CN104086664B - Gracilaria lemaneiformis polysaccharide extract and preparation method and application thereof - Google Patents

Gracilaria lemaneiformis polysaccharide extract and preparation method and application thereof Download PDF

Info

Publication number
CN104086664B
CN104086664B CN201410252784.7A CN201410252784A CN104086664B CN 104086664 B CN104086664 B CN 104086664B CN 201410252784 A CN201410252784 A CN 201410252784A CN 104086664 B CN104086664 B CN 104086664B
Authority
CN
China
Prior art keywords
thallus gracilariae
extract
solution
extracting solution
ethanol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201410252784.7A
Other languages
Chinese (zh)
Other versions
CN104086664A (en
Inventor
游丽君
张云林
扶雄
郑必胜
刘瑞海
郭新波
崔春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanwei Weiming Biotechnology Co ltd
Original Assignee
South China University of Technology SCUT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by South China University of Technology SCUT filed Critical South China University of Technology SCUT
Priority to CN201410252784.7A priority Critical patent/CN104086664B/en
Publication of CN104086664A publication Critical patent/CN104086664A/en
Application granted granted Critical
Publication of CN104086664B publication Critical patent/CN104086664B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Medicines Containing Plant Substances (AREA)

Abstract

The invention belongs to the field of deep processing of asparagus and discloses an asparagus polysaccharide extract and a preparation method and application thereof. The polysaccharide extract of the asparagus is prepared by drying and crushing the asparagus, and then extracting the dried and crushed asparagus by organic acid, neutralizing by alkali, extracting by ultrasonic, ultrafiltering, separating by ion exchange resin, concentrating and precipitating by alcohol. The preparation method of the asparagus polysaccharide extract is simple and efficient, and is suitable for industrial production, and the obtained asparagus polysaccharide extract has strong antioxidant activity and hypoglycemic activity, has high inhibition rate on dipeptidyl peptidase IV, and can be used for preparing hypoglycemic drugs or health care products.

