CN105950474A - Tricholoma lobayense Heim strain low-temperature preservation and thawing method - Google Patents
Tricholoma lobayense Heim strain low-temperature preservation and thawing method Download PDFInfo
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- CN105950474A CN105950474A CN201610308333.XA CN201610308333A CN105950474A CN 105950474 A CN105950474 A CN 105950474A CN 201610308333 A CN201610308333 A CN 201610308333A CN 105950474 A CN105950474 A CN 105950474A
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- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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Abstract
The invention discloses a tricholoma lobayense Heim strain low-temperature preservation and thawing method. The tricholoma lobayense Heim strain low-temperature preservation and thawing method is characterized by comprising the following steps: (1) carrying out low-temperature preservation on the strain, namely, taking 1.5ml of tricholoma lobayense Heim liquid strain, adding 0.5ml of 1% of xanthan gum protective liquid into the tricholoma lobayense Heim liquid strain, and carrying out freezing preservation in a liquid tube at -20 DEG C; and (2) carrying out thawing, namely, taking the strain after freezing preservation, immediately placing the strain after freezing preservation into water at 35-40 DEG C, carrying out shaking for rapid thawing, inoculating the thawed strain into a GPY solid medium, and carrying out constant temperature incubation at 28 DEG C. With the adoption of the method, the tricholoma lobayense Heim strain has high activity without degeneration, the operation is simple and convenient, the price is low, the requirements on the device are low, the occupied space is small, and the popularization is easy.
Description
Technical field:
The present invention relates to a kind of Tricholoma lobayense Heim strain low-temperature preservation and defreezing method, relate to Microbiological Culture Collection technical field.
Background technology:
Tricholoma lobayense Heim( Tricholoma Lobayensc Heim ), have another name called Tricholoma Giganteum Massee, DABAI Tricholoma mongolicum Imai, belong to Basidiomycota, gill fungi guiding principle, Agaricales, mushroom section, Lentinus；Being the edible fungi rising star taming successfully cultivation in recent years, its sporophore is contained within rich in protein and crude fibre, and sporophore fertilizer is tender, tasty mouthfeel, and storage property is good, is deeply liked by consumers in general；Because it is high temperature mushroom, so can be with other low temperature mushrooms by mixed culture in season；Applicable cultivation matrix is relatively wide, and biological transformation ratio is higher, remarkable in economical benefits；Expert thinks both at home and abroad, and Tricholoma lobayense Heim cultivation has the prospect of light.Good mushroom kind more needs excellent, easy culture presevation mode, thus promotes the development of industry.
The most conventional culture presevation mode is Liquid nitrogen, lyophilization preservation, paraffin oil preserves, test tube slant passes on preservation etc..
Although Liquid nitrogen, lyophilization store method are respond well, but it needs good equipment and technology, puts into too high, is not suitable for promoting in enterprise；Although it is simple, cheap that paraffin oil preserves, test tube slant passes on store method, but the holding time is short, at set intervals must again tube, pass on, this is little for the bacterial strain impact that hereditary stability is higher, but the bacterial strain poor for hereditary stability then affects the biggest, can too much cause culture medium shrink, microbiological contamination, spawn degeneration due to preservation time length and switching number of times, and both approaches takes up room, volume is big, needs to be equipped with more refrigerating equipment space.
Liquid line cryopreservation methods is simple to operate, the area that takes up room is little, the preservation time is long, but is not particularly suited for all edible fungus species preservations.Many edible fungus species freezings can be lethal.Liquid line is frozen is divided into-20 DEG C frozen (normal domestic use refrigerators) and-70 DEG C frozen (ultra cold storage freezer) two kinds.The frozen effect of ultra cold storage freezer is more preferable, but equipment price is expensive, is seldom equipped with in enterprise；And domestic refrigerator is cheap, business unit is generally equipped with.So-20 DEG C of liquid line freezing methods of research strain, more there is promotional value.
Summary of the invention:
It is an object of the invention to overcome the deficiency of above-mentioned prior art and provide a kind of keep that Tricholoma lobayense Heim spawn activity is high, do not degenerate, easy and simple to handle, cheap, equipment requirements is low, the Tricholoma lobayense Heim strain low-temperature preservation that takes up space little, easy to spread and defreezing method.
