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Method for removing plasticizer from extract

A technology of plasticizers and extracts, applied in chemical instruments and methods, separation methods, chemical/physical processes, etc., can solve problems such as increasing the difficulty of sewage treatment, application restrictions, and increasing production costs

Active Publication Date: 2019-02-01
劲牌持正堂药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing methods for removing the plasticizer in the extract include: treating with a special macroporous resin, adsorbing the plasticizer on the resin and removing it, and the pretreatment and regeneration of the special resin for deplasticization requires the use of a large amount of acid, alkali, Ethanol, etc., not only increases the difficulty of sewage treatment, but also increases the production cost, and its application is greatly restricted

Method used

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  • Method for removing plasticizer from extract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Extraction: Put 300 kg of Epimedium medicinal materials into a 5400L multifunctional extraction tank, add 4800L of pure water to decoct, the decoction temperature is (98±2)℃, and the decoction time is (1.5±0.5) hours. The number of times of cooking is 3 times, the extracts are combined, and the disc centrifuge is used for high-speed centrifugation at a speed of 6000r / min or more to obtain the centrifugate. The centrifugate is required to be clear and transparent, and the precipitate after centrifugation is directly discharged.

[0033] (2) Concentration: the centrifuged extract is concentrated under reduced pressure using a double-effect concentrator, the concentration temperature is (65-80)°C, and the concentration is concentrated to a Brix value of (10±2)%.

[0034] (3) Adsorption: Transfer the concentrated solution to a stirring container, add 3.0 kg of activated carbon, and keep stirring at (50-60)°C for 0.5 hours.

[0035] (4) Separation: use ceramic membrane t...

Embodiment 2

[0039] (1) Dissolving: add 400L food-grade 25% ethanol in the 500L multifunctional extraction tank, drop into 20 kilograms of Epimedium extract (icariin content is 10.5%) that the plasticizer exceeds the standard under stirring, be warming up to 80 ℃ And keep warm and stir to dissolve, the dissolution time is 0.5 hours.

[0040] (2) Adsorption: Lower the temperature of the feed liquid to 50°C, add 0.5 kg of molecular sieve, and keep stirring at 50°C for 1 hour.

[0041] (4) Separation: filter with a sealed plate and frame filter press to collect the clarified liquid; and use 50 L of food-grade 25% ethanol for top washing to obtain a total of 420 L of feed liquid.

[0042] (5) Concentration: The clarified liquid obtained by ceramic membrane filtration is concentrated under reduced pressure with a double-effect concentrator at a concentration temperature of (60-80)°C to a relative density of 1.08-1.12.

[0043] (6) Drying: Use a spray dryer to dry, control the inlet air temperatu...

Embodiment 3

[0045] (1) Extraction: Put 600 kg of crushed peach kernels into a 5400L multifunctional extraction tank, add 4800L food-grade 50% ethanol for extraction, the extraction temperature is (80±2)°C, the extraction time is 1.5 hours, and the number of extractions is 3 times. Combine the extracts, and use a disc centrifuge for high-speed centrifugation at a speed of 6000 r / min or more to obtain a centrifuge. The centrifuge is required to be clear and transparent, and the precipitate after centrifugation is directly discharged.

[0046] (2) Adsorption: Transfer the extract to a container with stirring, add 6.0 kg of carbon molecular sieves, and keep stirring at (50-60)°C for 1.0 hour.

[0047] (3) Separation: filter with a ceramic membrane to collect the clarified liquid; and use 500 L of food grade 50% ethanol for top washing to obtain a total of 13500 L of feed liquid.

[0048] (5) Concentration: The clarified liquid obtained by ceramic membrane filtration is concentrated under redu...

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Abstract

The invention discloses a method for removing a plasticizer from an extract. The method comprises: carrying out pretreatment on a raw material with an excessive plasticizer, mixing with a plasticizeradsorption medium, and collecting the plasticizer-removed extract. According to the present invention, the method has characteristics of environmental friendliness, simple process, convenient operation, short cycle, high production efficiency and the like, and can effectively remove the plasticizer from the raw material with the excessive plasticizer so as to obtain the qualified product with theresidual plasticizer.

Description

technical field [0001] The invention relates to the technical field of extraction and separation, and in particular to a method for removing plasticizers in extracts. Background technique [0002] Extracts (including plant extracts and animal extracts) are solid powders, extracts or liquid extracts obtained from plants or animals as raw materials through extraction / enzymolysis, separation, purification, concentration, drying or not drying. After decades of development, the extract has been widely used in pharmaceuticals, health food, food and beverage, tobacco, cosmetic raw materials or auxiliary materials, and has an extremely important impact on people's lives. [0003] Plasticizer, also known as plasticizer, is a polymer material additive widely used in industry to enhance flexibility. There are many kinds of commercialized plasticizers, among which phthalates (PAEs) whose raw materials come from petrochemical industry are the most. Long-term exposure to PAEs in humans ...

Claims

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Application Information

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IPC IPC(8): B01D36/00B01D15/08B01D1/18
CPCB01D1/18B01D15/08B01D36/006B01D36/008
Inventor 李昌瑜马闯张露明韩娇陈志元孙代华
Owner 劲牌持正堂药业有限公司
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