Description

A kind of Thallus Gracilariae polyoses extract and preparation method and application
Technical field
The invention belongs to Thallus Gracilariae field of deep and in particular to a kind of Thallus Gracilariae polyoses extract and preparation method thereof with Application.
Background technology
Thallus Gracilariae (gracialrialemaneofimrsi) belongs to Rhodophyta, Gigartinales, and river hedge belongs to (gracaialri), former Originate in China's Shandong coastal waters and okinawa of japan.Because conventional Thallus Gracilariae cultivates small scale, yield is not high and palatability is poor, so Seldom directly eat, be mainly used in extracting agar, separately have small part to be used as abalone culture feedstuff, among the people be used for being used as medicine." book on Chinese herbal medicine Detailed outline " described in this flavour of a drug sweet cold in nature, have the effect of softening and eliminating sputum, clearing away heat and promoting diuresis, be used for controlling wart stagnation of pathogenic heat gas, dysuria, the moon Empty interior-heat.At the beginning of 2000, Guangdong Province of Institute of Oceanology of the Chinese Academy of Sciences marine resources research centre of development and Nanao County science and technology are emerging Extra large office cooperation development Thallus Gracilariae transplants the research of In The Eastern Guangdong Sea Area, and project succeeds, and has started south China sea area dragon The successful precedent of dish nursery.After the popularization of 3 years, the cultivation of Nan'ao Thallus Gracilariae has reached large-scale production level, and average product reaches To 525t/1000m2, and driven the rise of Guangdong Fujian coastal area large-scale farming.At present, Thallus Gracilariae has become as in China The fourth-largest cultivation Sargassum after Thallus Laminariae (Thallus Eckloniae), Thallus Porphyrae, Thallus Laminariae.
Because early stage Thallus Gracilariae yield rareness is not taken seriously always, the research to Thallus Gracilariae is all little both at home and abroad.With near The continuous expansion of artificial cultivation scale and increasing sharply of yield over year, the research about Thallus Gracilariae function and application is also gradually drawn Play the interest of people, but research report relevant at present is concentrated mainly on plantation and processing aspect, to asparagus active material Extract and the research report of physiological function is very few, only a small amount of patent is open.As State Oceanic Administration Bureau The Third Oceanography Institute is public Open a kind of Thallus Gracilariae agaropectin oligose and preparation method thereof, can be applicable in antioxidation, uvioresistant health product and cosmetics (specially Sharp application number 201210347105.5);Li Xuejiao discloses a kind of method (number of patent application extracting cancer-resisting substance in Thallus Gracilariae 201210089080.3);Zhengzhou Tobacco Research Institute of CNTC discloses the preparation method of asparagus rough polysaccharide and incites somebody to action It is applied in Medicated cigarette, can improve humid keeping performance and the sucking quality (number of patent application 201010204566.8) of Medicated cigarette;Zhu Yi Life discloses a kind of method (number of patent application 201010188414.3) of the antioxidation composition improving Thallus Gracilariae extract;Shanghai Ocean university discloses a kind of extraction of Thallus Gracilariae polysaccharide and isolation and purification method, and gained polysaccharide has the immune work(of preferable raising Effect (number of patent application 200810042987.8);Shanghai Aquatic Products Univ. 9CN) discloses a kind of preparation method of Thallus Gracilariae polysaccharide, gained Polysaccharides on Mice lymphocyte has higher cultivation effect (number of patent application 200710044610.1);Guangdong Pharmaceutical University is open A kind of Thallus Gracilariae and processing method, can be applicable to leisure food (number of patent application 200710027284.3).
Dipeptidyl peptidase iv (dipeptidyl peptidase iv, dpp-iv) can fast and effeciently degrade pancreas hyperglycemia Plain sample peptide 1 (glp-1, glucagon-like peptide-1), glp-1 is that insulin generates and secretes maximally effective stimulant One of, therefore suppression dpp-iv can strengthen the effect of endogenouss glp-1, thus improving the level of insulin in blood, and then drops Blood sugar level that is low and maintaining diabetes patient.Medical science has confirmed that dpp-iv inhibitor is that a kind of new anti-diabetic is controlled at present Treat medicine, clinical effectiveness shows that such medicine has good hypoglycemic effect, do not find that other diabetes medicaments are produced simultaneously Common body weight increase and the untoward reaction such as hypoglycemia.
Content of the invention
In order to improve the deep process technology of Thallus Gracilariae, widen the range of application of Thallus Gracilariae, the primary and foremost purpose of the present invention is A kind of Thallus Gracilariae polyoses extract is provided;
Another object of the present invention is to providing the preparation method of above-mentioned Thallus Gracilariae polyoses extract;
It is still another object of the present invention to provide the application of above-mentioned Thallus Gracilariae polyoses extract.
The purpose of the present invention is achieved through the following technical solutions:
A kind of Thallus Gracilariae polyoses extract, described Thallus Gracilariae polyoses extract is prepared from by Thallus Gracilariae is extracted, mainly Monosaccharide component is d- galactose and 3,6- inner ether-l galactose;
Described Thallus Gracilariae polyoses extract is prepared from by the preparation method comprising the steps of:
(1) Thallus Gracilariae dried, pulverize and sieve, degreasing decoloring obtains Thallus Gracilariae powder;
(2) extract Thallus Gracilariae powder with organic acid soln, then neutralized with alkali, filter, obtain filtering residue and first time extracting solution;
(3) step (2) gained filtering residue is carried out ultrasonic extraction method in water, filter to obtain second extracting solution, will be described First time extracting solution is merged with second extracting solution and obtains final extracting solution;
(4) described for step (3) final extracting solution is carried out ultrafiltration, collect permeate;
(5) spent ion exchange resin separates described permeate, takes high-activity component to carry out concentrated in vacuo, obtains concentrated solution;
