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127results about How to "Strong antioxidant activity" patented technology

Whey protein active peptide with antioxidant activity and preparation method thereof

The invention discloses a whey protein active peptide with antioxidant activity and a preparation method thereof. The preparation method comprises the following steps: (1) adding protease into whey protein solution for enzymolysis, wherein the enzymolysis temperature is 40-60 DEG C, and the pH value is 6.0-8.0; (2) after enzymolysis, inactivating the protease; (3) precipitating the whey protein not hydrolyzed in enzymolysis solution, and removing the whey protein to take supernatant; (4) carrying out ultrafiltration on the supernatant by an ultrafiltration membrane the cut-off molecular weight of which is less than or equal to 10,000 dalton, collecting filter liquor of peptide the molecular weight of which is less than or equal to 10,000 dalton; (5) concentrating the filter liquor; (6) desalting the concentrated liquor; and (7) concentrating the desalted solution, and then freezing and drying. In the invention, the obtained whey protein active peptide has significant antioxidant property and specific functional characteristics and stable quality, and can be widely applied to the fields of food, cosmetics, medicine and the like. The production technology is simple and is convenientfor scale production, the raw material whey protein has high use ratio, and the production cost is low.
Owner:BRIGHT DAIRY & FOOD

Integrated processing and preparing method in production place for wine rhizoma polygonati

The invention discloses an integrated processing and preparing method in a production place for wine rhizoma polygonati. The integrated processing and preparing method in the production place for the wine rhizoma polygonati comprises the following steps: taking a fresh rhizoma polygonati medicinal material, removing impurities and non-medicinal parts, and washing; scalding the washed rhizoma polygonati in boiled water for 3 to 10 minutes, then, directly cutting the scalded rhizoma polygonati into thick pieces, and spreading and drying to half-dry; spraying yellow wine on the cut thick rhizoma polygonati pieces, and moistening for 1 to 5 hours; steaming the moistened rhizoma polygonati in a steaming container for 12 hours, braising for 12 hours, spreading for 24 hours at room temperature, and steaming, braising and drying for 2 to 9 times repeatedly to obtain finished wine rhizoma polygonati. The process disclosed by the invention integrates processing in the production place and a wine rhizoma polygonati process; the produced wine rhizoma polygonati is stable and uniform in quality; the production period can be effectively shortened; the energy consumption and human cost can be reduced; continuous production can be realized; the integrated processing and preparing method in the production place for the wine rhizoma polygonati can be applied to industrial large-scale production well, and meanwhile, the antioxidant activity of the wine rhizoma polygonati which is prepared according to the method disclosed by the invention is remarkably better than commercially available rhizoma polygonati.
Owner:SHAANXI UNIV OF CHINESE MEDICINE

Earthworm extract having skin aging resisting effect and preparation method and application thereof

The invention discloses an earthworm extract having a skin aging resisting effect and a preparation method and application thereof. The earthworm extract contains polypeptides of which the molecular weight is less than or equal to 30000 Dalton, amino acid, proteins, lumbricin, vitamins and trace elements. The method comprises the following steps: smashing clean earthworms or smashing dry earthworms and soaking into water to obtain earthworm sample liquid; hydrolyzing the earthworm sample liquid by using own enzyme or added protease to obtain earthworm hydrolysate; performing ultrafiltration on the earthworm hydrolysate through an ultrafiltration membrane of which the molecular weight cutoff is less than or equal to 30000 Dalton, and freeze-drying to obtain the earthworm extract. By adopting the method, original fishy smell of earthworms is removed in the obtained earthworm extract. The earthworm extract has remarkable antioxidant activity, can be used for effectively promoting the growth and proliferation of human skin fibroblasts and promoting the synthesis of substrates such as collagen to achieve the effect of resisting aging, and can be applied to development of cosmetics and health products having the effects of resisting skin aging.
Owner:KARLIE COSMETICS MFG CO LTD +1

Chitosan quaternary ammonium salt containing organic acid salt as well as preparation method and application thereof

The invention relates to the technical field of marine chemical engineering, in particular to chitosan quaternary ammonium salt containing organic acid salt as well as a preparation method and application thereof. Chitosan, 3-chloro-2-hydroxypropyltrimethyl ammonium chloride, sodium hydroxide, isopropanol, gallic acid, caffeic acid and ascorbic acid are used as raw materials; firstly, the chitosanis dispersed in isopropanol for swelling expansion; at room temperature stirring is performed for 4h; 3-chloro-2-hydroxypropyltrimethyl ammonium chloride and a sodium hydroxide solution are added; continuous reaction is performed for 12h; then, a proper amount of ethyl alcohol is used for precipitation; the chitosan quaternary ammonium salt is obtained; finally, the chitosan quaternary ammonium salt is dissolved in water; ion exchange with the organic acid salt is performed; a final product is obtained. The chitosan quaternary ammonium salt has the advantages that active groups in derivativesare added; the activity is high; the preparation process is simple; side reaction is little; the cost of the used materials is low. The research proves that the derivatives have good water solubility; the antioxidant activity is high; wide application values are realized in the industry of medicine and functional food health care, particularly cosmetics industry.
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI

