CN101967178B

CN101967178B - Method for extracting high-content diosgenine hydrolysate

Info

Publication number: CN101967178B
Application number: CN2010102637980A
Authority: CN
Inventors: 王元华; 张家平
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-23
Filing date: 2010-08-23
Publication date: 2012-09-05
Anticipated expiration: 2030-08-23
Also published as: CN101967178A

Abstract

The invention discloses a method for extracting high-content diosgenine hydrolysate, which comprises the following steps of: firstly, uniformly mixing screened and dedusted rice hulls with saponin hydrolysate and filling the mixed materials into an extraction tank; secondly, adding No.120 gasoline into the extraction tank, heating the gasoline in the extraction tank to obtain concentrated extract liquor, cooling, crystallizing, centrifuging the crystallized product and drying the centrifuged product to obtain saponin; thirdly, heating the residual mixed materials in the extraction tank until the gasoline in the residual mixed materials is completely vaporized and recovered; and finally, discharging the residual mixed material in the extraction tank and removing the hydrolysate residue in the residual mixed materials by screening. In the invention, the adopted rice hulls are hollow and have a high porosity factor and high air permeability, and when the rice hulls are mixed with the high-content hydrolysate, the porosity factor of the hydrolysate can be increased, and the high-density percolation can be percolated and extracted by using the gasoline conveniently and easily; the gasoline in the residual mixed materials can be vaporized and recovered conveniently; and the rice hulls can be recycled after drying, so that cost can be saved and production efficiency can be improved.

Description

A kind of high-content diosgenin hydrolyzate process for extracting

Technical field

The present invention relates to vegetable chemistry engineering field, especially relate to a kind of high-content diosgenin hydrolyzate process for extracting.

Background technology

Diosgenin is a main raw material of producing steroid hormone, and traditional saponin working method is that starting raw material yam yellow ginger, Dioscorea nipponica Mak. Ningpo Yam Rhizome etc. are pulverized back whole fermentation acidolysis.Because this method not only consumes energy, consumes acid, water consumption, also can produce a large amount of organic waste waters; And the hydrolyzate that traditional technology is produced contains a large amount of fibers, and its saponin content is merely 10%, thus power consumption when extracting, consumption oil (120# gasoline), so the production technique that progressively is cleaned replaces.Process for cleanly preparing gordian technique difficult point also exists saponin hydrolysate to extract difficult problem except the spissated technology of saponins slurry, because process for cleanly preparing is to adopt partition method; 50% fiber in the yellow ginger and 40% starch are separated before the hydrolysis; Have only mixtures such as saponin about 10%, pectin to participate in hydrolysis, so fibre-bearing hardly in the hydrolyzate, it is Powdered that hydrolyzate is; Its saponin content reaches 40%～60%; Be 5 times of traditional technologys, the density of hydrolyzate is big, voidage is about 30%～50%, and ventilation property is poor.When extracting saponin, organic solvents such as gasoline can not be penetrated in the hydrolyzate, even adopt stirring method, saponin also can't be extracted.And after extracting saponin, the gasoline that mixes in the clout also is difficult to the evaporation recovery, and this process is more difficult than leaching process.The contriver also attempts adopting the conjugate ring of minimum gauge to increase the voidage of hydrolyzate as filler; But minimum clearance is about 1～2 centimetre between the ring of filler and the ring; Excessive clearance between experiment proof ring and the ring; Hydrolyzate ventilation property between filler is still very low, so use conjugate ring also not reach the purpose of extraction as filler separately.

Summary of the invention

The purpose of this invention is to provide a kind of high-content diosgenin hydrolyzate process for extracting; Adopt rice husk to do the hydrolyzate filler and extract saponin; Can improve the voidage of hydrolyzate; Can be convenient to the infiltration of gasoline and the extraction of saponin, also help mixing the evaporation recovery of gasoline in the clout, reach purpose energy-conservation, fuel-efficient, that reduce production costs.

In order to solve the problems of the technologies described above, technical scheme of the present invention is following: a kind of high-content diosgenin hydrolyzate process for extracting, and its step is following:

1) mix: at first, with rice husk sieve, dedusting, again rice husk and saponin hydrolysate are mixed the back and add extractor, wherein, the weight ratio of rice husk and saponin hydrolysate is 1: 2～4, its mixed voidage is 65%～60%;

2) heating and extracting: in extractor, add 120# gasoline; The consumption of gasoline is advisable with the last plane that does not have the mix batching; Gasoline in the extractor is heated to 80 ℃～100 ℃; Through the extraction of 5～8 hours continuous backflow, in concentration tank, obtain concentrated extract, concentrated extract obtains saponin after cooling, crystallization, centrifugal, drying;

3) reclaim gasoline: the mixing clout in the heating and extracting jar, the gasoline in mixing clout is evaporated fully, is reclaimed;

4) separate rice husk: discharge mixing clout remaining in the extractor, adopt 15～40 purposes sieve that shakes, screen out the hydrolyzate slag in the mixing clout, wherein screen overflow is a rice husk, and rice husk is recycling after drying.

Improvement to technique scheme: before carrying out step 1), pour water ratio into extractor less than 5% rice husk earlier, add 120# gasoline again; The consumption of gasoline is advisable with the last plane that did not have rice husk; The temperature of gasoline in the extractor is heated to 80 ℃～100 ℃,, can removes fat-soluble pigment and impurity in the rice husk through 30 minutes backflow; Rice husk in the heating and extracting jar then, evaporation reclaim gasoline, it is subsequent use to collect rice husk.

Further improvement to technique scheme: be added with stainless steel conjugate ring filler in the said rice husk.

