WO2005024001A2 - Activateur pour ferment a base de bacteries lactiques et procede de preparation d'un produit mettant en oeuvre ledit activateur - Google Patents
Activateur pour ferment a base de bacteries lactiques et procede de preparation d'un produit mettant en oeuvre ledit activateur Download PDFInfo
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- WO2005024001A2 WO2005024001A2 PCT/FR2004/002254 FR2004002254W WO2005024001A2 WO 2005024001 A2 WO2005024001 A2 WO 2005024001A2 FR 2004002254 W FR2004002254 W FR 2004002254W WO 2005024001 A2 WO2005024001 A2 WO 2005024001A2
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- Prior art keywords
- activator
- ferment
- lactic acid
- acid bacteria
- activated
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C9/00—Milk preparations; Milk powder or milk powder preparations
- A23C9/12—Fermented milk preparations; Treatment using microorganisms or enzymes
- A23C9/123—Fermented milk preparations; Treatment using microorganisms or enzymes using only microorganisms of the genus lactobacteriaceae; Yoghurt
- A23C9/1234—Fermented milk preparations; Treatment using microorganisms or enzymes using only microorganisms of the genus lactobacteriaceae; Yoghurt characterised by using a Lactobacillus sp. other than Lactobacillus Bulgaricus, including Bificlobacterium sp.
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C9/00—Milk preparations; Milk powder or milk powder preparations
- A23C9/12—Fermented milk preparations; Treatment using microorganisms or enzymes
- A23C9/123—Fermented milk preparations; Treatment using microorganisms or enzymes using only microorganisms of the genus lactobacteriaceae; Yoghurt
- A23C9/1238—Fermented milk preparations; Treatment using microorganisms or enzymes using only microorganisms of the genus lactobacteriaceae; Yoghurt using specific L. bulgaricus or S. thermophilus microorganisms; using entrapped or encapsulated yoghurt bacteria; Physical or chemical treatment of L. bulgaricus or S. thermophilus cultures; Fermentation only with L. bulgaricus or only with S. thermophilus
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/38—Chemical stimulation of growth or activity by addition of chemical compounds which are not essential growth factors; Stimulation of growth by removal of a chemical compound
Definitions
- the present invention relates to an activator for a ferment based on lactic acid bacteria, to the use of this activator for the preparation of industrial or food products and to the process for the preparation of this product characterized by the implementation of this activator.
- Lactic acid bacteria are used in many industries, especially in the food industry. They are used, among other things, to ferment, flavor, refine or texturize foods, such as dairy products or processed meats. They are also used to protect the media in which they are incorporated against contamination by other microorganisms and also used for their probiotic effect.
- the lactic acid bacteria are marketed in the form of compositions comprising mixtures of lactic acid bacteria, which is called starch or starch.
- the most used lactic acid bacteria which are present in the ferments are those belonging to the genera Lactococcus, Streptococcus, Lactobacillus, Leuconostoc, Pediococcus, Bifidobacterium, Brevibacterium, Carnobacterium, Enterococcus, Micrococcus, Vagococcus, Staphylococcus, Bacillus, Kocuria, Arthrobacter and Corynebacterium. . These lactic acid bacteria are used alone or in mixtures.
- Lactic acid bacteria may also be mentioned, such as thermophilic bacteria such as Streptococcus thermophilus, Lactobacillus casei, Lactobacillus paracasei, Lactobacillus helveticus, Lactobacillus delbrueckii subsp. Bulgaricus, Lactobacillus bulgaricus and Lactobacillus acidophilus, this list is not exhaustive. These ferments are generally in the form of concentrates either in dry form, freeze-dried, frozen or in the form of suspension and are used most often in the form of suspension. In the case of lactic acid bacteria in dry, freeze-dried or frozen form, their uses require prior suspension.
- thermophilic bacteria such as Streptococcus thermophilus
- Lactobacillus casei Lactobacillus paracasei
- Lactobacillus helveticus Lactobacillus delbrueckii subsp.
- Bulgaricus Lactobacillus bulgaricus and Lactobacillus acidophilus
- lactic acid bacteria whose properties make it possible to maintain the properties of lactic acid bacteria, especially at room temperature.
- the inventors have demonstrated that contacting a ferment based on lactic acid bacteria and with an activator according to the invention, prior to its introduction into the medium to be treated or seeded, made it possible to preserve the stability of the activity of these bacteria.
