28 results about "Condensed tannin" patented technology

The invention discloses an application of a QfAP1 gene and an encoding protein thereof in regulation and control of synthesis of condensed tannin in fruits. The QfAP1 gene sequence is as shown in (a) or (b): (a) a nucleotide sequence as shown in Seq ID No: 1; and (b) a nucleotide sequence encoding an amino acid sequence having at least 70% or more homology with the amino acid sequence as shown in SEQ ID NO: 2. According to the application, synthesis of condensed tannin in fruits is reduced by inhibiting expression of the QfAP1 gene or synthesis of condensed tannin in fruits is increased by overexpressing the QfAP1 gene. For example, the content of condensed tannin in Quercus fabri fruits can be reduced by inhibiting QfAP1 gene expression, so that the astringency of Quercus fabri fruits is reduced, and the Quercus fabri fruits can be directly eaten.

The invention relates to a preparation method of aronia melanocarpa relaxing juice, and belongs to the field of food processing. The preparation method comprises the following steps: adding an edible gelatin aqueous solution with a freezing force value of 120-250Bloom g into aronia melanocarpa juice to obtain a mixed solution, adjusting the pH value of the mixed solution to 2-5, carrying out a water bath reaction, rapidly cooling, standing, filtering, sterilizing and canning to obtain the aronia melanocarpa softening juice. According to the method, specific precipitation of condensed tannin is realized by accurately regulating and controlling molecular conformation and reaction pH of gelatin, so that the content of condensed tannin in the aronia melanocarpa juice is reduced, adverse symptoms such as diarrhea and gas displacement increase caused by the condensed tannin are effectively relieved, meanwhile, a bioactive substance anthocyanin in the aronia melanocarpa juice is not destroyed by the method, and the method is suitable for large-scale production of the aronia melanocarpa juice. The raw material composition is simple, and the process is convenient and easy to implement.

The invention discloses a plant lactobacillus IMAUYHD26, application of the plant lactobacillus IMAUYHD26 and a method for degrading sainfoin condensed tannin, the plant lactobacillus IMAUYHD26 is classified and named as plant lactobacillus, the plant lactobacillus IMAUYHD26 is preserved in the China Center for Type Culture Collection, the preservation time is November 11, 2024, and the preservation number is CCTCC NO: M 20242507. The degradation rate of the screened plant lactobacillus IMAUYHD26 on the sainfoin condensed tannin reaches 76.73%, and the utilization value of the sainfoin condensed tannin or a feed containing the sainfoin is effectively improved.

The invention discloses a pecan astringency removal method, which is characterized in that tannase and pecan kernels react at about 40 DEG C, so that the contents of main astringency component substances such as condensed tannin, flavone and phenolic compounds in pecan endopleura can be effectively reduced, and the original rich nutrition and unique flavor of pecan are maintained. The invention also discloses a degradation catalysis area of tannase in a deastringency process. The method provided by the invention can solve the problems existing in the existing hickory nut deastringency processing technology, retains better quality and taste of hickory nut compared with the traditional water boiling hickory nut deastringency, still retains partial substances such as saccharides, soluble protein, fatty acid and the like with nutritional value while deastringency, reduces water consumption, reduces wastewater pollution, and is suitable for industrial production. And the green and healthy processing purpose is achieved.

The present disclosure provides compositions and methods for producing condensed tannins in maize. The present disclosure further provides maize plants, seeds, cells, and plant parts comprising increased catechin based proanthocyanidins or increased condensed tannins. Aspects of the disclosure further relate to methods for producing, growing, and breeding modified maize plants.

The invention belongs to the technical field of wine brewing, relates to a natural sweet wine low-sulfur brewing method for delaying white grapes until the white grapes turn red and then harvesting the white grapes, solves the health hidden danger and flavor defects caused by high-sulfur addition in the traditional sweet white wine process, and remarkably improves the flavor quality of the wine at the same time. According to the method, complete and healthy red (total anthocyanin content is greater than or equal to 5mg / kg) fruits are selected through artificial spike selection and grain selection, and the cardinal number of infectious microbes in raw materials is reduced; no commercial yeast is added, natural slow fermentation is achieved by means of microorganisms, and the finished product is good in flavor and quality; gallic acid, condensed tannin and hydrolyzed tannin with a ratio of 1: 1: 1 are compounded to prepare wine-brewing tannin, and the wine-brewing tannin and low-dose sulfur dioxide construct a synergistic system, so that the sulfur consumption of sulfur dioxide is greatly reduced, secondary fermentation of high-sugar wine liquid is prevented, and infectious microbes and wine body oxidation are effectively inhibited. The finished product biogenic amine, pesticide and heavy metal residues all meet the safety standard, mycotoxin is not detected, meanwhile, the original flavor of the wine body is prominent, the storage stability is good, and dual guarantee of health and quality is achieved.

