541 results about "Esterase" patented technology

The invention relates to the technical field of gene engineering and enzyme engineering, in particular to an esterase mutant for degrading ethyl carbamate and application of the esterase mutant, the esterase mutant has an amino acid sequence as shown in SEQ ID NO.1 which is subjected to site mutation, the site mutation is any one or more site combined mutation of V129S, V161L or I229M, and the amino acid sequence of the esterase mutant is shown in SEQ ID NO.1. The V129S site mutation is that valine at the 129 site is mutated into serine, the V161L site mutation is that valine at the 161 site is mutated into leucine, and the I229M site mutation is that isoleucine at the 229 site is mutated into methionine. Mutation is carried out through a site-directed mutagenesis method, so that the amino acid sequence of the esterase mutant V129S / I229M is changed, the autoplasmic structure and function of eggs are changed, the esterase mutant V129S / I229M with the ethyl carbamate hydrolysis rate increased to 6.55 times in an acid environment is finally obtained, and the esterase mutant V129S / I229M has high industrial application value.

The invention belongs to the technical field of monatomic nano-enzyme material preparation, and particularly relates to a nano-enzyme preparation method for acetylcholin esterase activity detection. The Ni-NiO heterojunction material is successfully synthesized by adopting Ni-MOF as a carrier and accurately regulating and controlling the ratio of nitrogen to air in the ultrafast Joule hot calcination process. The material has rich oxygen vacancies and metal Ni sites, the oxygen vacancies and the metal Ni sites can effectively serve as anchoring sites of Pt single atoms, the loading capacity and dispersity of the Pt single atoms are remarkably improved, and therefore the excellent nano-enzyme catalytic activity is shown. In addition, the preparation method disclosed by the invention is simple and convenient in process and has a wide industrial application prospect. An acetylcholin esterase activity colorimetric sensing method constructed on the basis of the nanometer enzyme for acetylcholin esterase activity detection prepared by the method has extremely high sensitivity and low detection limit. The detection limit of the technology can be as low as 0.037 mU / mL, the problem that the sensitivity of a traditional detection method in a low-concentration sample is insufficient is remarkably solved, and remarkable clinical application potential is shown.

The invention discloses a biological catalytic synthesis method of norambrox ether, which comprises the following steps: step 1, starting from trans-nerolidol, carrying out carroll rearrangement reaction to synthesize farnesyl acetone; 2, in the presence of a cofactor, converting farnesyl acetone into high farnesol acetate under catalysis of Bayer-Villiger monooxygenase; step 3, catalyzing the deacetylation of the high-farnesol acetate by using esterase to obtain EE-high-farnesol; and step 4, carrying out enzymatic conversion on farnesol by using the squalene hopaene cyclase mutant to obtain norambrox ether. The transformation process is safe and non-toxic, Bayer-Villiger monooxygenase which is new with a key enzyme, natural co-expressed esterase, alcohol dehydrogenase and squalene and hopaene cyclase mutants matched with the system are used for synergistic transformation, so that not only is the coenzyme for oxidation reaction promoted to be recycled, but also the conversion efficiency is improved; conversion from farnesyl acetone to norambrox ether can be efficiently and specifically catalyzed, and a final product can be directly obtained from a reaction system without separation and purification of an intermediate.

The invention provides an RPA-CRISPR-Cas12a system-based detection reagent for the drug resistance of a chilo suppressalis organophosphorus insecticide, a detection method and application, and belongs to the technical field of molecular detection. The invention provides a detection reagent for chilo suppressalis organophosphorus insecticide resistance, the reagent comprises a specific RPA2 primer pair designed for chilo suppressalis acetylcholin esterase ace-1 gene A314S resistance mutation site and crRNA, a double screening mechanism of RPA amplification and CRISPR-Cas12a is combined, wild type and mutant type genes can be accurately distinguished, and the detection reagent can be used for detecting the insecticide resistance of the chilo suppressalis organophosphorus insecticide resistance to the chilo suppressalis organophosphorus insecticide resistance to the chilo suppressalis organophosphorus insecticide resistance to the chilo suppressalis organophosphorus insecticide resistance to the chilo suppressalis. The rapid, sensitive and visual nucleic acid detection of the chilo suppressalis ace-1 gene A314S resistance mutation site is realized, and a visual detection means which is high in specificity, simple and convenient to operate, economical and efficient is provided for field on-site determination of chilo suppressalis resistance populations.

