CN102936609B - Preparation method of swift moth paecilomyces varioti extracellular acid glycoprotein - Google Patents

Preparation method of swift moth paecilomyces varioti extracellular acid glycoprotein Download PDF

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CN102936609B
CN102936609B CN201210434092.5A CN201210434092A CN102936609B CN 102936609 B CN102936609 B CN 102936609B CN 201210434092 A CN201210434092 A CN 201210434092A CN 102936609 B CN102936609 B CN 102936609B
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acid glycoprotein
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preparation
peacilomyce hepiahi
paecilomyces varioti
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CN102936609A (en
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曾晓雄
武忠伟
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Nanjing Agricultural University
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Nanjing Agricultural University
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Abstract

The invention relates to a preparation method of swift moth paecilomyces varioti extracellular acid glycoprotein. The method includes culturing first-level seeds of swift moth paecilomyces varioti bacterial strains, conducting inoculated fermentation to obtain swift moth paecilomyces varioti fermentation liquid, conducting work procedures including ethanol precipitation, deionized water redissolution, deproteinization, freezing, drying, diethyl-aminoethanol (DEAE)-52 column chromatography and the like on the fermentation liquid to extract the swift moth paecilomyces varioti extracellular acid glycoprotein. The preparation method has the advantages of being simple in process, mild in extraction condition, low in cost, environment-friendly, apt to industrial production and the like. The obtained swift moth paecilomyces varioti extracellular acid glycoprotein can serve as raw materials of medicines and health food.