A process for the manufacture of a non-isocyanate polyurethane (NIPU) composition by transesterification of a condensed tannin with a carbonate or a carbonate precursor followed by the reaction with a hardener selected from diamines, triamines, polyamines and mixtures thereof and products and compositions obtained thereby.

This invention discloses *Bacillus licheniformis* strain LWY-37-2, which was deposited on February 21, 2023, at the China General Microbiological Culture Collection Center (CGMCC), located in Beijing, with accession number CGMCC No. 26654. This invention also discloses a method for degrading condensed tannins using *Bacillus licheniformis* LWY-37-2, comprising the following steps: setting an inoculation viable count of 5 × 10⁻⁶ cells / year. 6 With a CFU / g content and a feed-to-water ratio of 1:0.8, the pH of the rapeseed meal fermentation substrate was adjusted to 7 without sterilization. Fermentation was carried out at 30℃ for 3 days, with the substrate turned over every 12 hours. The Bacillus licheniformis LWY-37-2 disclosed in this invention shows excellent application prospects in fermented plant-based feeds.

The invention relates to the technical field of plant culture, in particular to a callus induction culture medium and a cultivation method of a high-content condensed tannin sainfoin regenerated plant. The invention provides application of a sainfoin OvLAR16 gene as shown in SEQ ID NO.1 in promoting synthesis of sainfoin condensed tannin. The OvLAR16 gene is transferred into sainfoin, and the content of condensed tannin in an obtained transgenic sainfoin regeneration plant is increased by 4.9 times compared with that of a wild type. The invention has important theoretical value and significance for cultivating high-quality forage grass, and has wide application prospect in plant molecular breeding.

The present invention discloses a concentrate supplement for preventing ruminal tympany in cattle and sheep and a preparation method thereof, belonging to the technical field of animal feeds. The raw materials of the concentrate supplement for preventing ruminal tympany in cattle and sheep are counted by mass parts and include: 30.2 - 40.5 parts of corn, 15 - 20 parts of sorghum, 14 - 20 parts of brown rice, 12 - 25 parts of heat-treated soybean meal, 0.2 - 1 part of condensed tannin, 0.1 - 0.05 part of compound soluble non-starch polysaccharide enzyme, 1.2 - 1.8 parts of calcium carbonate, 1.5 - 2.6 parts of sodium bicarbonate, 0.3 - 0.5 part of NaCl, and 0.3 - 0.5 part of premix. The designed concentrate supplement of the present invention has lower contents of soluble non-starch polysaccharides, rumen-degradable protein, and magnesium ions, and higher contents of tannin, soluble non-starch polysaccharide enzyme, and sodium ions, and can better prevent the problem of frothy ruminal tympany in goats caused by high-concentrate feeds.

A composition for forming a protective film for a wet etching solution for semiconductors, comprising: component (A): a film-forming component; component (B): a compound selected from the group consisting of a condensed tannin (b1) obtained by polymerizing a compound having a flavanol skeleton, a hydrolyzable tannin (b2) obtained by ester-bonding a sugar and an aromatic compound of gallic acid or ellagic acid, and a flavonoid (b3) derived from a compound having a flavanone skeleton structure; and component (C): a solvent.

This invention relates to the field of wine testing technology, specifically to a method for extracting condensed tannins from dry red wine. First, the treated dry red wine is subjected to solid-phase extraction to obtain a condensed tannin extract. Then, the condensed tannin extract is analyzed by high-performance liquid chromatography (HPLC). The eluent for solid-phase extraction is a mixed solution of acetone, water, and acetic acid. In the mixed solution, the volume ratio of acetone, water, and acetic acid is 60–90:9.5–39.5:0.5. The condensed tannin extract contains condensed tannins of various degrees of polymerization. This method can specifically identify and detect condensed tannins of various degrees of polymerization, and can also obtain the content of condensed tannins at each degree of polymerization. The analytical results are good, achieving the enrichment and detection of condensed tannins with different degrees of polymerization. The operation is simple and highly reproducible.