- maintaining the stability of the activity of these bacteria is meant that the bacteria retain their acidification properties of the medium to be treated or seeded while they are reactivated by the activator and are not yet seeded in said medium to be treated or to seed, without there being any cell multiplication or very little.
- the medium to be treated or seeded is meant the medium into which the ferment is introduced, whether activated or not. It may be for example a milk-based medium, or fruit juice or a soy extract.
- the present invention proposes for its first object an activator for a ferment based on lactic acid bacteria, characterized in that it comprises at least: a reducing disaccharide, a non-reducing disaccharide, an alkali metal salt and or an alkaline earth metal salt. Its second object is the use of this activator to activate a ferment based lactic acid bacteria, prior to or during direct seeding in a medium to be treated.
- the fourth subject of the present invention is a process for the preparation of a product containing at least one ferment characterized by the use of this activator or of an activated ferment according to the invention.
- the technique of direct seeding offers decisive advantages: immediate availability of the ferments under a reduced bulk, possibility of carrying out complex mixtures of species or different strains in fixed and constant proportions, increased regularity of performances compared to traditional ferments prepared on the premises of use, produced in specialized units where each stage of the process is optimized and controlled, quality of ferments rigorously defined.
- the activator according to the invention is particularly interesting in terms of the stability of a ferment with direct seeding in liquid form.
- the activator according to the invention makes it possible to reactivate a ferment in an aqueous liquid, and in particular in water. Consequently, the joint use of the activator with a ferment based on lactic acid bacteria advantageously makes it possible to preserve and standardize the metabolic activity of the activated bacteria over a prolonged period of time compared with that observed with the same ferment in a form not activated.
- the use of the activator with a ferment makes it possible to delay cell multiplication or simply to limit cell multiplication, while allowing the ferments to resume their metabolic activity and by maintaining the effective ferment activated according to the invention.
- the activator according to the invention is particularly suitable for ferments containing inter alia so-called thermophilic microorganisms having an optimum growth temperature between 35 and 45 ° C., but which can extend to temperatures of between 30 and 50 ° C. .
- the activator according to the invention has the advantage of being able to be used in all industries, in particular the food industry, pharmaceuticals, cosmetics, food, agriculture, as well as in the fields of animal nutrition, animal feed and hygiene in the broad sense, especially personal hygiene (eg toothpaste) or industrial hygiene.
- personal hygiene eg toothpaste
- the invention firstly relates to an activator for a ferment based on lactic acid bacteria, characterized in that it comprises at least: a reducing disaccharide, a non-reducing disaccharide, an alkali metal salt and or an alkaline earth metal salt.
- This activator is preferably suitable for ferments based on thermophilic lactic acid bacteria.
- the activator according to the invention contains at least one reducing disaccharide.
- lactose, lactulose, maltose, cellobiose or allolactose mention may be made of lactose, lactulose, maltose, cellobiose or allolactose.
- the reducing disaccharide may be added to the activator in the form of a pure compound or in the form of an impure mixture, as for example milk powder or cheese or caseinerie whey, which contain at least one disaccharide reducer.
- the activator according to the invention also contains at least one non-reducing disaccharide.
- non-reducing disaccharides which are suitable according to the invention, mention may be made of sucrose, threalose or raffinose.
- the activator according to the invention also contains at least one alkali metal salt and / or an alkaline earth metal salt.
- an activated ferment with the activator according to the invention is advantageously effective over a period extending up to 72 hours, more particularly over a period extending up to 48 hours, preferentially over a period extending up to 24 hours.
- a ferment based on activated bacteria according to the invention is effective over a period extending up to 72 hours while the same ferment rehydrated in water and not activated, shows a loss of significant activity beyond three hours.
- the inventors have found that the presence of the activator was advantageous in terms of balance of the microbial populations of the activated system.
- a particularly significant productivity gain can be obtained for ferments based on thermophilic bacteria.
- a ferment based on activated lactic acid bacteria according to the invention prior to its introduction into the medium to be treated restores much more rapidly an acidifying power in the medium to be treated compared with the standard ferment. ie in non-activated form.
- nutrients necessary for maintaining the metabolic activity of lactic acid bacteria usually include vitamins, yeast extracts, amino acids, peptides or proteins.
- co-factors useful for activating glycolysis may be present in the activator according to the invention.
- the activator according to the invention can be obtained by simple mixing of its components and is generally in a dry, generally powdery form. However, it is also conceivable to formulate it in freeze-dried or frozen form.