Description

The preparation method of the outer acid glycoprotein of a kind of peacilomyce hepiahi born of the same parents
Technical field
The present invention relates to bat moth bacterium Paecilomyces varioti bacterial strain liquid fermenting and from its fermented liquid the separated technical field that obtains acid glycoprotein born of the same parents outside, be specifically related to a kind of peacilomyce hepiahi born of the same parents preparation method of acid glycoprotein outward.
Background technology
Cordyceps sinensis is traditional famous and precious strong, tonic herb of China, and it is that for human being's production and the real huge value of life they can produce the multiple physiologically active substance that has important value in biotechnology and medicines and health protection.Their physiologically active is rich and varied, can be antibacterial, antitumor, antiplatelet condenses, radioprotective, improve memory, regulate body immunity, calcium ion antagonism, brain and heart are had to provide protection, calmness and analgesia etc. under normobaric hypoxia.
Due to the strict parasitics of natural cordyceps and special ecotope requirement, its resource is extremely limited, expensive.In recent years, along with Anamorph of Cordyceps Sinensis progress of research, the research of relevant Anamorph of Cordyceps polysaccharide is just carried out.Cordyceps sinensis can carry out fermentative production by bionic method, Cordyceps mycelium to artificial culture, through chemistry, pharmacological research, proof is basically identical with natural cs, through clinical application for many years, by the world of medicine, be known as the substitute that can be used as Cordyceps sinensis, the People's Republic of China's existing clear and definite regulation of version pharmacopeia in 2000.Meanwhile, the also various bioactivators such as the trace element such as rich in proteins, VITAMIN, zinc, copper and cordycepic acid (D mono-N.F,USP MANNITOL), cordycepin (3 '-deoxyadenosine), polyose, alkaloids, cyclic peptide class, SOD enzyme in Anamorph of Cordyceps fermented liquid.Wherein, polyose is as one of the abundantest most important monoid in the contained physiologically active substance of Cordyceps sinensis, having the different physiological roles such as anti-oxidant, antitumor, hypoglycemic, reducing blood-fat, is an important breakthrough mouth of Cordyceps sinensis development research, has a good application prospect.
Peacilomyce hepiahi (Paecilomyces hepiali) is a kind of of Anamorph of Cordyceps, and this bacterial strain is separated in the natural cs sporophore of Yushu Regions, Qinghai Province in 2002, and DSMZ of the Bing You Chinese Academy of Sciences identifies.The popularity distributing due to Chinese caterpillar fungus and the diversity of anamorphic strain, there is very big-difference in different scientific research institutions to the research of anamorph Chinese caterpillar fungus, and about utilize this strain liquid fermentation and from fermented liquid outside separated born of the same parents the research of acid glycoprotein there is not yet report.
Summary of the invention
The object of the invention aims to provide a kind of method of preparing the outer acid glycoprotein of peacilomyce hepiahi born of the same parents, realizes concrete scheme of the present invention as follows:
(1) from be stored in the mother's kind potato slope substratum, take mycelium piece (size is 0.5cm * 0.5cm), be inoculated in (every bottled seed culture medium 100mL of 250mL triangle) in seed culture medium, at 17 ℃, static cultivation is after 12 hours, under 120rpm, shaking culture is cultivated 72 hours, can obtain seed liquor.Seed culture medium (g/L): sucrose 30.00, yeast extract paste 6.00, potassium primary phosphate 1.50, magnesium sulfate 0.50, wort 10.00, murphy juice 10.00, pH 6.5.
(2) seed liquor of getting in step (1) is inoculated into (every bottled fermention medium 200mL of 500mL triangle) in fermention medium, inoculum size is 1% (V/V), at 17 ℃, static cultivation is after 12 hours, under 120rpm, shaking culture was cultivated after 120 hours, tunning centrifugation (centrifugation condition: 4000rmp, 15min) is obtained to peacilomyce hepiahi fermented liquid.Fermentative medium formula (g/L): sucrose 50.86, yeast extract paste 2.00, ammonium sulfate 6.61, potassium primary phosphate 1.36, magnesium sulfate 0.05, murphy juice 15.00, wort 15.00, pH 6.5;
(3) by the peacilomyce hepiahi fermented liquid obtaining in step (2), 50 ℃ are evaporated to 1/2 of original volume, the dehydrated alcohol that adds 3 times of volumes, precipitate 12 hours, with after 80% washing with alcohol 3 times, centrifugation (centrifugation condition: 4000rmp, 15min), obtains crude extracellular polysaccharide.
(4) crude extracellular polysaccharide that step (3) made ventilates and flings to ethanol, after adding a small amount of deionized water and redissolving, with Sevag method (chloroform: propyl carbinol=4: 1), after deproteinated 3 times, aqueous phase solution lyophilize is obtained to Crude polysaccharides freezing dry powder.
(5) after step (4) gained Crude polysaccharides is dissolved, be splined on DEAE-52 cellulose column, and with deionized water, 0.1mol/LNaCl and 0.3mol/L NaCl, carry out wash-out respectively, the 0.3mol/L NaCl elution fraction of collection is carried out to concentrating under reduced pressure, deionized water dialysis 72 hours, concentrated postlyophilization, obtains the outer acid glycoprotein component of born of the same parents.The outer acid glycoprotein of born of the same parents of preparation is pale powder, and wherein polysaccharide content 80.56%, protein content 18.76%.
(6) the outer acid glycoprotein of step (5) gained born of the same parents is detected to its molecular weight distribution situation with molecular-exclusion chromatography, with Infrared spectroscopy characteristic group, form, with uv scan, determine whether it has protein component.
2, according to patent, require a kind of preparation method with the outer acid glycoprotein of biological activity born of the same parents described in 1, it is characterized in that: the fermentative medium formula (g/L) of described step (2): sucrose 50.86, yeast extract paste 2.00, ammonium sulfate 6.61, potassium primary phosphate 1.36, magnesium sulfate 0.05, murphy juice 15.00, wort 15.00, pH 6.5.
