181 results about "Phosphatidylserines" patented technology

The invention belongs to the field of enzymatic preparation of structural phospholipids, and particularly relates to a method for preparing phosphatidylserine through interfacial enzyme catalysis. A series of high-activity immobilized phospholipase are prepared by innovatively adopting bifunctional group modified hollow mesoporous silica microspheres as a carrier and adsorbing immobilized phospholipase D. The catalyst has the functions of a catalyst and an emulsifier, and a Pickering emulsion interfacial enzyme catalysis system can be efficiently constructed. In the system, the phosphatidylcholine and the serine are efficiently converted into the phosphatidylserine through a phosphatidyl transfer reaction, the conversion rate of the phosphatidylserine within 20 minutes can reach 85%-95%, and the catalytic efficiency reaches up to 372 mmol / (g.h). In addition, after the catalyst is recycled for 10 times, the conversion rate is still kept at 70.9%, and the catalyst shows excellent stability and reusability. The method has the remarkable advantages of being mild in reaction condition, high in catalytic efficiency, capable of being repeatedly used and the like, and a new technical approach is provided for industrial production of phosphatidylserine.

The invention provides a method for preparing high-purity phosphatidylserine by a batch enzyme catalysis method based on dynamic choline removal, and belongs to the technical field of enzymatic reaction. According to the method disclosed by the invention, in a reaction system for preparing phosphatidylserine, a byproduct choline is selectively adsorbed by adopting resin. Choline in a reaction system is removed in real time through the integrated adsorption separation module, the enzyme inhibition problem is solved, and meanwhile, the PC conversion rate is larger than or equal to 98% and the PS purity is larger than or equal to 96% in combination with the immobilized enzyme circulation technology; the enzyme can be reused for more than or equal to 20 times (activity retention is more than or equal to 90%); and the choline residual concentration is less than or equal to 0.5 mM (an inhibition threshold value or less).

Methods for treating cancers and precancerous conditions by administering an effective amount of a radiolabeled agent that targets cell surface phosphatidylserine, alone or in combination with other therapies, are provided. The radiolabeled phosphatidylserine targeting agent delivers radiation to cells that externally present phosphatidylserine, such as tumor cells, depleting those cells and neighboring malignant cells to effect overall tumor reduction. Radiation delivered by the radiolabeled phosphatidylserine targeting agent itself increases the cell surface expression of phosphatidylserine, leading to a feed-forward mechanism that drives further accumulation of the phosphatidylserine targeting agent at target lesions to enhance its therapeutic effect.

The present disclosure provides for improved compositions of ionizable lipid nanoparticles for the delivery of therapeutic nucleic acids to cells. Anionic phospholipids, including phosphatidylserine and phosphatidylglycerol are included in the lipid nanoparticles to increase the transfection efficiency in human dendritic cells. The further incorporation of mono-unsaturated alkyl chain analogs in dimethylaminopropyl-dioxolane or heterocyclic ketal ionizable lipids in the formulation demonstrated high levels of transfection in human dendritic cells, compared to other ionizable lipids in the same family, and demonstrated good stability to oxidative damage. Finally, the use of an ammonium salt of phosphatidylserine allows for the efficient production of PS-targeted LNPs.

The invention relates to the technical field of biology, and particularly discloses phosphatidylserine nervonic acid gel candies capable of improving concentration and a preparation method of the phosphatidylserine nervonic acid gel candies. The invention relates to a phosphatidylserine nervonic acid gel candy for improving concentration. Comprising the following raw materials in parts by weight: 50 to 200 parts of phosphatidylserine, 10 to 30 parts of cis-15-tetracosenoic acid, 1 to 10 parts of a balm extract, 1 to 10 parts of a salvia officinalis extract, 1 to 10 parts of N-acetylneuraminic acid, 1 to 10 parts of tea theanine, 100 to 400 parts of medium chain triglyceride, 5 to 40 parts of beeswax, 5 to 40 parts of phospholipid and the balance of purified water. The composition can be used for improving concentration and has the advantages of being good in stability, good in taste and high in acceptability.

