern preparation technology and advanced quality control method are utilized in the preparation method, so that the fruit and vegetable essence tablets are safe, stable and controllable in quality.
Owner:恩施硒谷科技股份有限公司

Method for extracting plant selenoprotein from selenium-rich rice

The invention discloses a method for extracting plant selenoprotein from selenium-rich rice. The method comprises steps as follows: (1), pretreatment; (2), extraction treatment: slurry obtained after enzymolysis is mixed with an extract liquid, a mixture is subjected to far-infrared ray irradiation treatment as assistance, subjected to water bath oscillation for 1-6 h and centrifuged for 15-22 min at the temperature of 25 DEG C at the rotating speed of 3000-5000 r/min, and an obtained supernatant is a protein liquid; (3), deposition treatment: the protein liquid is enabled to be under the condition of ice bath, icy acetone 4 times the volume of the protein liquid is added, then a mixed liquid is put in an environment at the temperature of subzero 27 DEG C-subzero 17 DEG C and is placed for 3-5 h under the assistant treatment condition that sound energy density of ultrasonic waves is 10-18 W/mL for selenoprotein deposition, the mixed liquid is centrifuged for 10-15 min, precipitates are taken out and subjected to spray drying, and finally, finished selenoprotein products are obtained. The extracted plant selenoprotein has the advantages of small grain diameter and high extraction rate and the method has broad market popularization value.
Owner:AGRI RESOURCE & ENVIRONMENT RES INST GUANGXI ACADEMY OF AGRI SCI +2

Selenoprotein chewable tablet and preparation method thereof

The invention provides a selenoprotein chewable tablet and a preparation method thereof. The preparation method comprises the following steps: by taking Se-enriched tea albumen powder as a main raw material, beta-cyclodextrin as a bitter-removing agent, citric acid or malic acid or citric acid-malic acid as an acidulant, xylitol and lactitol as a sweetening agent and microcrystalline cellulose as a filler, crushing the main and auxiliary materials; sieving; then fully and uniformly mixing to obtain a mixed material; adding gelatin into the mixed material as a wetting agent; after preparing a soft material, primarily sieving and granulating; then drying again; carrying out secondary sieving, straightening granules and adding magnesium stearate; fully and uniformly mixing; and tabletting, carrying out ultraviolet sterilization and packaging to obtain the selenoprotein chewable tablet. The selenoprotein chewable tablet provided by the invention has the characteristics of simple preparation process, simplicity, convenience and feasibility in operation, environmental-friendliness, accurate dosage, convenience in carrying, stable quality, convenience in delivery and the like, is suitable for people to supplement selenium safely anytime and anywhere, and is suitable for industrial production.
Owner:SHAANXI UNIV OF SCI & TECH

Method for extracting selenoprotein from selenium-rich edible fungi

The invention discloses a method for extracting selenoprotein from selenium-rich edible fungi, relates to the field of selenoprotein extraction, and aims to solve the problem that natural edible fungiare quite low in selenium content and needs to be supplemented with the selenium content. The method specifically comprises the following steps: step one, preparing selenium-rich edible fungi; step two, acid extraction; step three, enzymolysis; step four, preparation of crude selenoprotein liquid; step five, preparation of a finished product: adding the crude selenoprotein liquid into an ethanolsolution of which the mass fraction is 88-94% and the volume is 3-5 times that of the crude selenoprotein liquid for alcoholysis to obtain precipitates, and sequentially washing the precipitates withabsolute ethyl alcohol, petroleum ether and acetone and carrying out vacuum drying to obtain the finished product. According to the invention, selenium is enriched in the edible fungi and converted into organic selenium, selenoprotein is obtained by means of enzymolysis, centrifugation, filtration and the like, the extraction rate of the selenoprotein is high, and the purity of the obtained selenoprotein is high. The finished product obtained in the invention can be applied to the field of food processing, meets demands of selenium supplementation of human bodies, and has wide application prospect.
Owner:SUQIAN ZHONGNONGKE BIOTECH CO LTD

Selenium-rich oral solution with effects of reducing blood sugar, reducing blood fat and boosting immunity and preparation method thereof

