CN1850853A

CN1850853A - Pollution-free production method for processing saponin from dioscorea zingibernensis

Info

Publication number: CN1850853A
Application number: CNA2006100191339A
Authority: CN
Inventors: 章浸冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-22
Filing date: 2006-05-22
Publication date: 2006-10-25
Anticipated expiration: 2026-05-22
Also published as: CN100415767C

Abstract

The invention relates to a no pollution method for ginger processed saponin. It includes the following steps: washing yam, smashing, and grinding to slurry; depositing and separating to gain saponin slurry; acid hydrolysis saponin slurry; neutralizing and pressing, controlling the temperature at 40-80degree centigrade, pressure at 0.2-0.8MPa; distilling saponin. The waste water process method includes the following steps: taking fluid bed biology film process to the filtrate, accessing to compounding bacterium, the processed waste water could be directly discharged.

Description

The pollution-free production method of processing saponin from dioscorea zingibernensis

Technical field

The present invention relates to a kind of pollution-free production method of processing saponin from dioscorea zingibernensis.

Background technology

Yellow ginger is the peculiar kind of China, contains a certain amount of saponin in its rhizome and can get saponin after hydrolysis.Saponin is the important medicine chemical material of synthesizing steroid hormone medicine, but synthetic progestin, protein anabolic hormone and more than 200 kind of medicine of adrenocortical hormone three major types.Therefore, from yellow ginger, extract saponin and have very big pharmacology and marketable value.Since the seventies in last century, what processing saponin from dioscorea zingibernensis generally adopted is that yellow ginger is cleaned, is ground into slurry earlier, then to slurry spontaneous fermentation, acid hydrolysis makes the saponin hydrolysis go out saponin to tunning again, dries after washing sour water then, uses the technology of No. 120 gasoline lixiviate saponin again.This technology is continued to use for many years, and its problem that mainly exists is that production technique falls behind; Production cycle is long; Raw material consumption is big; Pollute especially severe; The extraction yield of saponin is low, and it is 0.6-0.8% that cadmium yellow ginger is extracted the saponin rate, and dried turmeric saponin extraction yield is 1.8-2.0%; Poor product quality, the fusing point of product saponin are generally at 193-195 ℃; Labor strength is big.According to statistics, 1 ton of saponin of every production, need yellow ginger 130-180 ton, produce waste water 400-500 ton, waste water COD is up to 90000mg/l, BOD18000mg/l, waste water ph 1.0-2.5, because water consumption is big, saponin manufacturing enterprise concentrates on the upstream, Han River of the south water to north because of raw material site 90%, and efflux wastewater causes very big pollution for the water body environment and directly influences the water quality of reservoir area, Danjiang River.

Summary of the invention

The object of the present invention is to provide a kind of pollution-free production method of processing saponin from dioscorea zingibernensis, make all qualified discharges of all pollutents, can improve resource utilization, reclaim starch, fiber useful matter in the yellow ginger, the overall economic efficiency of whole complete processing is significantly improved.

At above-mentioned purpose, the present invention proposes a kind of pollution-free production method of processing saponin from dioscorea zingibernensis, it is characterized in that being undertaken by following method:

A, raw materials pretreatment: clean yellow ginger with clear water, use crusher in crushing, pulping is ground with grinding machine in broken back, makes the particle of yellow ginger slurry reach the 40-150 order, and concentration is 5-12%; B extracts saponins slurry: adopt precipitate and separate, the saponin that proportion is lighter separates with fiber, starch, obtains saponins slurry, and starch is made finished product and recycled, and fiber is as feed utilisation; C, saponins slurry acid hydrolysis: carry out acid hydrolysis with sulfuric acid, pressure-controlling is at 0.1～0.3MPa, obtains the saponins slurry after the hydrolysis; Filter is pressed in d, neutralization: at first use the saponins slurry after the liming neutralizing hydrolysis, adopt the saponins slurry after the hydrolysis sheet frame to press filter then, obtain half-finished hydrolyzate and filtrate filtered; Wherein, temperature is controlled at 40～80 ℃, and pressure-controlling is at 0.2～0.8MPa, and the filtration particle diameter that sheet frame presses filter is controlled at more than 650 orders; E, extraction saponin: No. 120 gasoline extractions, separation gasoline are dried, added to half-finished hydrolyzate with routine get the saponin product;

Method of wastewater treatment:

Filtrate filtered, carrying out fluid bed biological film handles, microbial film is a kind of specific surface area adjustable microorganism base source carrier in 200--1200 metre squared per cubic scope, insert the combination bacterial classification on microbial film, described combination bacterium is total plants that to be rhizopus niger, actinomycetes, bacillus and assorted living bacterium form in 6: 1: 3 ratio proportioning; Waste water after the processing is clearly clear water of color and luster, and COD is below 150ppm, and colourity is up to standard, can directly discharge.