The invention relates to the technical field of functional food and biological medicine, in particular to a modified pseudo-ginseng exosome and an intestinal conditioning gel composition and application thereof. According to the gel beverage, an exosome derived from panax notoginseng callus cultured in a laboratory is used as a core active component, is modified through phosphatidylserine-aminated pectin-genipin and is embedded into a hydrogel matrix composed of carboxymethyl chitosan and sodium alginate, so that the exosome is protected from being degraded in the stomach, and the activity of the exosome in the stomach is improved. The exosome can be effectively released under the intestinal pH and flora environment, so that the targeted delivery of the intestinal tract is realized, and the preparation method is suitable for improving the intestinal inflammation and maintaining the intestinal health. The invention can effectively solve the technical problems of uncontrollable raw material quality and safety, low oral delivery stability and active ingredient availability and poor medication compliance of the existing plant exosome.

The invention discloses a lipid composition for preparing extracellular vesicles, which is prepared from the following lipid substances in percentage by mass: 2 to 18 percent of phosphatidylcholine, 2 to 14 percent of phosphatidylethanolamine, 7 to 27 percent of sphingomyelin, 0.5 to 7 percent of ceramide, 1.5 to 2.5 percent of phosphatidylinositol, 30 to 70 percent of cholesterol and 5 to 8 percent of phosphatidylserine, the fatty acid carbon number of the lipid substance satisfies the following conditions: the fatty acid carbon number of phosphatidylcholine is 16-20, the fatty acid carbon number of phosphatidyl ethanolamine is 16-18, the fatty acid carbon number of sphingomyelin is 16-24, the fatty acid carbon number of ceramide is 16-24, the fatty acid carbon number of phosphatidylinositol is 16-20, the fatty acid carbon number of phosphatidylserine is 18-24, and the molar ratio of cholesterol to sphingomyelin is 4-7. The extracellular vesicles are prepared from the lipid composition and used for biomarkers or drug carriers, and efficient oral drug delivery is achieved.

The present invention belongs to the field of biotechnology and pharmaceutical engineering technology, and discloses a functionalized drug-loaded exosome based on milk exosomes, a preparation method thereof, and an application thereof. The functionalized drug-loaded exosomes include a carrier and a water-insoluble drug, and the water-insoluble drug is loaded inside the carrier; wherein the surface of the carrier is loaded with milk exosomes with functionalized molecules, and the functionalized molecule is any one of phosphatidylserine, a molecule capable of macrophage targeting, and a molecule or polymer that enhances the targeting and stability of milk exosomes; the water-insoluble drug is any one of an antibacterial drug, an antitumor drug, and a gene drug. The functionalized drug-loaded exosomes in the present invention can improve the gastrointestinal stability of oral administration and enhance the efficacy against bacterial pathogens; expand the application scope of milk exosomes in the fields of anti-intestinal bacterial infection and food preservation, and the exosome content in milk is very rich, which is convenient for large-scale preparation and has important application value.

The present invention relates to a composition comprising, preferably consisting of, (i) a single empty liposome, wherein said single empty liposome is selected from (a) an empty liposome comprising cholesterol, wherein the amount of cholesterol is at least 30% (weight per weight), wherein preferably said empty liposome comprising, further preferably consisting of, cholesterol and sphingomyelin; or (b) an empty liposome consisting of sphingomyelin; or (ii) a mixture of empty liposomes; wherein said mixture of empty liposomes comprises, preferably consists of, at least one empty liposome selected from (a) an empty liposome comprising cholesterol, wherein the amount of cholesterol is at least 30% (weight per weight), wherein preferably said empty liposome comprising, further preferably consisting of, cholesterol and sphingomyelin; (b) an empty liposome consisting of sphingomyelin; and (c) an empty liposome comprising, preferably consisting of, phosphatidylcholine and sphingomyelin; and at least one empty liposome independently of each other selected from an empty liposome comprising, preferably consisting of, lipids or phospholipids selected from cholesterol, sphingomyelins, ceramides, phosphatidylcholines, phosphatidylethanolamines, phosphatidylserines, diacylglycerols, and phosphatidic acids containing one or two or more saturated or unsaturated fatty acids longer than 4 carbon atoms and up to 28 carbon atoms; for use in a method for preventing or reducing biofilm formation or for eradicating or reducing existing biofilm.

