11 results about "Pectic polysaccharide" patented technology

The invention belongs to the technical field of cellulose resource utilization, and discloses pectic polysaccharide CSP-A2 with a remarkable enzyme protection function and application of the pectic polysaccharide CSP-A2 in increasing the yield of cellulase reducing sugar. Aiming at the problems of high production cost, reaction liquid viscosity increase, enzyme active site shielding and environmental risk caused by a chemical surfactant in a cellulose enzymolysis process, the pectic polysaccharide CSP-A2 with a remarkable enzyme protection function is prepared, and the enzyme activity of the pectic polysaccharide CSP-A2 is improved by enhancing the dispersity of enzyme molecules and promoting enzyme-substrate adsorption. The reducing sugar yield of the low-concentration cellulase under shear force and gas-liquid interface conditions is remarkably improved, and the enzymolysis efficiency is remarkably improved through the synergistic effect of the low-concentration cellulase and Tween20.

The invention discloses a preparation method of fructus alpiniae oxyphyllae pectic polysaccharide and application of the fructus alpiniae oxyphyllae pectic polysaccharide in treatment of Alzheimer's disease. The pectic polysaccharide is prepared by taking fructus alpiniae oxyphyllae as a raw material through the steps of degreasing, water extraction, alcohol precipitation, deproteinization, dialysis, chromatographic purification and the like, and is a uniform acidic polysaccharide. Structural characterization results show that the pectic polysaccharide is mainly composed of rhamnose, glucuronic acid, galacturonic acid and galactose, the content of galacturonic acid is dominant, part of residues are subjected to O-methylation and / or O-acetylation modification, and the pectic polysaccharide has a pectic acidic polysaccharide structure with alpha-(1-> 4)-D-galacturonic acid as a main chain and branched chains. Animal experiment results show that the fructus alpiniae oxyphyllae pectic polysaccharide can significantly improve the learning and memory ability and cognitive impairment of Alzheimer disease model animals. The fructus alpiniae oxyphyllae pectic polysaccharide provided by the invention is clear in source and stable in preparation method, can be used for preparing a pharmaceutical composition or functional food for preventing and treating the Alzheimer disease, and has a good application prospect.

The invention discloses application of common turnip polysaccharide in preparation of a product for preventing alcoholic liver injury and assisting in dispelling the effects of alcohol, and belongs to the technical field of natural product development and biological medicine. The common turnip polysaccharide prepared through ultrasonic and alcohol extraction is rich in galactose and rhamnose, has high galacturonic acid content, shows typical RG-I type pectic polysaccharide characteristics, can be kept stable in simulated gastrointestinal fluid and directly reaches the colon to play a role; meanwhile, the prepared common turnip polysaccharide can remarkably reduce transaminase increase and lipid accumulation caused by alcohol, and by specifically proliferating beneficial bacteria such as Akkermansia and the like, the intestinal barrier is repaired, and endotoxin is prevented from entering blood; meanwhile, liver hangover alleviating enzymes can be obviously activated, and the drunkenness time is shortened.

The invention discloses clove dreg polysaccharide with immune regulation and intestinal flora regulation functions and a preparation method thereof. The preparation method comprises the steps that dried medicine residues obtained after clove is subjected to oil extraction are taken and smashed, then water extraction, concentration, alcohol precipitation, deproteinization and other steps are carried out to obtain clove medicine residue polysaccharide, the novel clove heteropolysaccharide is further obtained through anion exchange chromatography purification, and the heteropolysaccharide is I-type rhamnogalacturonic acid pectic polysaccharide, is composed of eight monosaccharides and has specific structural characteristics. Experiments prove that the polysaccharide prepared by the invention can obviously improve the levels of serum IL-2, IL-6, IFN-gamma, IgG, IgA and IgM, enhance the immunity of the organism, regulate the diversity of intestinal flora, promote the proliferation of beneficial bacteria such as Brautella and clostridium, and inhibit harmful bacteria such as tremospirillum. According to the invention, the resource utilization of the clove dregs is realized, and a new way is provided for developing immunoregulation and intestinal health products.

Spherical cholesteric liquid crystal shells may be produced by mixing boron nitride nanotubes (BNNTs) with cellulose nanocrystals (CNCs) in water. The BNNTs may be coated with a polysaccharide (e.g., pectin). The polysaccharide may function as a dispersing agent and an emulsion stabilizer. Associated compositions, methods, films, and articles employ the shells. The shells may form spherical droplets with isotropic cores.

The invention belongs to the technical field of traditional Chinese medicine active polysaccharide and preparation thereof, and particularly relates to gardenia pectic polysaccharide as well as a preparation method and application thereof. The gardenia pectic polysaccharide is composed of rhamnose, galactose, glucose and galacturonic acid. The molar ratio of the rhamnose to the galactose to the glucose to the galacturonic acid is 1: 1.07: 1.52: 2.00. The preparation method provided by the invention is simple in process, green and environment-friendly, and relatively high in polysaccharide purity and yield. The pectic polysaccharide prepared by the invention has the effect of promoting and regulating the proliferation of intestinal flora, particularly obviously promotes the growth of intestinal acid-producing and gas-producing bacteria, and has a wide application prospect in the fields of functional foods and health-care products.

