Micrococcus yunnanensis and microbial agents and their application
A microbial agent, the technology of Micrococcus yunnanensis, applied in the field of agricultural biology, can solve the problems of poor effect and achieve the effect of promoting growth
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preparation example Construction
[0019] Wherein, the preparation method of the microbial agent may include: inoculating Micrococcus yunnanensis of CGMCC No. 8836 in a fermentation medium for culturing. Preferably, the number of live bacteria of Micrococcus yunnanensis with preservation number CGMCCNO.8836 can be (1-50)×10 in each gram of the microbial agent obtained by culturing. 7 CFU, more preferably (2-20)×10 7 CFU. Wherein, the cultivation temperature may be 28-35° C., and the cultivation time may be 10-50 hours.
[0020] Preferably, the preparation method of the microbial agent may also include: mixing the material obtained after culturing in the fermentation medium with an inert solid carrier and a binder; the inert solid carrier includes clay, silicon dioxide, silicon At least one of algal earth, kaolin, attapulgite, montmorillonite, bentonite, talc, white carbon black and calcium carbonate; the binder includes maltose and / or dextrin. Preferably, the amount of the inert solid carrier and the binder ...
Embodiment 1
[0026] This example is used to illustrate the cultivation of Micrococcus yunnanensis and the preparation of microbial inoculum of the present invention.
[0027] Micrococcus yunnanensis (Micrococcus yunnanensis) with preservation number CGMCCNO.8836 was inoculated into LB medium (containing 10 g / L of tryptone, 5 g / L of yeast extract and 10 g / L of NaCl), at 30 ° C and 150 rpm Cultivate to bacterial density OD under shaking / min 600 The value is 0.6-0.8, and the seed bacterial liquid is obtained.
[0028] Add 100mL of the above-mentioned seed bacteria liquid into 100L of fermentation medium (fermentation medium contains 80g / L of soybean powder, 80g / L of starch, 3g / L of sodium chloride, 3g / L of calcium carbonate, 5g / L of phosphoric acid Potassium dihydrogen and ferrous sulfate of 5g / L), cultivated at 30°C, sampled during the cultivation process and observed by microscope direct counting method, until the number of viable bacteria of Micrococcus yunnanensis per gram of culture sol...
Embodiment 2
[0030] This example is used to illustrate the cultivation of Micrococcus yunnanensis and the preparation of microbial inoculum of the present invention.
[0031] Micrococcus yunnanensis (Micrococcus yunnanensis) with preservation number CGMCCNO.8836 was inoculated into LB medium (containing 10 g / L of tryptone, 5 g / L of yeast extract and 10 g / L of NaCl), at 30 ° C and 150 rpm Cultivate to bacterial density OD under shaking / min 600 The value is 0.6-0.8, and the seed bacterial liquid is obtained.
[0032] Add 100mL of the above-mentioned seed bacteria liquid into 100L of fermentation medium (fermentation medium contains 80g / L of soybean powder, 80g / L of starch, 3g / L of sodium chloride, 3g / L of calcium carbonate, 5g / L of phosphoric acid Potassium dihydrogen and ferrous sulfate of 5g / L), cultivated at 30°C, sampled during the cultivation process and observed by microscope direct counting method, until the number of viable bacteria of Micrococcus yunnanensis per gram of culture sol...
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