54 results about "Rhodioloside" patented technology

The invention belongs to the field of enzyme engineering, and relates to a glycosyl transferase mutant and application thereof in synthesis of salidroside. On the basis of a glycosyl transferase amino acid sequence as shown in SEQ ID NO: 1, iterative saturated mutation is carried out through a molecular modification technology, and the enzymatic activity and catalytic efficiency of the modified glycosyl transferase mutant are greatly improved. The mutation at a specific site can significantly promote the glycosylation activity of a tyrosol substrate. The mutant enzyme is obtained by carrying out induced expression and protein purification on the obtained mutant strain. The substrate conversion rate of the transformed glycosyl transferase mutant for catalyzing the tyrosol glycosylation reaction can reach 95% or above, the yield reaches 55.0 g / L, and an efficient and green new way is provided for salidroside production.

The invention discloses a rapid qualitative and quantitative detection method for quantitative analysis of multiple components by single marker of rhodiola rosea, astragalus membranaceus and safflower capsules, and belongs to a detection and analysis technology. According to the method, three traditional Chinese medicines, namely rhodiola rosea, astragalus membranaceus and safflower carthamus, are identified on a thin-layer plate by adopting a thin-layer chromatography method and a same test solution, the pretreatment of a sample and a reference medicinal material only needs 3 hours, 265 mL of a solvent is adopted, spots are clear, and the method is rapid; according to the established single-detection double-evaluation method for salidroside and calycosin-7-glucoside, only an ultraviolet detector is needed, detection is carried out under the wavelength of 270 nm, chromatographic peaks do not interfere with one another, single-detection double-evaluation is achieved, the efficiency is high, and the cost is low. The invention breaks through a traditional identification mode that N traditional Chinese medicine varieties are identified, N test solutions and N thin-layer plates are prepared, N times of development are needed, and N medicinal materials are identified, and establishes a rapid thin-layer identification method for three traditional Chinese medicines on one thin-layer plate by adopting the same test solution and each reference medicinal material supernatant subjected to methanol ultrasonic treatment.

The invention relates to a beauty and skin care enzyme and a preparation method thereof. According to the invention, fruits and traditional Chinese medicines are used as main fermentation raw materials, the fruits and the traditional Chinese medicines are crushed and mixed with fermentation strains, and active substances in each raw material are effectively retained through two-stage fermentation, filtration separation and freeze-drying treatment, SOD and sea buckthorn flavone contained in sea buckthorn fruits have the skin care effects of resisting oxidation and promoting collagen synthesis, and the sea buckthorn fruits have the skin care effects of resisting oxidation and promoting collagen synthesis. Salidroside contained in the rhodiola rosea has the skin care effects of resisting light aging and fatigue, astragalus polysaccharide and astragaloside contained in the astragalus membranaceus can repair a barrier and enhance immunity, ophiopogonin and polysaccharide contained in the radix ophiopogonis have the effects of preserving moisture and resisting saccharification, and hesperidin and nobiletin contained in the pericarpium citri reticulatae have the effects of resisting oxidation and adjusting grease secretion. The obtained compound enzyme has the effects of resisting oxidation, resisting inflammation and preserving moisture, has activity, stability and transdermal efficiency, and can be used in skin care products such as anti-oxidation essence, repair masks, late-up cream and the like.

The invention discloses a co-fermentation method based on sphingomonas and a rhodiola rosea extracting solution and application of a product, and belongs to the technical field of microorganisms. By utilizing a special rich enzyme system of sphingomonas and combining with an early-stage composite enzymolysis process and synergistic effect, the wall breaking efficiency of rhodiola rosea cell walls and the conversion degree of active components of rhodiola rosea are greatly improved, the bottlenecks of low efficiency and low bioavailability of a traditional rhodiola rosea extraction method are successfully overcome, and the rhodiola rosea extraction method is suitable for industrial production. The functional components such as salidroside and flavone can be fully released and converted. Secondly, different from non-symbiotic bacteria (such as lactic acid bacteria and saccharomycetes) which are commonly used for fermentation in the prior art, a potential symbiotic bacterium of sphingomonas XJL-TP07 from a special environment is innovatively selected and has better metabolic suitability with the rhodiola rosea component, the fermentation process is milder and safer (no irritant is produced), and the rhodiola rosea fermentation method is suitable for large-scale production. And a synergistic interaction effect can be generated through a unique biotransformation path.

