13 results about "Amino sugar" patented technology

The invention provides dandelion amino sugar as well as an extraction method and application thereof, and the extraction method comprises the following steps: putting dandelion leaves into an extraction kettle, conveying hot water into the extraction kettle, and pressurizing for subcritical extraction. According to the method, subcritical water is adopted to extract amino sugar in dandelion, the subcritical water not only has relatively strong dissolving capacity for polysaccharide, but also can promote full extraction of amino sugar, and water is adopted as an extraction solvent, so that environmental pollution is avoided. Meanwhile, the method has the advantages of high extraction yield, high efficiency and the like, and is expected to be applied to industrial extraction of taraxacum mongolicum amino sugar. In addition, the amino sugar obtained by the invention has a relatively strong ovarian improving function, specifically, the ovarian microenvironment can be improved, and the cyst nourishing rate can be increased.

The invention discloses C2-quaternary carbon amino sugar as well as a preparation method and application thereof. According to the preparation method, C2-position functionalized glyene is taken as a raw material, di-tert-butyldiaziridone is taken as a nitrogen source, and a double amination reaction of unsaturated bonds of sugar rings is realized by utilizing a copper-catalyzed nitrogen-nitrogen bond activation strategy, so that the C2-quaternary carbon amino sugar compound is constructed. In-vitro antifungal activity research results show that the C2-quaternary carbon amino sugar has certain inhibitory activity on tested fungi, and the compounds I-2 and I-3 show good broad-spectrum antibacterial biological activity and can be used as an agricultural bactericide. The C2-quaternary carbon amino sugar developed by the invention has the remarkable characteristics of simple and efficient synthesis method, cheap and easily available raw materials, mild reaction conditions and the like, and has a good application prospect.

A process for converting amino sugar to fructose and ammonia using one enzyme. Also provided are compositions and enzymes for converting amino sugar to fructose and ammonia.

This present disclosure provides various diamine centered poly(amino acid)-saccharide-lipid conjugates. In various embodiments, the conjugates can safely be used as water solubility or bioavailability enhancers. In one aspect, the present disclosure provides a conjugate having the structural formula wherein B is a residue of a compound having three or four available binding positions, e.g., an alkylene diamine; S is a saccharide, for example, a residue of a mono-, di- or trisaccharide group, in which each saccharide unit is a sugar, a sugar alcohol, an amino sugar or a sugar acid; L is a lipophilic carrier residue selected from fatty acid residues (for example, residues of lauric acid, myristic acid, linoleic acid, palmitic acid, oleic acid and elaidic acid), steroid acid and sterol residues, and residues of retinoids carotenoids, tocopherols, and tocotrienols; Q is a residue of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol or hexaethylene glycol; P is a residue of a polyaminoacid homopolymer; R2 is a terminal group selected from H, methyl, ethyl and maleimide; D is a secondary group that is as defined above for L or is a methyl-capped poly(ethylene glycol) residue; and d is 0, or d is 1.

The application relates to the technical field of agricultural fertilizers, and provides an amino sugar-oligosaccharide biofertilizer and a preparation method thereof. The amino sugar-oligosaccharide biofertilizer comprises 3-4 parts of amino sugar, 12-20 parts of seaweed oligosaccharide preparation liquid, 0.5-1 part of bacillus subtilis, 1-2 parts of trichoderma viride, 1-2 parts of aspergillus niger and 70-83 parts of base material. The seaweed oligosaccharide preparation liquid contained in the amino sugar-oligosaccharide biofertilizer is prepared by an acid enzymolysis-alkaline enzymolysis-biological fermentation three-step method, the content of seaweed oligosaccharide with a stable polymerization degree of 2-5 is high, the content of salicylic acid in crops can be effectively improved, the immune induction effect is obvious, the biocontrol and growth promotion effects of amino sugar and microorganisms are combined, the defense ability of crops against diseases is improved, and especially the growth and reproduction of pathogenic bacteria Pseudomonas syringae pv. tomato can be effectively inhibited, and the occurrence rate of bacterial spot disease of tomatoes can be reduced.

The present invention relates to nanoparticles formed by a hollow polymeric wall, capable of transporting drugs and active substances, or contrast media, across cellular membranes and releasing them at sites of interest. The nanoparticles are formed by self-assembly of poly(isobutene-alt-maleic anhydride) functionalised with an aminosaccharide.

