CN109328875A - A kind of Cordyceps militaris shaking flask bacterium culture medium and preparation method thereof containing lotus root starch - Google Patents

A kind of Cordyceps militaris shaking flask bacterium culture medium and preparation method thereof containing lotus root starch Download PDF

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Publication number
CN109328875A
CN109328875A CN201811306719.2A CN201811306719A CN109328875A CN 109328875 A CN109328875 A CN 109328875A CN 201811306719 A CN201811306719 A CN 201811306719A CN 109328875 A CN109328875 A CN 109328875A
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China
Prior art keywords
lotus root
root starch
culture medium
cordyceps militaris
shaking flask
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Pending
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CN201811306719.2A
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Chinese (zh)
Inventor
刘娜
肖千明
宋�莹
张敏
刘岩岩
李红
肖军
肇莹
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Liaoning Academy of Agricultural Sciences
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Liaoning Academy of Agricultural Sciences
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Priority to CN201811306719.2A priority Critical patent/CN109328875A/en
Publication of CN109328875A publication Critical patent/CN109328875A/en
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G18/00Cultivation of mushrooms
    • A01G18/40Cultivation of spawn
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G18/00Cultivation of mushrooms
    • A01G18/20Culture media, e.g. compost

Abstract

The invention belongs to culture medium of edible fungus fields, and in particular to a kind of Cordyceps militaris shaking flask bacterium culture medium and preparation method thereof containing lotus root starch.The culture medium primary raw material has glucose, potassium dihydrogen phosphate, magnesium sulfate, peptone, lotus root starch, potato, water.The present invention joined lotus root starch in liquid spawn culture medium formula, accelerate mycelial growth rate, bacterium ball is tiny dense, and dry weight is big.This formula is prepared simply, for not only increasing liquid spawn quality in producing, is also shortened growth cycle, is suitable for Cordyceps militaris shaking flask strain and produces.

