Summary of the invention:
The objective of the invention is to overcome the deficiency of above-mentioned prior art and a kind of simple to operate, cordycepin content is high a kind of mycelial artificial culture method of Cordyceps militaris that improves cordycepin content of coercing through manganese ion is provided.
The object of the invention can reach through following measure: a kind of mycelial artificial culture method of Cordyceps militaris that improves cordycepin content; It may further comprise the steps: test tube slant spawn culture, test tube strain cultivation, the cultivation of triangular flask liquid seeds, seed tank culture, fermentation tank culture; It is characterized in that in the described fermentation tank culture step when seed tank culture to mycelium recovery rate 0.4-0.8%, changing fermentation tank culture over to, contain 1%-9% manganese sulphate in its medium by weight percentage; 23 ℃ ~ 26 ℃ of temperature; Ventilated 1: 0.5, speed of agitator 120 rpm ~ 150 rpm are cultured to mycelium recovery rate 1.2-1.8%; Medium content of reducing sugar 0.2% o'clock is at the most put jar results.
In order further to carry out the object of the invention, described fermentation tank culture medium is made up of glucose, peptone, yeast extract, manganese sulphate, water.
In order further to carry out the object of the invention, described fermentation tank culture medium is made up of sucrose, corn steep liquor, manganese sulphate, water.
In order further to carry out the object of the invention, described fermentation tank culture medium is made up of corn flour, soybean cake powder, manganese sulphate, water.
In order further to carry out the object of the invention, described fermentation tank culture medium is made up of sucrose, fish meal, manganese sulphate, water.
The present invention compares with prior art can produce following good effect: the applicant is based on to the research of cordyceps filament to the manganese ion enrichment mechanism; Recognize that the cordyceps filament has extremely strong accumulation ability to manganese ion; And find to coerce down at the high concentration manganese ion; Can improve the output of mycelium cordycepin, and best manganese ion concentration scope is arranged.Adopt cultural method of the present invention, not only simple, and cordycepin output is high, cordycepin content exceeds more than 0.8 times in the mycelium that the high concentration manganese ion coerces than not adding.
Embodiment: following specific embodiments of the invention elaborates:
Embodiment 1:
Bacterial classification: Cordyceps militaris spawn Cordyceps militaris 5.270 derives from microorganism fungus kind preservation center, Guangdong Province.
Test tube slant spawn culture (activation) (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, agar powder 15-20g, water 890-971g, its pH value is 5.0-7.0, is sub-packed in the test tube; Cordyceps militaris spawn is inserted the test tube slant under aseptic condition, 15 ~ 30 ℃ of dark cultivations 5-10 days;
Test tube strain cultivation (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, water 910-986g, its pH value is 5.0-7.0, is sub-packed in the test tube sterilization; Insert activation back bevel bacterial classification, 15 ~ 30 ℃, speed of agitator 120rpm cultivated 5 days ~ 10 days;
Carry out the triangular flask liquid seeds and cultivate (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g; Magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, water 910-986 g; Its pH value is 5.0-7.0, the prepared culture medium branch is packed in the 500ml conical flask into every bottled 200ml; Seal the back and under 120 ~ 130 ℃ of conditions, sterilized 18 ~ 30 minutes, take out medium, 5.0-7.0 is cooled to 20 ~ 30 ℃; Every bottle graft is gone into the cultured test tube liquid spawn of 10ml-20ml under aseptic condition, and 15 ~ 30 ℃, speed of agitator 120rpm cultivated 5 days ~ 10 days;
Seed tank culture (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g; Potassium dihydrogen phosphate 1-5g, water 910-986g, its pH value is 5.0-7.0, in batches sterilization; Insert cultured triangular flask liquid spawn, the volume 60%-80% that feeds intake, 15 ~ 30 ℃ of temperature; Ventilated 1: 0.5, and in the 100L seeding tank, cultivated 2-5 days for 15 ~ 30 ℃, and be extended in 10 tons of jars stir culture step by step 2-5 days;
Fermentation tank culture:
When seed tank culture to mycelium recovery rate 0.4-0.8%, change 50 tons of fermentation tank culture over to, feed intake 40 tons, feed intake (medium) is: glucose 800-2000 kg; Peptone 160-400 kg, yeast extract 160-400 kg, manganese sulphate 400 kg-3600kg, water surplus; Its pH value is 5.0-7.0, and 23 ℃ ~ 26 ℃ of temperature were ventilated 1: 0.5, speed of agitator 120 rpm ~ 150 rpm; Be cultured to mycelium recovery rate 1.2-1.8%, medium content of reducing sugar 0.2% o'clock is at the most put jar results.Cordycepin content reaches 2.31mg/g in the mycelium, and cordycepin content reaches 0.69mg/g in the mycelium and do not add under the condition of manganese sulphate, increases by 2.3 times after adding manganese sulphate.
