6 results about "Glycosamine" patented technology

This application relates to the technical field of vaccine quality testing, specifically to a quantitative detection method for 3D-MLA in liposome adjuvants. The method includes the following steps: taking a test sample solution, adding hydrochloric acid for acid hydrolysis to completely hydrolyze 3D-MLA into D-glucosamine and D-glucosamine-6-phosphate; adding an internal standard solution and a derivatizing reagent to the hydrolyzed sample to perform a derivatization reaction, converting the glycosamine and internal standard into fluorescent derivatives; detecting the derivatized sample using high-performance liquid chromatography-fluorescence detector; and calculating the 3D-MLA content in the test sample using a standard curve method based on the ratio of the total peak area of ​​glucosamine to the peak area of ​​the internal standard. The detection method provided in this application is highly specific, sensitive, easy to operate, and suitable for large batches of samples.

The present invention relates to a method for the synthesis of 6-azido-6-deoxy-2-N-acetyl-monosaccharide-nucleotide diphosphates, in particular 6-azido-6-deoxy-2-N-acetyl-D-galactosamine-nucleotide diphosphate or 6-azido-6-deoxy-2-N-acetyl-D-glucosamine-nucleotide diphosphate. The synthesis method according to the present invention is characterized by high efficiency and high yield. Another part of the present invention is a key intermediate of the method.

This disclosure is in the technical field of synthetic biology and metabolic engineering. More particularly, the disclosure is in the technical field of fermentation of metabolically engineered microorganisms. The disclosure describes engineered microorganisms able to synthesize sialylated compounds via an intracellular biosynthesis route. These microorganisms can dephosphorylate N-acetylglucosamine-6-phopshate to N-acetyl glucosamine and convert the N-acetylglucosamine to N-acetylmannosamine. These microorganisms also have the ability to convert N-acetylmannosamine to N-acetyl-neuraminate. Furthermore, provided is a method for the large scale in vivo synthesis of sialylated compounds, by culturing a microorganism in a culture medium, optionally comprising an exogenous precursor such as, but not limited to lactose, lactoNbiose, N-acetyllactosamine and / or an aglycon, wherein the microorganism intracellularly dephosphorylates N-acetylglucosamine-6-phopshate to N-acetylglucosamine, converts N-acetylglucosamine to N-acetylmannosamine and convert the latter further to N-acetyl-neuraminate.

The invention discloses a functional composition for treating or preventing bone and joint diseases, a conditioner and application. The functional composition comprises a first active component and a second active component, and according to the concentration of the functional composition, the first active component comprises 1 [mu] g / mL-500 [mu] g / mL of elastin peptide, 40 ng / mL-20 [mu] g / mL of haematococcus pluvialis, 8 ng / mL-4 [mu] g / mL of emblic leafflower fruit and 1 [mu] g / mL-500 [mu] g / mL of mussel; the second active component comprises a broccoli aqueous extract and / or boric acid substances. Through scientific compatibility, all the components synergistically improve the levels of glycosamine poly and osteocalcin, the health of joints, cartilages and bones is protected, the components are natural in source, safe, good in biocompatibility and free of obvious side effects, and a medicine or an alternative scheme thereof is provided for treatment and prevention of bone diseases.

The invention relates to the technical field of functional food, in particular to a tendon-nourishing and bone-strengthening composition and a preparation method thereof, and the tendon-nourishing and bone-strengthening composition comprises a fermented mulberry leaf polyphenol-sea cucumber glycosamine polymer, clover leaf saponin, a selenium yeast-pachymaran compound, glucosamine, compound nuts, vitamin D, a beef-pork compound, a traditional Chinese medicine compound and cheese; the three functional components of the fermented mulberry leaf polyphenol-sea cucumber glycosamine polymer, the clover leaf saponin and the selenium yeast-pachymaran compound cooperate to effectively block the accumulation and toxic effect of harmful heavy metals in the Chinese herbal medicines in the human body, and normal absorption of trace elements necessary for the human body is not interfered at the same time.

This invention relates to a method for synthesizing 6-azido-6-deoxy-2-N-acetyl-monosaccharide-nucleoside diphosphate, particularly 6-azido-6-deoxy-2-N-acetyl-D-galactosamine-nucleoside diphosphate or 6-azido-6-deoxy-2-N-acetyl-D-glucosamine-nucleoside diphosphate. The synthetic method according to the invention is characterized by high efficiency and high yield. Another part of the invention concerns the key intermediates of this method.