The invention relates to a washing and / or cleaning agent, comprising at least one peptide and at least one enzyme which has hydrolytic activity on an ester bond, preferably selected from lipase and esterase, in particular esterase with lipolytic activity, particularly preferably lipase, wherein the peptide is suitable for adhesion to a fat- and / or oil-containing surface or to a surface coated with fat and / or oil or to a surface provided with at least one fat- and / or oil-containing soil, wherein the surface consists of hard surfaces, more preferably surfaces containing or consisting of ceramic (e.g. porcelain, earthenware), metal, steel, stainless steel, plastic, glass, natural and artificial stone, painted and enamelled surfaces, wood, laminate, linoleum and mixtures thereof, particularly preferably tableware (preferably made of ceramic such as porcelain or earthenware and plastic), metal (e.g.cutlery or pots) or glass and mixtures thereof, particularly preferably tableware (preferably made of ceramic such as porcelain or earthenware and plastic), metal (e.g. cutlery or pots) or glass, and / or textiles, more preferably textiles containing or consisting of cotton, polyester, polyamide, polypropylene and mixtures thereof, particularly preferably cotton, polyester and mixtures thereof. Furthermore, the invention relates to methods for cleaning hard surfaces and / or textiles, and to the use of such peptides and agents for improving the cleaning performance on at least one greasy and / or oily soil.

The invention discloses a p-nitrophenyl ethyl esterase mutant with high enantioselectivity as well as a construction method and application of the p-nitrophenyl ethyl esterase mutant. The p-nitrophenyl ethyl esterase mutant is obtained by mutating an amino acid sequence of wild p-nitrophenyl ethyl esterase pnbA as shown in SEQ ID NO.1 according to one or a combination of more of the following modes: leucine at the 273rd site is mutated into aspartic acid, phenylalanine at the 314th site is mutated into histidine, and leucine at the 362nd site is mutated into arginine. The mutant pnbA-L273D / F314H / L362R provided by the invention shows optimal catalytic performance (E = 47.16) for racemization-acetic acid pinyl hydrate, the enantiomeric excess value of the mutant is 95.13%, the conversion rate of 1S, 5R-acetic acid pinyl hydrate is 90.42%, the enantioselectivity of the mutant is obviously higher than that of a wild type, and the mutant has great application potential in biological catalytic synthesis of monocyclic monoterpenoid chiral alcohols.

The invention discloses a method for preparing uric acid-reducing diglyceride through enzymolysis and a product and application thereof, and belongs to the technical field of diglyceride production, the method comprises the following steps: (1) mixing vegetable oil, glycerol, water and an enzyme preparation for reaction to obtain a reaction solution; (2) standing and layering the reaction liquid, and collecting supernatant; (3) performing distillation separation on the supernatant, and performing decoloration and deodorization to obtain diglyceride; the enzyme preparation in the step (1) is prepared from lipase Lipase, esterase Esterase and phospholipase C in a weight ratio of (5-10): (0.1-0.3): 1. Compared with the prior art, the method disclosed by the invention is simple and low in cost, and the prepared diglyceride has more advantages in the aspect of reducing uric acid.

The present invention discloses a pectin methylesterase mutant ΔDdPemA, its encoding gene, preparation method, and application. The pectin methylesterase mutant ΔDdPemA is obtained by mutating the amino acid at position 200 in the center of the substrate binding pocket of the wild-type pectin methylesterase DdPemA from a high-molecular-weight, branched valine to a low-molecular-weight alanine, and by mutating the amino acid at position 339 at the substrate inlet and outlet of the substrate binding pocket from a high-molecular-weight, branched valine to a basic lysine. The amino acid sequence and nucleotide sequence of the wild-type pectin methylesterase DdPemA are SEQ ID NO. 1 and SEQ ID NO. 2, respectively. The mutant enzyme provided by the present invention has significantly improved enzyme activity under weakly acidic conditions, solving the problem of insufficient catalytic activity of the wild-type pectin methylesterase under weakly acidic conditions and creating favorable conditions for the application of the enzyme in the fields of food, textiles, and feed processing.