Provided herein are methods and materials for using organisms (e.g., engineered yeast strain-derived) to generate lipid compositions which can modulate cellular aging, extend lifespan, and / or modulate gut homeostasis in a subject. The lipid compositions contain at least twelve of the lipids selected from a phosphatidylethanolamine (PE); a lysophosphatidylethanolamine (LPE); a diacylglycerol (DG); a monoglyceride (MG); an acyl carnitine (AcCa); a phosphatidic acid (PA); a phosphatidylglycerol (PG); a lysophosphatidylcholine (LPC); a triacylglycerol (TG); a cholesterol ester (ChE); a wax ester (WE); a phosphatidylserine (PS); a phosphatidylcholine (PC); a phosphatidylinositol (PI); a ceramide (Cer); and a lysophosphatidylserine (LPS).

The invention belongs to the technical field of nutritional compositions, and particularly relates to a composition, a preparation method thereof and application of the composition in protecting brain health. The composition provided by the invention is prepared from docosahexaenoic acid, 3-sialic acid lactose and phosphatidylserine. The composition is clear in sleep improvement effect, can effectively solve the problem of sleep maintenance caused by sleep deprivation, has the effects of protecting neural functions, improving memory and relieving anxiety from multiple dimensions, and can repair brain tissue damage and protect brain health. Based on the composition, products for assisting in improving memory, preventing and treating insomnia and anxiety, regulating neurodevelopmental disorders, protecting brain health and improving concentration can be developed, the health requirements of different people are comprehensively met, and the application value is high.

The invention relates to the technical field of health food, in particular to a nervonic acid nutrient composition for relieving sleep disorder and application of the nervonic acid nutrient composition for relieving sleep disorder. The active components comprise natural vegetable oil such as acer truncatum seed oil purified nervonic acid, linseed oil and the like and gamma-aminobutyric acid extracted by fermentation; the synergistic component is prepared from soybean enzymolysis phosphatidylserine, saccharomycetes fermentation coenzyme Q10 and plant source B vitamins; the slow-release carrier adopts pectin-Arabic gum composite gel and plant starch to form a natural cross-linked structure, and long-acting release for 8-12 hours is realized through physical cross-linking. Green technologies such as ultrasonic dispersion and low-temperature drying are adopted in the preparation process, and chemical synthesis steps are avoided; the composition can improve the difficulty in falling asleep and improve the sleep quality, the activity retention rate is greater than or equal to 85% after the composition is stored at 45 DEG C for 6 months, and the composition is suitable for preparing capsules, gel candies and other health-care foods and has no dependence after being taken for a long time.

The present invention provides a kind of composition containing bird's nest acid, phospholipid and polyunsaturated fatty acid and preparation method thereof, composition, when not adding any additives, bird's nest acid is dispersed in DHA grease in functional ingredients, while solving the problem that DHA is easily oxidized, promotes brain development, regulates immunity, promotes the absorption and utilization of minerals in the intestine and the effects of beauty and skin care. Phospholipids can prevent the sedimentation of bird's nest acid in ω 3 polyunsaturated fatty acid grease, and are phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol or phosphatidylserine. Not only can the sedimentation of bird's nest acid be prevented, but also the growth of nerve cells can be supported, thereby improving the absorption rate of DHA in the brain. Especially PS, itself can not only nourish the brain, enhance brain function, but also relieve mental stress and improve cognition, and is called "brain nutrient".

The invention relates to a phospholipase D mutant Lip-Gri / NQ, a plasmid, a recombinant bacterium and application of the phospholipase D mutant Lip-Gri / NQ and belongs to the field of enzyme engineering, the amino acid sequence of the phospholipase D mutant is shown as SEQ ID NO: 1, and the nucleotide sequence of a gene for coding the phospholipase D mutant Lip-Gri / NQ is shown as SEQ ID NO: 2. The invention also provides a recombinant plasmid and an engineering bacterium containing the gene of the recombinant plasmid phospholipase D mutant Lip-Gri / NQ, and application of the phospholipase D mutant Lip-Gri / NQ in catalyzing phospholipids to generate specific-configuration functional lipids including phosphatidylserine. According to the phospholipase D Lip-Gri disclosed by the invention, wild phospholipase D Lip-Gri from Streptomyces griseofuscus is transformed through site-directed mutagenesis, and the enzyme activity of the obtained mutant is remarkably improved and is 11 times that of the wild phospholipase D Lip-Gri.

