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53results about How to "Inhibition of uptake" patented technology

A kind of theabrownin of Zijuan Pu'er tea and its application

The invention discloses camellia sinensisvar assamica Pu'er tea theabrownin and application thereof, and belongs to the technical field of tea processing. The camellia sinensisvar assamica Pu'er tea theabrownin is obtained by the following steps of: a, sterilizing dried green camellia sinensisvar assamica for 30 minutes, adding distilled water inoculated with saccharomyces cerevisiae for food according to the standard that the final water content of the tea is 50 percent, standing for 60 minutes, putting the tea into a full-automatic controlled fermentation box of 40 to 55 DEG C with relativehumidity of 60 to 85 percent after single-layer sealing with a food fresh-keeping film, performing fermentation culture for 40 days, and drying at the temperature of 60 DEG C till the water content is 10 percent to obtain camellia sinensisvar assamica Pu'er tea; and b, crushing the camellia sinensisvar assamica Pu'er tea into 60 to 80 meshes, soaking for 60 minutes in a ratio of tea leaves to boiling water of 1 gram: 60 millimeters, performing filtration to obtain filtrate, sucking 1,000 milliliters of filtrate, adding 4,000 milliliters of edible alcohol, stirring, standing for 4 hours, performing filtration to obtain crude theabrownin extract, dissolving the crude extract by using 20 percent aqueous solution of edible alcohol, and performing traditional concentration and drying on the solution to obtain the theabrownin. The camellia sinensisvar assamica Pu'er tea theabrownin contains protein, polysaccharide and dark brown substances, can remarkably inhibit the absorption and utilization of dietary cholesterol, and can be used as an additive for food and health-care products.
Owner:YUNNAN AGRICULTURAL UNIVERSITY

Biochar-based bacterial composite soil conditioner as well as preparation and application thereof

The invention discloses a biochar-based bacterial composite soil conditioner as well as preparation and application thereof. A preparation method comprises the following steps: (1) domestication of bacteria: sequentially inoculating bacillus cereus, ochrobactrum sp. and arthrobacter sp. into a Cd-containing inorganic salt culture solution with a gradient concentration respectively for domestication and cultivation; and mixing the domesticated and cultured bacterial solutions to prepare a bacterial suspension for later use; and (2) preparation of the biochar-based bacterial composite soil conditioner: taking biochar to be mixed with the bacterial suspension, adding antagonistic elements of heavy metals in soil, then performing shaking cultivation, filtering and washing. The biochar-based bacterial composite soil conditioner provided by the invention is simple in preparation method and low in cost; microorganisms in the preparation have high tolerance to the heavy metal Cd, so that the preparation has good remediation effect on the heavy metals in the soil, and is stable, long-acting, and less affected by the environment; the invention is an in-situ chemistry-combined microbial passivation remediation technology effectively applied to heavy metal-contaminated soil in farmlands.
Owner:HUNAN HENGKAI ENVIRONMENT TECH INVESTMENT CO LTD

High-activity water soluble puer tea dietary fiber

The invention discloses high-activity water soluble puer tea dietary fiber, and belongs to the technical field of tea processing. The dietary fiber is prepared by the following steps of: crushing cooked puer tea to form 80-mesh particles; mixing 1g of tea and 100ml of de-ionized water, wherein the water temperature is 50 to 80 DEG C; preserving the heat for 12 hours; centrifugally filtering the mixture with a 300-mesh filtering cloth; adding 500 to 2,000u of composite enzyme of cellulase, hemicellulase and pectinase into the mixture of the 1g of tea dreg and 50ml of de-ionized water, wherein the water temperature is 45 DEG C and the pH value is 5.5; preserving the heat for 8 to 12 hours; performing centrifugal filtration and combining the filtrate of the two steps; mixing the filtrate and edible alcohol in the proportion of 1 to 5 and stirring for 15 minutes; standing for 5 hours and centrifugally collecting precipitate; adding 1g of precipitate into 50ml of de-ionized water, dissolving the precipitate, dialyzing the room temperature flowing water in a dialysis bag with molecular interception of 1,500 for 24 hours and collecting dark brown solution which does not pass through the dialysis bag; and concentrating under reduced pressure and performing spray drying to obtain the puer tea dietary fiber. The dietary fiber has low cost, high content of polysaccharide, oligosaccharide and protein, obviously suppresses the adsorption and utilization of dietary cholesterol and is applied to the field of health-care products of foods.
Owner:YUNNAN AGRICULTURAL UNIVERSITY

Yeast recombinant expression, purification and application of protein functional polypeptide with effect of preventing and treating atherosclerosis

The invention belongs to the field of biological engineering, and in particular to recombinant expression and purification of a fifth functional domain of an oxLDL binding protein human serum beta 2-glycoprotein I and the application thereof to diagnosis prevention and treatment of atherosclerosis. A designed primers pair is subjected to PCR amplification on a T vector of a beta 2-GPI gene fragment to obtain a gene fragment of a beta 2-GPI fifth functional domain; and pPICZ alpha A-DV is constructed by cloning, and is then subjected to power transformation to obtain a positive strain, which is subjected to recombination and purification to obtain a P.r beta 2-GPI-DV protein. The possibility of using the recombinant protein as a drug in the prevention and treatment of atherosclerosis and the feasibility of detecting the oxLDL content in serum are proved. The P.r beta 2-GPI-DV recombinant protein has purity above 90%, can reduce the content of oxLDL / beta 2-GPI binary compound in the serum, and then inhibit the uptake of oxLDL by scavenger receptors on the surface of macrophage, so as to achieve the effect of preventing and treating atherosclerosis; and because of the combination specificity with oxLDL, the P.r beta2-GPI-DV can realize the specific detection of oxLDL in serum.
Owner:DALIAN UNIV