(6) described concentrated solution is mixed with ethanol, standing, be filtrated to get polysaccharide precipitation;
(7) described polysaccharide precipitation is dried, obtains described Thallus Gracilariae polyoses extract.
The preparation method of above-mentioned Thallus Gracilariae polyoses extract, comprises the steps:
(1) Thallus Gracilariae dried, pulverize and sieve, degreasing decoloring obtains Thallus Gracilariae powder;
Preferably, described pulverizing and sieving crosses 20~60 mesh sieves for after pulverizing;
Wherein, the concretely comprising the following steps of described degreasing decoloring: using ethanol solution or acetone soln, micro-boiling is carried out to Thallus Gracilariae Extract, filter to obtain slag, dry for standby;Preferably, the quality of the volume of described ethanol solution or acetone soln and described Thallus Gracilariae Volume mass than be (2~6): 1;Described ethanol solution is the ethanol solution of volume fraction 95%;Described micro-boiling extract when Between be 2~4 hours;
(2) extract Thallus Gracilariae powder with organic acid soln, then neutralized with alkali, filter, obtain filtering residue and first time extracting solution;
Preferably, the ph value of described organic acid soln is 1.5~3.5;
Preferably, described organic acid soln is citric acid solution or malic acid solution;
Preferably, the quality of described organic acid soln is 20~50 times of described Thallus Gracilariae powder quality;
(3) step (2) gained filtering residue is carried out ultrasonic extraction method in water, filter to obtain second extracting solution, will be described First time extracting solution is merged with second extracting solution and obtains final extracting solution;
Preferably, the control condition of described ultrasonic extraction method is: ultrasonic power 320~640w, Extracting temperature be 30~ 70 DEG C, extraction time is 20~60 minutes;
(4) described for step (3) final extracting solution is carried out ultrafiltration, collect permeate;
Preferably, described ultrafiltration adopts the ultrafilter membrane of molecular cut off 20kda;
(5) spent ion exchange resin separates described permeate, takes high-activity component to carry out concentrated in vacuo, obtains concentrated solution;
Preferably, the model deae-fast flow or 717 of described ion exchange resin;
Preferably, described gained concentrated solution concentrated in vacuo is the 1/5~1/3 of described permeate volume;
(6) described concentrated solution is mixed with ethanol, standing, be filtrated to get polysaccharide precipitation;
Preferably, the consumption of described ethanol accounts for 50%~80% of cumulative volume after described concentrated solution is mixed with ethanol;
Preferably, the concrete operations of described standing are: stand 8~14 hours at 0~4 DEG C;
(7) described polysaccharide precipitation is dried, obtains described Thallus Gracilariae polyoses extract;
Preferably, described drying is vacuum lyophilization or spray drying.
Application in preparing dipeptidyl peptidase iv inhibitor for the above-mentioned Thallus Gracilariae polyoses extract;
Application in preparing hypoglycemic drug or health product for the above-mentioned Thallus Gracilariae polyoses extract.
The present invention has such advantages as with respect to prior art and effect:
(1) preparation method of the present invention adopts organic acid to combine ultrasonic method and extracts polysaccharide, and its extraction ratio is than traditional water extraction Method improves 2~4 times, can significantly shorten extraction time, reducing energy consumption, antioxidant effect is better than traditional water extraction simultaneously.
(2) Thallus Gracilariae polyoses extract of the present invention can significantly inhibit the activity of dipeptidyl peptidase iv, has blood sugar lowering Effect, is the reported first of this area, and the research having filled up this respect both at home and abroad at present is blank.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1
A kind of Thallus Gracilariae polyoses extract, its preparation method is as follows:
(1) Thallus Gracilariae crosses 20 mesh sieves after shining dry grinding, plus the volume fraction 95% with respect to 2 times of volume mass ratios of Thallus Gracilariae Ethanol solution, micro-boiling extract 3 hours, filter to obtain slag, dry at 60 DEG C Thallus Gracilariae powder is standby;
(2) take 50g Thallus Gracilariae powder to be placed in container, mix homogeneously by the quality ratio of 1:30 with the citric acid of ph2.0, micro-boiling Extract 3 hours, it is neutral for being neutralized to ph value with naoh, filters to obtain filtering residue and first time extracting solution;
(3) step (2) gained filtering residue is used ultrasonic extraction method in water, ultrasonic power 500w, 40 DEG C of Extracting temperature, carry Take 30 minutes, filter to obtain second extracting solution, merge with step (2) gained first time extracting solution, obtain final extracting solution;
(4) the final extracting solution of step (3) gained is carried out ultrafiltration with the film of molecular cut off 20kda, collect permeate;
(5) spent ion exchange resin deae-fast flow model separation permeate, takes active highest component, and vacuum is dense It is reduced to the 1/4 of permeate volume, obtain concentrated solution;
(6) add ethanol in concentrated solution, after mix homogeneously, at 2 DEG C, stand 12 hours, filter, remove the supernatant Part, obtains polysaccharide precipitation;
(7) by gained polysaccharide precipitation lyophilization, obtain described Thallus Gracilariae polyoses extract, be designated as 1# extract.
Embodiment 2
A kind of Thallus Gracilariae polyoses extract, its preparation method is as follows:
(1) Thallus Gracilariae crosses 60 mesh sieves after shining dry grinding, plus the volume fraction 95% with respect to 6 times of volume mass ratios of Thallus Gracilariae Ethanol solution, micro-boiling extract 2 hours, filter to obtain slag, dry at 40 DEG C Thallus Gracilariae powder is standby;
(2) take 50g Thallus Gracilariae powder to be placed in container, mix homogeneously by the quality ratio of 1:50 with the malic acid of ph1.5, micro-boiling Extract 1 hour, it is neutral for being neutralized to ph value with naoh, filters to obtain filtering residue and first time extracting solution;
(3) step (2) gained filtering residue is used ultrasonic extraction method in water, ultrasonic power 320w, 60 DEG C of Extracting temperature, carry Take 60 minutes, filter to obtain second extracting solution, merge with step (2) gained first time extracting solution, obtain final extracting solution;