A synergistic flame retardant composition comprising a phenolic compound comprising condensed tannin, hydrolysable tannin, lignin, cardanol, quercetin, catechin, epicatechin, anthocyanidin, catechol, dopamine, hydroxytyrosol, adrenaline, 4-hydroxyphenylacetic acid, gallic acid, digallic acid, methyl gallate, ellagic acid, phloroglucinol, hexahydroxydiphenic acid, luteic acid, casuarictin, or a combination thereof; and a phosphorus-containing compound comprising a C5-7 carbocyclic polyol substituted with at least one phosphate group.

The application discloses a QfAP1 gene and application of an encoded protein thereof in regulating synthesis of condensed tannin in fruits. The QfAP1 gene sequence is shown in (a) or (b): (a) a nucleotide sequence shown in Seq ID No:1; (b) a nucleotide sequence encoding an amino acid sequence homologous to an amino acid sequence shown in SEQ ID NO:2 by more than 70%. The application is to reduce the synthesis of condensed tannin in fruits by inhibiting the expression of the QfAP1 gene or to increase the synthesis of condensed tannin in fruits by overexpressing the QfAP1 gene. The content of condensed tannin in white oak fruits can be reduced by inhibiting the expression of the QfAP1 gene, and then the astringency is reduced, so that the white oak fruits can be directly eaten.

The invention relates to an antibacterial real silk fabric and a preparation method thereof, and belongs to the technical field of functional fabrics. The preparation method comprises the following steps: S1, dispersing a zeolite imidazate skeleton structure material in a rhizoma dioscoreae cirrhosae extract solution, stirring, centrifuging and drying to obtain a zeolite imidazate skeleton / rhizoma dioscoreae cirrhosae extract; s2, the real silk fabric is soaked in the zeolite imidazate framework / dioscorea cirrhosa extract finishing liquid for finishing, and the antibacterial real silk fabric is obtained. A condensed tannin compound is encapsulated in a zeolite imidazate framework structure material, and the zeolite imidazate framework structure material releases the condensed tannin compound to react with the real silk fabric under a weak acid condition; the condensed tannin compound can be combined with protein in bacterial cells through hydrogen bonds, hydrophobic interaction and covalent bonds or can be used for effectively inhibiting the growth of bacteria by destroying cell membranes of the bacteria; in addition, zinc ions released by the SL (at) ZIF-8 have an antibacterial effect, and the antibacterial performance of the real silk fabric is synergistically enhanced.

The invention provides a preparation method of an areca-nut core extract, which comprises the following steps: crushing areca-nut cores through a crusher, mixing the crushed areca-nut cores with water, heating and stirring in cooperation with a stirrer, and subsequently extracting to obtain an areca-nut extracting solution. Compared with the prior art, the method has the following beneficial effects that the water-phase material is subjected to refined filtration and macroporous resin adsorption so as to further remove arecoline dispute to body functions, condensed tannin with strong astringent taste and introduced sweetening agent components, and then the collected column passing liquid is subjected to refined filtration and ultrafiltration, so that the content of the astringent and the content of the sweetening agent components are further removed. The method can be used for removing possibly introduced resin scraps, macromolecular impurities polymerized in process treatment and the like, and controlling the pore size of a fine filtration and ultrafiltration membrane, so that macromolecular polysaccharide, protein, pectin and other components influencing the clarity of the extract can be more favorably removed.

The invention provides a roxburgh rose enzyme beverage, the roxburgh rose enzyme beverage is prepared by fermenting roxburgh rose, the total acid content in the roxburgh rose enzyme beverage is 4-5g / L, and the condensed tannin content is 1000-1200 mg / 100g. The roxburgh rose enzyme beverage provided by the invention is obtained through a specific fermentation process, and physicochemical and sensory detection results show that sour, sweet and bitter taste are significantly different before and after fermentation. Specifically, after fermentation, the sour taste score is reduced from 24.95 to 19.43, the bitter taste score is reduced from 23.10 to 18.62, meanwhile, the sweet taste score is obviously increased from 8.52 to 12.19, the bad smell of part of roxburgh rose juice is obviously improved through fermentation, and the roxburgh rose juice becomes a popular enzyme beverage.

The invention discloses a traditional Chinese medicine extract for treating aflatoxin poisoning disease of ducklings and a preparation method and application of the traditional Chinese medicine extract, and relates to the field of traditional Chinese veterinary medicines, the traditional Chinese medicine extract is a radix paeoniae alba tannin extract, the radix paeoniae alba tannin extract comprises the following components: 62-63% of condensed tannin and 37-38% of hydrolyzed tannin; the high-purity tannin substances are extracted from radix paeoniae alba decoction pieces through a specific technology of'cold soaking-gelatin precipitation '. The traditional Chinese medicine extract provided by the invention can effectively relieve the toxic effect of aflatoxin on ducklings under the condition of low dosage, obviously relieve liver injury and improve liver function indexes, so that normal growth and development of the ducklings are guaranteed, and the survival rate and the production performance are improved.