The invention discloses saccharomyces cerevisiae with high yield of salidroside as well as a construction method and application of the saccharomyces cerevisiae. According to the recombinant saccharomyces cerevisiae, ribulose-5-phosphate isomerase RKI1 and transketolase TKL1 are expressed in host bacteria, so that precursor supply is increased; reverse methyltransferase ARO2 and phenylalanine decarboxylase ARO10 are expressed at the same time, and a tyrosine branch pathway is adjusted; then, UDP-glycosyl transferase of different sources is expressed, and iterative site-specific mutagenesis is carried out on the UDP-glycosyl transferase to enhance conversion of hydroxytyrosol to salidroside; the salidroside production performance of the recombinant strain is verified on the basis of a precursor supply pathway, a tyrosine regulation pathway and key enzyme screening, and the salidroside production capacity of the saccharomyces cerevisiae is further improved.

The invention discloses an oral hard capsule health-care product with an anti-aging function as well as a preparation method and application of the oral hard capsule health-care product. The health-care product is mainly prepared from eight active ingredients including EGT (Ergothioneine), Ca-AKG (alpha-ketoglutarate), PQQ (pyrroloquinoline quinone), fisetin, salidroside, urolithin A, spermidine and an apple stem cell extract. Through scientific compatibility of the various components, the composition disclosed by the invention can comprehensively intervene in a cell aging process through a synergistic effect of a plurality of pathways of enhancing the cell antioxidant capacity, improving the mitochondrial function, activating cell autophagy, promoting cell regeneration and repair and the like. The invention also provides a preferred content range of the health-care product, a preparation method of the health-care product and application of the health-care product in preparation of health-care foods for delaying senescence, improving cell viability or improving mitochondrial functions. The product provided by the invention has the characteristics of multiple targets and synergistic interaction, and provides a new effective scheme for anti-aging intervention.

This invention relates to a composition for improving alcoholic liver damage, belonging to the field of health product technology. This application provides the use of rhodioloside and lactose-N-trisaccharide in the prevention and / or inhibition of alcoholic liver disease. This application also provides a composition of human lactose oligosaccharides and rhodioloside. The compositions described in this application can prevent the occurrence of alcoholic liver disease or inhibit its further deterioration. This application provides a green, safe, and healthy composition, offering an ideal composition for protecting human health.

The invention discloses milk-nourishing rhodiola rosea as well as a processing technology and application thereof, and belongs to the technical field of traditional Chinese medicine processing. The processing technology comprises the following steps: taking a proper amount of a pretreated rhodiola rosea medicinal material, coarsely crushing, adding milk which is 3 times of the weight of the rhodiola rosea medicinal material, moistening, boiling with slow fire until the milk is completely absorbed, and drying. According to the milk nourishing rhodiola rosea, the salidroside content is not less than 0.50%, the extract content is not less than 25%, the acid-insoluble ash content is not less than 2.0%, the total ash content is not less than 8.0%, and the water content is not less than 12%. The invention relates to application of milk-nourishing rhodiola rosea in preparation of medicines for treating qi deficiency and blood stasis, chest stuffiness and pains, apoplexy hemiplegia and tiredness and asthma. According to the milk processed rhodiola rosea, the effect of the rhodiola rosea is improved, the bitter taste of the rhodiola rosea is effectively neutralized, the taste is softer, and the milk processed rhodiola rosea has a good development prospect.