Chili antibacterial peptide extraction and purification method

The invention discloses an optimized chili antibacterial peptide extraction and purification method. Particularly, an inventor acquires the best conditions of chili antibacterial peptide extraction byresearching the influence of different extracting liquid, solid-liquid ratios, extracting time and ammonium sulfate saturability on chili seed antibacterial peptide extraction, and further, components with good antibacterial effects are selected after ultrafiltration and crude separation and subjected to Sephadex gel filtration chromatography to obtain an electrophoresis pure antibacterial peptide sample. The extraction and purification method is simple, the antibacterial effect of an extracted antibacterial peptide is improved by 50.32% as compared with the antibacterial effect before optimization, the antibacterial peptide has a wide antibacterial spectrum, particularly has a strong inhibiting effect on Aspergillus flavus, can effectively inhibit Aspergillus flavus spore germination andmycelial growth and can further inhibit absorption and utilization of nutrient substances in a culture medium by the Aspergillus flavus. The antibacterial peptide extracted by the method is used as acorn mildew preventive, corn quality can be effectively kept, the service life is prolonged, and the antibacterial peptide is better in effect when being used with other mildew preventives.
Owner:SOUTHWEST UNIVERSITY

Method for adjusting water quality of mariculture pond by using floating ecological enteromorpha

The invention relates to the field of pond mariculture, and discloses a method for adjusting the water quality of a mariculture pond by using floating ecological enteromorpha, the method comprises the following seven steps: (1) manufacturing a plastic shed; (2) arranging a plastic shed for pond water feeding; (3) culturing floating ecological enteromorpha in a plastic shed; (4) regulating and controlling the growth water temperature of the floating ecological enteromorpha; (5) culturing floating ecological enteromorpha in a seawater pond; (6) regulating and controlling the water quality of the mariculture pond; and (7) managing the floating ecological enteromorpha. According to the method, the floating ecotype enteromorpha is cultivated by raising the temperature through solar energy through the plastic shed, and then the grown floating ecotype enteromorpha is put into the prism-shaped floating fence in the pond water by stages for enlarged cultivation, so that nutritive salt in the pond water is greatly absorbed and utilized by the floating ecotype enteromorpha, the growth of a large amount of phytoplankton in the pond is inhibited, meanwhile, as a large amount of floating ecological enteromorpha is fished away from the pond, the nutritive salt is taken out, the eutrophication of pond water is eliminated, and remarkable environmental and economic benefits are achieved.
Owner:苑春亭

Fluorescent carbon quantum dot, preparation method thereof, and application of fluorescent carbon quantum dot in preparation of antitumor drug sensitizer

The invention belongs to the technical field of medicine, and relates to a biologically safe antitumor drug sensitizer, and a preparation method and application thereof. The fluorescent carbon quantum dot is prepared by taking sugar as a raw material and oil as a reaction solvent through heating and stirring similar to traditional cooking. Compared with a traditional carbon quantum dot preparation method, the preparation method is simple, time-saving, easy to implement, simple in preparation condition requirement, low in cost and capable of achieving large-scale preparation. The prepared fluorescent carbon quantum dot is uniform in size, stable and adjustable in fluorescence emission, high in water dispersibility, high in safety and good in biocompatibility. Meanwhile, the chemical structural characteristics of the carbon quantum dot are similar to those of glucose, the carbon quantum dot can competitively inhibit glucose uptake of tumor cells, interfere growth and proliferation of the tumor cells, improve the sensitivity of the tumor cells to various antitumor agents and improve the tumor treatment effect, and the carbon quantum dot is a sensitizer for widely enhancing the tumor treatment effect, and can be popularized and applied to combined treatment of various tumors.
Owner:FUDAN UNIV

Traditional Chinese medicine composition with functions of effectively reducing fat and losing weight as well as increasing immunity

The invention relates to a traditional Chinese medicine composition with functions of effectively reducing fat and losing weight as well as increasing immunity, aiming at solving the problems that the traditional weight-reducing medicines are single in function way and obvious in side effects. The traditional Chinese medicine composition is prepared by combining basic theories of Chinese medicine with a modern targeting preparation theory, starts from the three aspects of inhibiting the absorption and utilization of the organism for the fat in food, inhibiting the liver from using glucose to synthesize the fat and inhibiting fat cells from using intake glucose and fatty acids to synthesize the fat, and can inhibit the enlargement of volumes of body fat cells and the increment of number of adipose cells by directly promoting the decomposition of the fat in a human body and indirectly controlling the adipose cells to synthesize the fat, thus cutting off the root causes of obesity by means of the three aspects and two target points; furthermore, by combining the modern medicine, the traditional Chinese medicine composition can be used for carrying out endogenous regulation from the three aspects of promoting the excretion of toxins, stimulating the nervous system and proliferating probiotics in the human body so as to increase the immunity.
Owner:HEBEI YUZHILIN PHARMA
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