The invention discloses an application of a QfAP1 gene and an encoded protein thereof in regulation and control of expression of a target gene 4CL. The target gene 4CL is a key enzyme gene in regulation and control of a synthetic route of condensed tannin in fruits. The QfAP1 gene sequence is as shown in (a) or (b): (a) a nucleotide sequence as shown in Seq ID No: 1; and (b) a nucleotide sequence encoding an amino acid sequence having at least 70% or more homology with the amino acid sequence as shown in SEQ ID NO: 2. According to the application, expression of a target gene 4CL is reduced by inhibiting expression of the QfAP1 gene; or the expression of the target gene 4CL is increased by overexpressing the QfAP1 gene. According to the application of the QfAP1 gene and the encoded protein thereof in regulation of expression of the target gene 4CL, regulation of a key enzyme gene in a condensed tannin synthesis route can be realized, and a new route is provided for regulation of condensed tannin synthesis. Preferably, the expression of the target gene 4CL can be reduced by inhibiting the expression of the QfAP1 gene, so that the content of condensed tannin in the white oak fruits is reduced, the astringency of the white oak fruits is reduced, and the white oak fruits can be directly eaten.

The invention relates to the technical field of wine brewing, in particular to a brewing method for producing black rice wine by an anthocyanin extraction and reduction process, which comprises the following steps of: adding edible grade sulfurous acid or potassium metabisulfite and condensed tannin into raw black rice wine which meets specific quality indexes and is used as a solvent to prepare an extraction solvent; the method comprises the following steps: carrying out negative pressure extraction on black rice under specific conditions, freezing to remove fat, and carrying out multi-stage filtration to obtain a high-cleanliness anthocyanin extracting solution; the black rice subjected to anthocyanin extraction is subjected to wall breaking and crushing, liquid cooking and gelatinization, liquefaction, saccharification, pure fermentation, squeezing, wine decoction and other procedures to prepare raw wine, and finally an anthocyanin extracting solution is added in proportion in the wine storage link to complete reduction. The problems of high loss rate of anthocyanin in the black rice, difficulty in cooking and gelatinization, low wine yield and the like in the traditional process are solved, the utilization rate of the anthocyanin reaches 85% or above, the wine yield is increased by 3%-5%, energy and water resources are saved, sewage discharge is reduced, the color, the nutrition and the taste of the black rice wine are improved, and automatic development of the industry is promoted.

This invention relates to the field of chemical analysis technology, specifically to a method for detecting oxidized condensed tannins in red wine. The test solution containing oxidized condensed tannins is divided into a treatment solution and a blank control solution. An acidic depolymerization reagent is used to depolymerize the treatment solution, yielding a depolymerized solution. Ultra-high performance liquid chromatography-triple quadrupole mass spectrometry (UHPLC-MS / MS) is used to detect the depolymerized solution and the blank control solution separately, and the content of oxidized condensed tannins is calculated. The acidic depolymerization reagent includes menthol furan and hydrochloric acid, with the concentration of menthol furan being 15-25 mmol / L and the concentration of hydrochloric acid being 0.4-0.6 mol / L. This method is the first to achieve simultaneous qualitative and quantitative analysis of the constituent units of natural, quinone-oxidized, and acetaldehyde-oxidized condensed tannins. It has the advantages of being non-toxic and odorless, suitable for routine laboratory use, and provides an effective method for predicting the degree of oxidation and aging potential of wine.

The application provides a hawthorn condensed tannin polymer and a preparation method and application thereof. The hawthorn condensed tannin polymer is extracted from hawthorn pulp, and the hawthorn condensed tannin polymer comprises a mixture of dimers, trimers, tetramers, pentamers, hexamers, heptamers, octamers, nonamers, decamers, undecamers, dodecamers, tridecamers, tetradecamers, pentadecamers, hexadecamers, heptadecamers and octadecamers of epicatechin shown in formula (I). Wherein, n is a positive integer between 2 and 18, and at least one of the dimers, trimers, tetramers, pentamers, hexamers, heptamers, octamers, nonamers, decamers, undecamers, dodecamers, tridecamers, tetradecamers, pentadecamers, hexadecamers, heptadecamers and octadecamers comprises a B-type procyanidin polymer obtained by connecting epicatechin structural units through C4-C8 or C4-C6.