Microencapsulated DHA micro-algal oil containing antioxidant peptides and preparation method thereof

The invention relates to the field of micro-algal oil DHA microencapsulation processing, specifically to microencapsulated DHA micro-algal oil containing antioxidant peptides and a preparation method thereof. Whey protein concentrate and Arabic gum serve as microcapsule wall materials, the antioxidant peptides generated by fermentation of natural whey protein are added into the DHA micro-algal oil, a complex-coacervation method and a spraying drying method are utilized to prepare the microencapsulated DHA micro-algal oil containing the antioxidant peptides, and the shortcoming of low oxidation stability caused by the fact that the DHA micro-algal oil oxidizes easily is overcome. After the prepared DHA micro-algal oil is stored for 25 days, the peroxide value of the DHA micro-algal oil is reduced by 8 meq/kg or above compared with when no DHA micro-algal oil without the antioxidant peptides, and the microencapsulated DHA micro-algal oil is high in oxidation stability and high in sensory value. The prepared DHA micro-algal oil is wide in applied range, can serve as functional factors to be applied to industries such as medicine, food and feed, particularly to infant foods having strict regulations on additives, and the microencapsulated DHA micro-algal oil is favorable for improving memory and enhancing brain development and the like.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Hair-strengthening nutrient solution containing alpine plant extract and preparation method of hair-strengthening nutrient solution containing alpine plant extract

The invention discloses hair-strengthening nutrient solution containing an alpine plant extract. The nutrient solution comprises a component A, a component B and a component C. The component A is prepared from, by weight, 60-100 parts of deionized water and 0.01-0.05 part of a chelating agent. The component B is prepared from, by weight, 0.1-0.5 part of a pH regulating agent, 1-5 parts of a cacumen platycladi extract liquid, 0.5-1.5 parts of panthenol, 1-5 parts of a compound plant pilatory, 0.5-1 part of pyridoxine HCl, 0.1-1 part of nicotinamide, 0.01-0.2 part of the alpine plant extract, 0.01-2 parts of a ginger root extract, 0.4-1 part of a plant allergy-alleviating component, 0.01-0.5 part of a asiaticoside compound component, 0.01-2 parts of a moisturizing component and 0.0001-0.001part of a radix polygoni multiflori extract. The component C comprises, by weight, 2-3 parts of an antibacterial component. The hair-strengthening nutrient solution comprises traditional herbal medicine components for preventing hair loss and strengthening hair and is capable of replenishing hair root energy, timely repairing with the nutritional components and reducing scalp grease to make hair thick, black and high in strength.
Owner:DOCTOR PLANT GUANGDONG BIOTECHNOLOGY CO LTD

Nano lipidosome containing green tea extractive, and preparation method thereof

A preparation method for a nano lipidosome containing a green tea extractive belongs to the field of chemistry. The nano lipidosome comprises the green tea extractive, soya lecithin and cholesterol; the preparation method comprises the following steps: proportionally dissolving soya lecithin and cholesterol in chloroform to obtain a mixed solution, obtaining a transparent film through reduction vaporization, adding a phosphate buffer salt solution containing the green tea extractive, rotating till the film is dissolved, removing the remaining solvent, and performing ultrasonic processing to obtain a nano lipidosome suspension containing the green tea extractive. According to the invention, encapsulation efficiency and average particle diameter are taken as the indexes, the process parameters and the optimal prescription in preparation of the nano lipidosome containing the green tea extractive are determined through single factor experiments and orthogonal experiments. Compared with a collagen membrane added in a common green tea extractive, oxidation resistance stability, mechanical property, water and light resistance, and hydrophobicity of the collagen film added in the nano lipidosome containing the green tea extractive and prepared through the method are all improved, so that relatively good effects of food protection and environmental pollution reduction can be achieved.
Owner:FUZHOU UNIV

Method for preparing liquid mycelium fermentation culture medium formula of selenium-rich cordyceps militaris