The outer acid glycoprotein of peacilomyce hepiahi born of the same parents of preparation is pale powder, and wherein polysaccharide content 80.56%, protein content 18.76%, the easily moisture absorption.The infrared absorption spectrum of this acid glycoprotein shows that it has polysaccharide, carboxyl, sulfate and amino charateristic avsorption band.The uv-absorbing scanning of the outer acid glycoprotein of these born of the same parents shows the absorption peak that it contains albumen.Molecular weight to the outer glycoprotein of these born of the same parents is measured, and shows that its molecular weight distribution is between 20-80kD.
Accompanying drawing explanation
Fig. 1 substratum forms the impact on the outer acid glycoprotein output of peacilomyce hepiahi born of the same parents
The infrared absorption pattern of the outer acid glycoprotein of Fig. 2 peacilomyce hepiahi born of the same parents
The UV scanning collection of illustrative plates of the outer acid glycoprotein sugar of Fig. 3 peacilomyce hepiahi born of the same parents
Embodiment
Below by embodiment, the invention will be further described.
Embodiment 1:
(1) from be stored in the mother's kind potato slope substratum, take mycelium piece (size is 0.5cm * 0.5cm), be inoculated in (every bottled seed culture medium 100mL of 250mL triangle) in seed culture medium, at 17 ℃, static cultivation is after 12 hours, under 120rpm, shaking culture is cultivated 72 hours, can obtain seed liquor.Seed culture medium (g/L): sucrose 30.00, yeast extract paste 6.00, potassium primary phosphate 1.50, magnesium sulfate 0.50, wort 10.00, murphy juice 10.00, pH 6.5.
(2) seed liquor of getting in step (1) is inoculated into (every bottled fermention medium 200mL of 500mL triangle) in fermention medium, inoculum size is 1% (V/V), at 17 ℃, static cultivation is after 12 hours, under 120rpm, shaking culture was cultivated after 120 hours, tunning centrifugation (centrifugation condition: 4000rmp, 15min) is obtained to peacilomyce hepiahi fermented liquid.Fermentative medium formula (g/L): sucrose 50.86, yeast extract paste 2.00, ammonium sulfate 6.61, potassium primary phosphate 1.36, magnesium sulfate 0.05, murphy juice 15.00, wort 15.00, pH 6.5;
(3) by the peacilomyce hepiahi fermented liquid obtaining in step (2), 50 ℃ are evaporated to 1/2 of original volume, the dehydrated alcohol that adds 3 times of volumes, precipitate 12 hours, with after 80% washing with alcohol 3 times, centrifugation (centrifugation condition: 4000rmp, 15min), obtains crude extracellular polysaccharide.
(4) crude extracellular polysaccharide that step (3) made ventilates and flings to ethanol, after adding a small amount of deionized water and redissolving, with Sevag method (chloroform: propyl carbinol=4: 1), after deproteinated 3 times, aqueous phase solution lyophilize is obtained to Crude polysaccharides freezing dry powder.
(5) after step (4) gained Crude polysaccharides is dissolved, be splined on DEAE-52 cellulose column, and with deionized water, 0.1mol/LNaCl and 0.3mol/L NaCl, carry out wash-out respectively, the 0.3mol/L NaCl elution fraction of collection is carried out to concentrating under reduced pressure, deionized water dialysis 72 hours, concentrated postlyophilization, obtains the outer acid glycoprotein component of born of the same parents.The outer acid glycoprotein of born of the same parents of preparation is pale powder, and wherein polysaccharide content 80.56%, protein content 18.76%.
(6) the outer acid glycoprotein of step (5) gained born of the same parents is detected to its molecular weight distribution situation with molecular-exclusion chromatography, with Infrared spectroscopy characteristic group, form, with uv scan, determine whether it has protein component.
Embodiment 2:
The fermentation condition optimization experiment of the outer acid glycoprotein of peacilomyce hepiahi born of the same parents
(1) the fermentation condition optimization list Factor screening experiment of the outer acid glycoprotein of peacilomyce hepiahi born of the same parents
1. the screening of some factors design to the remarkable factor of fermentation condition.
The outer acid glycoprotein fermentation condition factor of peacilomyce hepiahi born of the same parents and code are: glucose (X 1), Semen Maydis powder (X 2), yeast extract paste (X 3), ammonium sulfate (X 4), KH 2pO 4(X 5), MgSO 4(X 6), murphy juice (X 7), wort (X 8) central point (0) be respectively (g/L): 30,10,2,6,1,0.5,10,10, step-length is respectively: 10,5,1,1,0.5,0.2,5,5.The output of the outer acid glycoprotein of peacilomyce hepiahi born of the same parents of 20 groups of tests is in Table 1.
Table 1 fermention medium significance conditional filtering
Through Design-Expert 7.0 softwares, carry out variance analysis, obtain table 2:
The variance analysis of table 2 fractional factorial design
As can be seen from Table 2, sucrose (X 1), yeast extract paste (X 3), ammonium sulfate (X 4) and potassium primary phosphate (X5) be the significance influence factors of the outer acid glycoprotein output of peacilomyce hepiahi born of the same parents.
But cannot judge sucrose (X from table 1), yeast extract paste (X 3) and ammonium sulfate (X 4) and the remarkable sex concentration central point of potassium primary phosphate (X5) to the outer acid glycoprotein yield of peacilomyce hepiahi born of the same parents.In order further to optimize sucrose (X 1), yeast extract paste (X 3) and ammonium sulfate (X 4) and potassium primary phosphate (X 5) optimum concn and interaction, the present invention adopts response surface method further to test sucrose (X 1), yeast extract paste (X 3) and ammonium sulfate (X 4) and potassium primary phosphate (X 5) optimum concn.
2. response surface method is optimized the outer acid glycoprotein fermentation condition result of peacilomyce hepiahi high yield born of the same parents
Sucrose (X 1), yeast extract paste (X 3) and ammonium sulfate (X 4) and potassium primary phosphate (X 5) central point be respectively (g/L): 50,3,6 and 1.0.Response surface test design and the results are shown in Table 3.According to table 3 result, with Design EXpert7.0 software analysis, obtain multiple regression equation and be:
Y=-37.99+1.84X 1-0.14X 3+1.19X 4+3.53X 5-0.014X 1 2-0.97X 3 2-0.04X 4 2-0.79X 5 2+0.085X 1X 3-0.093X 1X 4-0.018X 1X 5
According to Equation for Calculating, obtaining optimal conditions of fermentation is: the outer acid glycoprotein fermentative medium formula (g/L) of peacilomyce hepiahi high yield born of the same parents: sucrose 50.86, yeast extract paste 2.00, ammonium sulfate 6.61, potassium primary phosphate 1.36, magnesium sulfate 0.05, murphy juice 15.00, wort 15.00, pH 6.5, and the outer acid glycoprotein production peak of born of the same parents can reach 5.33g/L.
The test of table 3 response surface and fermentation condition optimization result