The invention relates to the technical field of biology, in particular to bacteroides fragilis FMBL Ba24006 DMX for metabolism of pectic polysaccharides and application, the bacteroides fragilis FMBL Ba24006 DMX is preserved in China Center for Type Culture Collection on January 20, 2026, the preservation number is CCTCC M 2026175, the bacteroides fragilis FMBL Ba24006 DMX has good pectin metabolism capacity, pectin can be effectively used as a carbon source to achieve rapid proliferation, and meanwhile, the bacteroides fragilis FMBL Ba24006 DMX can be used for metabolism of pectic polysaccharides. The bacterial strain has a good antibacterial effect on hemorrhagic Escherichia coli; the compound is sensitive and moderately sensitive to cefoxitin and rifampicin. The strain can produce a large amount of short-chain fatty acid when being used for fermenting pectin, and fermentation liquor taking the pectin as a carbon source has relatively strong scavenging capacity on DPPH and ABTS free radicals; a relatively good inhibition effect is achieved on the activity of alpha-amylase; the method can be used for preparing antioxidant products, fermented foods, health-care products, food additives and feeds, and has a wide application prospect.

This invention discloses a tea pectin polysaccharide and its application in immune regulation and prevention of colitis, relating to the field of biomedical technology. The invention provides a tea pectin polysaccharide whose main chain structure is composed of (1→4)-α-D-GalpA-(1→) linked together, with the repeating structural unit being (1→4)-α-D-GalpA. The (1→4)-α-D-GalpA-(1→) residues of the tea pectin polysaccharide exhibit acetylation at positions O-2 and O-3, and methyl esterification at position C-6, with a degree of acetylation of 14.80% and a degree of methyl esterification of 42.47%. The main chain structure of the pectin polysaccharide after oxidative degradation is composed of α-D-G... The structure consists of alpA-(1→4)-α-D-GalpA-(1→link and →4)-α-D-GalpA-(1→4)-β-D-GalpA links, with the linking sites located at positions O-4. The tea pectin polysaccharide of this invention and its related preparations exhibit excellent immunomodulatory effects, playing a significant role in anti-inflammatory and anti-cancer processes. It is particularly valuable in the prevention and treatment of colitis, cardiovascular diseases, immune diseases, neurodegenerative diseases, and other chronic diseases.

This invention relates to the field of Alpinia oxyphylla pectin polysaccharide technology, specifically a method for preparing Alpinia oxyphylla pectin polysaccharide, its polysaccharide composition, and its applications. The preparation method includes the following steps: S1: Pulverize whole Alpinia oxyphylla fruit, extract using hot water reflux, then concentrate, centrifuge, and add ethanol for precipitation to obtain an alcohol precipitate; S2: Dissolve the alcohol precipitate in water, add a protein removal reagent to remove plant protein, add ethanol again for precipitation, separate the precipitate, and obtain crude Alpinia oxyphylla polysaccharide; S3: Separate the crude Alpinia oxyphylla polysaccharide using a DEAE-52 cellulose column, and use a salt gradient elution to obtain two Alpinia oxyphylla polysaccharide solutions; the whole Alpinia oxyphylla fruit includes the pericarp and kernel. This invention uses whole Alpinia oxyphylla fruit as material to separate and extract two novel polysaccharide components, which have antidepressant and intestinal flora imbalance treatment effects, and can be used to prepare antidepressant or intestinal flora imbalance treatment drugs or functional foods.

The invention discloses a method for extracting pectic polysaccharide rich in RG-I based on a water-containing deep eutectic solvent containing cellulase, which comprises the following steps: S1, mixing purified plant cell walls with the deep eutectic solvent containing cellulase, stirring and heating to obtain a solid-liquid mixture; s2, centrifuging the solid-liquid mixture to obtain a first supernatant and solid residues; s3, adding water into the solid residues again, centrifuging after heating and oscillating, collecting a supernatant water solution, and repeating for five times; and S4, combining the supernatant water solutions, adding alcohols, centrifuging, collecting precipitates, and carrying out decolorization treatment. The choline chloride / propylene glycol deep eutectic solvent and the cellulase are adopted to form a synergistic extraction system, the cellulase precisely degrades a cellulose skeleton, choline chloride / propylene glycol and exposed RG-I fully interact, selective release and enrichment of the RG-I structural domain are realized, the conditions are mild, high yield and low solvent residue are ensured, the process is environment-friendly, and the method is suitable for industrial production. The pectic polysaccharide product with high RG-I content can be efficiently prepared, and the method has industrial application potential.