Pine Bark Extraction Patents **![](0logo.gif) [rexresearch.com](../index.htm)** --- **PINE BARK EXTRACTION PATENTS** --- **RU2008143857A****METHOD OF PROCESSING PINE TREE BARK** FIELD: chemistry. SUBSTANCE: method of processing pine tree bark involves extraction of the bark using a non-polar solvent with extraction of coniferous wax, subsequent extraction of pectin from the bark and treatment of the bark residue in activated carbon. After extraction of coniferous wax, the bark residue is extracted with 15% aqueous ethanol at boiling temperature for 0.5 **KR100817876B1****ISOLATION PROCESS FOR PROANTHOCYANIDIN FROM THE BARK OF PINE TREE** ...An isolation process of proanthocyanidin from the bark of pine tree is provided to improve purity of proanthocyanidin by performing... and cosmetics. An isolation process of proanthocyanidin from the bark of pine tree comprises the steps of: extracting the bark... tree bark to remove precipitates; concentrating the filtered pine tree bark extract; and extracting the concentrate of pine tree bark ... **CN104974198A****Process of extracting tannin from pine bark** The present invention discloses a process of extracting tannin from pine bark. The method comprises the following steps of: (1) pre-treatment: grinding naturally dried pine bark, and sieving the ground pine bark by using a 100 mesh sieve, so as to obtain pine bark powder for later use; (2) microwave-assisted extraction: weighing out pine bark powder, putting the ... **CN1613854A****Extraction of oligomeric anthocyanin from pine bark** Extraction of oligomeric protocyanidin from pine barks is carried out by: extracting it from raw pine bark powders with a... **CN105456308A****Masson pine bark extract for treating squamous cell lung carcinoma as well as preparation method and composition of masson pine bark extract** ...The invention discloses a masson pine bark extract for treating squamous cell lung carcinoma as well as a preparation method...) smashing masson pine bark till the size reaches 200-800 meshes, thus preparing masson pine bark powder; (2) at 4... to prepare masson pine bark water extract solution; and (4) drying the masson pine bark water extract solution. The masson ... **CN110538204A** **Method for extracting phenolic substances from pine bark** The invention relates to a method for extracting phenolic substances from pine bark. The method comprises the following steps: (1... degraded through biological enzymolysis; efficient extraction of the active ingredients of the pine bark is realized through cooperation of first-time water extraction and second-time alcohol extraction. The extraction method has the advantages of simple process, no pollution, high ... **CN105175380A****Method for preparing Yunnan pine bark procyanidine** ...The invention discloses a method for preparing Yunnan pine bark procyanidine. The method comprises steps: firstly, Yunnan pine barks are.... Through the enzyme-high voltage pulse electric field auxiliary extraction method, the extraction rate and the yield of Yunnan pine... used, resources are saved, and pollution discharge is reduced. The extraction rate of the prepared Yunnan pine bark procyanidine is ... **KR100908931B1****EXTRACTION METHOD FOR THE EXTRACT CONTAINING PROANTHOCYANIDIN FROM PINE BARK USING ALKALI AS SOLVENT** ...A method for extracting an extract containing proanthocyanidin from bark of pine tree using alkali is provided to obtain an.../and fishes. A method for extracting an extract containing proanthocyanidin from a bark of pine tree comprises: a step of pretreating the bark with low frequency, electric filed or magnetic field; a step of adding the bark with 0.095-0.4 ... **CN1176919C****Separation and extraction process of oligomer proanthocyanidin from pine bark** The separation and extraction process of oligomer proanthocyanidin from pine bark includes the steps of: pre-treatment, extraction, recovering solvent, concentration, solid-liquid separation, concentration, counter current extraction, concentration, drying, sterilizing and packing. During the extraction, water and ethyl acetate are used as solvent. The said process has high extraction rate, low cost, high product yield and quality, product OPC ... **CN101708194A****Process for manufacturing pine bark extract** ...The invention relates to a process for manufacturing pine bark