6 results about "Xylonic acid" patented technology

The application belongs to the field of natural medicines, and particularly relates to cyclic peptide natural products-xylonic acid peptides and the use thereof in the preparation of anti-parasitic drugs. Specifically, 12 cyclic peptide natural products containing xylonic acid structural units are disclosed, which exhibit different degrees of anti-parasitic activity in biological activity tests and have wide application value.

The application belongs to the technical field of medicine, and discloses application of uridine-5' monophosphate and a compound thereof in preparation of a medicine for enhancing the proliferation ability of male reproductive cells. It is found for the first time that the uridine-5' monophosphate has the proliferation ability on the male reproductive cells, and the proliferation effect is best when the concentration of the uridine-5' monophosphate is 10 μM, the proliferation effect on the mouse TM3 cells is increased by 52.87% compared with a control, and the proliferation effect on the mouse TM4 cells is increased by 53.57%. In addition, the uridine-5' monophosphate has a synergistic ability when being compounded with xylonic acid lactone, and further improves the proliferation effect on the TM3 cells, thereby laying a foundation for treatment of male reproductive system diseases in the future.

An efficient method for producing L-threonic acid from L-xylonic acid is disclosed.

This invention discloses a method for the biosynthesis of high-purity L-threonate magnesium, belonging to the field of food fortification agents and biochemical synthesis technology. The invention uses L-xylorate calcium solution as a substrate, and obtains a purified L-threose solution through oxidative cleavage. Then, a complex dehydrogenase system composed of arabinose dehydrogenase, xylose dehydrogenase, and aldose dehydrogenase synergistically catalyzes the oxidation of L-threose to L-threonate. Finally, L-threonate magnesium is prepared by salt formation with magnesium hydroxide, crystallization, and drying. The purity of the obtained product is greater than 99.0%, the oxalic acid residue is less than 0.01%, the process is safe and environmentally friendly, and suitable for industrial production.

Methods and engineered hosts are disclosed that convert a lignocellulosic xylose-containing biomass source into xylonic acid and / or xylonate, which can be further processed into other useful derivatives. In particular, an exemplary engineered Bacidiomycetes, e.g., R. toruloides, host produces / expresses one or more fungal enzymes that convert xylose into xylonic acid / xylonate. Methods of using such hosts to consume pretreated lignocellulosic biomass in combination with certain native promoters and heterologous genes are also described herein.

The invention provides an ecologically fragile area vegetation intelligent restoration device and method.The method comprises the following steps that adhesive layer slurry, matrix layer slurry and seed layer slurry are sequentially sprayed and sown in an ecologically fragile area, the mass ratio of the adhesive layer slurry to the matrix layer slurry to the seed layer slurry is (3-5): (30-40): 10, and the adhesive layer slurry comprises a sodium silicate solution; the substrate layer slurry comprises water, soil powder, a bagasse fermentation product and a compound fertilizer, and the bagasse fermentation product is prepared by fermenting acetobacter xylinum; the seed layer slurry comprises seeds and the substrate layer slurry. According to the method, a sodium silicate solution is sprayed and sown on the ground of the ecologically fragile area, then matrix layer slurry is sprayed and sown to form a matrix layer, and acetic acid in the matrix layer slurry reacts with the sodium silicate solution to generate a sodium silicate gel bonding layer. The sodium silicate gel has strong viscosity and can fix the substrate layer on the ground surface.