The application provides a glycosyltransferase and its application in preparing rhodiolin, and relates to the technical field of enzyme engineering. Fraxinus pennsylvanica The glycosyltransferase FpUGT in the application is derived from Malpighia emarginata DC. There is no report about the glycosyltransferase gene capable of directly catalyzing synthesis of rhodiolin in the plants of the genus Malpighia, the application provides a new biological route for searching for the glycosyltransferase with high efficiency in synthesizing rhodiolin, and also provides a new biological material for preparing rhodiolin.

This invention relates to the field of biomedical technology, specifically disclosing an anti-inflammatory and bone-promoting rhodioloside composite hydrogel and its preparation method. The thermosensitive carrier is a triple-response system, which enhances the drug release rate only in a specific microenvironment at 37°C, with a pH of 5.5-6.5 at the site of inflammation, and in which MMPs are overexpressed. MMPs are highly expressed at the implant periodontitis site, and MMP-sensitive peptides can be specifically degraded by this enzyme. This process can trigger the precise release of rhodioloside and quercetin active ingredients in the gel, avoiding systemic drug diffusion that could lead to drug waste or side effects at other sites. Rhodioloside and quercetin synergistically downregulate the expression levels of inflammatory factors such as IL-6 and TNF-α, while nisin and chitosan-ε-polylysine grafts inhibit the growth of Porphyromonas gingivalis. Runx2 / CON expression is increased, achieving a closed-loop treatment of anti-inflammatory, antibacterial, and bone-promoting effects.

This invention proposes a method for preparing dental pulp stem cell exosomes and their applications, belonging to the field of exosome technology. Dental pulp stem cells from exfoliated deciduous teeth are seeded into serum-free α-MEM medium containing microparticles, insulin-like growth factor, transforming growth factor-β1, penicillin, and streptomycin for culture. Exosomes are isolated, dispersed in PBS solution, and incubated with microparticles, propylene glycol, and rhodioloside to obtain highly active dental pulp stem cell exosomes. The surface of these exosomes is then modified with shikonin and interferon to obtain dental pulp stem cell exosomes. The dental pulp stem cell exosomes prepared by this invention exhibit good affinity for titanium implant-mediated osteointegration repair materials, demonstrating good anti-inflammatory, immunomodulatory, osteogenic, and damage-reducing effects. Furthermore, the preparation method is simple, yields high output, and operates under mild conditions, showing broad application prospects.

The application discloses a night work activating composition containing multiple plant extract, which comprises the following components in mass: 3-5 parts of extract A, 10-15 parts of extract B, 2-4 parts of extract C, 1.5-3 parts of curcumin nano-liposome, 2-5 parts of lactobacillus fermentation filtrate, 1-3 parts of lock water magnetite, 0.1-0.3 parts of xanthan gum / acrylate compound thickening agent and 0.5-1 part of preservative composition. The night work activating composition containing multiple plant extract of the application is compounded by extract A with methyl jasmonate as a target component, extract B with rhodioside and syringic acid as target components and curcumin nano-liposome, compared with the same kind of products on the market, the antioxidant and anti-glycation capacity of the night work activating composition can be targetedly strengthened, the transdermal efficiency is improved, and the DNA repair effect and anti-inflammatory effect are improved.

The invention discloses an aquatic product liver protection feed additive based on a multi-target synergistic effect as well as a preparation method and application thereof, and belongs to the technical field of aquatic product feed additives. According to the invention, betaine hydrochloride, bile acid, taurine, macleaya cordata extract, ligustrum lucidum polysaccharide, oleanolic acid, glucurolactone, salidroside, vitamin E and nano-selenium are used as raw materials to prepare the aquatic product feed additive capable of protecting the liver, and the ligustrum lucidum polysaccharide and the salidroside play a role in protecting the liver; bile acid, taurine and betaine hydrochloride are used for promoting fat metabolism, vitamin E and nano-selenium play an anti-oxidation role, glucurolactone plays a detoxification role, oleanolic acid and macleaya cordata extract play an anti-inflammatory role, and vitamin E and nano-selenium play an anti-inflammatory role. The prepared liver-protecting feed additive for the aquatic products can cope with abnormal conditions such as hepatomegaly, white liver and green liver caused by excessive feeding, metamorphic feed feeding, water quality deterioration, pathogenic bacteria infection and the like.