The present disclosure concerns polypeptide having fumonisin esterase activity exhibiting increased fumonisin esterase activity, when measured at a temperature of at least 37° C., when compared to the control polypeptide comprising the amino acid of SEQ ID NO: 3. The polypeptides of the present disclosure include one or more amino acid variations which contribute to the increase fumonisin esterase activity. The present disclosure also includes compositions comprising the polypeptide having fumonisin esterase activity, methods for detoxifying a fumonisin mycotoxin as well as processes for making the compositions comprising the polypeptide having fumonisin esterase activity.

The invention belongs to the technical field of environmental microorganisms, and particularly relates to a microbacterium strain and preparation and application of a microbial agent of the microbacterium strain. The invention discloses a strain of Microbacterium zhangzhouensis GSS18, which is preserved in Guangdong Microbial Culture Collection Center on November 14, 2022, and the preservation number is GDMCC (China General Microbiological Culture Collection Center) No.62978. The strain of Microbacterium zhangzhouensis GSS18 disclosed by the invention has the advantages that the preservation number is CGMCC No.62978; compared with the prior art, the Microbacterium zhangzhouensis GSS18 disclosed by the invention can secrete esterase and lipoid esterase, and can be used for accelerating the rapid conversion of lipid substances of the compost and promoting the compost humus process.

The invention discloses a lactobacillus mucus fermentation strain and application thereof, the lactobacillus mucus fermentation strain is preserved in Guangdong Microbial Culture Collection Center (GDMCC) on February 21, 2025, and the preservation number is GDMCCNO: 65936. The feruloyl esterase is separated and screened from white sour soup in Kailing in southeast of Guizhou province, has feruloyl esterase activity, and shows good blood fat reducing and fatty liver treating capabilities in a HepG2 high-fat cell model and a high-fat zebra fish model. The compound has a good prospect in the development of products for preventing or treating hyperlipidemia and fatty liver and relieving obesity.

The invention belongs to the technical field of functional grease processing, and particularly relates to an enzymolysis preparation method and application of diglyceride with an effect of improving Alzheimer's disease. The method comprises the following steps: mixing low-erucic acid rapeseed oil, glycerol and water, and heating to obtain a pre-reaction mixture; adding compound enzyme for reaction, and then adding candida antarctica lipase B and pseudomonas fluorescens lipase for reaction; and after the reaction is completed, carrying out molecular distillation, collecting a light-phase product, carrying out adsorption filtration, and collecting filtrate to obtain the diglyceride oil. The compound enzyme is composed of rhizomucor miehei lipase, candida rugosa lipase and candida antarctica lipase B in a weight ratio of (2-4): 2: 1. According to the method, the content of diglyceride is effectively increased, the prepared composition has the efficacy of preventing and treating Alzheimer's disease, and the efficacy is shown as improvement of reaction capacity and cognitive function, inhibition of brain apoptosis and acetylcholin esterase, enhancement of SOD and CAT vitality and improvement of related gene expression.

The invention discloses a marine-derived carboxylesterase and an application of the marine-derived carboxylesterase in degradation of PET (Polyethylene Terephthalate) plastics. The amino acid sequence of the enzyme is as shown in SEQ ID NO.1, experiments show that Tm of RbCE1 is 79.5 DEG C, 40 mM of depolymerization monomers can be generated after the enzyme treats low-crystallinity PET powder at 60 DEG C for 4 hours, the catalytic activity is equivalent to that of LCC, and good degradation activity is shown. Through escherichia coli heterologous expression, 0.4 g / L high expression quantity can be achieved in a shake flask, and the potential of remarkably reducing the enzyme production cost is achieved. Therefore, the novel carboxylesterase RbCE1 is suitable for degrading PET plastics and composite materials thereof, and is a potential enzyme preparation for efficient biological catalysis of a waste PET plastic waste enzymatic depolymerization recovery treatment process.

According to the scheme, the invention provides the recombinant macrolide enzyme as well as the preparation method and the application thereof, the amino acid sequence of the recombinant macrolide enzyme is as shown in SEQ ID NO.1, and the recombinant macrolide enzyme is derived from an EreC esterase family of enterobacter hormaechei and is obtained through site-specific mutagenesis; the mutation sites are as follows: glutamic acid at the 44th site is mutated into asparagine, tyrosine at the 55th site is mutated into proline, proline at the 76th site is mutated into arginine, phenylalanine at the 153rd site is mutated into alanine, and serine at the 219th site is mutated into glutamic acid. The method is expected to remove macrolide antibiotic pollution, and has good economic benefits and practical values.