(4) the final extracting solution of step (3) gained is carried out ultrafiltration with the film of molecular cut off 20kda, collect permeate;
(5) spent ion exchange resin 717 model separation permeate, takes active highest component, is concentrated in vacuo to permeate The 1/3 of volume, obtains concentrated solution;
(6) add ethanol in concentrated solution, after mix homogeneously, at 4 DEG C, stand 14 hours, filter, remove the supernatant Part, obtains polysaccharide precipitation;
(7) by gained polysaccharide precipitation lyophilization, obtain described Thallus Gracilariae polyoses extract, be designated as 2# extract.
Embodiment 3
A kind of Thallus Gracilariae polyoses extract, its preparation method is as follows:
(1) Thallus Gracilariae crosses 40 mesh sieves after shining dry grinding, plus the volume fraction 95% with respect to 5 times of volume mass ratios of Thallus Gracilariae Ethanol solution, micro-boiling extract 4 hours, filter to obtain slag, dry at 60 DEG C Thallus Gracilariae powder is standby;
(2) take 50g Thallus Gracilariae powder to be placed in container, mix homogeneously by the quality ratio of 1:20 with the citric acid of ph3.5, micro-boiling Extract 3 hours, it is neutral for being neutralized to ph value with naoh, filters to obtain filtering residue and first time extracting solution;
(3) step (2) gained filtering residue is used ultrasonic extraction method in water, ultrasonic power 640w, 30 DEG C of Extracting temperature, carry Take 20 minutes, filter to obtain second extracting solution, merge with step (2) gained first time extracting solution, obtain final extracting solution;
(4) the final extracting solution of step (3) gained is carried out ultrafiltration with the film of molecular cut off 20kda, collect permeate;
(5) spent ion exchange resin deae-fast flow model separation permeate, takes active highest component, and vacuum is dense It is reduced to the 1/5 of permeate volume, obtain concentrated solution;
(6) add ethanol in concentrated solution, after mix homogeneously, at 0 DEG C, stand 8 hours, filter, remove supernatant portion Point, obtain polysaccharide precipitation;
(7) by gained polysaccharide precipitation lyophilization, obtain described Thallus Gracilariae polyoses extract, be designated as 3# extract.
The traditional water extraction preparation Thallus Gracilariae polyoses extract of comparative example 1
A kind of Thallus Gracilariae polyoses extract, is prepared using traditional water extraction, its preparation method is as follows:
(1) Thallus Gracilariae crosses 20 mesh sieves after shining dry grinding, plus the volume fraction 95% with respect to 2 times of volume mass ratios of Thallus Gracilariae Ethanol solution, micro-boiling extract 3 hours, filter to obtain slag, dry at 60 DEG C Thallus Gracilariae powder is standby;
(2), after taking Thallus Gracilariae powder hot water in the container to boil 2 hours, filtering residue and first time extracting solution are filtered to obtain;Described filter Slag boils 1 hour, filters to obtain second extracting solution;Then first time extracting solution is merged with second extracting solution, obtain and finally carry Take liquid;
(3) the final extracting solution of step (2) gained is carried out ultrafiltration with the film of molecular cut off 20kda, collect permeate;
(4) spent ion exchange resin deae-fast flow model separation permeate, takes active highest component, and vacuum is dense It is reduced to the 1/4 of permeate volume, obtain concentrated solution;
(5) add ethanol in concentrated solution, after mix homogeneously, at 0~4 DEG C, stand 12 hours, filter, remove upper strata clear Liquid part, obtains polysaccharide precipitation;
(6) by gained polysaccharide precipitation lyophilization, obtain Thallus Gracilariae polyoses extract, be designated as 4# extract.
Experimental example 1 measures polysaccharide extract rate
Measure the polysaccharide extract rate of each Thallus Gracilariae polyoses extract in embodiment and comparative example.
Polyoses content in 1#~4# extract is measured using phend-sulphuric acid, calculates polysaccharide extract rate, formula is: many Sugared extraction ratio (%)=(polyoses content (g)/raw material weight (g) in extracting solution) × 100.
Each Thallus Gracilariae polyoses extract measure and calculation result is as shown in table 1:
The polysaccharide extract rate of each extract of table 1.
Extract 1# extract 2# extract 3# extract 4# extract
Polysaccharide extract rate (%) 14.12±0.67 10.57±0.58 12.24±0.49 4.36±0.65
Note: in table, data is meansigma methodss ± standard deviation (n=3)
As can be known from the table data, the Thallus Gracilariae polysaccharide extract rate of the method for the invention is many apparently higher than traditional water extraction Sugared extraction ratio.
Experimental example 2 measures dpph radical scavenging activity
Measure the Scavenging activity of the dpph free radical of each Thallus Gracilariae polyoses extract in embodiment and comparative example, dpph is freely The Scavenging activity of base is a kind of method of more universal survey antioxidant activity.
The Scavenging activity that 1~4# extract carries out dpph free radical is taken to measure, assay method is as follows:
Take the 0.2mmol/l of the aqueous solution of Thallus Gracilariae polyoses extract that 2ml concentration is 0.1~2.0mg/ml and 2ml Dpph solution mixes, vibration, avoid light place 30min under room temperature, surveys light absorption value (ai) under 517nm wavelength;Identical dense with 2ml The sample of degree and 2ml dehydrated alcohol mix as a control group (aj), are in addition mixed with 2ml dpph solution and 2ml dehydrated alcohol Survey light absorption value (ac) afterwards.
Computing formula is: dpph clearance rate (%)=[1- (ai-aj)/ac] × 100.Measure the analysis each dragon of gained The dpph radical scavenging activity ic of dish polyoses extract50Value is as shown in table 2:
The dpph radical scavenging activity ic of each extract of table 2.50Value
From table, data analysiss understand, the dpph free radical scavenging activity of Thallus Gracilariae polyoses extract of the present invention is better than The polyoses extract of traditional water extraction gained.
Experimental example 3 measures oxygen-derived free radicals absorbability (orac)
Measure the oxygen-derived free radicals absorbability of each Thallus Gracilariae polyoses extract in embodiment and comparative example.
Take 1~4# extract to carry out oxygen-derived free radicals absorbability (orac) respectively to measure, surveyed using fluorescence microplate reader Fixed, concrete steps include the following:
It is separately added into the Thallus Gracilariae polyoses extract sample that 20 μ l concentration are 0.05mg/ml in each micropore of 96 orifice plates, then Adding the phosphate buffered solution 20 μ l of ph7.4 and concentration is the luciferin solution 20 μ l of 7nmol/l, preset at 37 DEG C After 15min, start reaction with the aaph140 μ l that multichannel pipettor adds rapidly 12mmol/l in each hole, and microwell plate is put With excitation wavelength 485nm at 37 DEG C in microplate reader, launch wavelength 538nm carries out METHOD FOR CONTINUOUS DETERMINATION, and every 2min measures once each Hole fluorescence intensity, the common 2h of minute.Each extract oxygen-derived free radicals absorbability (orac value) measurement result is as shown in table 3:
The oxygen-derived free radicals absorbability measurement result of each extract of table 3.
Note: in table, data is meansigma methodss ± standard deviation (n=3)
From table, data analysiss understand, the antioxidant activity of Thallus Gracilariae polyoses extract of the present invention is better than traditional water extraction The polyoses extract of method gained.
Experimental example 4 measures the molecular weight of gained Thallus Gracilariae polyoses extract product
Measure the molecular weight of each Thallus Gracilariae polyoses extract in embodiment and comparative example.
1~4# extract is taken to carry out molecular weight determination respectively, by the dextran standard of known molecular amount respectively with flowing Mutually it is configured to the solution of 2.0mg/ml, molecular weight is measured using gel permeation chromatography (gpc), location parameter includes the following:
Chromatographic condition: tsk gel guard column (pw × l6.0 × 40), tsk g-4000k pw × l7.8 × 300 gel column, Tskg-2500k pw × l7.8 × 300 gel column;Mobile phase is 0.2mol/lkh2po4 solution, ph6.0;Flow velocity 0.6ml/ min;35 DEG C of column temperature;Sample introduction 30 μ l;Standard specimen be known molecular amount dextran standard (dextran, molecular weight be 4400da, 9900da, 21400da, 43500da, 124000da, 196000da, 277000da, 401000da, 1285000da, sigma are public Department);Detector is waters2414 differential refraction detector.The average molecular weight results measuring are as shown in table 4:
The molecular weight of each extract of table 4.
From table 4, data analysiss understand, the molecular weight of Thallus Gracilariae polyoses extract of the present invention is significantly less than comparative example 1 The molecular weight of traditional water extraction gained polyoses extract.
Experimental example 5 measures the monosaccharide composition of gained Thallus Gracilariae polyoses extract product
Example 1~3 products therefrom Thallus Gracilariae polyoses extract carries out monosaccharide composition measuring, assay method and ginseng respectively Number includes the following:
Weigh Thallus Gracilariae polyoses extract sample 20mg, add 4m trifluoroacetic acid 5ml, sealing, 110 DEG C of hydrolysis 2h;Hydrolysis Liquid to dry, add methanol 3ml, then is spin-dried for, be repeated 3 times to obtain Thallus Gracilariae polysaccharide hydrolysis thing in 50 DEG C of rotary evaporation in vacuo.
Add oxammonium hydrochloride. 10mg, internal standard inositol six acetass 1mg and pyridine 2ml in Thallus Gracilariae polysaccharide hydrolysis thing, seal, 90 DEG C of water-bath 30min, add after 2ml acetic anhydride 90 DEG C of water-bath 30min again, add 2ml water terminating reaction, add 2ml dichloro Methane extracts, and is repeated twice, discards water layer, is settled to 5ml, adds anhydrous sodium sulfate drying to cross film standby.
Gas chromatographic detection program: hp-5 quartz capillary column (30m × 0.32mm × 0.25 μm);Constant voltage mode, 20psi;Temperature programming: 100 DEG C of initial column temperature, keep 0.5min;Then heated up with 20 DEG C/min, keep 5min;With 3 DEG C/min Rise to 160 DEG C;It is raised to 250 DEG C with 10 DEG C/min again, keep 5min;Injection port is using not shunt mode, 250 DEG C of temperature, carrier gas For nitrogen;250 DEG C of the temperature of fid detector, hydrogen, air and nitrogen flow rate are respectively 30,400 and 25ml/min;Sample introduction body Long-pending 1 μ l.
Various standard monosaccharide (rhamnose, arabinose, fucose, xylose, mannose, glucose and galactose) are identical Under the conditions of carry out saccharin acetass derivatization treatment, the same terms gas chromatographic analysiss.
Measure known to analysis result, the principal monosaccharides of 1#~3# extract consist of: galactose and 3,6- inner ether galactose.
Experimental example 6 measures the rejection ability to dipeptidyl peptidase iv for the Thallus Gracilariae polysaccharide
1~4# extract sample and control sample hypoglycemic drug Gliclazide is taken to carry out the suppression of dipeptidyl peptidase iv respectively The mensure of ability processed, assay method and parameter include the following:
The sample of variable concentrations is added in the dipeptidyl peptidase iv solution that enzyme activity unit is 1u l/l, makes final concentration It is followed successively by 1nmol/l, 10nmol/l, 20nmol/l, 100nmol/l and 500nmol/l, with water as negative control, ice bath is incubated 30min, is added in 96 orifice plates, every hole 100 μ l;Add 100 μ l substrate solutions, with 50mmol/l tris-hcl, 1mol/ It is blank that ledta, ph8.3 replace substrate solution, and every group sets 4 multiple holes, after 37 DEG C of incubation 1h, surveys light absorption value at 405nm, And suppression ratio is calculated according to formula.
Computing formula: dipeptidyl peptidase iv suppression ratio=(aNegative control- aPolysaccharide)/aNegative control× 100%.
Each sample is as shown in table 5 to the rejection ability of dipeptidyl peptidase iv:
The dipeptidyl peptidase iv suppression ratio result of table 5. each sample
Sample 1# extract 2# extract 3# extract 4# extract Gliclazide
Suppression ratio (%) 75.49±1.44 70.57±1.89 64.23±1.11 50.24±2.43 77.68±1.94
Note: in table, data is meansigma methodss ± standard deviation (n=3)
As can be known from the table data, products therefrom Thallus Gracilariae polyoses extract of the present invention is high to the suppression ratio of dipeptidyl peptidase iv In traditional extraction process products therefrom, can be suitable with hypoglycemic drug Gliclazide.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not subject to above-described embodiment Limit, other any spirit without departing from the present invention and the change made under principle, modification, replacement, combine, simplify, All should be equivalent substitute mode, be included within protection scope of the present invention.

