RU2427632C1 - Bifidobacterium adolescentis STRAIN USED FOR PREPARING BIFIDUS PRODUCTS - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: Bifidobacterium adolescentis 79-34 strain is recovered from bowels of a healthy infant and deposited in the State collection of microorganisms of the normal flora (SCNF) of Federal State Research Institution Gabrichevskiy Moscow Research Institution of Epidemiology and Microbiology of Federal Service for Supervision of Consumer Rights and Human Welfare, No. 237. The strain actively propagates in various nutrient mediums with accumulating a high bifidus bacteria process biomass.

EFFECT: Bifidobacterium bifidum 79-34 strain exhibits acid-forming activity, pathogen and opportunistic pathogen antagonist activity, ferments milk that enables to use it for preparing bifidus products.

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Description

The invention relates to the food, cosmetic, biotechnological and medical industries, in particular it is used for the preparation of sour-milk, fermented and non-fermented foods, hygienic and cosmetic products, biologically active additives and bacterial preparations.

Due to adverse environmental conditions, stress, prolonged antibacterial, radiation and chemotherapy, dysbiosis resulting from past diseases, the number of people suffering from disorders of the normal microflora of the body increases. For the treatment and prevention of these disorders, increasing attention is being paid to both drugs with a probiotic effect and food products containing bifidobacteria.

In the human intestine, mainly 5 species of bifidobacteria are found - B. bifidum, B. longum, B. adolescentis, B.breve and B.infantis. Of these species B.bifidum and B.longum are found with the greatest frequency in the biocenosis. Species B. adolescentis is more common in adults, and species B.breve and B.infantis - mainly in infants.

Foreign mono-and complex preparations are known - eubiotics and dairy products, which include bifidobacteria of the species B. bifidum, B.lonqum, B. adolescentis, B.breve (patent 2336886, patent 2411008, France; patent 637297, Switzerland; patent 2134179 patent 2421066, Germany; patent 05227946, patent 0430642, Japan; patent 4645667, USA, patent 6063935, Japan, patent 5922375, USA, patent 5902743, USA, patent 6746672, USA, patent 6548057, USA). In our country, for the preparation of bacterial preparations, biologically active additives, medical dietetic foods, domestic B. bifidum species of B. bifidum species 1,791,792 are used; B.lonqum B379M, I-2, I-4; B. adolescentis MC-42, G 7513; B. breve 79-119; B.infantis 79-43 (copyright certificate No. 343588, RF patent 1343421, RF patent 849779, RF patent 2108383, RF patent 2152993, patent 863639, RF patent 2120991, RF patent 2078814, RF patent 2111248).

The quality of medicinal products and preparations is largely due to the properties of the producer strain - its specific activity and adaptability. A wide range of biologically active and technologically advanced strains of bifidobacteria makes it possible to develop new mono-and complex medical nutrition products and drugs that can provide high colonization resistance of the human intestine, restore its normal microflora and reduce the incidence of various intestinal infections.

The objective of the present invention is to obtain a strain of microorganisms of the species B. adolescentis 79-34 with high biological activity, resistance to environmental conditions, with stabilizing acid formation in the entire temperature range of cell development, antagonistically active against pathogenic and conditionally pathogenic microorganisms, rapidly multiplying by artificial nutrient media.

The strain Bifidobacterium adolescentis 79-34 was isolated from the intestines of a healthy infant and deposited in the State collection of normal microflora (GKNM) FSUE MNIIEM them G.N.Gabrichevsky Rospotrebnadzor under No. 237.

The inventive strain can be used in the production of fermented milk products, fermented foods, for example: kvass, beer, etc., unfermented foods, for example: juices, drinks, etc., starter cultures for the preparation of fermented milk products and biologically active additives to food. The strain Bifidobacterium adolescentis 79-34 can also be widely used for the production of hygiene and cosmetics, for example: creams, lotions, napkins, soaps, powders, tampons, nourishing masks, gels, women's pads, cosmetic milk, various powders, etc.

In addition, the strain Bifidobacterium adolescentis 79-34 can be used in the production of bacterial preparations, in the form of suppositories, oral and other drugs.