The purpose of the present invention can be reached by following measure: a kind of Tricholoma lobayense Heim strain low-temperature preservation and defreezing method, it is characterised in that it comprises the steps:
(1) strain low-temperature preservation: depletion good fortune mushroom liquid strain 1.5ml, adds the xanthan gum protection liquid of 1% concentration of 0.5ml ,-20 DEG C of liquid line freezings；
(2) thaw: take frozen kind, be immediately placed in the water of 35-40 DEG C, rock quick-thawing, then proceed to GPY solid medium, 28 DEG C of constant temperature culture.
In order to realize the purpose of the present invention further, it is characterised in that it comprises the steps:
(1) strain low-temperature preservation:
1. the cultivation of Tricholoma lobayense Heim liquid spawn:
Under aseptic condition, picking soybean grain size Tricholoma lobayense Heim test tube kind, it is inoculated in GPY fluid medium, the recipe ingredient of GPY fluid medium is calculated as with g/L: yeast extract 10, peptone 6, glucose 20, excess water；28 DEG C, 160rpm constant temperature culture 8 days；
2. the preparation of liquid is protected:
Prepare the xanthan gum of 1% concentration as protection liquid: accurately weigh 1g xanthan gum solid, be dissolved in 100ml water, 121 DEG C, sterilizing 30min；
3. in superclean bench, use sterile working, in different 2ml cryopreservation tubes, add the xanthan gum protection liquid of 1% concentration of 0.5ml-1.5ml with liquid-transfering gun respectively, be subsequently adding ready Tricholoma lobayense Heim liquid spawn 0.5ml-1.5ml；
4. ready cryopreservation tube strain is put into freezing storing box, be placed in-20 DEG C of freezings；
(2) thaw:
1. take out frozen Tricholoma lobayense Heim strain, be immediately placed in the thermostat water bath of 35-40 DEG C, rock quick-thawing, until all thawing；
2. taking 0.5ml preservation of bacteria strain, sterile working moves to 28 DEG C of constant temperature culture on GPY solid medium, Observe and measure mycelial growth situation.
The present invention can produce following good effect compared with the prior art:
1. use-20 DEG C of freezing preserving processes, carry out cold preservation by adding protective agent low temperature.Its equipment needed thereby condition and operation sequence, well below liquid nitrogen storage, only need a general refrigerator just can complete.
2. after by screening protection liquid and concentration thereof, being mixed with strain by protection liquid, being positioned over-20 DEG C preserves; need not supplement liquid nitrogen, periodically activate without as Secondary Culture, method for preserving is simple and easy to do; cheap, it is highly suitable to be applied for common R&D institution and vast production unit.
3. being preserved in 2ml cryopreservation tube, take preservation volume little, the freezing storing box of 100 square centimeters can fill 100 cryopreservation tubes.
4. can classify by box, the used time takes out a pipe, convenient management.
5. holding time more than 2 years, it is not necessary to periodically pass on, reduce microbiological contamination and the probability of spawn degeneration.
6. using the xanthan gum of 1% concentration as protection liquid, xanthan gum is the biomacromolecule that microorganism produces, nontoxic, it is easy to degraded, wide material sources.There is quick water absorbing capacity, absorb extracellular moisture, increase viscosity, make bacterium solution suspend, reduce the formation of ice crystal, make the thorn-like ice crystal tip rust of formation simultaneously, thus the ice crystal reducing the formation of ECW low temperature punctures the probability of cell；Reduce electrolyte concentration in solution, reduce solute damage；Xanthan gum is to be produced by microbial capsular, has protective effect for microorganism itself, and it is affected less by the condition such as pH, salt.Research shows, xanthan gum is when temperature is increased to 120 DEG C, and its viscosity only declines 3%, the high temperature sterilize link being especially suitable in preserving process.Xanthan gum wide material sources, low price, preservation effect is good.
7. the condition of culture such as used medium and temperature, the result drawn after being test, it is suitable for Tricholoma lobayense Heim mycelial growth.