Claims (3)

1. application in preparing dipeptidyl peptidase iv inhibitor for the Thallus Gracilariae polyoses extract it is characterised in that: described Thallus Gracilariae Polyoses extract is prepared from by Thallus Gracilariae is extracted, and principal monosaccharides group is divided into d- galactose and 3,6- inner ether-l galactose;
Described Thallus Gracilariae polyoses extract is prepared from by the preparation method comprising the steps of:
(1) Thallus Gracilariae dried, pulverize and sieve, degreasing decoloring obtains Thallus Gracilariae powder;
(2) extract Thallus Gracilariae powder with organic acid soln, then neutralized with alkali, filter, obtain filtering residue and first time extracting solution;
(3) step (2) gained filtering residue is carried out ultrasonic extraction method in water, filter to obtain second extracting solution, by described first Secondary extracting solution is merged with second extracting solution and obtains final extracting solution;
(4) described for step (3) final extracting solution is carried out ultrafiltration, collect permeate;
(5) spent ion exchange resin separates described permeate, takes high-activity component to carry out concentrated in vacuo, obtains concentrated solution;
(6) described concentrated solution is mixed with ethanol, standing, be filtrated to get polysaccharide precipitation;
(7) described polysaccharide precipitation is dried, obtains described Thallus Gracilariae polyoses extract;
The described ultrafiltration of step (4) adopts the ultrafilter membrane of molecular cut off 20kda.
2. according to claim 1 application it is characterised in that: pulverize and sieve described in step (1) for pulverize after cross 20~60 Mesh sieve;The concretely comprising the following steps of step (1) described degreasing decoloring: using ethanol solution or acetone soln, micro-boiling is carried out to Thallus Gracilariae Extract, filter to obtain slag, dry for standby;
The ph value of the described organic acid soln of step (2) is 1.5~3.5;The described organic acid soln of step (2) be citric acid solution or Malic acid solution;The quality of the described organic acid soln of step (2) is 20~50 times of described Thallus Gracilariae powder quality;
The control condition of the described ultrasonic extraction method of step (3) is: ultrasonic power 320~640w, and Extracting temperature is 30~70 DEG C, Extraction time is 20~60 minutes;
The model deae-fast flow or 717 of the described ion exchange resin of step (5);The described institute concentrated in vacuo of step (5) Obtaining concentrated solution is the 1/5~1/3 of described permeate volume;
The consumption of the described ethanol of step (6) accounts for 50%~80% of cumulative volume after described concentrated solution is mixed with ethanol;Step (6) institute The concrete operations stating standing are: stand 8~14 hours at 0~4 DEG C;
The described drying of step (7) is vacuum lyophilization or spray drying.
3. according to claim 2 application it is characterised in that: in the concrete steps of the described degreasing decoloring of step (1): described The volume of ethanol solution or acetone soln is (2~6) with the volume mass ratio of the quality of described Thallus Gracilariae: 1;Described ethanol solution Ethanol solution for volume fraction 95%;The time that described micro-boiling is extracted is 2~4 hours.
CN201410252784.7A 2014-06-09 2014-06-09 Gracilaria lemaneiformis polysaccharide extract and preparation method and application thereof Expired - Fee Related CN104086664B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410252784.7A CN104086664B (en) 2014-06-09 2014-06-09 Gracilaria lemaneiformis polysaccharide extract and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410252784.7A CN104086664B (en) 2014-06-09 2014-06-09 Gracilaria lemaneiformis polysaccharide extract and preparation method and application thereof

