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Clostridium tyrobutyricum and application thereof

A clostridium tyrobutyricum, reaction technology, applied in the direction of bacteria, isolated microorganisms, microorganisms, etc., to reduce the risk of allergies and reduce the effect of morbidity

Active Publication Date: 2020-01-21
NANJING TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clostridium tyrobutyricum can synthesize short-chain fatty acids such as butyric acid and acetic acid, as well as a variety of amino acids, B vitamins and vitamin K, and can decompose harmful substances such as amines, indoles, hydrogen sulfide, etc. The growth of probiotics such as lactic acid bacteria; and there is no public report on the use of Clostridium tyrobutyricum to degrade allergenic proteins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Screening method for Clostridium tyrobutyricum

[0023] Take 10 g of feces samples from Xinjiang brown cattle, mix them evenly, add them to 90 mL of PBS buffer, put them in a water bath at 100 °C for 10 min to kill non-spore bacteria, and transfer them to RCM medium for anaerobic culture at 37 °C for 24 h; In the logarithmic phase of the growth process, carbon sources such as starch and lignocellulose are added in batches, and Clostridium tyrobutyricum can decompose and use various carbon sources for enrichment culture, which can improve its own vitality and reduce E. coli in feces After culturing for 24 hours, transfer the above culture solution into TSN medium, and culture it anaerobically at 37°C for 24 hours; The resulting samples were diluted to 10 -2 、10 -4 、10 -6 , spread 100 μL on a whey protein isolate plate, and incubate at 37°C for 48 h; select colonies with hydrolysis circles, transfer them to a new whey protein isolate plate, and incubate at 37...

Embodiment 2

[0025] Example 2 Degradation effect of Clostridium tyrobutyricum suspension on α-lactalbumin and β-lactoglobulin

[0026] Drawing of the standard curve: Accurately weigh 8 mg of β-lactoglobulin standard and α-lactalbumin standard, add 2 mL of PBS to dissolve, prepare a standard stock solution of 4 mg / mL, draw an appropriate amount of stock solution, add PBS to dilute, Diluted to 4, 2, 1, 0.5, 0.25, 0.125, 0.0625, 0.03125 mg / mL concentration gradient standard solution for determination. Chromatographic column: Bio-C8 (250mm × 4.6mm, 5μm); mobile phase: 0.1% trifluoroacetic acid (TFA) water (A), 0.1% trifluoroacetic acid (TFA) acetonitrile (B), gradient elution conditions: 0-17.5 min, B 70%-50%; 17.5-20 min, B 50%-70%. Column temperature: 35°C; flow rate: 1.0 mL / min; injection volume: 10 μL; detection wavelength: 280 nm. Draw a standard curve based on standard concentration and peak area.

[0027] Clostridium tyrobutyricum ( Clostridium tyrobutyricum ) Z816 was inoculated i...

Embodiment 3

[0031] Example 3 Degradation effect of Clostridium tyrobutyricum cell disruption liquid on α-lactalbumin and β-lactoglobulin

[0032] Drawing of the standard curve: Accurately weigh 8 mg of β-lactoglobulin standard and α-lactalbumin standard, add 2 mL of PBS to dissolve, prepare a standard stock solution of 4 mg / mL, draw an appropriate amount of stock solution, add PBS to dilute, Diluted to 4, 2, 1, 0.5, 0.25, 0.125, 0.0625, 0.03125 mg / mL concentration gradient standard solution for determination. Chromatographic column: Bio-C8 (250 mm × 4.6 mm, 5 μm); mobile phase: 0.1% trifluoroacetic acid (TFA) water (A), 0.1% trifluoroacetic acid (TFA) acetonitrile (B), gradient elution Conditions: 0-17.5 min, B 70%-50%; 17.5-20 min, B 50%-70%. Column temperature: 35°C; flow rate: 1.0mL / min; injection volume: 10 μL; detection wavelength: 280 nm. Draw a standard curve based on standard concentration and peak area.

[0033] Clostridium tyrobutyricum ( Clostridium tyrobutyricum ) Z816 wa...

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PUM

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Abstract

The invention discloses a clostridium tyrobutyricum and application thereof. The reservation number of the strain is GDMCC NO: 60753, and the strain is screened from cows feces in Xinjiang province, China. After fermentation, bacteria suspension liquid and cell disruption liquid can correspondingly and effectively degrade alpha-lactalbumin and beta-milk globulin, therefore, the clostridium tyrobutyricum can be used for removing allergens in milk and reducing the incidence of allergic reactions, and can also produce low-allergic milk globulin base stocks and prepare low-allergic dairy productsto reduce risks of infant milk allergy.

Description

technical field [0001] The invention belongs to the field of food biotechnology, and in particular relates to a strain of Clostridium tyrobutyricum and its application. Background technique [0002] Cow's milk allergy (CMA) is the most common food allergy reaction, accounting for about 25% of children under 3 years of age and 9% of all confirmed food allergy cases. Milk allergy is mainly caused by milk protein. Clinically, milk allergy is an abnormal immune response to milk protein. It may be that one or more proteins have an immune effect, combine with IgE antibody and cause a rapid IgE reaction. The phenomenon of milk allergy in infants has attracted widespread attention. After research, it has been found that the main allergenic proteins in milk are α-lactalbumin and β-lactoglobulin. [0003] In order to reduce the allergenicity of milk protein, there are many methods, such as heat treatment, protease hydrolysis, degradation of lactic acid fermentation broth and so on. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C12N1/02A23L5/20C12R1/145
CPCC12N1/20C12N1/02A23L5/28C12R2001/145C12N1/205
Inventor 江凌赵倩如朱丽英张志平
Owner NANJING TECH UNIV