extract, belonging to the technical field of plant extract. The process comprises the following steps: adding 8 times of 50-70 percent of ethanol into a pine bark raw material... the pine bark extract. The process adopts multiple extraction and multiple stage centrifugation, and adopts a rough extraction desorbing method ... **US2003059488A1****Bioflavanoid-rich potent extract and process for the extraction from white oak bark and pine bark** A bioflavanoid rich potent extract and process for the extraction from oak bark and pine bark that is highly enriched... **WO2006090953A1****EXTRACTION METHOD FOR ANTIOXIDANTS FROM PINE TREES USING NATURAL SOLVENTS AND ANTIOXIDANT EXTRACTS THEREBY** ...Disclosed herein is a method of extracting a natural antioxidant from the bark of pine trees using a natural solvent... from the bark of pine trees using an alcohol solution as a natural solvent, to obtain an antioxidant extract; and..., and is environmentally friendly and economical, thus providing a natural antioxidant having high antioxidant activity from the bark of pine trees. ... **CN103755676A****Method for purifying oligomeric proanthocyanidin in pine bark** ... pine bark by using combination of endoglucanase and microwaves and membrane separation technology, with water used as an extraction solvent. The method has following main characteristics: water is used as the extraction solvent; microwave extraction accelerates an extraction speed; to... plurality of technologies enables extraction time to be substantially reduced, an extraction speed to be increased and an extraction period ... **KR20130084384A****METHOD FOR EXTRACTING THE BARK OF A PINE USING ACCLERATED SOLVENT EXTRACTER** ...PURPOSE: An extracting method of a pine tree bark extract using an accelerated solvent etraction is provided to improve extracting... method of a pine tree bark extract comprises the step of: processing a subcritical solvent in pine tree bark. The... forma erecta. [Reference numerals] (AA) Comparing rate of the bark of pine tree extract; (BB) Extraction yield (%); (CC) Hot ... **US2009124818A1****METHOD OF PRODUCING PROANTHOCYANIDIN-CONTAINING MATERIAL** ...The method for producing proanthocyanidin-containing product of the present invention comprises the steps of providing a pine bark as a starting material, extracting the pine bark with at least one of water and an organic solvent, and treating the... to one part by weight of the pine bark, and performing extraction at 80 to 85A deg C. for one ... **CN101759727A****Nano-scale pine bark extract and preparation method thereof** ...The invention relates to a method for extracting nano-scale proanthocyanidin oligomers from pink bark. The production technical process of the method comprises: raw material treatment, filtrate extraction treatment, concentration treatment, high-efficiency countercurrent extraction treatment, dilution treatment, water dissolution... the method, water is used as an extraction solvent, ethyl acetate is used as an extraction solvent, and after weakly ... **GB130010A****Improved Process for Obtaining Tanning Material from Pine-tree Bark.** In obtaining tanning-extract from pine-tree bark, the resin is removed before lixiviation of the bark. The solvent employed for the resin must have a boiling-point of slightly over 100a1 C. at atmospheric pressure, so that drying of the water in the bark can be carried on simultaneously with ... **CN102093328A****Method for enriching and purifying procyanidin in pine bark** ... pine bark. The method is characterized in that an intermittent distillation and macropore adsorbent resin coupling technology is used to..., extraction is convenient and quick, raw material source is rich, production cost is low, separation effect is obvious, extraction purity... achieved, and the defects of low conventional extraction rate and low extraction purity are overcome. In the method, the macropore ... **CN106632205A****Method for extracting proanthocyanidins from Yunnan pine bark** The invention discloses a method for extracting proanthocyanidins from Yunnan pine bark. The method comprises the following steps: (1) crushing Yunnan pine bark, and then adding cellulase and acetic acid-sodium acetate buffer solution to carry out enzymolysis on the crushed bark; (2) carrying out ultrasonic treatment in an enzymolysis process; (3) adding