The present disclosure describes anti-inflammatory properties of red blood cell extracellular vesicles, e.g., as mediated by heme, hemoglobin and / or phosphatidylserine content. The present disclosure describes technologies useful for the treatment of inflammatory diseases, disorders, or conditions (e.g., atherosclerosis).

The present composition comprises magnesium-L-threonate and a neurotransmitter such as, but not limited to phosphatidylserine and optionally, at least one of vitamin C, vitamin B6, and vitamin D3. The composition has been shown to increase at least one of memory or cognition in clinical study subjects. The present disclosure is further directed to methods of identifying and a subject with a memory or cognitive deficiency and administering a therapeutically effective amount of a formula comprising magnesium-L-threonate and a neurotransmitter to improve the memory and / or cognitive deficiency. In some implementations, the magnesium-L-threonate is Magtein®. It is also intended that any other neurotransmitter that results in a synergistic composition of the magnesium-L-threonate and the neurotransmitter by administered to improve a subject's memory and / or cognition.

This invention discloses a method for preparing a composite spray that improves hemostasis at wound sites. The composite spray includes solution A and solution B, where solution B is an aqueous solution of sodium alginate. The preparation method of solution A includes: 1. Dissolving a lipopeptide conjugate, cholesterol, distearylphosphatidylcholine, distearylphosphatidylserine, and dimethyl sulfoxide in a chloroform-methanol mixed solution to obtain a mixed system; 2. Preparing a precursor solution from the mixed system using a thin-film hydration method; 3. Adding calcium chloride to the precursor solution and reacting it in the dark to obtain solution A. This invention designs the precursor solution based on the function of natural platelets, and its function is equivalent to that of nanoplatelets. Combined with sodium alginate, it can specifically alleviate the adverse effects on the coagulation system caused by blood loss, such as fibrin degradation and reduced platelet activation, at wound sites. It has the characteristics of rapid hemostasis, good bioactivity, and rapid wound healing.

The present invention discloses a β-carotene-grape seed extract eye-care preparation for retinal protection, relating to functional health foods. The preparation comprises active components and food-acceptable excipients. In parts by weight, the active components include 1–4 parts lutein, 0.5 –2 parts meso-zeaxanthin, 2 – 6 parts β-carotene, 8 – 25 parts blueberry extract, 5 – 18 parts grape seed extract, 0.2–1 part L-ergothioneine, 0.5–3 parts saffron extract, and 1–5 parts phosphatidylserine. The excipients comprise a filler, disintegrant, binder, and lubricant, with a weight ratio of active components to excipients of 1:1 to 1:4. By combining these eight components at specific ratios, the invention achieves synergistic effects, protects retinal health, and reduces blue-light damage. Dual-phase microencapsulation based on solubility, together with standardized preparation steps, improves stability and utilization efficiency.

Tolerogenic liposome-based compositions and uses thereof for treating immune disorders. The compositions include two populations of liposomes. The first population of liposomes has a size in the range from 2 to 200 nm, and the second population of liposomes has a size in the range from 500 to 2000 nm. The liposomes of the first and second populations carry one or more antigens. The liposomal membrane of each liposome in the first and second liposome populations include phosphatidylserine in an amount ranging from 20 to 60% by weight with respect to the total composition of the liposome's membrane.

The present disclosure describes PLPC-DB, an ultrapure phospholipoproteomic composition consisting of essential phospholipids, bioactive proteins, and intercellular regulatory factors, derived from the supernatant of peripheral blood mononuclear cells (PBMCs). This composition achieves a purity level exceeding 99% through a patented purification process that integrates high-speed advanced centrifugation and selective ultrafiltration, ensuring the structural stability and functional integrity of its bioactive components. PLPC-DB is optimized for advanced research and diagnostic applications, providing reproducibility, consistency, and safety across multicenter studies. The essential biomolecular components of PLPC-DB include phosphatidylcholine and phosphatidylserine, which contribute to membrane stability and intracellular signaling, while cell communication peptides enhance intercellular signaling, homeostatic regulation, and biochemical coordination. Structural and regulatory lipids support cell membrane biogenesis and functional stability, whereas adhesion and signaling proteins mediate cell-cell interactions and immune response coordination. Additionally, bioactive regulatory factors modulate immune and inflammatory responses, contributing to tissue regeneration and metabolic homeostasis.