Embodiment 2:
Bacterial classification: Cordyceps militaris spawn Cordyceps militaris 5.701 derives from Chinese common micro-organisms culture presevation administrative center.
Test tube slant spawn culture (activation) (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, agar powder 15-20g, water 890-971g, its pH value is 5.0-7.0, is sub-packed in the test tube; Cordyceps militaris spawn is inserted the test tube slant under aseptic condition, 15 ~ 30 ℃ of dark cultivations 5-10 days;
Test tube strain cultivation (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, water 910-986g, its pH value is 5.0-7.0, is sub-packed in the test tube sterilization; Insert activation back bevel bacterial classification, 15 ~ 30 ℃, speed of agitator 120rpm cultivated 5 days ~ 10 days;
The triangular flask liquid seeds is cultivated (also can cultivate according to other conventional methods):
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g; Magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, water 910-986 g; Its pH value is 5.0-7.0, the prepared culture medium branch is packed in the 500ml conical flask into every bottled 200ml; Seal the back and under 120 ~ 130 ℃ of conditions, sterilized 18 ~ 30 minutes, take out medium, 5.0-7.0 is cooled to 20 ~ 30 ℃; Every bottle graft is gone into the cultured test tube liquid spawn of 10ml-20ml under aseptic condition, and 15 ~ 30 ℃, speed of agitator 120rpm cultivated 5 days ~ 10 days;
Seed tank culture (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g; Potassium dihydrogen phosphate 1-5g, water 910-986g, its pH value is 5.0-7.0, in batches sterilization; Insert cultured triangular flask liquid spawn, the volume 60%-80% that feeds intake, 15 ~ 30 ℃ of temperature; Ventilated 1: 0.5, and in the 100L seeding tank, cultivated 2-5 days for 15 ~ 30 ℃, and be extended in 10 tons of jars stir culture step by step 2-5 days;
Fermentation tank culture:
When seed tank culture to mycelium recovery rate 0.4-0.8%, change 50 tons of fermentation tank culture over to.Feed intake 40 tons, feed intake (medium) is: sucrose 800-2000 kg, fish meal 200-400 kg; Manganese sulphate 400 kg-3600kg, water surplus, its pH value is 5.0-7.0; 23 ℃ ~ 26 ℃ of temperature were ventilated 1: 0.5, speed of agitator 120 rpm ~ 150 rpm; Be cultured to mycelium recovery rate 1.2-1.8%, medium content of reducing sugar 0.2% o'clock is at the most put jar results.Cordycepin content reaches 1.17mg/g in the mycelium, and cordycepin content reaches 0.65mg/g in the mycelium and do not add under the condition of manganese sulphate, has increased by 0.8 times after adding manganese sulphate.
Embodiment 3:
Bacterial classification: Cordyceps militaris spawn Cordyceps militaris 5.270 derives from microorganism fungus kind preservation center, Guangdong Province.