The invention relates to sea urchin-derived glycopeptide as well as a preparation method and application thereof. The molecular weight of the glycopeptide is less than 3kDa, and the glycopeptide contains neutral sugar, amino sugar and tryptophan. The glycopeptide disclosed by the invention is small in molecular weight, easy to dissolve in water and capable of resisting gastrointestinal digestion; the traditional Chinese medicine composition has the effects of remarkably increasing white blood cells, protecting immune organs, relieving liver injury and other immunoregulation activities, and regulating intestinal flora; the compound is expected to be developed into drugs for improving or treating immune-related body dysfunction and / or prebiotics for regulating intestinal flora.

The present invention provides a pharmaceutical composition that, despite containing rebamipide, exhibits excellent transparency and high stability. [Solution] A pharmaceutical composition containing rebamipide, amino sugar, a solubilizer, a buffer, and an organic acid.

This invention discloses a method and system for measuring soil microbial nitrogen pumps, belonging to the field of soil biogeochemistry and agricultural ecological environment monitoring technology. The method involves applying nitrogen to a soil-crop system... 15 N-labeled nitrogen fertilizer, combined with in-situ closed sampling, membrane sample mass spectrometry (MIMS) detection, and amino sugar compound specificity. 15 This invention analyzes nitrogen emissions, simultaneously measuring the fluxes and isotopic characteristics of N2 emissions, NH3 volatilization, and N2O emissions, as well as nitrogen uptake by plants, residual nitrogen in the soil, and nitrogen fixed by microorganisms. Finally, it constructs a microbial nitrogen pump efficiency (MNUE) index to characterize the intensity and efficiency of soil microbial nitrogen pumps. This invention enables comprehensive accounting of multiple nitrogen fluxes under near-real-field conditions, accurately distinguishing the contributions of fertilizer-source and soil-source nitrogen to gaseous nitrogen emissions. It is applicable to anaerobic ecosystems such as flooded paddy fields and wetlands, providing a systematic and operable technical solution for the quantitative study of soil microbial nitrogen pumps.

This invention discloses a method for preparing a fluorescent probe specifically for the detection of D-aminomannose (D-ManN) and a rapid detection and analysis method. A novel chiral crown ether fluorescent probe (S)-Q8 is designed and synthesized based on a binaphthol backbone, achieving for the first time specific and selective fluorescent recognition of D-ManN. This probe has a short synthetic route and is simple to operate. Under excitation light at a wavelength of 285 nm, (S)-Q8 reacts with D-ManN and produces a significant fluorescence enhancement signal at 365 nm. This fluorescence signal is not interfered with by other structurally similar amino sugars, chiral amino acids, or chiral sugars. This invention achieves rapid and specific quantitative analysis of D-ManN in complex environments by developing a chiral crown ether-based fluorescent probe (S)-Q8.

1. The name of the design product: label (Jian Lida amino sugar plus chondroitin calcium tablets). 2. The use of the design product: for the external packaging of products. 3. The design points of the design product: in the pattern. 4. The picture or photo that best indicates the design points: front view. 5. The design product is a flat product, omitting rear view, left view, right view, top view, bottom view.

Provided herein are compounds of Formula (I) (i.e., compounds of R1-L-R2) or a pharmaceutically acceptable salt thereof, wherein R1 is a substituted or unsubstituted sugar, substituted or unsubstituted amino sugar, or substituted or unsubstituted deoxy sugar; L is a linker; and R2 is DNA-interacting agent (e.g., intercalating agent). Further provided are compositions, kits, methods, and uses comprising Formula (I). The compounds, compositions, kits, methods, and uses provided herein can be used for (i) delivering a compound or DNA (e.g., a plasmid) to a subject, and / or (ii) treating and / or prevention a disease or disorder.

The present application belongs to the field of environmental monitoring, and discloses a method for tracing the source of organic carbon in wetlands, specifically a method for tracing the source of organic carbon in wetlands, comprising the following steps: (1) collection of sediment samples; (2) determination of the content of biomarkers in the sediment samples, wherein the biomarkers include n-alkanes and amino sugars; (3) based on the determination results of step (2), analyzing the contribution of plant carbon sources and microbial carbon sources to soil organic carbon. The present application combines two biomarkers, n-alkanes and amino sugars, and based on different markers and total carbon content, a calculation process is proposed, which realizes the analysis and comparison of six biological source carbon inputs, i.e. wetland plant sources (herbaceous plants, algal plants, woody plants and aquatic plants) and microbial source carbon (fungal residue carbon and bacterial residue carbon), thereby realizing carbon source tracing in different dimensions.