The invention relates to a method for preparing a liquid mycelium fermentation culture medium formula of selenium-rich cordyceps militaris. The method takes natural colored silkworm cocoon sericin protein and a selenium-rich yeast as a main nitrogen source, takes mixed coarse food grains including rice, Chinese yam, potatoes, wheat, millet and corn as a main carbon source, takes organic selenium in the selenium-rich yeast as a selenium source, takes lentinan and adenosine as motivating factors, and takes other trace factors as auxiliary factors to manufacture the liquid mycelium fermentation culture medium formula of selenium-rich cordyceps militaris. The method effectively recycles abandoned husks and cocoon shells, the cost of the nitrogen source is greatly reduced, the nitrogen source in a culture medium has good bacterial resistance and antioxidant activity, and the fermentation process is not easily contaminated by bacteria. The selenium-rich yeast in the culture medium plays a role of supplementing the nitrogen source and is also a selenium source. Through the addition of the lentinan and the adenosine, the metabolism and growth of selenium-rich cordyceps militaris mycelium can be significantly improved, and the output of active materials such as cordyceps polysaccharide, cordycepic acid, cordycepin and the like is greatly increased.
Owner:浙江山清水秀农业开发有限公司

Vibration massage eye cream containing ganoderma lucidum fermentation filtrate and preparation method of vibration massage eye cream

The invention discloses vibration massage eye cream containing a ganoderma lucidum fermentation filtrate. The vibration massage eye cream is prepared from the components in parts by weight: a component A: deionized water, a thickener, a humectant, a preservative and sodium hyaluronate, a component B: an emollient, jojoba seed oil, wheat germ oil, an emulsifier, tocopherol acetate, ascorbyl tetraisopalmitate and tocopherol, a component C: a alpine vegetation extract, a centella asiatica extract, the ganoderma lucidum fermentation filtrate, ubiquinone, a pHconditioning agent and the deionized water, and a component D: pullulan, a wild soy protein, essential oil and acetyl tetrapeptide-5. According to the vibration massage eye cream, traditional Chinese medicine herbs and high-end scientificand technological ingredients are combined, the vibration massage eye cream is rich in Chinese ganoderma lucidum fermentation filtrate and other plant active substances and other functional ingredients, dark circles under eyes are reduced, skin elasticity is improved, synthesis of collagen is promoted, vitality of eye cells is improved, and thus skin around the eyes looks more elastic and youthful.
Owner:DOCTOR PLANT GUANGDONG BIOTECHNOLOGY CO LTD

Whitening emulsion containing magnolia-biondii extract and preparing method thereof

The invention discloses whitening emulsion containing magnolia-biondii extract. The whitening emulsion is prepared from A components, B components and C components. A preparing method of the emulsionincludes the steps that 1) the A components with the formula quantity are weighed, put into a water phase pot, stirred, heated to 80 DEG C to 85 DEG C and completely dissolved ready for use; 2) the Bcomponents with the formula quantity are weighed, put into an oil phase pot, stirred, heated to 65 DEG C to 75 DEG C and completely dissolved ready for use; 3) the water-phase materials obtained in the step 1) are sucked into an emulsifying kettle and stirred, the temperature is reduced to 70 DEG C, the oil-phase materials obtained in the step 2) are sucked into the emulsifying kettle and homogenized for 1 min to 5 min and continue to be stirred, and the temperature is reduced; 4) when the temperature is reduced to 45 DEG C, the C components are added, and the mixture is stirred to be even; 5)when the temperature is reduced to 40 DEG C or below, materials are filtered out. The whitening emulsion can meet the requirements of persons for natural, skin whitening and healthy skin care products, and meanwhile the invention provides the preparing method of the whitening emulsion.
Owner:DOCTOR PLANT GUANGDONG BIOTECHNOLOGY CO LTD

Turtle collagen gene functional fragment as well as recombinant protein and application thereof

The invention discloses a collagen gene functional fragment cloned from a turtle and shown in sequence SEQ ID NO.1 in a sequence table and a recombinant protein obtained by the expression of the clone gene functional fragment and shown in sequence SEQ ID NO.2 in the sequence table, wherein the recombinant protein is a recombinant turtle collagen gene functional peptide fragment. The whole length of the recombinant turtle collagen gene functional peptide fragment includes 252 amino acids, 27 specific Gly-X-Y repeating fields of collagen are contained and the molecular weight is 38kDa. The preparation method comprises the steps of constructing a colibacillus genetic engineering bacterium for expressing the recombinant turtle collagen gene functional peptide fragment; culturing the colibacillus genetic engineering bacterium; inducing and expressing the recombinant turtle collagen gene functional peptide fragment; performing purification renaturation on the recombinant turtle collagen gene functional peptide fragment. The experiment shows that the recombinant turtle collagen gene functional peptide fragment prepared by the method provided by the invention has a high antioxidant activity and also has a value of application as an antioxidant.
Owner:NINGBO UNIV
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