Publications (2)

Publication Number Publication Date
CN104086664A CN104086664A (en) 2014-10-08
CN104086664B true CN104086664B (en) 2017-01-25

Family

ID=51634446

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410252784.7A Expired - Fee Related CN104086664B (en) 2014-06-09 2014-06-09 Gracilaria lemaneiformis polysaccharide extract and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN104086664B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105287648B (en) * 2015-11-05 2019-02-12 广东医学院 Sea is delivered vegetables the extraction preparation method and applications of active constituent
CN105535031A (en) * 2015-12-30 2016-05-04 大连海洋大学 Preparation method and application of asparagus extract
CN108586632B (en) * 2018-06-28 2021-08-06 华南理工大学 Gracilaria lemaneiformis polysaccharide with significant blood fat reducing activity and preparation method and application thereof
CN112159827B (en) * 2020-10-16 2022-03-08 福建环海生物科技股份有限公司 Production process of agar oligosaccharide

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101019666B (en) * 2007-03-23 2010-09-08 广东药学院 Asparagus and its processing method and application
CN101397346B (en) * 2008-09-17 2010-08-11 上海海洋大学 Method for preparing asparagus pure polysaccharide having immunoregulation role
CN101845102B (en) * 2010-06-22 2011-12-21 中国烟草总公司郑州烟草研究院 Preparation of asparagus rough polysaccharide and application thereof in cigarette