Description

A kind of Cordyceps militaris shaking flask bacterium culture medium and preparation method thereof containing lotus root starch
Technical field
The invention belongs to culture medium of edible fungus field, in particular to a kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch and Preparation method.
Background technique
Cordyceps militaris also known as Cordceps militaris, scientific name northern Chinese caterpillar Fungus, because of its chemical component and pharmacological action and cordyceps sinensis phase Seemingly, clinically often it is used as medicine instead of cordyceps sinensis.Large-scale artificial culture and submerged fermentation, large-scale artificial training have been realized at present It supports and provides a large amount of cordyceps militaris sporocarp for people, and raw material can be provided to extract effective active material, and people can To pass through submerged fermentation effective component extracting directly from fermentation liquid.In cultivation practices, the process of strain is made are as follows: test tube bacterium Kind → shaking flask strain → fermentor, the strain of fermentor can be directly used in cultivation after dilution, entire strain produce by Grade expands numerous, it can be seen that high quality, high standard shaking flask strain be an important link in production.So-called shaking flask strain is just It is liquid spawn, is frequently referred to second class inoculum in production.Can the quality of shaking flask strain performance be numerous to the expansion of later period strain, and cultivate Grass has direct influence out.The present invention seeks to increase the culture medium prescription of suitable shaking flask strain to improve the matter of strain Amount guarantees the needs of Cordyceps militaris shaking flask strain production.
The process of lotus root starch used: fresh lotus rhizome-cleaning-crushing-filter-is removed sand purification-concentration purification- Dehydration-drying.The nutritive value of lotus root starch is very high, rich in the microelements such as iron, calcium, phytoprotein, vitamin, glucose with And content of starch is also very abundant.By consulting a large amount of documents and materials, do not find for lotus root starch to be used for Cordyceps militaris shaking flask Spawn incubation Report in base.
Summary of the invention
The present invention provides a kind of Cordyceps militaris shaking flask bacterium culture medium and preparation method thereof containing lotus root starch, this formula is exactly normal It joined lotus root starch in the liquid formulations of rule, it is convenient to prepare, and low in cost, actual operation is simple.
To achieve the above object, the present invention adopts the following technical scheme that.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, formula include following components: glucose, potassium dihydrogen phosphate, Magnesium sulfate, peptone, lotus root starch, potato, water.
The Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphorus Acid dihydride potassium 3g, magnesium sulfate 1.5g, peptone 3g, lotus root starch 1-7.5g, potato 200g, water 1000mL.
The Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphorus Acid dihydride potassium 3g, magnesium sulfate 1.5g, lotus root starch 1-7.5g, potato 200g, water 1000mL.
The preparation method of the Cordyceps militaris shaking flask liquid spawn culture medium containing lotus root starch, includes the following steps.
(1) it after peeling potatoes, will first be cut into small pieces to be put into 1000mL water and be cooked, boil thoroughly well cooked but not mushy, four layers of gauze Filter to take juice.
(2) by glucose, potassium dihydrogen phosphate, magnesium sulfate, peptone, weigh up in proportion after, be put into filtered horse in (1) In bell potato juice, stirring evenly melts drug all, to constant volume to 900mL.
(3) it after stirring lotus root starch with 30 DEG C of 100mL or less cold water, is added in (2) and is sufficiently stirred evenly in the liquid of constant volume, point It is not fitted into the triangular flask of 250mL, every bottle of 100mL, covers sealed membrane or rubber plug, 121 DEG C~126 DEG C high pressure sterilizations, sterilizing 30min。
Compared with the prior art, beneficial effects of the present invention.
The lotus root starch in Cordyceps militaris shaking flask bacterium culture medium in the present invention include phytoprotein, vitamin, glucose and Starch, rich in microelements such as iron, calcium.Carbon source is to be capable of providing carbon skeleton in cordyceps mycelium composition cell and metabolite to come The nutriment in source;Grape sugar and starch in lotus root starch can be used as the carbon source of Cordyceps militaris mycelia growth.Nitrogen source is cordyceps The raw material of nucleic acid needed for mycelial growth and protein synthesis;Phytoprotein in lotus root starch can be used as the growth of Cordyceps militaris mycelia Nitrogen source.Cordyceps mycelium also needs vitamin and microelement in growth and development, and the nutritional ingredient in lotus root starch also can Meet;So lotus root starch can not only serve as carbon source, but also may act as nitrogen source and vitamin and microelement, it can directly be influenced The biomass of cordyceps mycelium.
Strain particle using the Cordyceps militaris Shake flask medium containing lotus root starch is small, and strain amount is big, and mycelial growth rate is fast, raw Long period is short.Hypha growth condition and full bottle time from test, while measuring bacterium ball size, Peloton density, mycelium The indexs such as dry weight, generally effect are obvious, improve strain quality.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
Embodiment 1.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphoric acid Potassium dihydrogen 3g, magnesium sulfate 1.5g, peptone 3g, lotus root starch 1g, potato 200g, water 1000mL.
Cordyceps militaris shaking flask bacterium culture medium preparation method, includes the following steps.
(1) it after peeling potatoes, will first be cut into small pieces to be put into 1000mL water and be cooked, boil thoroughly well cooked but not mushy, four layers of gauze Filter to take juice.
(2) by glucose, potassium dihydrogen phosphate, magnesium sulfate, peptone, weigh up in proportion after, be put into above-mentioned filtered horse In bell potato juice, stirring evenly melts drug all, constant volume to 900mL.
(3) it after stirring lotus root starch with 30 DEG C of 100mL or less cold water, is added in the liquid of above-mentioned constant volume and sufficiently stirs evenly, respectively It is fitted into the triangular flask of 250mL, every bottle of 100mL, covers sealed membrane or rubber plug, 121 DEG C~126 DEG C high pressure sterilizations, sterilizing 30min is inoculated with after cooling.
(4) Φ 6mm is taken to be inoculated in (3) in sterilized shaking flask bacterium culture medium with punch the strain after activation, It is put into 20 DEG C of incubator half-light static gas wave refrigerators for 24 hours, observes whether bacterium solution has muddiness during half-light culture, place into 20 afterwards for 24 hours DEG C shaking table (150r/min), mycelia is not slowly long in the training period or peculiar smell occur is contaminated bacteria bottle, the shaking flask bacterium grown Kind carries out plate culture and microexamination to find the pollution whether there is or not bacterium and mould in time, guarantees strain quality.
Embodiment 2.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphoric acid Potassium dihydrogen 3g, magnesium sulfate 1.5g, peptone 3g, lotus root starch 2.5g, potato 200g, water 1000mL.
Cordyceps militaris shaking flask bacterium culture medium preparation method is the same as embodiment 1.
Embodiment 3.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphoric acid Potassium dihydrogen 3g, magnesium sulfate 1.5g, peptone 3g, lotus root starch 5g, potato 200g, water 1000mL.
Cordyceps militaris shaking flask bacterium culture medium preparation method is the same as embodiment 1.
Embodiment 4.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphoric acid Potassium dihydrogen 3g, magnesium sulfate 1.5g, peptone 3g, lotus root starch 7.5g, potato 200g, water 1000mL.
Cordyceps militaris shaking flask bacterium culture medium preparation method is the same as embodiment 1.
Embodiment 5.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphoric acid Potassium dihydrogen 3g, magnesium sulfate 1.5g, lotus root starch 1g, potato 200g, water 1000mL.
Cordyceps militaris shaking flask bacterium culture medium preparation method is the same as embodiment 1.
Embodiment 6.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphoric acid Potassium dihydrogen 3g, magnesium sulfate 1.5g, lotus root starch 2.5g, potato 200g, water 1000mL.
Cordyceps militaris shaking flask bacterium culture medium preparation method is the same as embodiment 1.
Embodiment 7.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphoric acid Potassium dihydrogen 3g, magnesium sulfate 1.5g, lotus root starch 5g, potato 200g, water 1000mL.
Cordyceps militaris shaking flask bacterium culture medium preparation method is the same as embodiment 1.
Embodiment 8.
A kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, raw material are as follows by weight ratio: glucose 20g, phosphoric acid Potassium dihydrogen 3g, magnesium sulfate 1.5g, lotus root starch 7.5g, potato 200g, water 1000mL.
Cordyceps militaris shaking flask bacterium culture medium preparation method is the same as embodiment 1.
It compares conventional formulation (CK1): glucose 20g, potassium dihydrogen phosphate 3g, magnesium sulfate 1.5g, peptone 3g, potato 200g, water 1000mL.
It compares conventional formulation (CK2): glucose 20g, potassium dihydrogen phosphate 3g, magnesium sulfate 1.5g, potato 200g, water 1000mL。
Cordyceps militaris shaking flask bacterium culture medium preparation method is the same as embodiment 1.
As a result be analyzed as follows.
It joined different amounts of lotus root starch in formula 1-4 conventional formulation as can be seen from the table, be formulated in 5-8 and use lotus root starch generation It joined different amounts of lotus root starch for nitrogen source peptone, be added to the culture medium of lotus root starch, Peloton density, bacterium bulb diameter, mycelia soma Variation is obvious again.Testing sieve be comprehensively compared select that be suitable for the formula of cordyceps mycelium growth be 6 and 7, lotus root starch additive amount point Not Wei 2.5g/L and 5g/L, both formulas are better than other culture medium prescriptions and comparative formula, and lotus root starch is matched as nitrogen source ratio It is good that peptone effect is added in side.