The present invention relates to novel esterases, more particularly to esterase variants having improved activity and / or improved thermostability compared to the esterase of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.

The present invention discloses a method for preparing uric acid-lowering diglyceride by enzymatic hydrolysis, as well as its product and application, belonging to the technical field of diglyceride production. The method comprises the following steps: (1) mixing vegetable oil, glycerol, water, and an enzyme preparation to react to obtain a reaction solution; (2) allowing the reaction solution to stand for stratification and collecting the supernatant; (3) distilling and separating the supernatant, decolorizing, and deodorizing the supernatant to obtain diglyceride; the enzyme preparation in step (1) comprises lipase, esterase, and phospholipase C in a weight ratio of 5-10:0.1-0.3:1. Compared with the existing technology, the method of the present invention is simple and low-cost, and the prepared diglyceride has greater advantages in lowering uric acid.

The invention discloses recombinant yarrowia lipolytica with high yield of 3-fucosyllactose as well as a construction method and application of the recombinant yarrowia lipolytica. According to the invention, a reinforced lactose transporter lac12 gene, a reinforced GDP-mannose-4, 6-dehydratase gmd gene, a reinforced GDP-L-fucose synthase gmer gene and a 3-fucosyltransferase SUMO-fut3Bc gene with a reinforced SUMO tag are subjected to integrated expression on a recombinant yarrowia lipolytica chromosome, and a 6-phosphogluconolactonase pgl gene is subjected to overexpression, so that a recombinant yarrowia lipolytica strain is obtained. The constructed recombinant yarrowia lipolytica can maintain the genetic stability of a target gene, the yield and production efficiency of 3-fucosyllactose are remarkably improved, and the requirements of industrial production can be met.

To provide a novel squaraine dye-peptide complex that enables selective detection of esterase, being one of tumor markers.SOLUTION: A squaraine dye-peptide complex is prepared by incorporating an oligopeptide between two squaraine dyes represented by formula (1), where R1B and R2B each independently represent a C1 to C30 monovalent aliphatic hydrocarbon group, with at least one having a carboxyl group at a terminal, and R3B and R4B each independently represent H or a carboxyl group, with at least one being a carboxyl group.SELECTED DRAWING: Figure 3

The invention relates to a saccharomycetes strain with high yield of esterifying enzyme and application thereof, the classification name of the saccharomycetes strain is Wickerhamomyces anomalus, the saccharomycetes strain is preserved in China General Microbiological Culture Collection Center on March 21, 2025, the preservation number is CGMCC 33925, and the address of the preservation unit is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The strain screened by the invention has the ability of high yield of esterifying enzyme, and can synchronously catalyze synthesis of a plurality of key esters such as ethyl acetate, ethyl hexanoate, ethyl lactate and the like. Through the synergistic effect of polyesters, the flavor level of the liquor body is richer, and the liquor body is close to the composite aroma characteristic of the traditional solid fen-flavor liquor. The strain is naturally adapted to brewing of fen-flavor liquor and intensified application of medium and low temperature yeast, exogenous enzyme dependence is reduced, and the esterification capacity of yeast is improved.

The invention discloses a neuroprotective peptide with anti-inflammatory and anti-oxidation effects and application of the neuroprotective peptide. The neuroprotective polypeptide is a polypeptide with any one of the following sequences: FPDFVYK and APDTRLF. The invention provides an antioxidant effect of the neuroprotective polypeptide in a PC12 cell injury model induced by hydrogen peroxide, and the neuroprotective polypeptide can be used for preparing antioxidant drugs. The invention provides an anti-inflammatory effect of the neuroprotective polypeptide in a PC12 cell injury model induced by hydrogen peroxide, and the neuroprotective polypeptide can be used for preparing anti-inflammatory drugs. The invention provides the influence of the neuroprotective polypeptide on the expression of pathways and neurotrophic factors in PC12 nerve cells. The neuroprotective polypeptide reduces the activity of acetylcholin esterase (AChE) and up-regulates the expression of neurotrophic factors so as to alleviate nerve cell damage and enhance memory, thereby achieving the purpose of preventing and treating neurodegenerative diseases.