The application provides a blood-activating and stasis-removing medicinal composition containing fermented douchi and a preparation method thereof, belongs to the technical field of biological medicine, and the medicinal composition comprises fermented douchi, drynaria extract, extract of pereskia aculeata, tanshinone II A, notoginsenoside R1, ligustrazine, rhodioside, total flavones of hawthorn leaves and total flavones of mulberry leaves. The fermented douchi is prepared from soybeans and black beans through fermentation by bacillus subtilis and bacillus coagulans. The drynaria extract is prepared from drynaria powder through common enzymolysis by cellulase, chitinase and beta-glucanase, extraction by a two-phase solvent, and purification by a dextran gel column. The extract of pereskia aculeata is prepared from pereskia aculeata powder through common enzymolysis by pectinase, cellulase and xylanase, common enzymolysis by bromelain and subtilisin, and purification by a macroporous adsorption resin column. The medicinal components are prepared in a specific proportion to relieve blood stasis from two dimensions of "improving blood flow dynamics + preventing thrombus formation".

The invention provides a method for producing salidroside through rhodiola crenulata adventitious root suspension culture and a culture medium, a sectional liquid suspension culture technology is adopted, and the method comprises the following steps: establishing a rhodiola crenulata aseptic seedling system, and obtaining aseptic seedlings through specific disinfection and culture conditions; liquid culture and domestication of the adventitious roots are carried out, the growth cycle of the adventitious roots is shortened to 35-40 days by utilizing an optimized culture medium and a domestication strategy, and the growth vitality is improved; according to culture optimization for efficiently accumulating the salidroside, adventitious roots are transferred into a specific induction culture medium and cultured for 8-10 days under the condition of a shaking table, and finally the content of the salidroside is larger than or equal to 0.6%. The method does not depend on natural root collection, avoids damage to wild rhodiola crenulata resources, is short in production period, high in efficiency, stable in quality and free of heavy metal and pesticide residues, can realize large-scale industrialized production, meets the market requirements of medicines and health care products, reduces dependence on wild resources, and is suitable for industrial production. Sustainable development and utilization of endangered Chinese herbal medicines are assisted.

The present application relates to the field of bioengineering, and particularly relates to genome, expression module, recombinant strain and application thereof in preparation of rhodiolin. The present application provides a genome comprising one or more of expression gene, knockout gene, overexpression gene and inhibition gene. The present application constructs a strain capable of utilizing sugarcane molasses as the only carbon source to generate rhodiolin, thereby reducing the cost of materials; then the metabolic network of the microorganism is restructured through metabolic engineering, the metabolic flow is optimized, the metabolic flux among different metabolic modules is reasonably distributed, and the efficient synthesis of the target product is promoted; finally, the mining and screening of enzymes are crucial, the enzymes with higher activity and higher specificity for specific substrates are mined and screened based on the combination of the trained large language model and the machine learning model and the structural information of the substrates, which significantly improves the titer and conversion rate of rhodiolin generation, and at the same time, reduces the generation of by-products and the accumulation of precursor substances, and will promote the large-scale production and application of rhodiolin.

The application provides a rhodioloside production strain and a construction method and application thereof, the strain lacks tyrR, feaB, ldhA, ushA, pykF genes, up-regulates tktA , aroG fbr 、 tyrA fbr、 pgm, galU, gntK the transcription level of a gene, and heterologously introduces a TDC gene from Lactobacillus brevis, a TYO gene from Micrococcus luteus, a ARO10 gene from Saccharomyces cerevisiae, and a ADH6 gene, heterologously introduces a GDH gene from Bacillus and a sugar transferase Oft8gt1 gene from Osmanthus fragrans; the construction method is to reconstruct the metabolic network of Escherichia coli to rhodioloside through metabolic engineering and genetic engineering means, which can effectively utilize glucose to synthesize rhodioloside from scratch, improve the production level of rhodioloside, and lay a solid foundation for the industrialized scale production thereof.