Test tube slant spawn culture (activation) (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 20g, peptone 6g, yeast extract 5g, magnesium sulfate 1g, potassium dihydrogen phosphate 1g, agar powder 15g, water 952g, its pH value is 5.0-7.0, is sub-packed in the test tube; Cordyceps militaris spawn is inserted the test tube slant under aseptic condition, 15 ~ 30 ℃ of dark cultivations 5-10 days;
Test tube strain cultivation (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, water 910-986g, its pH value is 5.0-7.0, is sub-packed in the test tube sterilization; Insert activation back bevel bacterial classification, 15 ~ 30 ℃, speed of agitator 120rpm cultivated 5 days ~ 10 days;
The triangular flask liquid seeds is cultivated (also can cultivate according to other conventional methods):
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g; Magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, water 910-986g; Its pH value is 5.0-7.0, the prepared culture medium branch is packed in the 500ml conical flask into every bottled 200ml; Seal the back and under 120 ~ 130 ℃ of conditions, sterilized 18 ~ 30 minutes, take out medium, 5.0-7.0 is cooled to 20 ~ 30 ℃; Every bottle graft is gone into the cultured test tube liquid spawn of 10ml-20ml under aseptic condition, and 15 ~ 30 ℃, speed of agitator 120rpm cultivated 5 days ~ 10 days;
Seed tank culture (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g; Potassium dihydrogen phosphate 1-5g, water 910-986g, its pH value is 5.0-7.0, in batches sterilization; Insert cultured triangular flask liquid spawn, the volume 60%-80% that feeds intake, 15 ~ 30 ℃ of temperature; Ventilated 1: 0.5, and in the 100L seeding tank, cultivated 2-5 days for 15 ~ 30 ℃, and be extended in 10 tons of jars stir culture step by step 2-5 days;
Fermentation tank culture:
When seed tank culture to mycelium recovery rate 0.4-0.8%, change 50 tons of fermentation tank culture over to.Feed intake 40 tons, feed intake (medium) is: sucrose 800-2000 kg, corn steep liquor 200-1000 kg, manganese sulphate 400 kg-3600kg; Water surplus, its pH value is 5.0-7.0,23 ℃ ~ 26 ℃ of temperature; Ventilated speed of agitator 120 rpm ~ 150 rpm 1: 0.5; Be cultured to mycelium recovery rate 1.2-1.8%, medium content of reducing sugar 0.2% o'clock is at the most put jar results.Cordycepin content reaches 1.92mg/g in the mycelium, and cordycepin content reaches 0.55mg/g in the mycelium and do not add under the condition of manganese sulphate, has increased by 2.50 times after adding manganese sulphate.
Embodiment 4:
Bacterial classification: Cordyceps militaris spawn Cordyceps militaris 5.270 derives from microorganism fungus kind preservation center, Guangdong Province.
Test tube slant spawn culture (activation) (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, agar powder 15-20g, water 890-971g, its pH value is 5.0-7.0, is sub-packed in the test tube; Cordyceps militaris spawn is inserted the test tube slant under aseptic condition, 15 ~ 30 ℃ of dark cultivations 5-10 days;
Test tube strain cultivation (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, water 910-986g, its pH value is 5.0-7.0, is sub-packed in the test tube sterilization; Insert activation back bevel bacterial classification, 15 ~ 30 ℃, speed of agitator 120rpm cultivated 5 days ~ 10 days;
The triangular flask liquid seeds is cultivated (also can cultivate according to other conventional methods):
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g; Magnesium sulfate 1-5g, potassium dihydrogen phosphate 1-5g, water 910-986 g; Its pH value is 5.0-7.0, the prepared culture medium branch is packed in the 500ml conical flask into every bottled 200ml; Seal the back and under 120 ~ 130 ℃ of conditions, sterilized 18 ~ 30 minutes, take out medium, 5.0-7.0 is cooled to 20 ~ 30 ℃; Every bottle graft is gone into the cultured test tube liquid spawn of 10ml-20ml under aseptic condition, and 15 ~ 30 ℃, speed of agitator 120rpm cultivated 5 days ~ 10 days;
Seed tank culture (also can cultivate) according to other conventional methods:
Preparing culture medium: glucose 10-60g, peptone 1-10g, yeast extract 1-10g, magnesium sulfate 1-5g; Potassium dihydrogen phosphate 1-5g, water 910-986g, its pH value is 5.0-7.0, in batches sterilization; Insert cultured triangular flask liquid spawn, the volume 60%-80% that feeds intake, 15 ~ 30 ℃ of temperature; Ventilated 1: 0.5, and in the 100L seeding tank, cultivated 2-5 days for 15 ~ 30 ℃, and be extended in 10 tons of jars stir culture step by step 2-5 days;
Fermentation tank culture:
When seed tank culture to mycelium recovery rate 0.4-0.8%, change 50 tons of fermentation tank culture over to, feed intake 40 tons, feed intake (medium) is: corn flour 800-2000 kg; Soybean cake powder 200-400 kg, manganese sulphate 400 kg-3600kg, water surplus, its pH value is 5.0-7.0; 23 ℃ ~ 26 ℃ of temperature were ventilated 1: 0.5, speed of agitator 120 rpm ~ 150 rpm; Be cultured to mycelium recovery rate 1.2-1.8%, medium content of reducing sugar 0.2% o'clock is at the most put jar results.Cordycepin content reaches 2.32mg/g in the mycelium, and cordycepin content reaches 0.67mg/g in the mycelium and do not add under the condition of manganese sulphate, has increased by 2.46 times after adding manganese sulphate.