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Method for producing lycopene through fermentation

A technology of lycopene and fermentation method, which is applied in the field of lycopene production by fermentation method, which can solve the problems of obstructed oxygen respiration, low rate of dissolved oxygen in the fermentation system, cumbersome process, etc., so as to alleviate the inhibition of osmotic pressure respiration and accelerate the transfer of oxygen rate, the effect of accelerating the rate of metabolic reactions

Active Publication Date: 2014-01-22
山东祥维斯生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the current production of lycopene by microbial fermentation is that microorganisms cannot accumulate lycopene at a high level, resulting in low fermentation yield and high production costs
B. trispora is a highly aerobic bacterium, and the fermentation process has a great demand for oxygen; the medium used has high solid content and high viscosity, which increases the osmotic pressure of the external environment where the bacteria are located, and the medium It also contains about 8% vegetable oil (providing double bonds for metabolism), resulting in a low dissolved oxygen rate in the fermentation system; at the same time, the production process is often affected by factors such as the speed of rotation. Abnormal, decreased biomass and metabolites
However, if the concentration of liquid alkanes is too high, it will cause damage to the bacteria, and the later separation and extraction must also undergo detoxification treatment, which is cumbersome to operate
The addition of activated carbon also has problems such as increased power loss of equipment, easy blockage of pipelines, cumbersome pre-treatment and post-advanced procedures, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] ⑴Seed cultivation

[0027] The composition of the seed medium is: corn flour 47g / L, soybean flour 23g / L, KH 2 P0 4 0.5g / L, MgSO 4 ·7H 2 O0.5g / L, VB l0.01g / L, pH6.5. The seed medium was divided into four 500ml Erlenmeyer flasks by 60ml per bottle, sealed with 8 layers of gauze, and sterilized at 115°C for 20 minutes. When inoculating, wash the spores of B. trispora (+) bacteria and B. trispora (-) bacteria on the slant of each test tube with 10ml sterile saline, break up with glass beads and filter to make spores Suspension; take 1ml of the spore suspension of B. trispora (+) each time and put it into a bottle of seed medium; take 4ml of the spore suspension of B. trispora (-) each time, and put it in order 3 bottles of seed medium. Cultivate at 26-28°C and 180-200r / min for 36-44h to obtain 1 bottle of B. trispora (+) bacteria seed solution and 3 bottles of B. trispora (-) bacteria seed solution.

[0028] ⑵Fermentation culture

[0029] The composition of the fer...

Embodiment 2

[0048] (1) Seed culture (same as Example 1)

[0049] ⑶ fermentation culture

[0050] The composition of the fermentation medium is: corn flour 18g / L, soybean flour 42.5g / L, cottonseed oil 85ml / L, KH 2 P0 4 5.5g / L,MgSO 4 7H2O1g / L, VB l 0.02g / L, pH6.5. The fermentation medium was divided into six 500ml Erlenmeyer flasks by 50ml per bottle, sealed with 8 layers of gauze, and sterilized at 115°C for 20 minutes. The mixed seed liquid is obtained by mixing the culture liquid of B. trispora (+) and B. trispora (-) strains obtained by fermenting the seed liquid at a ratio of 1:3. 6 Erlenmeyer flasks containing fermentation medium were each transferred with 8ml of mixed seed solution, and 0.15 g of betaine monohydrate was added to 3 Erlenmeyer flasks containing fermentation medium in an amount of 3 g / L as the experimental group. The other 3 triangular flasks without betaine were used as blank group. Fermentation was completed at 26-28° C. and 200-250 r / min for 120 hours. 0.046g...

Embodiment 3

[0054] (1) Seed culture (same as Example 1)

[0055] ⑷Fermentation culture

[0056] The composition of the fermentation medium is: corn flour 18g / L, soybean flour 42.5g / L, cottonseed oil 85ml / L, KH 2 P0 4 5.5g / L,MgSO 4 ·7H 2 O1g / L, VB l 0.02g / L, pH6.5. The fermentation medium was divided into six 500ml Erlenmeyer flasks by 50ml per bottle, sealed with 8 layers of gauze, and sterilized at 115°C for 20 minutes. The mixed seed liquid is obtained by mixing the culture liquid of B. trispora (+) and B. trispora (-) strains obtained by fermenting the seed liquid at a ratio of 1:3. 6 Erlenmeyer flasks containing fermentation medium were each transferred with 8ml of mixed seed liquid, and 3 g / L of betaine hydrochloride was added to 3 Erlenmeyer flasks containing fermentation medium 0.15g as the experimental group. The other 3 triangular flasks without betaine were used as blank group. Fermentation was completed at 26-28° C. and 200-250 r / min for 120 hours. 0.046g imidazole was...

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PUM

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Abstract

The invention provides a method for producing lycopene through fermentation. According to the invention, blakeslea trispora (+) and blakeslea trispora (-) strains are adopted, and slant culture is carried out. Culturing is carried out for 6-7 days under a temperature of 26-28 EG C in an incubator; after 36-46h of seed culturing, fermentation culture is carried out; betaine is added for a first time, and fermentation culture is carried out for 100-120h under a temperature of 26-28 DEG C and under a rotation speed of 200-250r / min; a blocking agent is added when fermentation is carried out for 42h, and betaine is added for a second time; and fermentation is continued until finished. A fermentation broth is filtered, and wet thalli are collected. Through vacuum lyophilization, dried thalli comprising lycopene are obtained. According to the invention, with the added betaine, thalli respiratory chain system can be effectively promoted, and thalli oxygen consumption rate can be improved. Also, osmotic pressure respiratory depression upon the thalli during the fermentation process can be effectively relieved, oxygen delivery rate can be accelerated, and energy consumption can be reduced. thalli growth rate and lycopene content are improved, and production cost is reduced. According to the method, the operation is simple. Betaine has no toxic or side effect, and is convenient and safe to use. The method is suitable for industrialized productions, and has high application values.

Description

technical field [0001] The invention relates to biological engineering, in particular to fermentation engineering, in particular to a method for producing lycopene by fermentation. Background technique [0002] Lycopene is a carotenoid, a natural pigment contained in plants, mainly found in the ripe fruit of tomato, a plant in the family Solanaceae. Studies have proved that lycopene has the effects of improving human immunity, anti-cancer, anti-oxidation, lowering blood fat, and protecting the skin. As people pay more and more attention to greenness and health, lycopene has been widely concerned by people. However, as a functional natural pigment, lycopene cannot be synthesized by human beings and needs to be supplemented through diet and other means. According to the forecast of CMR (Customer Management Relationship) International Company in the United States, the sales of lycopene products will increase by 35% annually, and the sales volume is expected to reach 20 billion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C12R1/645
Inventor 马兴群刘雨宋琦
Owner 山东祥维斯生物科技股份有限公司
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