Disclosed in the present invention is a phosphatidylserine and docosahexaenoic acid (DHA) composite, and its application thereof in a functional preparation, belonging to the field of health-care food. By combining two substances in a specific ratio and further applying them to edible functional preparations, brain entry efficiency of unsaturated fatty acids including DHA is improved. The ratio verifies a synergistic interaction mechanism of two active ingredients. Phosphatidylserine promotes enrichment of fatty acids such as the DHA in a brain by enhancing permeability of a blood-brain barrier, promotes neurogenesis, and enhances learning and memory abilities. Moreover, combination of the phosphatidylserine (PS) and the DHA can significantly improve an expression level of neurotrophic factors and protect and repaire a nervous system. (Figl)

The present disclosure concerns methods for treating pancreatic cancer cells with a combination of gemcitabine (GEM) and SapC-DOPS. In some aspects, GEM treatment preferentially targets G1 phase cells which are low in surface phosphatidylserine (PS), resulting in an increased median surface PS level of PDAC cells. Inversely, SapC-DOPS targets high surface PS cells which are predominantly in the G2 / M phase. In other aspects, a combination therapy on tumors in vivo with SapC-DOPS and GEM or Abraxane® (Abr) / GEM is demonstrated to significantly inhibit tumor growth and increases survival.

The invention provides a refreshing and anti-fatigue composition as well as a preparation method and application thereof, and relates to the technical field of nutritional supplements. The refreshing and anti-fatigue composition is prepared from the following components in parts by mass: 1000 to 5000 parts of phosphatidylserine, 300 to 500 parts of taurine, 10 to 20 parts of nicotinamide, 2 to 3 parts of vitamin B1, 1 to 1.5 parts of vitamin B6 and 0.001 to 0.002 part of vitamin B12. The refreshing and anti-fatigue composition alleviates the problems of complex material consumption, large component intake, too high sugar content and the like of the refreshing and anti-fatigue composition in the prior art. The refreshing and anti-fatigue composition can promote energy metabolism, improve brain functions and relieve physical and mental fatigue. The formula supports nervous system health through multiple ways, helps people to keep sober and concentrate, and reduces the feeling of fatigue at the same time.

The invention relates to an adipose-derived stem cell culture medium containing wormwood extract and a preparation method of the adipose-derived stem cell culture medium, and belongs to the technical field of biology. The adipose-derived stem cell culture medium contains a DMEM (Dulbecco Modified Eagle Medium) basal culture medium, and also contains the following components: 5 to 7 [mu] g / mL of wormwood extract, 1 to 1.5 [mu] g / mL of phosphatidylserine, 0.02 to 0.03 [mu] g / mL of D-calcium pantothenate, 1.2 to 1.5 [mu] g / mL of sialic acid, 0.06 to 0.08 [mu] g / mL of eucommia male flower peptide, 0.3 to 0.35 [mu] g / mL of transferrin and 0.3 to 0.4 mg / mL of bovine serum albumin. The prepared adipose-derived stem cell culture medium has a good promoting effect on proliferation of adipose-derived stem cells from rabbits and mice, the added wormwood polysaccharide extract has a good bacteriostatic effect, and the safety and stability of the culture medium can be effectively maintained.

The present application relates to a kind of brain health nutrition capsule and its preparation method, belong to the technical field of functional health food.The preparation method includes the following steps: taking walnut kernel powder, DHA algal oil microcapsule powder, phosphatidylserine, ginkgo biloba extract and oligosaccharides are mixed, soft material is prepared by adding purified water, granulation is extruded by screen, and granule core is obtained by drying;Granule core is coated, and brain nutrition core granule is obtained by drying;Prepare base nutrition layer granule;Brain nutrition core granule and base nutrition layer granule are mixed, and composite granule is obtained, and composite granule is filled into capsule.The present application not only solves the three major obstacles of oxidation, precipitation and vitamin degradation of high polyphenol walnut base formula in gastric acid environment, but also unexpectedly builds from stomach protection to intestinal microecological optimization, finally realizes the cascade effect of brain nutrition efficient absorption, meets the core needs of teenagers brain health and intelligence, and truly realizes the effect of brain health and intelligence.