- the activator according to the invention may also be in liquid form. According to a preferred variant of the invention, the activator according to the invention is in a sterilized form and is implemented respecting this sterile appearance.
- the second subject of the present invention is the use of an activator according to the present invention for activating a ferment based on lactic acid bacteria prior to or during direct seeding in a medium to be treated or seeded.
- the contacting of said activator with the ferment based on lactic acid bacteria is carried out in a liquid medium, in particular water.
- the use of this activator to activate in a liquid medium a ferment based on lactic acid bacteria allows a continuous or discontinuous line seeding, automated, and aseptic.
- the subject of the invention is also a ferment based on activated lactic acid bacteria, characterized in that it associates with lactic acid bacteria an activator according to the invention.
- the activator according to the invention is used in an amount such that these components " are " present ⁇ in sufficient quantities to observe a significant activation of the ferment based lactic acid bacteria.
- the ratio of mass of ferment to activator mass is between 0.1 and 0.7, preferably between 0.2 and 0.6.
- the ferment based lactic acid bacteria activated according to the invention can be prepared so that the lactic acid bacteria and the activator are associated in a liquid medium, in particular water.
- the activator may be mixed with the ferment either before or at the time of its use. However, according to a preferred embodiment, it proceeds prior to the use of the ferment, its rehydration in the presence of an activator according to the present invention. Generally, this combination is carried out in a liquid medium, preferably water.
- the activator is rehydrated so that the amount of activator is between 5% and 20% by weight of aqueous suspension, preferably between 7% and 15%.
- the rehydration and the subsequent activation of the ferment can be carried out at ambient temperature, in particular at a temperature of between 15 ° C. and 25 ° C., preferably between 18 ° C. and 23 ° C. and more particularly with stirring, so that to optimize activation and homogenization over time.
- the activated ferment is then used as is for the seeding, preferably direct, of a medium to be treated.
- the lactic acid bacteria that may be associated with an activator according to the invention include all the lactic acid bacteria usually used in the industry, in particular the food industry, the pharmaceutical industry, the cosmetic industry, the food industry, the agriculture industry and the the fields of animal nutrition, animal feed and hygiene in the broad sense, especially personal hygiene (eg toothpastes) or industrial hygiene.
- the activator according to the invention is also suitable for thermophilic lactic acid bacteria.
- lactic acid bacteria mention may be made of the bacteria belonging to the genera Streptococcus, Lactococcus, Lactobacillus, Leuconostoc, Bifidobacterium and Pediococcus and in particular Lactococcus lactis, Lactococcus lactis subsp.
- Thermophilic lactic bacteria also include bacteria used in the dairy field belonging to the genera Propionibacterium, Brevibacterium and Bifidobacterium, for example Bifidobacterium lactis,
- the present invention "on" to "fourth item process for preparing a product containing at least one ferment, comprising the following steps: (i) contacting a ferment comprising at least lactic acid bacteria with an activator according to the present invention, so as to obtain a ferment in an activated form, (ii) the seeding of the medium to be treated, with said ferment in an activated form.
- the preliminary step (i) namely bringing the ferment into contact with the claimed activator, it is generally performed in a sufficient time to obtain the activated form and within a medium. liquid, in particular water.
- the corresponding suspension can be obtained by adding a liquid, preferably an aqueous medium, to the mixture of the two components (activator and ferment) or by consecutive dispersion of the two components in said liquid.
- the method according to the invention may further comprise a step (iii) of incubating said medium to be treated under conditions favorable to the metabolic activity of the lactic acid bacteria, so as to obtain a fermented product.
- the implementation of the process according to the invention can be carried out by means of a seeding device.
- the preferred seeding device for implementing the method according to the invention may be in the form of a sealed reservoir.
- the seeding device to implement the method according to the invention, can also be in the form of a disposable reservoir and / or fixed on a mobile station
- the sealed reservoir can be in the form of a pocket provided with an internal stirring system and input and output means.
- One of the input means allows the arrival of the aqueous medium in the sealed reservoir to perform step (i).
- the aqueous medium is previously sterilized, preferably it is filtered on a membrane of at most 0.45 microns, more particularly at most 0.22 microns. It should be noted that we can use tap water.
- One of the other input means allows gas to enter the sealed tank. The arrival of gas will allow to implement the internal stirring system of the receptacle.
- the internal stirring system may consist of a permeable internal pocket.
- the sealed reservoir comprises a permeable internal pocket and a closed external pocket.