Claims (2)

1. a preparation method for the outer acid glycoprotein of peacilomyce hepiahi (Paecilomyces hepiali) HN1 bacterial strain born of the same parents, is characterized in that comprising following operation steps:
(1) from being stored in the mother of peacilomyce hepiahi (Paecilomyces hepiali) the HN1 bacterial strain of potato slope substratum, taking size planting and be about 0.5cm * 0.5cm mycelium piece, be inoculated in and be equipped with in the triangular flask that the capacity of 100mL seed culture medium is 250mL, consisting of of this seed culture medium: sucrose 30.00g/L, yeast extract paste 6.00g/L, potassium primary phosphate 1.50g/L, magnesium sulfate 0.50g/L, wort 10.00g/L, murphy juice 10.00g/L, pH6.5, then static cultivation after 12 hours at 17 ℃, be placed in again on the shaking table of 120 revs/min shaking culture 72 hours, can obtain seed liquor,
(2) getting seed liquor in step (1) is inoculated in and is equipped with in the triangular flask that the capacity of 200mL fermention medium is 500mL by 1% of fermention medium volume, consisting of of this fermention medium: sucrose 50.86g/L, yeast extract paste 2.00g/L, ammonium sulfate 6.61g/L, potassium primary phosphate 1.36g/L, magnesium sulfate 0.05g/L, murphy juice 15.00g/L, wort 15.00g/L, pH6.5, then static cultivation after 12 hours at 17 ℃, be placed in again on the shaking table of 120 revs/min shaking culture 120 hours, after cultivation finishes by tunning under 4000 revs/min of conditions after centrifugal 15min, collect supernatant liquor and be peacilomyce hepiahi (Paecilomyces hepiali) HN1 bacterial strain fermentation liquor,
(3) by peacilomyce hepiahi (Paecilomyces hepiali) the HN1 bacterial strain fermentation liquor obtaining in step (2), 50 ℃ are evaporated to 1/2 of original volume, the dehydrated alcohol that adds 3 times of volumes, precipitate 12 hours, with after 80% washing with alcohol 3 times, under 4000 revs/min of conditions, centrifugal 15min collecting precipitation can obtain crude extracellular polysaccharide;
(4) crude extracellular polysaccharide that step (3) made ventilates and flings to ethanol, after adding a small amount of deionized water and redissolving, after the mixing solutions deproteinated that is 4: 1 with chloroform and propyl carbinol volume ratio 3 times, by aqueous phase solution lyophilize with acquisition Crude polysaccharides freezing dry powder;
(5) after step (4) gained Crude polysaccharides is dissolved, be splined on DEAE-52 cellulose column, and with deionized water, 0.1mol/LNaCl and 0.3mol/L NaCl, carry out wash-out respectively, the 0.3mol/L NaCl elution fraction of collection is carried out to concentrating under reduced pressure, deionized water dialysis 72 hours, concentrates postlyophilization, can obtain the acid glycoprotein component of pale powder, in this component, polysaccharide content is 80.56%, and protein content is 18.76%;
(6) step (5) gained acid glycoprotein is detected to its molecular weight distribution situation with molecular-exclusion chromatography, with Infrared spectroscopy characteristic group, form, with uv scan, determine whether it has protein component.
2. according to patent, require the preparation method of the outer acid glycoprotein of a kind of peacilomyce hepiahi (Paecilomyces hepiali) HN1 bacterial strain born of the same parents described in 1, it is characterized in that: the fermentative medium formula of described step (2): sucrose 50.86g/L, yeast extract paste 2.00g/L, ammonium sulfate 6.61g/L, potassium primary phosphate 1.36g/L, magnesium sulfate 0.05g/L, murphy juice 15.00g/L, wort 15.00g/L, pH6.5.
CN201210434092.5A 2012-11-05 2012-11-05 Preparation method of swift moth paecilomyces varioti extracellular acid glycoprotein Expired - Fee Related CN102936609B (en)

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CN104911109A (en) * 2015-05-28 2015-09-16 吉林大学 High-yield paecilomyces hepiali mutant strain and cultivation method
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