The invention provides a new application of salidroside in delaying replicative senescence of bone marrow mesenchymal stem cells. Research finds that the salidroside can delay replicative senescence of the bone marrow mesenchymal stem cells by reducing protein expression levels of p53, p21 and p16 of the bone marrow mesenchymal stem cells; the salidroside can delay the replicative senescence of the bone marrow mesenchymal stem cells by reducing the mRNA levels of p53, p21 and p16 of the bone marrow mesenchymal stem cells; the salidroside can reduce the positive rate of aging-related beta-galactosidase staining of the bone marrow mesenchymal stem cells. The application of the traditional Chinese medicine rhodiola rosea in the field of stem cell aging resistance is expected to be expanded, important guarantee is provided for in-vitro amplification, stemness maintenance and subsequent application of bone marrow mesenchymal stem cells, and the application has important economic value and social significance.

This invention discloses an endophytic fungus of *Aspergillus sp.* and its applications. The invention provides a novel endophytic fungus, PS4, which possesses unique antibacterial and antitumor activities. The secondary metabolites produced during fermentation contain various active ingredients, such as shikonin, 10-hydroxycamptothecin, and rhodioloside, exhibiting significant antioxidant, antibacterial, and antitumor effects. Simultaneously, the controllable fermentation process of the endophytic fungus improves the stability and yield of the product. The use of bio-fermentation is more environmentally friendly, reducing environmental impact, and ultimately provides a new option for clinical treatment, especially in combating drug-resistant strains and antitumor drugs.

The present application relates to the technical field of anti-fatigue beverage, in particular to an anti-fatigue high-efficiency sugar-reduced sports beverage based on biotechnology and a preparation method thereof, which comprises the following components: water 80-100 parts by weight, etherified rhodiola glycoside 5-10 parts by weight, hawthorn extract 8-15 parts by weight, green tea extract 6-12 parts by weight and the like. The present application adds methyl glucoside to undergo etherification reaction with rhodiola glycoside, and the etherification product generated is more stable when the environment changes, and the active ingredients are not easy to decompose; at the same time, the improvement of water solubility of methyl glucoside promotes the absorption of rhodiola glycoside, indirectly enhances the anti-fatigue effect, and thus relieves fatigue more quickly.

The invention provides genetically engineered saccharomycetes for producing salidroside as well as a construction method and application of the genetically engineered saccharomycetes. According to the technical scheme, a series of exogenous genes are introduced into a yeast engineering strain through a gene recombination technology, meanwhile, a series of pichia pastoris endogenous glucosidase genes are knocked out, and the yeast engineering strain capable of producing salidroside is obtained. The engineered yeast has the advantages of clear metabolic background, strong heterologous expression ability and the like, and can realize low-cost fermentation by taking ethanol as a carbon source and combining with an inorganic salt culture medium. The fermentation period is short, the conversion rate of the intermediate tyrosol is high, no obvious accumulation exists, excellent industrial suitability is shown, and an efficient and economical new strategy is provided for large-scale production of salidroside.

The invention relates to the technical field of biology, and particularly discloses a strain of genetic engineering recombinant escherichia coli (Escherichia coli) and an application of the Escherichia coli in production of salidroside and tyrosol. The recombinant escherichia coli is obtained by overexpressing exogenous ketonic acid decarboxylase, glycosyltransferase and endogenous UDP-glucose synthesis route key enzyme in cells of an L-tyrosine production strain. The strain can be used for efficiently synthesizing salidroside from the beginning through aerobic fermentation by taking glucose as a substrate, and antibiotics and inducers do not need to be added in the fermentation process. The invention further provides a production method of the tyrosol, high-concentration salidroside is efficiently hydrolyzed to generate the tyrosol by using a provided acid hydrolysis process, and the conversion rate reaches 98%. The genetic engineering recombinant escherichia coli provided by the invention can be used for flexibly and selectively deciding to produce salidroside or tyrosol, and the production process is simple and efficient, and can be better applied to industrial production.