Beneficial effect:

A kind of high-content diosgenin hydrolyzate process for extracting of the present invention, advantage is following:

1. rice husk is originally as the ghost shape, and its weight and volumetric ratio are 1: 10, so voidage is about 90%, ventilation property is very good, and it is mixed with the high-content hydrolyzate, can increase the voidage of hydrolyzate, helps infiltration, the extraction of gasoline to the high-density hydrolyzate; Also be convenient to simultaneously mixing evaporation, the recovery of gasoline in the clout; And rice husk is recyclable recycling after super-dry, reached the purpose of saving cost, enhancing productivity.

2. the volume of every rice husk is about 5x3x2mm, and every cubic centimetre of rice husk is about 40, and the gap between shell and the shell is the 1-2 millimeter only.Rice husk can full and uniformly mix with saponin hydrolysate like this, does not stay the dead angle during extraction, makes saponin farthest extracted.

3. rice husk and other plant species shell facies ratio, its oil-soluble impurities is few, pigment is low, can not influence the quality of saponin basically.

5. be that 1: 3 amount is mixed according to rice husk than saponin hydrolysate weight ratio, its voidage of mixing the back material is about 65%, is equivalent to the voidage (voidage is about 60%～70%) of traditional saponin hydrolysate.Like this, compare with traditional technology, under the situation of extracting the equivalent saponin, the present invention can be energy-conservation, fuel-efficient more than 50%.

6. before carrying out step 1), remove pigment and oil-soluble impurities in the rice husk earlier, can further improve the extraction quality of saponin.

7. because rice husk itself is softer, the clout in the extractor is difficult for getting rid of.Therefore; According to practical situation, can in rice husk, add stainless steel conjugate ring filler, not only can be convenient to the discharge of clout in the extractor like this; Can also further increase the voidage of hydrolyzate, be convenient to the infiltration of gasoline, the extraction of saponin and the evaporation of gasoline and reclaim.

Embodiment

Below describe the present invention in detail through specific embodiment:

1) earlier water ratio is added extractor less than 5% rice husk; Add 120# gasoline again; The consumption of gasoline is advisable with the last plane that did not have rice husk; The temperature of gasoline in the extractor is heated to 90 ℃, refluxed through 30 minutes and remove pigment and oil-soluble impurities in the rice husk, gasoline is reclaimed in evaporation then, the collection rice husk is subsequent use;

2) earlier with rice husk sieve, dedusting, again rice husk and saponin hydrolysate are mixed, wherein, the weight ratio of rice husk and saponin hydrolysate is 1: 3, add stainless steel conjugate ring filler at last after, again with in their adding extractors;

3) in extractor, add 120# gasoline; The consumption of gasoline is advisable with the last plane that did not have rice husk; The extraction of mixture heating up to 90 in the extractor ℃ continuous backflow after 5～8 hours, is obtained concentrated extract in concentration tank, obtain saponin through cooling, crystallization, centrifugal, drying;

4) the mixing clout in the heating and extracting jar, the gasoline in mixing clout be by evaporation fully, and the condensing surface through the extractor top condenses the gasoline that is evaporated, and agglomerative gasoline flows into withdrawing can;

5) discharge clout in the extractor, adopt 15～40 purposes sieve that shakes, screen out the hydrolyzate slag in the clout, wherein screen overflow is rice husk and conjugate ring, but the reuse after drying of rice husk and conjugate ring.

In the present embodiment " weight ratio of rice husk and saponin hydrolysate is 1: 2～2.5 ", its voidage is about 65%, and the voidage of mixture is increased to 65% like this, is easy to the extraction of saponin.In actual production, also can carry out proportioning to the weight ratio of rice husk and saponin hydrolysate as required, when " weight ratio of rice husk and saponin hydrolysate is 1: 3 ", with respect to " weight ratio of rice husk and saponin hydrolysate is 1: 2～2.5 ".Under the unit volume, 1: 3 proportioning mixture voidage is smaller, though the amount that saponin is extracted increases, spended time is slightly long, and energy consumption is high relatively slightly, so need carry out proportioning according to practical situation.

Inexpensive being prone to of rice husk got in the aforesaid method, efficiently solves the high-content saponin hydrolysate and extracts difficult problem, and when having joint, energy-conservation, fuel-economizing, synergic advantage, and rice husk recycles, and can effectively reduce cost.

In the aforesaid method, in the mixture of rice husk and saponin hydrolysate, adding has the conjugate ring filler, and the usage quantity of this conjugate ring filler can increase or reduce according to demand of practical production.For example: add the extractor bottom conjugate ring quantity can more than in the extractor, the quantity of upper strata conjugate ring, so just more help the extraction of saponin.

Claims

1. high-content diosgenin hydrolyzate process for extracting, its step is following:

2. a kind of high-content diosgenin hydrolyzate process for extracting according to claim 1 is characterized in that: be added with stainless steel conjugate ring filler in the said rice husk.

3. high-content diosgenin hydrolyzate process for extracting, its step is following:

1) pre-treatment is poured water ratio into extractor less than 5% rice husk earlier, adds 120# gasoline again; The consumption of gasoline is advisable with the last plane that did not have rice husk; The temperature of gasoline in the extractor is heated to 80 ℃～100 ℃,, can removes fat-soluble pigment and impurity in the rice husk through 30 minutes backflow; Rice husk in the heating and extracting jar then, evaporation reclaim gasoline, it is subsequent use to collect rice husk.Mix: at first, with rice husk sieve, dedusting, again rice husk and saponin hydrolysate are mixed the back and add extractor, wherein, the weight ratio of rice husk and saponin hydrolysate is 1: 2～4, its mixed voidage is 65%～60%;

4. a kind of high-content diosgenin hydrolyzate process for extracting according to claim 3 is characterized in that: be added with stainless steel conjugate ring filler in the said rice husk.