an ethanol solution into the enzymatic hydrolysis ... **CN107523092A****Preparation method of natural red pine bark dye** ...The invention provides a preparation method of a natural red pine bark dye. The preparation method includes the steps: (1... to dry the barks for 8-15 hours; (2) mechanically crushing the dried red pine barks to reach powder of 30-60 meshes, adding the crushed red pine bark powder into ethanol aqueous solution with volume ratio of 45% ... **RU2093014C1****PINE TAPPING METHOD** ...FIELD: forestry, extraction of oleoresin and juice of conifer and other kinds of trees. SUBSTANCE: method involves visual selection of... process on tree trunks; marking sink holes in zones of stimulating physiological process, with inhibition zones being left for bark ... **FR2810038A****Method for the extraction of tannin from pine tree bark and for the preparation of tannin-phenol-formaldehyde adhesives for the production of plywood for external use** A method for the extraction of tannins (I) from the bark of Pinus pinaster and for obtaining tannin-phenol-formaldehyde... **RU2223776C2****METHOD FOR PRODUCING OF ESSENTIAL OIL FROM CONIFEROUS PLANT BARK** ...FIELD: forest, pharmaceutical and chemical industry, medicine and other branches of industry, in particular, extraction of essential oils from plant...-0.15 MPa for 8-10 hours. Plant material is bark of Khingam fir, Dahurian larch, and Korean cedar pine ground ... **CN102432582A****Preparation method of proanthocyanidin** The invention discloses a preparation method of proanthocyanidin. In the method, grape seed, pine bark, purple potato or any other plant with high proanthocyanidin content is used as a raw material, an ethanol aqueous solution is used as an extraction solvent, and a double water phase extraction method is utilized to efficiently prepare proanthocyanidin from a crude proanthocyanidin extract. The ... **YU14484A****PROCESS FOR EXTRACTION OF CARBON HYDRATE PART OF PINE BARK WATER SOLLUTION FROM POLYPHENOLIC PART** **GB818034A****Process for the production of tanning extracts** ... examples, bark is extracted by heat in a battery of extractors worked on the counter-current system, sodium hydroxide (Examples... 6) being added to the extractor containing fresh bark. Pectins are removed in Example 3 by preliminary cold extraction with... extraction of pine bark, quebracho, mimosa bark, oak wood, and chestnut wood and the product is particularly useful in producing ... **CN108344609A****Thin layer detection method for quickly identifying true and false grape seed extract** ... the grape seed extract is mixed with pine bark, cutch and arachis hypogaea. The method comprises the following steps that step 1, the grape seed extract, arachis hypogaea extract, cutch extract, pine bark extract and to-be-identified grape seed extract are taken to be crushed and sieved, and mixed with ethyl alcohol, and ultrasonic extraction is carried out to ... **NZ515182A****Extraction of biologically active compounds from plant material using acid and antioxidant** ...Disclosed are methods of extraction of biologically active compounds from a botanical material including the steps of: A) Reducing the...; Hawthorn; Hops; Passion Flower; Pine Bark; Red Clover; Olive Leaf; currants; berries and a combination thereof. ... **CN107266408A****Method used for extracting extracted product rich in proanthocyanidins from plant raw materials** ... belongs to the field of effective part extraction. According to the method, a urea composite solution is used for extracting... extraction and enrichment of oligomeric proanthocyanidins; and organic phase vacuum concentration, vacuum drying, or spray drying are adopted so as... the raw material, the proanthocyanidins yield ranges from 6 to 6.5%; when pine bark is taken as the raw ... **GB190202303A****Improvements in or relating to the Extraction of Tanning Substances and Apparatus therefor.** ... such as oak bark, pine bark, quebracho wood, &c. Fig. 1 shows in vertical section an apparatus for the extraction of easily-soluble tanning materials, such as those contained in oak bark. The apparatus comprises a rotary perforated drum b... a 1 , when necessary. The centrifugals are filled with fresh tanning-materials in turn, the water always entering the one in which the extraction has proceeded furthest. ... ---