Detailed description of the invention: below the detailed description of the invention of the present invention is elaborated:
Embodiment 1:
(1) strain low-temperature preservation:
1. the cultivation of Tricholoma lobayense Heim liquid spawn:
Under aseptic condition, picking soybean grain size Tricholoma lobayense Heim test tube kind, it is inoculated in GPY fluid medium, the recipe ingredient of GPY fluid medium is calculated as with g/L: yeast extract 10, peptone 6, glucose 20, excess water；28 DEG C, 160rpm constant temperature culture 8 days.
2. the preparation of liquid is protected:
Prepare the xanthan gum of 1% concentration as protection liquid: accurately weigh 1g xanthan gum solid, be dissolved in 100ml water, 121 DEG C, sterilizing 30min.
3. in superclean bench, use sterile working, in different 2ml cryopreservation tubes, add the xanthan gum protection liquid of 1% concentration of 0.5ml with liquid-transfering gun respectively, be subsequently adding ready Tricholoma lobayense Heim liquid spawn 1.5ml.
4. ready cryopreservation tube strain is put into freezing storing box, be placed in-20 DEG C of freezings.
(2) thaw:
1. taking out frozen Tricholoma lobayense Heim strain, be immediately placed in the thermostat water bath of 35-40 DEG C, rock quick-thawing, until all thawing, reducing the ice crystal the formed injury to cell as far as possible.
2. taking 0.5ml preservation of bacteria strain, sterile working moves to 28 DEG C of constant temperature culture on GPY solid medium, Observe and measure mycelial growth situation.
Embodiment 2:
(1) strain low-temperature preservation:
1. the cultivation of Tricholoma lobayense Heim liquid spawn:
Under aseptic condition, picking soybean grain size Tricholoma lobayense Heim test tube kind, it is inoculated in GPY fluid medium, the recipe ingredient of GPY fluid medium is calculated as with g/L: yeast extract 10, peptone 6, glucose 20, excess water；28 DEG C, 160rpm constant temperature culture 8 days.
2. the preparation of liquid is protected:
Prepare the xanthan gum of 1% concentration as protection liquid: accurately weigh 1g xanthan gum solid, be dissolved in 100ml water, 121 DEG C, sterilizing 30min.
3. in superclean bench, use sterile working, in different 2ml cryopreservation tubes, add the xanthan gum protection liquid of 1% concentration of 1ml with liquid-transfering gun respectively, be subsequently adding ready Tricholoma lobayense Heim liquid spawn 1ml.
4. ready cryopreservation tube strain is put into freezing storing box, be placed in-20 DEG C of freezings.
(2) thaw:
1. taking out frozen Tricholoma lobayense Heim strain, be immediately placed in the thermostat water bath of 35-40 DEG C, rock quick-thawing, until all thawing, reducing the ice crystal the formed injury to cell as far as possible.
2. taking 0.5ml preservation of bacteria strain, sterile working moves to 28 DEG C of constant temperature culture on GPY solid medium, Observe and measure mycelial growth situation.
Embodiment 3:
(1) strain low-temperature preservation:
1. the cultivation of Tricholoma lobayense Heim liquid spawn:
Under aseptic condition, picking soybean grain size Tricholoma lobayense Heim test tube kind, it is inoculated in GPY fluid medium, the recipe ingredient of GPY fluid medium is calculated as with g/L: yeast extract 10, peptone 6, glucose 20, excess water；28 DEG C, 160rpm constant temperature culture 8 days.
2. the preparation of liquid is protected:
Prepare the xanthan gum of 1% concentration as protection liquid: accurately weigh 1g xanthan gum solid, be dissolved in 100ml water, 121 DEG C, sterilizing 30min.
3. in superclean bench, use sterile working, in different 2ml cryopreservation tubes, add the xanthan gum protection liquid of 1% concentration of 1.5ml with liquid-transfering gun respectively, be subsequently adding ready Tricholoma lobayense Heim liquid spawn 0.5ml.
4. ready cryopreservation tube strain is put into freezing storing box, be placed in-20 DEG C of freezings.
(2) thaw:
1. taking out frozen Tricholoma lobayense Heim strain, be immediately placed in the thermostat water bath of 35-40 DEG C, rock quick-thawing, until all thawing, reducing the ice crystal the formed injury to cell as far as possible.
2. taking 0.5ml preservation of bacteria strain, sterile working moves to 28 DEG C of constant temperature culture on GPY solid medium, Observe and measure mycelial growth situation.