The technical result of the claimed invention is to obtain a strain of Bifidobacterium adolescentis 79-34, which can be used as a biologically active substance in dairy, fermented and non-fermented foods, starter cultures, hygiene and cosmetics, dietary supplements and bacterial preparations. The strain Bifidobacterium adolescentis 79-34 has biologically and technologically significant properties, such as high acid-forming activity and the ability to increase microbial biomass in a short cultivation period. The strain Bifidobacterium adolescentis 79-34 is antagonistically active against pathogenic and conditionally pathogenic microorganisms. This will allow the use of the strain Bifidobacterium adolescentis 79-34 as a biologically active component in various probiotic agents that ensure the normalization of microbiocenoses of the human body, including gastrointestinal and genitourinary tracts, skin and mucous membranes, and will expand the arsenal of similar tools.

Cultural and morphological properties of the strain

Cells are gr + polymorphic bacilli with bifurcation or thickening at the 1-2 ends, in liquid nutrient media they grow along the entire height of the volume, except for the aerobiosis zone. Separately grown colonies on the hepatic nutrient medium have comet-shaped colonies. The logarithmic growth phase ends at 12-24 hours of cultivation.

Physico-biochemical properties of the strain

Indisputable, motionless anaerobic. The optimum growing temperature is 38.0 ± 0.5 ° C. Catalase does not form, gelatin does not thin. Ferments glucose with the formation of acetic and L + lactic acids, without the formation of gas, acidifying the growth medium to a pH of 4.2-3.8.

It ferments lactose, arabinose, xylose, cellobiose, inulin, melibiosis, melecitosis, raffinose, salicin, does not ferment mannitol, mannose, sorbitol, inositol. The strain fermented milk by 18-24 hours.

The strain Bifidobacterium adolescentis 79-34 has antagonistic activity against pathogenic and conditionally pathogenic microflora (Table 1).

Table 1 Antagonistic activity of strain B. adolescentis 79-34 Strain Zone of growth inhibition of test cultures mm / M ± m Sh.sonnet Sh.flexneri E.coli S.aureus Pr.vulgaris B. adolescentis 79-34 24 ± 2.8 18 ± 1.8 8 ± 2.6 20 ± 1.6 28 ± 2,4

The strain actively increases microbial mass during growth on hydrolyzate-milk medium (GM), Bifidum medium (BP), producing acids (Table 2).

table 2 The accumulation of microbial mass (CFU / ml lg 10) and the activity of acid formation (in degrees Turner) strain B. adolescentis 79-34 in the dynamics of development NUTRITION CULTIVATION TIME
BIOLOGICAL ACTIVITY 12 h 24 h 48 h CFU T ° CFU T ° CFU T ° GM 8.4 92 9.0 108 7.6 178 Bf 8.2 86 9,4 98 7.8 132

The strain maximally accumulates microbial mass by 12-24 hours, reaching 1-9 lg of 8-9 microbial cells, actively producing acids.

Thus, the proposed strain B. adolescentis 79-34 is technologically advanced, because it multiplies in various nutrient media with the accumulation of industrial biomass with a high concentration of bifidobacteria; possesses acid-forming activity, as well as antagonistic activity in relation to pathogenic and conditionally pathogenic microorganisms.

Sour-milk, fermented, non-fermented foods, hygienic, cosmetics, dietary supplements and bacterial preparations containing strain B. adolescentis 79-34 can be widely used in the food, medical, biotechnological and cosmetic industries.

The ability of the strain B. adolescentis 79-34 to increase biomass in a nutrient medium in a short time of cultivation, acid-forming activity, antagonistic activity against pathogenic and conditionally pathogenic microflora, as well as other properties useful to the human body, characteristic of the species B. adolescentis, make it is possible to use the strain as part of various corrective agents for therapeutic purposes.

Example 1. The use of strain B. adolescentis 79-34 in the composition of biologically active additives.

1 passage: lyophilized strain of B. adolescentis 79-34 in the amount of 0.1 g of dry biomass is introduced into test tubes with nutrient medium and titrated by the method of ten-fold dilutions to 10 ^-9 . Incubated at a temperature of 38.0 ± 0.5 ° C until the formation of visible growth in the last dilutions.

2 passage: the grown culture from 10 ^-7-9 dilutions in a volume of up to 10% is introduced into the nutrient medium and cultivated at a temperature of 38.0 ± 0.5 ° C for 12-24 hours until a dense growth with a visible aerobiosis zone is formed.

3 passage: the resulting biomass in an amount of up to 10% of the volume is introduced into the accumulation medium and cultured for 12-24 hours at 38.0 ± 0.5 ° C until biomass with a content of live bifidobacteria of at least 10 ⁸ / ml is obtained.

