108 results about "Condensed tannin" patented technology

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 invention belongs to the technical field of materials and provides cellulose / tannin hydrogel. The cellulose / tannin hydrogel is a product which is obtained by adding a cross-linking agent into a mixed liquid of tannin and cellulose to perform cross-linking and immobilization reaction. A preparation method of the cellulose / tannin hydrogel comprises the following steps: (1) dissolving the cellulose into a solvent which consists of urea, alkaline and water or thiourea, alkaline and water at a low temperature to obtain a cellulose liquid; (2) adding tannin into the cellulose liquid to obtain a mixture I, putting the mixture I into an ice bath for ultrasonically dispersing uniformly to obtain a mixed liquid of tannin and cellulose; and (3) adding the cross-linking agent into the mixed liquid obtained in the step (2) and performing cross-linking and immobilization reaction at the same time to obtain the cellulose / tannin hydrogel. According to the cellulose / tannin hydrogel and the preparation method of the cellulose / tannin hydrogel disclosed by the invention, the cellulose is taken as an immobilization carrier, and tannin, especially condensed tannin with relatively good stability is fixed to the cellulose by adopting a homogeneous reaction way, so that the tannin is immobilized and processed into material so as to obtain a gel adsorbent with good performance, and thus, the cellulose / tannin hydrogel can be widely applied to water treatment.

This invention relates to a binder composition comprising condensed tannin and furfuryl alcohol. The composition can be used to prepare foundry mixes. The foundry mixes are prepared by mixing the composition with an acid or salt of an acid. The foundry mixes are then shaped into molds or cores and cured by heating or by the no-bake process with stronger acid curing catalysts. The molds and cores are used in casting metal articles.

The invention discloses a method for preparing persimmon tannins with high micromolecular tannin content from persimmons. The method comprises the steps of raw material treatment, high-pressure micro-jet ultrafine crushing treatment, fermentation treatment, enzymolysis, microfiltration, ultrafiltration and drying. According to the method, a production process is improved, so that extraction time is shortened, the yield of the product is increased, the content of condensed tannins with molecular weight of 10,000-15,000 is ensured, and in addition, the content of low molecular weight tannins with molecular weight of 1,700 is also ensured.

The invention discloses a degraded condensed tannin modified phenolic resin wood adhesive and a preparation method thereof. The method comprises the following steps that: furan and derivatives thereofserve as nucleophilic reagents, and degradation and activation of condensed tannin are achieved under an acidic condition; and the degraded and condensed tannin, phenol, a formaldehyde solution, an alkaline solution, polyethyleneimine and distilled water are subjected to stirring and reaction, so that the degraded and condensed tannin modified phenolic resin wood adhesive can be obtained. The furan and derivatives thereof are used as the nucleophilic reagents, the condensed tannin is degraded under the assistance of acid; and therefore, the degradation and activation efficiency of the tanninis high, and the degradation speed of the tannin is high; a resin preparation process is simple; the operability of the method is high; the industrialization feasibility of the method is high; and thetannin modified phenolic resin wood adhesive with high bonding strength and high curing speed can be simply and effectively synthesized.

The invention discloses a compounded monascus haematochrome and a preparation method and application thereof. The compounded monascus haematochrome includes 0.01-50% by weight of condensed tannin and 0.01-50% by weight of monascus haematochrome. The preparation method of the compounded monascus haematochrome includes inoculating monascus in monascus culture medium containing cooking-sterilized rice, adding 0.1-50% by weight of the condensed tannin into the culture medium, culturing the monascus, drying and smashing culture obtained, and obtaining the monascus haematochrome containing the condensed tannin. Extracting the obtained monascus haemetaochrome by alcohol or acetone solution according to the conventional method and drying the same can obtain condensed extractants or powder extractants. Fading of the monascus haemetachrome, caused by sunlight, can be suppressed by the condensed tannin, and the compounded maonascus haemetachrome excellent in light fastness is produced.

The invention discloses a method for extracting persimmon tannin high in small molecular tannin content from persimmon. The method comprises the steps of raw material treatment, ultrahigh pressure treatment, ultrasonic treatment, enzymolysis, microfiltration, ultrafiltration and drying to obtain the finish product. According to the method for extracting the persimmon tannin high in small molecular tannin content from the persimmon, two extraction methods are combined, and therefore, the extraction time is shortened on one hand, and on the other hand, the product yield is obtained, the content of the condensed tannin having the molecular weight within the range of 10000-15000 is guaranteed, and meanwhile, the content of the tannin having the low molecular weight of 1700 is also guaranteed.