- the stirring is carried out by successive injection of gas into the permeable internal bag, which allows the transfer of suspension from the internal permeable pocket to the closed external pocket.
- the stirring system is constituted by the U-shape of the sealed reservoir. In this case the stirring is carried out by successive injection of gas into an arm of the U, which allows the transfer of the suspension from one side to the other of the U.
- a gas which may be air or a gas which does not interfere with the respiration and / or oxidation of microorganisms, enzymes and bacteria, or a chemically and biologically inert gas, for example argon, nitrogen or carbon dioxide, carbon or their mixtures.
- biologically inert gas is meant a gas that does not interfere with the multiplication and degradation of microorganisms.
- the gas pressure in the sealed tank, during stirring, is less than 5 bar, preferably less than 1 bar.
- Gas injection can also be done at regular intervals of time.
- the pressurized gas is injected at a time interval of between 0.5 minutes and 60 minutes. The agitation allows the suspension of the ferments and the activator in the aqueous medium.
- step (ii) Seeding of the medium to be treated with said ferment in an activated form (step (ii)) is carried out at a flow rate of between 10 ml / min and 1000 ml / min, preferably between 100 ml / min and 500 ml / min. .
- step (ii) according to the invention is carried out at a temperature between 5 ° C and 45 ° C.
- the implementation of step (ii) according to the invention is carried out over a period extending up to 72 hours, more particularly over a period extending up to 48 hours, preferentially over a period extending up to 24 hours.
- Step (ii) can be carried out according to several variants.
- a first variant of the process in step (ii) comprises seeding the medium to be treated at one time with said ferment in an activated form. This is accomplished by emptying the tank (s) at one time. This is a batch seeding (one tank) or multi-batch (several tanks).
- a second variant of the process in step (ii) consists in seeding the medium to be treated continuously with said ferment in an activated form.
- a third variant of the process in step (ii) comprises seeding the medium to be treated discontinuously with said ferment in an activated form.
- Batch is understood to mean a seeding cycle carried out in the following manner: the medium to be treated is inoculated for a period of time, then the seeding is stopped, then the seeding is recommenced, this for several cycles.
- the seeding of the medium to be treated with said ferment in an activated form is carried out at a flow rate of between 10 ml / min and 1000 ml / min, preferably between 100 ml / min and 500 ml / min, made at regular or irregular intervals between 1 minute and 600 minutes.
- the sealed reservoir is advantageously fixed on a mobile station which can be moved on all parts of the industrial chain, before or after step (i) of the method according to the invention.
- the preferred type of reservoir for the implementation of the process according to the invention is of the disposable and / or sterile type.
- This reservoir is preferably made of a flexible material such as polypropylene, polyester, polyamide, cellulose or other flexible material compatible with food products, preferably it is polyethylene.
- a flexible material such as polypropylene, polyester, polyamide, cellulose or other flexible material compatible with food products, preferably it is polyethylene.
- the activator according to the invention in a package distinct from that of the ferment based lactic acid bacteria which it is intended to be associated or, conversely, consider a common packaging in which are present, of separately or not, the activator according to the invention and the ferment based on lactic acid bacteria.
- This second variant of packaging can also be designed so that it is suitable for the premix of the ferment and the activator and thus to the preparation of the so-called activated ferment prior to the seeding of a medium to be treated.
- Lactic acid bacteria alone or mixed, exhibit a wide variety of behaviors.
- the acidifying activity has been retained as a criterion for characterizing the activity of the bacteria.
- the acidification of a milk medium was carried out according to the following chronological order: - inoculation of a milk (pH close to 6.6), - increase of the population of lactic acid bacteria by hydrolysis of milk lactose , - production of lactic acid by lactic acid bacteria which results in a decrease in the pH of the milk medium, - stopping the growth of lactic acid bacteria which are progressively inhibited by the lactic acid formed, - continuing the production of acid up to a pH of 4.5.
- CINAC is composed of: * Ingold-type glass combined electrodes (24 pH measurement channels placed in Erlenmeyer flasks containing the inoculated medium and 8 temperature measurement channels)
- the curves represent the evolution of the pH and the speed of acidification (dpH / dt), as a function of time. They testify to the different stages of growth: rehabilitation phase, acceleration, exponential phase, slowdown, stationary phase.
- the descriptors used in the examples to characterize the kinetics of acidification are:
- Ta latency time in min (time after which the pH has varied by 0.08 upH below its initial value)
- time 4.75 time to obtain a pH of 4.75 in minutes. From all these parameters it is possible to appreciate a gain or loss of productivity.