The invention relates to the technical field of microbial engineering, and particularly discloses a compound microbial agent for treating cyanobacterial bloom, bacillus velezensis provided by the invention destroys algae cells and inhibits the activity of related biological enzymes by secreting heterocyclic algal killing active substances, and simultaneously causes the leakage of cellular contents (such as algal toxins, polysaccharides and lipids); an extracellular enzyme system (such as alkaline phosphatase and beta-glucosidase) of the sphingomonas decomposes free algal toxins into low-toxicity linear peptide fragments and hydrolyzes beta-1, 4-glucosidic bonds in EPS at the same time, so that algae-derived organic fragments are converted into small-molecular soluble substances, and a substrate is provided for follow-up metabolism of rhodococcus; lipase and esterase secreted by rhodococcus can hydrolyze triglyceride and waxy components, fatty acid is converted into energy and a biosurfactant through a beta-oxidation pathway, and hydrophilicity of frond fragments is enhanced to promote overall degradation efficiency.

The invention relates to the field of environmental science, in particular to lignin peroxidase and application of a mutant of lignin peroxidase in degradation of thermoplastic polyurethane plastics. The invention provides a lignin peroxidase mutant, the amino acid sequence of the lignin peroxidase mutant is as shown in SEQ ID NO. 1, and the coding gene sequence is as shown in SEQ ID NO. 2. The lignin peroxidase mutant can be used independently or combined with other enzymes for degrading thermoplastic polyurethane plastics, and the molecular weight degradation efficiency of the lignin peroxidase mutant and esterase combined for degrading the thermoplastic polyurethane plastics can reach 30% or above. The research provides a new insight for green and efficient degradation of TPU plastics, provides a more sustainable solution for plastic waste management, and has a huge application prospect.

The present disclosure provides polypeptides having a cholesterol-lowering function in a soybean protein hydrolysate, a preparation method thereof, and uses thereof. The polypeptides are derived from peptide fragments having a molecular docking “binding energy” value of less than −1.2 kcal with cholesterol esterase. The peptide fragments of the polypeptides that are subjected to molecular docking with cholesterol esterase are derived from 23 polypeptides having a Peptide Ranker bioactivity score of greater than 0.9. The polypeptides possess a significant blood-lipid-lowering function.

The invention relates to a preparation method for modifying asphalt by catalyzing waste plastics through biological enzyme, and aims to realize recycling of the waste plastics and improve the performance of the asphalt through an innovative technical means. The method adopts a composite bio-enzyme catalysis and nano-enhancement technology, and comprises the steps of waste plastic pretreatment, compound enzyme solution preparation, enzyme catalysis modification reaction, interface optimization, post-treatment and the like. Firstly, waste plastic is subjected to low-temperature crushing and surface activation treatment, and an active functional group is introduced to improve the binding force with asphalt; then, a composite solution of laccase, lignin peroxidase and esterase is adopted to catalyze the reaction of the waste plastic and the asphalt, and the mechanical property of the composite material is optimized by adding carbon nanofibers and nano titanium dioxide. Finally, the modified asphalt with excellent performance is obtained through high-speed shearing and anti-aging treatment.

The present application belongs to the technical field of enzyme engineering and plastic degradation, and particularly relates to an esterase, a preparation method thereof and application thereof in plastic degradation. Genome sequencing analysis is performed on a screened polyester plastic degrading strain, and an esterase 8GL004290 is successfully screened, which belongs to the alpha / beta hydrolase family. It is verified through experiments that the polyester degrading enzyme provided by the present application can not only degrade polyester model small molecule substrates, but also exhibits good degradation capacity for different polyester plastics. The esterase 8GL004290 has the highest degradation activity on a polyurethane substrate, and the substrate types are widely covered. Therefore, the present application has extremely important application value for the biodegradation treatment of mixed plastic waste.