Also Published As

Publication number Publication date
CN104086664A (en) 2014-10-08

Similar Documents

Publication Publication Date Title
CN102964461B (en) Auxiliary extraction method of biological enzyme for improving dissolution rate of dendrobe bioactive polysaccharide
CN101412703B (en) Composite extracting technique for coproduction of mulberry tea flavone, polysaccharide and alkaloid
CN101747446B (en) Method for extracting anti-fatigue acidic ginseng polysaccharide
CN104086664B (en) Gracilaria lemaneiformis polysaccharide extract and preparation method and application thereof
CN101961371B (en) Method for extracting and separating ginsenoside, flavone and polysaccharide from sweet gynostemma pentaphylla
CN106905440A (en) The new method that a kind of tremella polysaccharides is extracted
CN103059162B (en) A kind of novel method of high efficiency extraction lentinan
CN106046192A (en) Process for extracting pachyman from poria coccus wolf
CN105483183A (en) Preparation method of sargassum oligosaccharide and application of sargassum oligosaccharide in hypoglycemic drugs
CN107557421A (en) A kind of method of the effective component extracting from ganoderma lucidum
CN103638089B (en) A kind of method utilizing microwave-compound enzyme coupled method to extract alpha-amylase inhibitor from Semen Phaseoli Vulgaris
CN106720752A (en) Camellia chrysantha beverage and preparation method thereof
CN101544998A (en) Separation and purification preparation method and antineoplastic activity of tea polysaccharide
CN1858068A (en) Method for preparing pollen pini polyose, pollen pipe polyose and its use in medicine
CN101225421A (en) Novel process for extracting golden fungus polysaccharides by step enzyme method
CN106748923B (en) A kind of method that alliin is extracted from black garlic
CN104262500B (en) It is a kind of that there is immunocompetent novel red support dictyophora fungus polysaccharide and its preparation method and application
CN103739731A (en) Method for removing pesticide residue and heavy metal residue out of lentinan by using resin adsorption method
CN105777921A (en) Astragalus polysaccharide extraction process and application thereof
CN104774827A (en) Method for preparing alginate lyase from abalone internal organs
CN101899120A (en) Method for refining jujube polysaccharide
CN102885847B (en) Uses of camellia oleifera cake polysaccharide
CN110013508A (en) A kind of Traditional Chinese medicinal liquor improving antitumor immunity
CN104945533B (en) A kind of preparation method of active corn stigma holosaccharide
CN107163163A (en) A kind of processing method of chondroitin sulfate product

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20190718

Address after: 516600 Intersection of Industrial Avenue and Wenhua Road, Shanwei City, Guangdong Province (behind Laodetou Trading Company)

Patentee after: SHANWEI WEIMING BIOTECHNOLOGY CO.,LTD.

Address before: Nansha District Avenue South Ring of 511458 cities in Guangdong province Guangzhou City, No. 25 Hua Da Guangzhou production and Research Institute

Patentee before: South China University of Technology

TR01 Transfer of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A Gracilaria lemaneiformis polysaccharide extract and its preparation method and Application

Effective date of registration: 20201225

Granted publication date: 20170125

Pledgee: Yuecai Inclusive Finance (Shanwei) Financing Guarantee Co.,Ltd.

Pledgor: SHANWEI WEIMING BIOTECHNOLOGY Co.,Ltd.

Registration number: Y2020440000421

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20220113

Granted publication date: 20170125

Pledgee: Yuecai Inclusive Finance (Shanwei) Financing Guarantee Co.,Ltd.

Pledgor: SHANWEI WEIMING BIOTECHNOLOGY CO.,LTD.

Registration number: Y2020440000421

PC01 Cancellation of the registration of the contract for pledge of patent right
CP03 Change of name, title or address

Address after: 516600 Intersection of Industrial Avenue and Wenhua Road in Shanwei City, Guangdong Province (behind Laodetou Trading Company)

Patentee after: SHANWEI WEIMING BIOTECHNOLOGY CO.,LTD.

Address before: 516600 intersection of TONGHANG road and Wenhua Road, Industrial Avenue, Shanwei City, Guangdong Province (behind laodetou trading company)

Patentee before: SHANWEI WEIMING BIOTECHNOLOGY CO.,LTD.

CP03 Change of name, title or address
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170125

CF01 Termination of patent right due to non-payment of annual fee