The invention provides a selenium-rich oral solution with effects of reducing blood sugar, reducing blood fat and boosting immunity. The selenium-rich oral solution comprises the following raw materials: cyclocarya paliurus, Hubei malus spectabilis, radix polygonati officinalis, chaenomeles speciosa and selenoprotein. A preparation method for the selenium-rich oral solution comprises the following steps: 1) respectively smashing or mixing and then smashing cyclocarya paliurus, Hubei malus spectabilis, radix polygonati officinalis and chaenomeles speciosa, thereby acquiring four powdered raw materials or mixed raw material powder; 2) respectively mixing the four powdered raw materials with water, heating and refluxing, thereby acquiring four filtrates, or mixing the mixed raw material powder with water, heating and refluxing, thereby acquiring a mixed filtrate; 3) mixing the four filtrates or mixing the mixed filtrate with a flocculating agent, flocculating, heating, separating solid from liquid, and using the acquired liquid as a clear liquor; and 4) concentrating the clear liquor, adding selenoprotein, seasoning, sterilizing and filling, thereby acquiring the selenium-rich oral solution. The invention also provides an application of the selenium-rich oral solution in preparing food or medicines for reducing blood sugar, reducing blood fat and boosting immunity.
Owner:WUHAN BEST CARRIER NANO TECH +1

Chlamydomonas reinhardtii Se1K expression vector as well as construction method and expression method thereof

The invention provides a construction method of a chlamydomonas reinhardtii Se1K expression vector. The construction method comprises the following steps: amplifying an ORF gene segment of human Se1K to obtain an ORF gene amplification product; amplifying an SECIS gene segment of chlamydomonas reinhardtii Se1W1 to obtain an SECIS gene amplification product; recombining the ORF gene amplification product with the SECIS gene amplification product to obtain a recombinant Se1K gene; and introducing the recombinant Se1K gene into a plasmid vector which can be expressed in the chlamydomonas reinhardtii to form a recombinant plasmid product. According to the chlamydomonas reinhardtii Se1K expression vector constructed by the method, a novel plasmid vector capable of expressing an exogenous target selenoprotein K in the chlamydomonas reinhardtii is constructed; compared with the existing in-vitro expression vectors such as a prokaryotic expression system, and a method, the product is generated by a similar expression mechanism, so that the product has good monotonicity and directionality; the efficiency is greatly improved; the chlamydomonas reinhardtii can be adopted as a reactor for producing selenoprotein during expression; and the construction method is portable and efficient, and can completely meet the bases of research on structure functions of the selenoprotein and development of selenoprotein anti-cancer drugs.
Owner:SHENZHEN CENT FOR DISEASE CONTROL & PREVENTION

Selenoprotein extracted from selenium-rich cereals and selenium-rich brassica juncea and preparation method of selenoprotein

The invention relates to selenoprotein extracted from selenium-rich cereals and selenium-rich brassica juncea. The selenoprotein comprises the following components in percentage by weight: 50%-99.9% of selenium-rich cereal proteins and 0.1%-50% of selenium-rich brassica juncea proteins. The invention also provides a method for preparing the selenoprotein. The method comprises the following steps of: preparing the selenium-rich cereal proteins; preparing the selenium-rich brassica juncea proteins; mixing the selenium-rich cereal proteins with the selenium-rich brassica juncea proteins in proportion. According to the selenoprotein disclosed by the invention, selenium-rich proteins of rice husks and selenoprotein of the selenium-rich brassica juncea are compounded, so that selenium-rich ricehusk resources are effectively utilized, the effect of intensifying selenium elements is achieved, not only can the shortcoming of low selenomethionine of the selenoprotein of the selenium-rich brassica juncea be overcome, but also the defect of the selenium-rich proteins of rice husks in the aspect of the selenocysteine can be eliminated, the biological effects of various selenoproteins containing the selenomethionine and selenocysteine mutually cooperate, and the requirements of modern people for multiple aspects of functional health-care products are met.
Owner:TIANJIN LEAMED HEALTH CONSULTATION CO LTD

Health-care food containing selenoproteins and preparation method thereof

The present invention relates to a health-care food containing selenoproteins. The health-care food containing the selenoproteins comprises the following components in parts: 20-25 parts of selenoproteins, 1-5 parts of starch, 1-3 parts of a flavoring agent, 1-5 parts of fruit powder and 10-15 parts of other auxiliary materials. The present invention also provides a preparation method of the health-care food containing the selenoproteins. The preparation method comprises mixing and granulating; and finally, the materials are prepared into medicines or health-care foods of different dosage forms. Rice bran selenium-enriched proteins and selenium-enriched brassica juncea selenoproteins are compounded to prepare the medicines or health-care foods of the different dosage forms, which effectively utilizes the selenium-enriched rice bran resource, also plays a function of strengthening selenium element, can solve a problem of relatively low selenomethionine in the brassica juncea selenoproteins, can also eliminate a deficiency of selenocysteine in the rice bran selenium-enriched proteins, thus can enable the biological effects of the various selenoproteins containing the selenomethionineand selenocysteine to be cooperated with each other, and meets needs of modern people for many aspects of functional health-care products.
Owner:TIANJIN LEAMED HEALTH CONSULTATION CO LTD
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