Method for increasing yield of phellinus linteus total triterpene compound
A technology for total triterpenes and compounds, applied in the field of biological fermentation engineering, can solve problems such as the lack of a clear verification conclusion, and achieve the effects of promoting and improving effects, simple preparation methods, and simple processes and extraction methods.
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preparation example Construction
[0034] The preparation steps of the expansin solution described in the examples are as follows:
[0035] Soybean (Glycine max L.Merr.CV.M40; purchased from Jinan Weili Seed Industry Co., Ltd.) or cucumber (Cucumissativus L.CV.Jinnian No.6; purchased from Jinan Weili Seed Industry Co., Ltd.) seeds were subjected to 0.1 wt. % HgCl 2 Disinfect for 5 minutes, rinse with running water for 6 hours, then plant in wet vermiculite, and culture in dark at 27°C for 5 days. Cut off the top 3-4cm of the hypocotyl of the seedlings, that is, about 100g of the growth area, pre-cool in a -20°C refrigerator for 0.5h, add a homogenization buffer pre-cooled to 4°C, and after high-speed homogenization, filter with a 70μm nylon mesh. Wash the filter residue with homogenization buffer, then add the filter residue to the homogenization buffer, and stand at room temperature for 2 hours to obtain a standing solution; add the extract to the standing solution, extract at 4°C for 48 hours, filter, and th...
Embodiment 1
[0044] A liquid fermentation method for improving the output of total triterpenoids of Phellinus Phellinus by using expansin, comprising the following steps:
[0045] (1) Phellinus bacterium is inoculated on the PDA plate culture medium, carries out activation culture, culture temperature 25 ℃, culture time 5 days, then get the bacterial block 6 pieces of diameter 0.3cm, inoculate in containing PD liquid fermentation medium Carry out fermentation culture in the Erlenmeyer flask (every 500mL Erlenmeyer flask contains 150mL of PD liquid fermentation medium), the liquid fermentation culture conditions are: temperature 25°C, shaker culture for 2 days, shaker speed 150r / min, to obtain the primary fermentation liquid;
[0046] (2) Add the expansin solution to the initial fermentation broth prepared in step (1), so that the final concentration of the expansin is 0.2 mg / mL, and then continue culturing at a temperature of 25°C and a shaker speed of 150r / min. 5 days, centrifuged under t...
Embodiment 2
[0066] The liquid fermentation method as described in Example 1, the difference is that the concentration of expansin in step (2) is 0.4mg / mL;
[0067] After testing and calculation, every milliliter of fermented liquid contains 952.12 μg of total extracellular triterpenoids of Phellinus radix, that is, 952.12 mg of total extracellular triterpenoids of Phellinus radix per liter of fermented liquid; every gram of mycelia (dry weight) Contains 17.26mg of total triterpenoids in Phellinus Phellinus cells, which corresponds to 333.47mg of total triterpenoids in Phellinus Phellinus cells per liter of fermentation broth. The result is as figure 1 shown.
[0068] Therefore, the output of total triterpenoids of Phellinus per liter of fermentation broth is: 952.12mg+333.47mg=1285.59mg.
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