- the lactic bacteria bacteria present in the rehydration medium were counted over time according to the following method:
- the ferment was rehydrated and activated using the activator (composition A or B below), as indicated in FIG. 1-3.
- the activated ferment thus obtained is stored for 24 hours. " During this storage, the bacterial population is measured at different storage times.This population is measured at different times ranging from 1 hour (T1 h) to 72 hours (T72h) storage.
- Dilutions are made in tryptone-salt prepared according to the following protocol: 1g of tryptone, 8.5g NaCl are put in 1 liter of water. The solution obtained is distributed in 9 ml tube, which are then treated for 15 minutes at 120 ° C. Dilutions made from these tubes are: 10 E "6; 10 E"7; E 8 , 10 E 9 , 10 E 10 . 1 ml of these dilutions is then taken and deposited in the petri dishes. The boxes are then cast with different agar plates and then incubated according to the following protocol:
- composition A Preparation of an activator (composition A)
- the activator according to the invention is prepared in a sterile 1 liter flask containing a 45 mm double-ring magnetic bar.
- the various components of this mixture are presented in Table I below:
- composition B The activator according to the invention is prepared in a sterile 1L bottle containing a 45 mm double-ring magnetic bar.
- the various components of this mixture are presented in Table I below:
- a rehydrated concentrated ferment according to the invention
- the activator described in 1-1 or 1-2 is then mixed with 50 g of freeze-dried ferment and 870 g of sterile water.
- the dry mixture is poured into water with magnetic stirring and the dissolution is done in a few minutes. This gives 1 liter of a solution which contains 50 g of lyophilized ferment.
- the rehydration temperature of the resulting mixture, namely ferment and activator is conducted according to a thermal cycle called "winter". This cycle restores the temperature rise of a set of 25 I that starts at 15 ° C and ends at a temperature of 20 ° C which is reached in about 20 hours.
- the strain tested is a thermophilic strain. It is more specifically a strain of Streptococcus thermophilus which is a lactic ferment marketed by RHODIA FOOD SAS.
- the strain of Streptococcus thermophilus is rehydrated and activated using the activator (composition A), as indicated in 1-3.
- the activated strain thus obtained is stored for 24 hours at the temperature indicated in 1-3.
- the activity of the bacterial concentrate is measured at different storage times using CINAC as indicated above. This activity is measured after 20 minutes (considered time T0), 1 hour (T1h), 3 hours (T3h), 6 hours (T6h), 12 hours (T12h), 16 hours (T16h) and 24 hours (T24h) storage.
- the rehydrated and activated strain is taken at different storage times and is seeded in skim milk at 38 ° C. Due to the concentration of the bacteria, dilution is carried out in order to seed the acidification tests (1 g of activated strain is dissolved in 200 ml of milk which is used for the measurement of activity). The seeding must be done immediately so as not to penalize the activity of the bacterial concentrate.
- a control activity is launched for each test carried out which implements 1 g of lyophilized strain in 200 ml of milk.
- the controls are direct sowing in the manufacturing milk with the strain not activated by the activator.
- the ferment tested comprises 2 strains of lactic acid bacteria, which are Streptococcus thermophilus and Lactobacillus delbrueckii bulgaricus.
- This is a ferment marketed by RHODIA FOOD SAS
- the ferment tested was rehydrated and activated using the activator of composition A, according to the method indicated in 1-3.
- the activated ferment thus obtained is stored for 24 hours at the temperature indicated in 1-3.
- the activity of the bacterial concentrate is measured at different storage times using CINAC as indicated above. This activity is measured after 1 hour (T1 h), 4 hours (T4h) and 24 hours (T24h) storage.
- the rehydrated and activated strains are taken at different storage times and are inoculated in skimmed Vz milk at 43 ° C. Due to the concentration of the bacteria, dilution is carried out in order to seed the acidification tests (1 g of activated strain is dissolved in 200 ml of milk which is used for the measurement of activity). The seeding must be done immediately so as not to penalize the activity of the bacterial concentrate.
- a control activity is launched for each test carried out which implements 1 g of lyophilized strain in 200 ml of milk. The controls are direct sowing in the manufacturing milk with the strain not activated by the activator.
- results show an increase in activity of 40 minutes for the time 4.75 between the rehydrated control (290 minutes) and the activated ferment T1 h (250 minutes). A gain in activity is observed up to 24 hours of storage: the time 4.75 is shorter. The total population and the acidifying activity is stable for 24 hours at temperature as indicated in point 1-3.
