Pretreatment steam extraction method for rosin, arabinogalactan and dihydroquercetin in larch wood powder

Abstract

The invention relates to a pretreatment steam extraction method for rosin, arabinogalactan and dihydroquercetin in larch wood powder. The method comprises the following steps of S1, water immersion pretreatment, wherein the larch wood powder is subjected to water immersion treatment, filtration is conducted to obtain a filtrate containing arabinogalactan, and the moist larch wood powder is reserved; S2, steam extraction, wherein steam with the pressure of 0.2 MPa is added to the moist larch wood powder treated in the first step for steam extraction, and filtration is conducted to obtain an extraction solution; S3, concentration and drying of the extraction solution, wherein the extraction solution of the third step is concentrated and dried to obtain an extract containing rosin and dihydroquercetin; S4, recrystallization, wherein the extract containing the rosin and dihydroquercetin is recrystallized to obtain the refined rosin and dihydroquercetin separately. The method has the advantages that the material is directly used without being dried, the method is economical and environmentally friendly, many products are generated, the yield is high, solvents are not needed in all the processes, and the method is low in cost and suitable for industrial large-scale production.

Description

Technical field

[0001] The invention relates to a pretreatment steam method for extracting pine resin, arabinogalactan and dihydroquercetin from larch wood powder, and belongs to the technical field of flavonoid extraction. Background technique

[0002] Turpentine is an important raw material for chemical industry, mainly used to make raw materials for paint. Arabinogalactan can reduce the particle size of oil-in-water emulsion particles and increase the proportion of small-size emulsion particles. It has excellent emulsification and dispersion capabilities and can be used as skin conditioners, moisturizers, thickeners, and glues. Coagulant, film-forming agent, etc., added to cosmetics as a film forming agent, which can slow down the loss of water.

[0003] Dihydroquercetin has a strong antioxidant capacity, can effectively eliminate excess free radicals from the human body, promote capillary permeability, its antioxidant properties are better than many existing antioxidants, and ...

Examples

Embodiment 1

[0039] 100000g of Siberian larch wood powder containing 20% ​​water was added to 1000L of purified water, stirred and leached at room temperature for 5 hours, filtered out the filtrate containing arabinogalactan, and freeze-dried the filtrate to obtain arabinogalactan. The water-washed larch wood powder is first added with a steam pressure of 0.2MPa and a temperature of 125°C°, steamed for 2h, filtered to extract the distillate, and concentrated to an extract under reduced pressure (minus 0.8 atm) at 50°C to obtain 4200g of extract. The concentrated extract was suspended and treated with 95°C, 50L purified water. After the extract is basically dissolved, it is filtered at a temperature above 60°C. After filtering out the water-insoluble matter, it is allowed to stand, cooled to room temperature, and the precipitated precipitate is filtered, and then left to stand until no precipitate is precipitated. Combine the solutions, use 95°C and 30L purified water for another suspension ...

Embodiment 2

[0041] 100kg of Siberian larch wood powder with 20% water content was added to 1500L of purified water, stirred and leached at room temperature for 6 hours, and the filtrate containing arabinogalactan was filtered out. After spray drying the filtrate, arabinogalactan is obtained. The washed larch wood powder is first added with a steam pressure of 0.2 MPa and a temperature of 130° C., steamed for 2.5 hours, filtered to extract the distillate, and concentrated to an extract at 50° C. at minus 0.8 atmosphere to obtain 4250 g of extract. The concentrated extract was suspended and treated with 95°C, 50L purified water. After the extract is basically dissolved, it is filtered at a temperature above 60°C. After filtering out the water-insoluble matter, it is allowed to stand, cooled to room temperature, and the precipitated precipitate is filtered, and then left to stand until no precipitate is precipitated. Combine the solutions, use 95°C and 30L purified water for another suspensi...

Technical field

[0001] The invention relates to a pretreatment steam method for extracting pine resin, arabinogalactan and dihydroquercetin from larch wood powder, and belongs to the technical field of flavonoid extraction. Background technique

[0002] Turpentine is an important raw material for chemical industry, mainly used to make raw materials for paint. Arabinogalactan can reduce the particle size of oil-in-water emulsion particles and increase the proportion of small-size emulsion particles. It has excellent emulsification and dispersion capabilities and can be used as skin conditioners, moisturizers, thickeners, and glues. Coagulant, film-forming agent, etc., added to cosmetics as a film forming agent, which can slow down the loss of water.

[0003] Dihydroquercetin has a strong antioxidant capacity, can effectively eliminate excess free radicals from the human body, promote capillary permeability, its antioxidant properties are better than many existing antioxidants, and ...

Examples

Embodiment 1

[0039] 100000g of Siberian larch wood powder containing 20% ​​water was added to 1000L of purified water, stirred and leached at room temperature for 5 hours, filtered out the filtrate containing arabinogalactan, and freeze-dried the filtrate to obtain arabinogalactan. The water-washed larch wood powder is first added with a steam pressure of 0.2MPa and a temperature of 125°C°, steamed for 2h, filtered to extract the distillate, and concentrated to an extract under reduced pressure (minus 0.8 atm) at 50°C to obtain 4200g of extract. The concentrated extract was suspended and treated with 95°C, 50L purified water. After the extract is basically dissolved, it is filtered at a temperature above 60°C. After filtering out the water-insoluble matter, it is allowed to stand, cooled to room temperature, and the precipitated precipitate is filtered, and then left to stand until no precipitate is precipitated. Combine the solutions, use 95°C and 30L purified water for another suspension ...

Embodiment 2

[0041] 100kg of Siberian larch wood powder with 20% water content was added to 1500L of purified water, stirred and leached at room temperature for 6 hours, and the filtrate containing arabinogalactan was filtered out. After spray drying the filtrate, arabinogalactan is obtained. The washed larch wood powder is first added with a steam pressure of 0.2 MPa and a temperature of 130° C., steamed for 2.5 hours, filtered to extract the distillate, and concentrated to an extract at 50° C. at minus 0.8 atmosphere to obtain 4250 g of extract. The concentrated extract was suspended and treated with 95°C, 50L purified water. After the extract is basically dissolved, it is filtered at a temperature above 60°C. After filtering out the water-insoluble matter, it is allowed to stand, cooled to room temperature, and the precipitated precipitate is filtered, and then left to stand until no precipitate is precipitated. Combine the solutions, use 95°C and 30L purified water for another suspensi...

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