It is intended to provide a method for ensuring healthy fermentation using a yeast and the production of beer or low-malt beer having a rich flavor which comprises, in the case of producing beer or low-malt beer with the use of an early flocculating malt (i.e., a malt having an early flocculating factor of yeast), improving the fermentability of the early flocculating malt. In producing beer or low-malt beer with the use of the early flocculating malt, tannic acid is added to the wort and / or yeast to be used in the fermentation followed by the treatment with the tannic acid to thereby improvethe fermentability of the early flocculating malt. To improve the fermentability of the early flocculating malt in the process of producing beer or low-malt beer, tannic acid is added to the wort before adding the yeast, the fermented wort after adding the yeast or the yeast to be added to the wort and then the treatment is conducted. Preferable examples of the tannic acid to be used in the aboveprocess include gallotannin, tara tannin, gallic acid tannin (hydrolyzed tannin) and persimmon tannin (condensed tannin).

The present invention addresses the problem of providing: a composition which is capable of forming a biomass material with low energy consumption by simple processes and simple facilities; a molded body which is obtained from the composition; and a method for producing the molded body. A composition of the present invention is a composition which is cured by the application of heat and pressure and which is characterized by containing an element that is powdered or broken into small pieces, 8% by weight or more of condensed tannin and 8% by weight or more of a sugar that is selected from the group consisting of monosaccharides and oligosaccharides. Sucurose, glucose, fructose, maltose, xylose or lactose is preferable as the above-mentioned sugar. It is also preferable that the composition additionally contains an acid catalyst.

The invention discloses a method for cultivating a transgenic plant with increased content of isoflavone and condensed tannin and a special plasmid. The method for cultivating the transgenic plant with increased content of isoflavone and condensed tannin comprises the following steps: importing nucleic acid molecules for coding proteins A, nucleic acid molecules for coding proteins B and nucleic acid molecules for coding proteins C into a receiver plant, thereby obtaining the transgenic plant of which the content of isoflavone and / or condensed tannin is higher than that of the receiver plant. The experiment proves that the content of the isoflavone and / or condensed tannin in the transgenic plant obtained by the method provided by the invention is increased.

The invention provides method and compositions for the modulation of condensed tannin production in plants. The methods of the invention allow creation of plants having novel phenotypes. Increased expression of condensed tannins in plants may be used to increase the nutritional value of food plants for both human and animal consumption. Increased condensed tannin content also reduces the potential for bloat in animals fed certain forage plants low in condensed tannin content. The invention may also be used to modify plant pigmentation.

The invention provides method and compositions for the modulation of anthocyanin and proanthocyanidin production in plants. The methods of the invention allow creation of plants having novel phenotypes. Increased expression of anthocyanins and proanthocyanidins in plants may be used to increase the nutritional value of food plants for both human and animal consumption. Increased proanthocyanidin content also reduces the potential for bloat in animals fed certain forage plants low in condensed tannin content. The invention may also be used to modify plant pigmentation, and for nutraceutical and food colorant production.

This invention relates to refractory mixes produced by mixing a refractory material with an organic binder and heating to a temperature of typically from about 50° C. to about 100° C. to form a stable composite granulate. The refractor mixes comprise a major amount of a refractory material and a minor amount of a binder composition comprising (a) condensed tannin and (b) furfuryl alcohol. The refractory mixes are used to prepare shaped (e.g. bricks) and unshaped (e.g. blast furnace tap holes, troughs, and tundish liners) refractory products. The invention also relates to a process for preparing the refractory products using the refractory mixes.

The invention discloses a light rare earth ion absorbing material. The light rare earth ion absorbing material is prepared by the following primary raw materials: a carrier is 100 parts of a plant fiber (such as a wood fiber and a ramie fiber), an absorbing base is various kinds of condensed tannins (such as a oak tannin, a persimmon tannin and a pericarpium granati tannin). The light rare earth ion absorbing material comprises, by mass, 100-1000 parts of 0.8% oak tannin solution, or 100-1000 parts of 0.7% persimmon tannin solution, or 100-1000 parts of 0.8% larix gmelinli tannin solution, or 100-1000 parts of 0.5% pericarpium granati tannin solution. A cross linking agent is aldehydes (such as methanal and glutaraldehyde) or epoxy group (like dual-epoxy propane). The light rare earth ion absorbing material further comprises, by mass, 50-500 parts of 10% glutaraldehyde solution or 50-1000 parts of 3% dual-epoxy propane solution. The carrier and the absorbing base are cross linked in an acid solution, and an environmental-friendly material capable of absorbing the light rare earth ion is obtained. A maximum absorbing quantity is 427.0mg / g. Due to the fact that the light rare earth ion absorbing material only contains carbon (C), hydrogen (H) and oxygen (O) elements, after high temperature burning, recovering of the rare earth ion is convenient.