The present invention has relatively continued to use the technology of traditional processing saponin from dioscorea zingibernensis of many decades, while separated fiber, recovery starch, saponin content is compared traditional technology and is improved more than 3 times, fiber and starch before the hydrolysis saponin, have been separated, reduce thus with acid amount 80-85%, manufacturing expense is saved 50-60%, and the overall economic efficiency of whole complete processing is significantly improved; In addition, the COD chemical oxygen demand after the wastewater treatment is that colourity is up to standard below the 120ppm, directly reaches the comprehensive trade effluent first discharge standard of country.

Description of drawings

Fig. 1 is a process flow sheet of the present invention.

Embodiment

With reference to figure 1, the pollution-free production method of processing saponin from dioscorea zingibernensis of the present invention is exemplified below:

Saponin is extracted flow process: a, raw materials pretreatment: clean yellow ginger with clear water, use crusher in crushing, pulping is ground with colloidal mill in broken back, makes the particle of yellow ginger slurry reach the 140-150 order, and concentration is 5-12%; B, separation saponins slurry: sieve from going out fiber with separation garden sieve or gravity earlier, use the starch settlement separate, that proportion is heavier separately to obtain saponins slurry again, starch is made finished product and is recycled, and fiber is as feed utilisation; C, saponins slurry acid hydrolysis: carry out acid hydrolysis with sulfuric acid, pressure-controlling is at 0.1～0.3MPa, obtains the saponins slurry after the hydrolysis; Filter is pressed in d, neutralization: at first use the saponins slurry after the liming neutralizing hydrolysis while hot when discharging, adopt the saponins slurry after the hydrolysis sheet frame to press filter then, obtain half-finished hydrolyzate and filtrate filtered; Wherein, temperature is controlled at 40～80 ℃, and pressure-controlling is at 0.2～0.8MPa, and the filtration particle diameter that sheet frame presses filter is controlled at 650 orders above (saponin content is at 45-55% in the work in-process, and traditional worker's technology is on average about 12%); E, extraction saponin: No. 120 gasoline extractions, separation gasoline are dried, added to half-finished hydrolyzate with routine get the saponin product;

Method of wastewater treatment:

Filtrate filtered is carried out fluid bed biological film to be handled, microbial film is a kind of specific surface area adjustable microorganism base source carrier in 200--1200 metre squared per cubic scope, insert the combination bacterial classification on microbial film, described combination bacterium is total plants that to be rhizopus niger, actinomycetes, bacillus and assorted living bacterium form in 6: 1: 3 ratio proportioning; Waste water after the processing is limpid in sight clear water, COD below the 120ppm and B/C be controlled between the 0.2-0.3, colourity is up to standard, directly reaches the comprehensive trade effluent first discharge standard of country.

Rhizopus niger is the adaptation bacterial classification in the strong acid environment, and actinomycetes are the extensive bacterial strains in the weakly acidic condition, and bacillus and assorted living bacterium are the certainly contact bacterium of the bacterium families of a large amount of existence in the air as biochemical degradation.

Fluid bed biological film after making up bacterial classification and inserting, metabolism and fission and circulate voluntarily, only otherwise just need not to replenish new provenance when stopping production.In addition, so these bacterial classifications are to be easy to obtain in the microbe research commercial form.

Claims

A kind of pollution-free production method of processing saponin from dioscorea zingibernensis is characterized in that being undertaken by following method:

Saponin is extracted flow process:

A, raw materials pretreatment: clean yellow ginger with clear water, use crusher in crushing, pulping is ground with grinding machine in broken back, makes the particle of yellow ginger slurry reach the 40-150 order, and concentration is 5-12%; B extracts saponins slurry: adopt precipitate and separate, the saponin that proportion is lighter separates with fiber, starch, obtains saponins slurry, and starch is made finished product and recycled, and fiber is as feed utilisation; C, saponins slurry acid hydrolysis: carry out acid hydrolysis with sulfuric acid, pressure-controlling is at 0.1～0.3MPa, obtains the saponins slurry after the hydrolysis; Filter is pressed in d, neutralization: at first use the saponins slurry after the liming neutralizing hydrolysis, adopt the saponins slurry after the hydrolysis sheet frame to press filter then, obtain half-finished hydrolyzate and filtrate filtered; Wherein, temperature is controlled at 40～80 ℃, and pressure-controlling is at 0.2～0.8MPa, and the filtration particle diameter that sheet frame presses filter is controlled at more than 650 orders; E, extraction saponin: No. 120 gasoline extractions, separation gasoline are dried, added to half-finished hydrolyzate with routine get the saponin product;

Method of wastewater treatment:

Filtrate filtered is carried out fluid bed biological film to be handled, microbial film is a kind of specific surface area adjustable microorganism base source carrier in 200--1200 metre squared per cubic scope, insert the combination bacterial classification on microbial film, described combination bacterium is total plants that to be rhizopus niger, actinomycetes, bacillus and assorted living bacterium form in 6: 1: 3 ratio proportioning; Waste water after the processing is clearly clear water of color and luster, and COD is below 150ppm, and colourity is up to standard, can directly discharge.