- the ferment tested comprises 4 strains of lactic acid bacteria, which are Streptococcus thermophilus, Lactobacillus delbrueckii bulgaricus, Lactobacillus acidophilus and Bifidobacterium lactis. It is a ferment marketed by RHODIA FOOD SAS.
- the ferment was rehydrated and activated with the activator (Composition B) as indicated in 1-3.
- the activated ferment thus obtained is stored for 24 hours at the temperature indicated in 1-3.
- the activity of the bacterial concentrate is measured at different storage times using CINAC as indicated above. This activity is measured after 1 hour (T1 h), 2 hours (T2h), 4 hours (T4h), 8 hours (T8h), 12 hours (T12h) and 24 hours (T24h) storage.
- the rehydrated and activated strains are taken at different storage times and are sown in skimmed milk at 43 ° C. Due to the concentration of the bacteria, dilution is carried out in order to seed the acidification tests (1 g of activated strain is dissolved in 200 ml of milk which is used for the measurement of activity). The seeding must be done immediately so as not to penalize the activity of the bacterial concentrate.
- a control activity is launched for each test carried out which implements 1 g of lyophilized strain in 200 ml of milk. The controls are direct sowing in the manufacturing milk with the strain not activated by the activator.
- results show an increase in activity of 25 minutes for the time 4.75 between the rehydrated control (300 minutes) and the activated ferment T1h (275 minutes).
- a gain activity is observed up to 24 hours of storage: the 4.75 time is shorter.
- the total population and the acidifying activity is stable for 24 hours at temperature as indicated in point 1-3.
- the fermentation support is obtained by supplementing 100 ml of skimmed UHT (Petit Vendéen) UHT milk with 3% (weight / volume) of skimmed milk powder (Eurial).
- the sterility of the solution is obtained by a pasteurization of 10 min at 90 ° C (heart).
- the fermentation support thus obtained is inoculated with the test strain or ferment at a rate of 4 units per 100 liters, and then incubated at 43 ° C. (in a water bath) until a pH of 4 is obtained. 6.
- the pH monitoring is carried out continuously thanks to the use of a CINAC (Isbaert).
- the yogurts thus obtained are placed in a ventilated oven at 6 ° C, until their analysis.
- Rheological analyzes on yogurt only the viscosity is measured.
- the viscosity measurements are carried out on fermented milks after 1 and / or 7 and / or 14 days of storage, the temperature of which is maintained at 6 ° C.
- the apparatus used is a Brookfield type VRF viscometer (Brookfield Engineering Laboratories Inc.) mounted on Helipath stand (Brookfield Engineering Laboratories Inc.). The viscometer is equipped with a C-type needle and the speed of oscillation applied to the needle is 10 rpm
- the ferment tested is identical to that used in 2-2 and comprises 2 strains of lactic acid bacteria, which are Streptococcus thermophilus and Lactobacillus delbrueckii bulgaricus.
- the ferment tested was rehydrated and activated using either the composition activator A or the composition activator B, according to the method indicated in 1-3.
- the activated ferment thus obtained is stored for 24 hours at the indicated temperature in 1-3.
- fermented milks are made at different storage times (1 hour and 24 hours), and the viscosity and the pH are measured as indicated previously in 3-1.
- the ferment tested is identical to that used in point 2-3 and comprises 4 strains of lactic acid bacteria, which are Streptococcus thermophilus, Lactobacillus delbrueckii bulgaricus, Lactobacillus acidophilus and Bifidobacterium lactis.
- the ferment tested was rehydrated and activated using the composition activator B, according to the method indicated in 1-3.
- the activated ferment thus obtained is stored for 24 hours at the temperature indicated in 1-3.
- fermented milks are made at different storage times (1 hour, 4 hours, 8 hours and 12 hours), and the viscosity and pH are measured as previously indicated in 3-1. Measurement of viscosity and pH over time according to the method described in 3-1:
- Yogurts or fermented milks made from the rehydrated ferment have properties similar to that of the control after storage for 12 hours at temperature as indicated in 1-3.
- the strains tested are probiotic strains. It is more specifically strains of Lactobacillus paracasei (LC) and Lactobacillus acidophillus (LA) which are lactic ferments marketed by RHODIA FOOD SAS strains LC and LA are rehydrated and activated with the aid of the activator (composition B ) at a rate of 4.8 E 10 9 cfu per ml of rehydration medium.
