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Rennet - Bovine - NATUREN Premium 145 - 5 Liter - For 20000 liter


Product no.: 1401-5L, Weight: 5500 g. (Content: 5000 ml), In stock
Price for
1 item: 586,00 DKK

Picture of Rennet - Bovine - NATUREN Premium 145 - 5 Liter - For 20000 liter

Enzym til fødevarer.
Indeholder: Chymosin 85% ± 3% og Pepsin 15% ± 3%
Enzymaktivitet: 145 IMCU/ml,
138
 IMCU/ml ved BFD

Må kun anvendes til koagulering af mælk
ved fremstilling af ost.
Anbefalet dosis: 30 IMCU/liter mælk,
svarende til 2 ml til 10 liter mælk.
Maksimal dosis: 60 IMCU/liter mælk,
svarende til 4 ml til 10 liter mælk.

This rennet contains the enzymes chymosin and pepsin extracted from the fourth stomach of calves and/or adult bovines used for coagulation of milk when making cheeses.

Enzyme composition:

- Chymosin 85% ± 3%
- Pepsin 15% ± 3%

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Rennet - Bovine - NATUREN Premium 145 - 5 Liter - For 20000 liter 586,00 DKK
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This rennet contains bovine milk-clotting enzymes which is highly specific for kappa-casein, resulting in very good curd formation.


Contents: 5000 ml.

Contains the following:

CHY - Chymosin
PEP - Pepsin
Other products with similar contents:

- Hjemmeriet > Cheese > Cultures/enzymes > Rennet: Rennet - Microbial/Vegetarian - MICROLANT - 5 Liter


Usage

Rennet for coagulation of milk when making cheeses.

Learn more about rennet here (opens in new window)

The effect of adding rennet to milk is that the milk will coagulate and turn into curd. Subsequently, by dividing the curd into smaller pieces, the whey will drain from the curd.

All cheese recipes provide an indicative coagulation time - which is the time you usually need for leave the milk to coagulate. Using the stated coagulation time, and checking to see that the curd gives a clean cut with a knife, you will usually get a reasonable result, though with a slightly varying result of structure and taste from one batch to the next.

The following describes a method which you can apply in order to obtain more control over your cheese making - it will enable you to repeat a success. The method is often referred to as the flocculation method and will enable you to determine the optimum coagulation time for the cheese milk.

The optimum coagulation time depends on many conditions: the milk's content and composition of proteins and fats, the pH of the milk when the rennet is added, the activity of the rennet, whether or how the milk is pasteurized, whether the milk is homogenized, if you add calcium chloride to the cheese milk, and more. Maybe you compose the cheese milk yourself by mixing different types of milk, for example whole cream milk with a little extra cream or goat's milk, or you may mix homogenized with unhomogenized milk. All these parameters mean that the optimum coagulation time will vary.

To determine the optimal coagulation time, the flocculation time of the cheese milk must be known.

The flocculation time is the time it takes for the milk to clot after the rennet is added to the milk.

Depending on the type of cheese you want to make, different coagulation times are used, which is calculated as a factor (typically between 2 and 6) multiplied by the flocculation time.

You determine the flocculation time as follows:

Add the rennet to the milk, stir well for 20 seconds and bring the milk to a rest.

Start a timer.

Let the milk rest for 5 minutes. Then take a scalded small round glass and place the glass in the surface of the milk - the glass will float but sink slightly into the milk.

Tap / turn the glass so it rotates slightly in the milk - do this once a minute.

After about 8 minutes, you will notice that the glass will rotate less - then test by tapping / turning the glass every 30 seconds.

After 10 - 15 minutes, the glass will no longer be able to move in the milk, indicating that the curd has formed. Carefully remove the glass and stop the timer.

The timer will now show the flocculation time.

To find the optimal coagulation time, multiply a factor on the flocculation time. This factor is given in the table below. The factor is multiplied by the flocculation time, which gives the total time that must pass before the curd is cut, measured from the time the rennet was added.

Cheese type

Factor

Cutting size

Gruyére & Parmesan

2,5

5 mm

Cheddar

3

5 mm

Hard cheese

3,5

10 mm

Feta & Blue mold cheese

4

30 mm

White mold cheese

5,5

20 mm

Example: If you measure the flocculation time to 12 minutes, and if you are making a blue mold cheese, then the factor is 4 and you have to cut the curd after 48 minutes of coagulation.

The reason that the coagulation time varies with the cheese type is due to the amount of whey drained after the curd is cut will depend on the coagulation time: The longer coagulation time, the less whey is subsequently drained and thus will give a more moist cheese.

For soft cheeses, a long coagulation time and a relatively large curd cutting size are used, which causes less whey to be drained from the curd.

For hard cheeses a short coagulation time and a relatively smaller curd cutting size are used, which causes more whey to be drained from the curd.