Above embodiment is only to be described the preferred embodiment of the present invention; not the scope of the present invention is defined; on the premise of designing spirit without departing from the present invention; various deformation that technical scheme is made by this area ordinary skill technical staff and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (2)
1. a Tricholoma lobayense Heim strain low-temperature preservation and defreezing method, it is characterised in that it comprises the steps:
(1) strain low-temperature preservation: depletion good fortune mushroom liquid strain 1.5ml, adds the xanthan gum protection liquid of 1% concentration of 0.5ml ,-20 DEG C of liquid line freezings；
(2) thaw: take frozen kind, be immediately placed in the water of 35-40 DEG C, rock quick-thawing, then proceed to GPY solid medium, 28 DEG C of constant temperature culture.
A kind of Tricholoma lobayense Heim strain low-temperature preservation the most according to claim 1 and defreezing method, it is characterised in that it comprises the steps:
(1) strain low-temperature preservation:
1. the cultivation of Tricholoma lobayense Heim liquid spawn:
Under aseptic condition, picking soybean grain size Tricholoma lobayense Heim test tube kind, it is inoculated in GPY fluid medium, the recipe ingredient of GPY fluid medium is calculated as with g/L: yeast extract 10, peptone 6, glucose 20, excess water；28 DEG C, 160rpm constant temperature culture 8 days；
2. the preparation of liquid is protected:
Prepare the xanthan gum of 1% concentration as protection liquid: accurately weigh 1g xanthan gum solid, be dissolved in 100ml water, 121 DEG C, sterilizing 30min；
3. in superclean bench, use sterile working, in different 2ml cryopreservation tubes, add the xanthan gum protection liquid of 1% concentration of 0.5ml-1.5ml with liquid-transfering gun respectively, be subsequently adding ready Tricholoma lobayense Heim liquid spawn 0.5ml-1.5ml；
4. ready cryopreservation tube strain is put into freezing storing box, be placed in-20 DEG C of freezings；
(2) thaw:
1. take out frozen Tricholoma lobayense Heim strain, be immediately placed in the thermostat water bath of 35-40 DEG C, rock quick-thawing, until all thawing；
2. taking 0.5ml preservation of bacteria strain, sterile working moves to 28 DEG C of constant temperature culture on GPY solid medium, Observe and measure mycelial growth situation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610308333.XA CN105950474A (en) | 2016-05-11 | 2016-05-11 | Tricholoma lobayense Heim strain low-temperature preservation and thawing method |
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| CN201610308333.XA CN105950474A (en) | 2016-05-11 | 2016-05-11 | Tricholoma lobayense Heim strain low-temperature preservation and thawing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394252A (en) * | 2020-03-27 | 2020-07-10 | 江苏华绿生物科技股份有限公司 | Preservation strain activation transfer method |
| CN114276934A (en) * | 2021-12-22 | 2022-04-05 | 山东恒信生物科技有限公司 | Preservation method of flammulina velutipes strains |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667061A (en) * | 2013-11-21 | 2014-03-26 | 宁夏启元药业有限公司 | Strain preservation method |
| CN105238693A (en) * | 2015-10-28 | 2016-01-13 | 上海市农业科学院 | Conventional low-temperature preservation method of volvariella volvacea strain |
-
2016
- 2016-05-11 CN CN201610308333.XA patent/CN105950474A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667061A (en) * | 2013-11-21 | 2014-03-26 | 宁夏启元药业有限公司 | Strain preservation method |
| CN105238693A (en) * | 2015-10-28 | 2016-01-13 | 上海市农业科学院 | Conventional low-temperature preservation method of volvariella volvacea strain |
Non-Patent Citations (1)
| Title |
|---|
| F.GARCIA-OCHOA ET AL: "Xanthan gum: production, recovery, and properties", 《BIOTECHNOLOGY ADVANCES》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394252A (en) * | 2020-03-27 | 2020-07-10 | 江苏华绿生物科技股份有限公司 | Preservation strain activation transfer method |
| CN114276934A (en) * | 2021-12-22 | 2022-04-05 | 山东恒信生物科技有限公司 | Preservation method of flammulina velutipes strains |
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Application publication date: 20160921 |