Claims (4)

1. a kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, which is characterized in that formula includes following components: glucose, phosphorus Acid dihydride potassium, magnesium sulfate, peptone, lotus root starch, potato, water.
2. a kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch as described in claim 1, which is characterized in that its raw material is by weight Amount proportion it is as follows: glucose 20g, potassium dihydrogen phosphate 3g, magnesium sulfate 1.5g, peptone 3g, lotus root starch 1-7.5g, potato 200g, Water 1000mL.
3. a kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch as described in claim 1, which is characterized in that its raw material is by weight Amount proportion is as follows: glucose 20g, potassium dihydrogen phosphate 3g, magnesium sulfate 1.5g, lotus root starch 1-7.5g, potato 200g, water 1000mL.
4. a kind of Cordyceps militaris shaking flask bacterium culture medium containing lotus root starch, which is characterized in that the preparation method of culture medium, including following step It is rapid:
(1) it after peeling potatoes, will first be cut into small pieces to be put into 1000mL water and be cooked, boil thoroughly well cooked but not mushy, four layers of filtered through gauze Take juice;
(2) by glucose, potassium dihydrogen phosphate, magnesium sulfate, peptone, weigh up in proportion after, be put into filtered potato in (1) In juice, stirring evenly melts drug all, to constant volume to 900mL;
(3) it after stirring lotus root starch with 30 DEG C of 100mL or less cold water, is added in (2) and is sufficiently stirred evenly in the liquid of constant volume, filled respectively Enter in the triangular flask of 250mL, every bottle of 100mL, covers sealed membrane or rubber plug, 121 DEG C~126 DEG C high pressure sterilizations, sterilize 30min.
CN201811306719.2A 2018-11-05 2018-11-05 A kind of Cordyceps militaris shaking flask bacterium culture medium and preparation method thereof containing lotus root starch Pending CN109328875A (en)

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Application publication date: 20190215