Background technology:
Hericium erinaceus (Bull. Ex Fr.) Pers. has examines expensive food, pharmaceutical use, and multiple digestive tract diseases is all had better curative effect, can improve the human immunological competence.Chinese scholars shows that through years of researches it is the Hericium erinaceus (Bull. Ex Fr.) Pers. polysaccharide that bioactive chemical ingredients is arranged in the Hericium erinaceus (Bull. Ex Fr.) Pers. most.Along with going deep into that the Hericium erinaceus (Bull. Ex Fr.) Pers. pharmaceutical use is studied, the biological function of Hericium erinaceus (Bull. Ex Fr.) Pers. polysaccharide causes numerous scholars and developer's concern.The product that with the Hericium erinaceus (Bull. Ex Fr.) Pers. is main raw material is existing a lot, and these products all are to utilize the thing of carrying entirely of the mycelium of Hericium erinaceus (Bull. Ex Fr.) Pers. or sporophore to fill a prescription and make, but the preparation technology of these products relatively tradition is simple, wherein the content of polysaccharide is not very high.Because extraction process is simple, yield is not high, and content is lower, causes the production cost height, and efficacy effect is not remarkable.
The original extracting method of hedgehogt fungus crude polysaccharose is mainly taken over the traditional preparation process method of fungus polysaccharide, after hot water extraction, directly united extraction liquid concentrates, and uses alcohol precipitation again, after will precipitating the part centrifugation and going out, obtain the Crude polysaccharides goods by spraying drying after vacuum-drying or the water dissolution.Can only propose wherein water-soluble polysaccharide with single water extraction, also have the polysaccharide in a lot of cell walls to be difficult to extract.To further utilize Hericium erinaceus (Bull. Ex Fr.) Pers., prepare its deep processed product, have only and improve extraction process on the original basis, could prepare the hedgehogt fungus crude polysaccharose extract of high density.The deficiency that traditional water is carried alcohol precipitating method mainly contains: 1) the Crude polysaccharides yield of Ti Quing is low, and is not high to utilization ratio of raw materials; 2) many pectin substance class viscous substances are arranged in the Hericium erinaceus (Bull. Ex Fr.) Pers., increased the viscosity of extracting solution during extraction, be difficult for drying, loss was bigger when spray was done; 3) polysaccharide content is not high in the extract that obtains, and influences the performance of its efficacy effect.
Summary of the invention:
The present invention will provide a kind of extraction yield height, a kind of Hericium erinaceus (Bull. Ex Fr.) Pers. polysaccharide process for half bionic extracting preparing that polysaccharide content is also high.Core technology scheme of the present invention is: substitute simple water extraction with semi-bionic extraction, remove heavy metal residual in sticky contaminant and the water with flocculation sediment.
Concrete scheme is: Hericium erinaceus (Bull. Ex Fr.) Pers. with the extraction with aqueous solution of different pH three times, merged the concentrating under reduced pressure extracting solution and transfers pH to make flocculation agent to neutral back with chitosan, precipitate the heavy metal in non-polyose impurity of viscosity and the water source,
The centrifugal post precipitation of removing adds alcohol precipitation polysaccharide macromolecular functional component again.To precipitate part and fling to alcohol final vacuum drying, promptly obtain the hedgehogt fungus crude polysaccharose extract.
Extract yield and polysaccharide content behind enforcement the present invention and all more than 10%, see that following index is relatively than former method raising:
Can see that from last table state's exterior-applied liquid medicine carries alcohol deposition method extraction Hericium erinaceus (Bull. Ex Fr.) Pers. series products and the existing single water extraction extraction yield of China is similar, polysaccharide content then exceeds nearly one times.After using present technique, extract yield and not only improve more than 10%, and polysaccharide content exceeds nearly ten percentage points than external technology.Hedgehogt fungus crude polysaccharose extracts the raising of yield to the most direct influence that reduced production costs, and by this implementation of processes, the preparation cost of hedgehogt fungus crude polysaccharose is saved greatly.
Embodiment: existing combined process schematic flow sheet describes technological process in detail
1) the raw material decon cleans
Hericium erinaceus 1 raw material is removed impurity 2, and it is granular to carry out 3 one-tenth little of coarse reductions with the raw material Roughpulverizer, is dosed in the extractor.
2) water treatment
Drinking public water supply 4 carries out water treatment 5 by water treating device, removes the nuisance in the water sources such as heavy metal, organic matter.
3) weakly acidic water extracts
Regulate to extract water between the pH5-5.5 6 with weak acid, add in the extractor, add volume of water for dropping into 10 times of material.Heating, also controlled temperature is at 50-60 ℃, and atmospheric pressure state extracted 1 hour, and with sheet frame press filtration 7, filtrate 8 is put into storage tank.Residue 9 is stayed to do in the jar to extract for the second time and is used.
4) alkalescent water extracts
The treating water that adds 10 times of volume of material in the extractor is regulated with alkali and to be extracted water between the pH7.5-8 10.Heating, also controlled temperature is at 50-60 ℃, and atmospheric pressure state extracted 2 hours, sheet frame press filtration 11, and filtrate 12 is put into storage tank.Residue 13 is stayed to do in the jar to extract for the third time and is used.
5) neutral water extracts
The water that adds 10 times of volume of material in the extractor is with acid for adjusting pH neutrality 14.Heating, also controlled temperature is at 95-100 ℃, and atmospheric pressure state extracted 1 hour, filter press, and filtrate 15 is put into storage tank.Residue is emitted and is discarded.
6) united extraction liquid is transferred pH neutrality
Merge No. three times extracting solution, transfer to neutral 16 with acid or alkali again according to recording pH.
7) concentrating under reduced pressure
Extracting solution is pumped in the concentrating under reduced pressure jar, carry out concentrating under reduced pressure 17,65~70 ℃ of concentration tank temperature, pressure is less than 0.1MPa.Be concentrated to proportion 1.050~1.080 (50 ℃ of heat are surveyed).
8) flocculation sediment
Select for use chitosan as flocculating settling agent, with heavy metal chelating sedimentation 18 residual in viscous substance in the extracting solution and the water quality.First acetic acid with 2% is made into 1% solution, add-on 10% when adding chitosan.
7) centrifugal removal sediment 19
4000rmp centrifugation, disgorging, supernatant liquor are further done alcohol precipitation and are used.
8) alcohol precipitation 20
Slowly add 95% ethanol that is equivalent to 4 times of liquor capacities in clear liquor, mixing spends the night.
9) centrifugal collecting precipitation 21
4000rmp centrifugation supernatant liquor, the collecting precipitation thing.Supernatant liquor reclaims ethanol 22 to distillate ethanol degree<10%23.
10) precipitation vacuum-drying 24
With the throw out high plate of packing into equably, material is high be no more than dish high 1/3.Placed 60~65 ℃ of baking oven inner dryings earlier 4 hours.Vacuumize drying again, 65 ℃ of temperature controls, negative pressure 0.1MPa, vacuum-drying 8 hours.
11) crushing packing
Take out dry thing, the pulverizer that is cooled with circulating water is pulverized material, crosses 80 mesh sieves.Promptly obtain hedgehogt fungus crude polysaccharose 25 extracts, measure packing in accordance with regulations with thin aluminum bag.