The invention relates to the technical field of food, and particularly discloses DHA algal oil PS lutein ester gel candies capable of promoting brain development and improving eyesight and a preparation method thereof.The DHA algal oil PS lutein ester gel candies capable of promoting brain development and improving eyesight are of a three-layer sandwich structure, the slow-release capsule comprises an outer-layer rubber sheet, a middle slow-release layer and an inner core active layer from outside to inside, the outer-layer rubber skin is prepared from gelatin, glycerol, sorbitol liquid, pectin, stevioside, edible essence and water; the middle slow-release layer comprises beeswax, medium chain triglyceride and phospholipid; the inner core active layer is prepared from DHA algal oil, phosphatidylserine, lutein ester oil, (3R, 3 'S)-dihydroxy-beta-carotene oil, starch acetate, a blueberry powder solid beverage and citric acid. The DHA algal oil phosphatidylserine lutein ester gel candy can promote brain development, improve learning and memory, improve concentration, prevent blue light, prevent myopia, improve myopia and relieve asthenopia.

The invention relates to the technical field of biological medicine, and particularly discloses a macrophage membrane coated plateau encephaledema drug carrier and a preparation method and application thereof, and the macrophage membrane coated plateau encephaledema drug carrier is composed of a nanoparticle core and a macrophage membrane shell layer wrapping the core; the nanoparticle core comprises an ROS-responsive carrier material and carbon monoxide release molecules MnCO entrapped in the ROS-responsive carrier material; the content of phosphatidylserine in the shell layer of the macrophage membrane is not less than 5 mol% of the total phospholipid of the membrane. According to the invention, a bionic delivery system of ROS response type MnCO nanoparticles coated with a macrophage membrane is constructed, phosphatidylserine on the surface of the membrane is utilized to actively activate a microglial cell Trem2 receptor, a positive feedback cycle of targeting phagocytosis-CO release-Trem2 up-regulation is formed, and at the same time, fatty acid oxidative metabolism reprogramming is promoted by means of degraded membrane lipid, so that the biomimetic delivery system is used for preparing the ROS response type MnCO nanoparticles. And multi-mechanism synergistic efficient brain-targeted therapy is realized.

This invention belongs to the field of heavy metal pollution remediation technology, and relates to the preparation and application of a cadmium passivating agent for weakly alkaline soil. The weakly alkaline soil cadmium passivating agent mainly comprises the following components by weight: 30-50 parts of a mineral complex, 40-60 parts of a bioactive component, and 5-15 parts of an auxiliary stabilizer. The mineral complex includes natural sepiolite, calcium-based bentonite, and a polyether-polyester diblock copolymer; the bioactive component includes microbial agents, phosphorus-modified biochar, lecithin, and phosphatidylserine; and the auxiliary stabilizer includes nano-hydroxyapatite and a chitosan-grafted polyaspartic acid complex. This weakly alkaline soil cadmium passivating agent exhibits excellent remediation effects on cadmium in contaminated soil, effectively preventing or reducing the entry of cadmium and other heavy metals into the food chain, and has significant market potential.

The present application belongs to the technical field of pharmaceutical compositions, and particularly relates to a composition with sleep improvement effect and application thereof.The composition comprises gamma-aminobutyric acid, Poria cocos extract, and can further comprise Rhizoma Polygonati extract and phosphatidylserine.The composition can achieve the effect of sleep improvement within a specific ratio range.The composition takes into account functionality and nutrition, and exhibits broad application prospects in the aspect of sleep improvement function.

The invention belongs to the technical field of phosphatidylserine production, and particularly relates to immobilized phospholipase D based on biological imprinting and a preparation method and application thereof. The preparation method comprises the following steps: S1, dissolving L-serine in an acetic acid buffer solution to obtain a serine solution, adding a phospholipase D solution into the serine solution, and stirring to obtain a mixed solution; s2, adding sodium alginate into the mixed solution, stirring and dissolving to obtain a biopolymer solution; s3, adjusting the pH value of the chitosan solution to be neutral, then adding CaCl2 into the chitosan solution, and stirring and dissolving to obtain a CaCl2-containing chitosan solution; and S4, dropwise adding the biopolymer solution into a chitosan solution containing CaCl2, complexing to form microspheres, collecting the microspheres, and washing and drying the microspheres to obtain the immobilized phospholipase D based on biological imprinting. According to the method, the biological imprinting technology and the enzyme immobilization technology are combined, the immobilized PLD with high selectivity and high stability is prepared, and the phosphatidyl transfer reaction efficiency is improved.