- the solutions containing the rehydration medium and each of the strains are divided into 125 ml flasks. They are placed in a room whose temperature is regulated at 18 ° C, and stirred at 150 rpm for 72 hours. During this storage, the bacterial population is determined at different storage times. This count is made after 20 minutes (considered time T0), 1 hours (T1h), 5 hours (T5h), 24 hours (T24h), 48 hours (T48h), and 72 hours (T72h) storage.
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200460007147 DE602004007147T2 (de) | 2003-09-03 | 2004-09-03 | Auf milchsäurebakterien beruhender fermentaktivator und verfahren zur herstellung eines produkts unter verwendung des aktivators |
EP04787309A EP1660640B1 (fr) | 2003-09-03 | 2004-09-03 | Activateur pour ferment a base de bacteries lactiques et procede de preparation d un produit mettant en oeuvre ledit activateur |
PL04787309T PL1660640T3 (pl) | 2003-09-03 | 2004-09-03 | Aktywator fermentu opartego na bakteriach kwasu mlekowego i sposób wytwarzania produktu z zastosowaniem wymienionego aktywatora |
DK04787309T DK1660640T3 (da) | 2003-09-03 | 2004-09-03 | Aktivator til et mælkesyrebakterie-baseret ferment og fremgangsmåde til fremstilling af et produkt ved anvendelse af aktivatoren |
US10/569,852 US9138010B2 (en) | 2003-09-03 | 2004-09-03 | Ferment activator based on lactic acid bacteria, and method of preparing a product using said activator |
AU2004270911A AU2004270911B2 (en) | 2003-09-03 | 2004-09-03 | Ferment activator based on lactic acid bacteria, and method of preparing a product using said activator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0310423A FR2859217B1 (fr) | 2003-09-03 | 2003-09-03 | Activateur pour ferment a base de bacteries lactiques et procede de preparation d'un produit mettant en oeuvre ledit activateur |
FR0310423 | 2003-09-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005024001A2 true WO2005024001A2 (fr) | 2005-03-17 |
WO2005024001A3 WO2005024001A3 (fr) | 2005-06-02 |
Family
ID=34130734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2004/002254 WO2005024001A2 (fr) | 2003-09-03 | 2004-09-03 | Activateur pour ferment a base de bacteries lactiques et procede de preparation d'un produit mettant en oeuvre ledit activateur |
Country Status (10)
Country | Link |
---|---|
US (1) | US9138010B2 (fr) |
EP (1) | EP1660640B1 (fr) |
AT (1) | ATE365204T1 (fr) |
AU (1) | AU2004270911B2 (fr) |
DE (1) | DE602004007147T2 (fr) |
DK (1) | DK1660640T3 (fr) |
ES (1) | ES2289564T3 (fr) |
FR (1) | FR2859217B1 (fr) |
PL (1) | PL1660640T3 (fr) |
WO (1) | WO2005024001A2 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012076665A1 (fr) * | 2010-12-10 | 2012-06-14 | Dsm Ip Assets B.V. | Compositions de ferments |
JP5929895B2 (ja) * | 2011-02-21 | 2016-06-08 | 旭硝子株式会社 | 乳酸の製造方法及び発酵賦活剤 |
CA2972963C (fr) * | 2015-01-14 | 2023-03-14 | Infant Bacterial Therapeutics Ab | Procede d'activation de bacteries d'acide lactique |
CN114196567B (zh) * | 2021-10-20 | 2023-01-10 | 君乐宝乳业集团有限公司 | 嗜热链球菌jmcc0031及其应用 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0059113A2 (fr) * | 1981-02-25 | 1982-09-01 | State Of Oregon By And Through The Oregon State Board Of Higher Education On Behalf Of Oregon State University | Milieu de croissance pour bactéries et méthode de culture de bactéries |
FR2814469A1 (fr) * | 2000-09-25 | 2002-03-29 | Rhodia Food | Activateur pour ferment a base de bacteries lactiques |