The application relates to the feed technology field and discloses a low-protein amino acid balanced daily feed for cashmere goats and a preparation method thereof. The daily feed is prepared from 11-20 parts of crystal amino acid, 10-20 parts of feed-grade montmorillonite, 0.5-1.5 parts of anhydrous citric acid, 5-12 parts of condensed tannin, 1-3 parts of zinc sulfate heptahydrate, 10-25 parts of calcium lignosulfonate and 910-950 parts of basic low-protein daily feed powder according to weight proportions. During preparation, the crystal amino acid is mixed with the montmorillonite, and the self-assembly coating is completed by adding citric acid aqueous solution and condensed tannin in sequence, the zinc sulfate solution is sprayed to in-situ synthesize a hybrid core premix, finally, the basic powder and the calcium lignosulfonate are mixed, and the daily feed is prepared by steam conditioning and extrusion shaping. The daily feed is prepared by using intercalation, coordination crosslinking and heat sealing, the over-rumen protection rate and the processing retention rate of the amino acid can be improved, and the amino acid balance under the low-protein condition is realized.

An herbal supplement for reducing bloating, dysbiosis, diarrhea, constipation and / or weight gain in a human subject is disclosed. The herbal supplement comprises an herbal composition comprising condensed tannin; an herbal composition comprising a triterpenoid saponin or an anti-spasmodic agent; and one or more probiotics in endospore form, wherein the supplement is formulated to reduce bloating, dysbiosis, diarrhea, constipation and / or weight gain in a human subject.

The present invention relates to the field of winemaking technology, and more specifically, to a method for improving the color stability of red wine. After red grapes are added to a fermentation tank, white grape seeds are added to the fermentation tank, followed by cold maceration and fermentation to produce red wine. This method, using white grape seeds as a secondary coloring ingredient, provides an additional source of flavanols and condensed tannins for the red wine. This method effectively mitigates the rapid loss of red hue during aging and significantly deepens the color of red wine, particularly red hues. The white grape seeds used in this method are those from the skins and pomace obtained from the brewing of dry white wine. This method not only eliminates the need to obtain white grape seeds but also allows for the reuse of the skins and pomace produced during the white wine brewing process.

The invention discloses an application of a QfAP1 gene and an encoded protein thereof in regulation and control of expression of a target gene PAL. The target gene PAL is a key enzyme gene in regulation and control of a synthetic route of condensed tannin in fruits. The QfAP1 gene sequence is as shown in (a) or (b): (a) a nucleotide sequence as shown in Seq ID No: 1; and (b) a nucleotide sequence encoding an amino acid sequence having at least 70% or more homology with the amino acid sequence as shown in SEQ ID NO: 2. According to the application, expression of a target gene PAL is reduced by inhibiting expression of the QfAP1 gene; or the expression of the target gene PAL is increased by overexpressing the QfAP1 gene. According to the application of the QfAP1 gene and the encoded protein thereof in regulation and control of expression of a target gene PAL, regulation and control of a key enzyme gene in a condensed tannin synthesis route can be realized, and a new route is provided for regulation and control of condensed tannin synthesis. Preferably, the expression of the target gene PAL can be reduced by inhibiting the expression of the QfAP1 gene, so that the content of condensed tannin in the white oak fruits is reduced, the astringency of the white oak fruits is reduced, and the white oak fruits can be directly eaten.

An herbal supplement for reducing bloating, dysbiosis, diarrhea, constipation and / or weight gain in a human subject is disclosed. The herbal supplement comprises an herbal composition comprising condensed tannin; an herbal composition comprising a triterpenoid saponin or an anti-spasmodic agent; and one or more probiotics in endospore form, wherein the supplement is formulated to reduce bloating, dysbiosis, diarrhea, constipation and / or weight gain in a human subject.

Title: Composition for preserving a container, in particular used for wine aging The present invention relates to a powder for preserving a wine container, in particular used for winemaking and / or wine aging, comprising as active substances: between 10.0% and 50.0% by weight of hydrolyzable tannins, and between 15.0% and 90.0% by weight of condensed tannins, each percentage being expressed by weight relative to the total weight of the composition. The present application also relates to a composition in liquid form for preserving a wine container, in particular used for winemaking and / or wine aging, comprising as active substances: between 5.0% and 20.0% by weight of hydrolyzable tannins, and between 10.0% and 40.0% by weight of condensed tannins, each percentage being expressed by weight relative to the total weight of the composition in liquid form.