The invention belongs to the technical field of food nutrition, and discloses application of an artemisia selengensis extract in preparation of a medicine for improving neurodevelopmental disorder and the medicine. The artemisia selengensis extract has the following advantages and effects: the research finds that the artemisia selengensis extract has the effect of improving neurodevelopmental disorders, which is specifically embodied in that the artemisia selengensis extract can effectively increase the activity of acetylcholin esterase, lower the content of ROS (reactive oxygen species), up-regulate antioxidant indexes (GSH (glutathione) content and sod1 and cat gene expression) and relieve oxidative stress injury of zebrafish caused by NP (natriuretic peptide); meanwhile, the artemisia selengensis extract can also up-regulate the expression of a neural development gene (alpha 1-tubulin, mbp) so as to improve the neural development disorder of the zebrafish; besides, the mechanism of improving the zebrafish neurodevelopmental disorder by the artemisia selengensis extract is mainly realized through a p38 / 5-HT / Wnt / beta-catenin signal channel, expression of p38a is down-regulated (network pharmacology finds that p38 in MAPHK is a main mechanism channel), and expression of htr1aa, maoa, wnt4a and beta-catenin is down-regulated.

Certain one or more embodiments of the present disclosure are directed, inter alia, to recombinant (genetically modified) filamentous fungal cells (strains) that produce proteins of interest, methods and compositions for designing and constructing modified filamentous fungal cells that produce proteins of interest, for endogenous and / or heterologous proteins of interest (in modified filamentous fungal cells). The present invention relates to methods and compositions for expression / production / secretion / recovery and the like of recombinant filamentous fungi (e.g., phytase, lipase, glucoamylase, phospholipase, esterase, cellulase, hemicellulase, xylanase and the like), methods and compositions for the production of proteins of interest in recombinant filamentous fungi, and methods and compositions for the production of proteins of interest in recombinant filamentous fungi. Wherein the proteins produced and secreted into and / or recovered from the bouillon have a homogeneous and consistent N-linked glycosylation pattern, and / or a (unwanted) reduction in saccharification of one or more proteins of interest, and the like.

The invention discloses a derivative of a rice bran extract as well as a preparation method and application of the derivative. A C-3 benzoate prodrug system is constructed, the transmembrane absorption efficiency is remarkably improved by optimizing the oil-water partition coefficient, fixed-point slow release of active ingredients is achieved through inflammatory tissue esterase, and high bioavailability and low irritation are both considered. Meanwhile, C-25 fluorine atoms are introduced to serve as biological electron isosteres, and target affinity is enhanced by means of the unique electronic effect and polar hydrophobicity of the C-25 fluorine atoms; spatial conformation is locked through side chain saturation, so that the compound shows anti-inflammatory and tissue repair activity which is obviously superior to that of natural cycloartanol under the same dosage.

The invention relates to the technical field of natural medicines, and discloses huperzine A C12 site arylation series derivatives and a preparation method thereof, and application of the derivatives in preparation of medicines for treating central nervous system degenerative diseases. The derivative has a structure as shown in a general formula I. According to the preparation method, a natural product huperzine A is taken as a raw material, aryl bromide is taken as a substrate, one-step synthesis is carried out through palladium-catalyzed heck coupling reaction, and the compound has the advantages of high chemical selectivity, no need of functional group protection, rapidness and the like. In-vitro enzyme activity and cell experiments prove that the derivative not only shows potential acetylcholin esterase inhibitory activity, but also has high efficiency, low toxicity and better neuroprotective activity, and has a prospect in clinical treatment of Alzheimer's disease. The preparation of the derivatives also provides a design thought for the development of novel central nervous system disease treatment drugs.

The invention relates to the technical field of polyester yarns, in particular to a high-strength polyester yarn and a preparation method thereof.The method comprises the steps that PET slices with the intrinsic viscosity of 0.85-1.00 dL / g are subjected to melt spinning and cooled through circular blowing to obtain nascent fibers, the nascent fibers are subjected to surface activating treatment through low-temperature plasma or esterase bio-enzyme, and the high-strength polyester yarn is obtained; the preparation method comprises the following steps: firstly, activating fibers, then carrying out graft copolymerization reaction on the activated fibers and graft monomer solutions such as fluorinated acrylate and acrylic acid, and finally, cleaning, drying, carrying out thermal network and winding on the composite fibers, so that the prepared polyester yarn has the breaking strength of more than or equal to 7.7 g / D, the dry heat shrinkage rate of less than or equal to 3.5% and the shrinkage tension of less than or equal to 0.03 g / D, has the high functional characteristics of lasting super-hydrophobicity, antibacterial property and the like, is excellent in washing resistance, and is suitable for industrial production. The problem that functionalization is difficult due to surface inertia of the polyester fiber is solved, and the mechanical property and the surface characteristic of the polyester fiber are comprehensively improved.