EP1201748A2 (fr) * | 2000-10-30 | 2002-05-02 | Roquette FrÀ¨res | Procédé de production de ferments alimentaires |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1167255B (de) | 1952-01-02 | 1964-04-02 | Erich Jancke | Kunststoffbeutel |
JPS59227241A (ja) * | 1983-06-09 | 1984-12-20 | Taishi Shokuhin Kogyo Kk | 乳酸発酵豆乳の製造法 |
EP1062873A1 (fr) * | 1999-12-13 | 2000-12-27 | N.V. Nutricia | Aliment amélioré pour bébés, hydrolysat de protéines utilisables dans un tel aliment pour bébés, et procédé de préparation de cet hydrolysat |
CA2414628A1 (fr) * | 2000-07-05 | 2002-01-10 | Danmarks Tekniske Universitet | Procede permettant d'ameliorer le rendement de la biomasse a partir de cultures bacteriennes d'acide lactique |
FR2814470B1 (fr) * | 2000-09-25 | 2004-05-14 | Rhodia Chimie Sa | Activateur pour ferment a base de bacteries lactiques et procede de preparation d'un produit lacte mettant en oeuvre ledit activateur |
US6953574B2 (en) * | 2002-06-21 | 2005-10-11 | Technology Commercialization, Inc. | Method for producing a fermented hydrolyzed medium containing microorganisms |
-
2003
- 2003-09-03 FR FR0310423A patent/FR2859217B1/fr not_active Expired - Fee Related
-
2004
- 2004-09-03 AU AU2004270911A patent/AU2004270911B2/en not_active Ceased
- 2004-09-03 WO PCT/FR2004/002254 patent/WO2005024001A2/fr active IP Right Grant
- 2004-09-03 DE DE200460007147 patent/DE602004007147T2/de not_active Expired - Lifetime
- 2004-09-03 DK DK04787309T patent/DK1660640T3/da active
- 2004-09-03 PL PL04787309T patent/PL1660640T3/pl unknown
- 2004-09-03 US US10/569,852 patent/US9138010B2/en not_active Expired - Fee Related
- 2004-09-03 EP EP04787309A patent/EP1660640B1/fr not_active Expired - Lifetime
- 2004-09-03 AT AT04787309T patent/ATE365204T1/de not_active IP Right Cessation
- 2004-09-03 ES ES04787309T patent/ES2289564T3/es not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0059113A2 (fr) * | 1981-02-25 | 1982-09-01 | State Of Oregon By And Through The Oregon State Board Of Higher Education On Behalf Of Oregon State University | Milieu de croissance pour bactéries et méthode de culture de bactéries |
FR2814469A1 (fr) * | 2000-09-25 | 2002-03-29 | Rhodia Food | Activateur pour ferment a base de bacteries lactiques |
EP1201748A2 (fr) * | 2000-10-30 | 2002-05-02 | Roquette FrÀ¨res | Procédé de production de ferments alimentaires |
Non-Patent Citations (2)
Title |
---|
DATABASE BIOSIS [Online] BIOSCIENCES INFORMATION SERVICE, PHILADELPHIA, PA, US; 1999, GOUESBET G ET AL: "Lactobacillus delbrueckii subsp. bulgaricus and heat stress" XP002285581 Database accession no. PREV200000179640 & MEDEDELINGEN FACULTEIT LANDBOUWKUNDIGE EN TOEGEPASTE BIOLOGISCHE WETENSCHAPPEN UNIVERSITEIT GENT, vol. 64, no. 5a, 1999, pages 259-265, * |
STERN N J ET AL: "LACTOBACILLUS ACIDOPHILUS UTILIZATION OF SUGARS AND PRODUCTION OF A FERMENTED SOYBEAN PRODUCT" CANADIAN INSTITUTE FOR FOOD SCIENCE AND TECHNOLOGY. JOURNAL, XX, XX, vol. 10, no. 3, 1977, pages 197-200, XP001015436 ISSN: 0315-5463 * |
Also Published As
Publication number | Publication date |
---|---|
FR2859217B1 (fr) | 2005-11-11 |
DK1660640T3 (da) | 2007-10-01 |
FR2859217A1 (fr) | 2005-03-04 |
US20070010003A1 (en) | 2007-01-11 |
DE602004007147T2 (de) | 2008-03-20 |
AU2004270911A1 (en) | 2005-03-17 |
EP1660640A2 (fr) | 2006-05-31 |
ATE365204T1 (de) | 2007-07-15 |
AU2004270911B2 (en) | 2009-08-27 |
PL1660640T3 (pl) | 2007-11-30 |
ES2289564T3 (es) | 2008-02-01 |
WO2005024001A3 (fr) | 2005-06-02 |
EP1660640B1 (fr) | 2007-06-20 |
DE602004007147D1 (de) | 2007-08-02 |
US9138010B2 (en) | 2015-09-22 |
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