The result is a biologically active additive, which is a liquid concentrate with a high, at least 10 ⁸ / ml, content of bifidobacteria. When drying the biomass get dry biologically active additive with a bifidobacteria content of at least 10 ⁷ / ml

Example 2. The use of strain B. adolescentis 79-34 for the preparation of fermented and unfermented foods.

1 passage: lyophilized strain of B. adolescentis 79-34 in the amount of 0.1 g of dry biomass is introduced into test tubes with nutrient medium and titrated by the method of ten-fold dilutions to 10 ^-9 . Incubated at 38.0 ± 0.5 ° C until the formation of visible growth in the last dilutions.

2 passage: the grown culture from 10 ^-7-9 dilutions in a volume of up to 10% is introduced into the nutrient medium and cultivated at a temperature of 38.0 ± 0.5 ° C for 12-24 hours until a dense growth with a well-visible aerobiosis zone is formed.

3 passage: the resulting biomass in an amount of up to 10% of the volume is introduced into the accumulation medium and cultured for 12-24 hours at 38.0 ± 0.5 ° C until biomass with a content of live bifidobacteria of at least 10 ⁸ / ml is obtained.

Getting a fermented or non-fermented food product: the grown biomass is introduced into food raw materials (milk, juices, beer, kvass, etc.) in an amount up to 10% of the volume, mixed and poured into containers. The result is a product with a concentration of live bifidobacteria of at least 10 ⁶ / ml.

Example 3. The use of strain B. adolescentis 79-34 for the preparation of fermented milk product.

1 passage: lyophilized strain is introduced into the culture medium and titrated by ten-fold dilutions to 10 ^-9 . Incubated at 38.0 ± 0.5 ° C until the formation of visible growth in the last dilutions. Or dry lyophilized biomass of bifidobacteria is added in an amount of 1-2 doses in a test tube with 30 ml of culture medium. Cultivate at a temperature of 38.0 ± 0.5 ° C to obtain biomass containing live bifidobacteria not less than 10 ⁷ / ml.

2 passage: the grown culture of strain B. adolescentis 79-34 from the last dilutions or from a test tube with grown biomass is introduced into the accumulation medium with a volume of up to 10% and cultivated at a temperature of 38.0 ± 0.5 ° C until biomass with a content of bifidobacteria of at least 10 ⁸ / ml.

3 passage: the resulting biomass of strain B. adolescentis 79-34 in a volume of up to 10% is introduced into sterile milk, cultivated until a clot forms (fermented milk product). The number of passages No. 2 can be increased depending on the volume of production.

Example 4. The use of strain B. adolescentis 79-34 to obtain bacterial preparations.

The culture of the strain of the 1st or 2nd passage (example 1) is introduced into the nutrient medium, cultivated at a temperature of 38.0 ± 0.5 ° C until biomass of bifidobacteria is obtained with a living cell content of at least 10 ⁸ in 1 ml. Protective drying media (sucrose-gelatin medium, skim milk) are added to the resulting biomass. The resulting suspension is poured into ampoules, vials and other containers, frozen at a temperature of minus 35-45 ° C and lyophilized from a frozen state in vacuum drying machines. The resulting preparation contains at least 10 ⁷ living bifidobacteria cells. This content of bifidobacteria is consistent with scientific and technical documentation for a similar bifidobacterium preparation "Bifidumbacterin dry" and is sufficient to use the resulting product as a drug - eubiotics.

Example 5. The use of strain B. adolescentis 79-34 to obtain hygiene and cosmetics.

The culture of the strain of the 1st or 2nd passage (example 1) is introduced into the nutrient medium, cultivated at a temperature of 38.0 ± 0.5 ° C until biomass of bifidobacteria is obtained with a living cell content of at least 10 ⁸ in 1 ml, and dried by spraying or lyophilization.

The resulting dry biomass of bifidobacteria strain B. adolescentis 79-34 is introduced into the composition of soap or nutritious cream in an amount of not more than 1% by volume.

Claims (1)

The strain Bifidobacterium adolescentis, used to obtain bifidobacteria products, was deposited in the State collection of microorganisms of normal microflora (GKNM) FSUE "MIIII them. G.N.Gabrichevsky Rospotrebnadzor ", registration number 237.