The invention relates to the technical field of processing technologies of traditional Chinese medicines, and particularly provides a processing technology of wine ligustrum lucidum ait decoction pieces and dry paste powder. The process comprises the following steps: mixing a glossy privet fruit medicinal material which is cleaned and dried until the water content is less than or equal to 6% with yellow wine, adding 0.5-5wt% of crushed Chinese wolfberry, moistening for 1-2 hours until the wine liquid is completely absorbed, steaming for 14-20 hours, drying, and sieving. Furthermore, the wine-processed glossy privet fruit decoction pieces and acerola cherry powder are mixed, decocted twice, filtered, concentrated under reduced pressure, added with maltodextrin and then subjected to belt type vacuum drying, and the wine-processed glossy privet fruit dry paste powder is prepared. According to the process, the fructus lycii and the acerola cherry powder are added, the processing conditions are optimized, the content of salidroside in the wine glossy privet fruit is remarkably increased, and the medicinal value of the wine glossy privet fruit is enhanced. The process is simple and feasible, and is suitable for industrial production.

The invention discloses a preparation method of a traditional Chinese medicine preparation with an anti-fatigue effect in the technical field of traditional Chinese medicine preparations, the traditional Chinese medicine preparation is an atomized preparation, the atomized preparation takes an anti-fatigue nanoparticle suspension as a mother solution, a function optimizing agent is added for formula improvement, and the function optimizing agent comprises a dispersing agent, a stabilizing agent and a mucous membrane protector. A pullulan carrier is prepared by adopting a bromination-amination-oxidation three-step modification process, a compact three-dimensional network structure with hydrophobic-hydrophilic characteristics is constructed by combining hydroformylated lysine crosslinking and cinnamyl aldehyde grafting modification, the stable carrier structure is obtained, and through compounding of ganoderma triterpenes, salidroside and ginseng total saponins and combination of the synergistic effect of cinnamyl aldehyde, the activity of ganoderma triterpenes, salidroside and ginseng total saponins is improved, and the activity of ganoderma triterpenes, salidroside and ginseng total saponins is improved. The functions of multiple components are complementary, and the anti-fatigue effect is remarkably enhanced.

This invention relates to the field of health food technology, and more particularly to an anti-aging hard capsule of *Polygonum multiflorum* peptide and traditional Chinese medicine compound, and its preparation method. By mass percentage, it comprises the following components: 40%–60% *Polygonum multiflorum* small molecule protein peptide freeze-dried powder, 10%–20% Astragalus polysaccharide extract, 5%–15% Polygonatum polysaccharide extract, 2%–8% Lycium barbarum polysaccharide extract, 1%–5% Panax notoginseng saponin extract, and 3%–10% auxiliary traditional Chinese medicine components and pharmaceutically acceptable excipients. The auxiliary traditional Chinese medicine components are Rhodiola rosea glycoside extract and Echinacea polyphenol extract or licorice powder. This invention's compound follows the principles of traditional Chinese medicine formulation, and the product is rich in small molecule peptides and various active ingredients. It can promote collagen synthesis, clear senescent cells, enhance immunity, resist oxidation, regulate intestinal flora, and improve microcirculation, exhibiting significant anti-aging and anti-fatigue effects. The preparation process is scientifically controllable and has wide applicability.

