5 results about "Amino sugar" patented technology

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.

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.

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.