The invention relates to a culture method of rhodiola rosea suspension cells and a production regulation and control method of a secondary product salidroside. Comprising the following steps: (1) taking a rhodiola rosea explant, and (2) detoxifying the rhodiola rosea explant by adopting a mode of combining cleaning and medicament soaking; (3) performing dedifferentiation culture on the detoxified explants to obtain embryogenic cells, wherein a callus culture medium for tissue culture is used for dedifferentiation; (4) separating and inoculating the embryogenic cells into a culture container for suspension culture, and establishing a suspension cell system by adopting oscillation or vortex culture; and (5) transferring the rhodiola rosea plant cells subjected to suspension culture into a new culture container for enlarged culture, adding a salidroside biosynthetic substrate into a culture medium, and regulating and controlling the generation of salidroside in combination with certain light and temperature conditions. The rhodiola rosea cell culture efficiency can be effectively improved, the biosynthesis rate of the salidroside is increased, and a material source is provided for stable production of the salidroside.

The invention provides a traditional Chinese medicine composition for improving immunity and a preparation method thereof. Comprising 20-30 parts of rhodiola rosea, 15-25 parts of lucid ganoderma, 10-20 parts of boschniakia rossica, 20-30 parts of fructus lycii and 500-1000 parts of Baijiu. The preparation method comprises the following steps: 1, cleaning the traditional Chinese medicines, airing, crushing into 20-40-mesh particles, and putting into a closed container; step 2, adding Baijiu, soaking for 30 days, and shaking for 1-2 times every day to promote dissolution of effective components; 3, medicine residues are filtered after soaking is completed, the obtained medicine liquid is the final product, the immunity of the composition is enhanced through the multi-target-point synergistic effect, salidroside in the rhodiola rosea can adjust the hypothalamus-pituitary-adrenal axis and relieve the stress reaction, and ganoderan can activate macrophages and T lymphocytes and promote interferon secretion, so that the immunity of the composition is improved. The phenylethanoid glycoside component of the boschniakia rossica has anti-oxidation and anti-inflammatory effects, and the lycium barbarum polysaccharide can improve the level of serum immune globulin. The composition is free of obvious toxic and side effects, and slight dry mouth possibly occurs to a few people with fire excess from yin deficiency and can be relieved after reduction.

The invention relates to the technical field of medicines, in particular to application of idesia glycoside in preparation of products for preventing and / or treating anemia and resisting hypoxia and fatigue. The compound has a remarkable promoting effect on erythrocyte and hemoglobin levels, has good anti-hypoxia and anti-fatigue capacities, has anti-hypoxia and anti-fatigue effects remarkably superior to those of salidroside, can be applied to development of drugs for treating anemia and development of drugs for resisting hypoxia environments and resisting fatigue, and has great market value.

The invention discloses application of salidroside in improvement of Alzheimer's disease by neural stem cell transplantation. The salidroside promotes NSC to be differentiated into cholinergic neurons, inhibits excessive proliferation of glial cells, regulates and controls the polarization state of microglial cells, and improves cell survival and memory functions after NSC transplantation. Salidroside regulates and controls SIRT3 expression in microglial cells, promotes NSC to be differentiated to cholinergic neurons, and inhibits differentiation of the microglial cells; meanwhile, by up-regulating SIRT3 expression, regulating and controlling the polarization state of the microglia, inhibiting activation of NLRP3 inflammasomes, promoting polarization of the microglia from M1 type to M2 type, and playing an anti-inflammatory role. By means of salidroside treatment, the cell survival rate and activity of APP / PS1 mice after NSC transplantation are remarkably improved, the cognitive function and anxiety behavior are improved, and the A beta deposition number and plaque area of the hippocampus area are reduced. The invention provides a new thought for preparing a new medicine for treating Alzheimer's disease.

The invention belongs to the technical field of biology, and particularly discloses application of glycosyl transferase PdUGT from apricot trees in biosynthesis of salidroside, and the sequence of the glycosyl transferase PdUGT is as shown in SEQ ID NO. 2. The gene coding SEQ ID NO.2 is transferred into bacillus licheniformis, tyrosol is added into a fermentation culture medium for fermentation, biologically fermented salidroside can be obtained, tyrosol can be efficiently and specifically converted to synthesize salidroside, 12 g / L of tyrosol can be converted to 23.92 g / L at most, and the conversion rate is larger than 92%. The invention lays a foundation for industrial production of salidroside by a microbial conversion method.