The factors shown in the table are just what is normal practice for the different cheese types. Typically, the factor is varied by ± 0.5 to obtain a desired moist content in the resulting cheese.

If you find that the flocculation time is beyond the expected 10 - 15 minutes, you can (in next batch) adjust by changing the addition of calcium chloride and / or rennet (the more calcium chloride and / or rennet, the shorter flocculation time). Likewise, the pH of the milk will have some influence, ie. the amount of added starter culture and the time the starter culture act in the milk (maturation time) before adding the rennet. The lower the pH (i.e., the more starter culture and / or the longer the maturation time), the shorter the flocculation time.

 

Dosage

Contents of 5000 ml is intended for 20000 liter.

Dosage of rennet varies and depends on the type of cheese you are making.

For feta cheese, add 1 ml of rennet to every 5 litres of milk.

Dosing is made easy using a plastic dropper or a glass dropper


Note om dosering af bakteriekulturer og enzymer


Dosering af bakteriekulturer


Når man giver aktive mælkesyrebakterier de rette vækstbetingelser, dvs. vand, sukker/laktose og den rette temperatur, vil bakterierne formere sig med en hastighed så antallet af mælkesyrebakterier fordobles på cirka ½ time. Bakterierne omsætter sukkeret og vandet til energi og syre, som medfører at væsken bliver mere syrlig i takt med at antallet af bakterier stiger. Når antallet af bakterier efter nogle timer er vokset, er syrligheden af væsken øget, hvilket bevirker at aktiviteten af bakterierne falder. Syrligheden af væsken bliver til sidst så høj at bakterierne ikke længere trives og bakteriernes aktivitet stopper. Som følge af bakteriernes reducerede aktivitet, i takt med øget syrlighed, vil mængden af bakterier som man doserer ved f.eks. opstart af yoghurt eller ostefremstilling ikke være af afgørende betydning for syrningsforløbet. Vores opskrifter angiver ofte doseringen af bakteriekulturer i mængder af ”knivspidse”, hvilket ikke er et præcist mål, blot et udtryk for at der ikke skal bruges ret meget. Som forklaret ovenfor, hvis man laver 2 portioner og doserer dobbelt så meget kultur i den ene som i den anden vil resultatet blot være at den med mindst mængde starterkultur skal syrne ½ time længere end den anden. Man kan derfor udmærket ”strække” forbruget af kultur. Hvis en portion er angivet til at kunne række til 25 liter yoghurt, kan den fint række til mere, hvis man doserer mindre per liter og samtidig blot forlænger syrningstiden en anelse.


Doseringen af enzymer


Enzymer som osteløbe, lipase og laktase er proteiner, som har en kompleks struktur, der har den effekt at hvis enzymet rammer ind i et kaseinmolekyle (for osteløbe), et fedtstofmolekyle (for lipase) eller et laktosemolekyle (for laktase), så brydes kaseinet/fedtstoffet/laktosen op. Efter sammenstødet flyder enzymet uændret videre, rammer ind i flere andre molekyler og fortsætter således nedbrydningen.


Et enzym er ikke en organisme som formerer sig som en mælkesyrebakterie – enzymets effekt er udelukkende en følge af de tilfældige sammenstød af molekylerne. Jo flere sammenstød der sker, des hurtigere går processen og doseringen af enzymet er derfor forholdsvis afgørende for om processen forløber indenfor den tid som procesforløbet gives.


Osteløbe
: Hvis man doserer for lidt osteløbe, vil koaguleringen gå for langsomt og mælken vil ikke stivne som ventet. Doseres for meget osteløbe vil mælken stivne hurtigere, men overdosering kan give bitter eftersmag i osten. Osteløbens effekt er meget afhængig af pH og temperatur. Ved frisk mælk med pH på cirka 6,8 er den optimale temperatur 34°C. Ved syrnet mælk (pH 4-5,5) er osteløben mindre kritisk overfor temperaturen og der doseres typisk mindre osteløbe, hvis mælken er syrnet forinden (f.eks. ved friskost og mozzarella). Til de fleste typer at ost, doseres osteløbe med 1 ml per 5 liter mælk. Man kan dosere mindre osteløbe og kompensere ved at forlænge tiden for koagulering, hvilket også har den effekt, at der tilbageholdes mere vand i ostemassen og osten bliver dermed blødere.


Laktase
: For personer med intolerance overfor laktose, er det vigtigt at laktosen nedbrydes til simple sukkerstoffer, hvilket netop er laktasens effekt. Graden af intolerance er meget individuel. Nedbrydningen af laktosen tager den tid det tager, men doseringen er afgørende for denne tid. Doser efter anvisningen og brug den anviste tid, og inddrag personlige erfaringer. Laktasens effekt er meget afhængig af pH og temperatur. Dette er beskrevet nøjere under beskrivelsen af laktaseproduktet.


Lipase
: Nedbrydningen af fedtstoffer giver smag i ost. Lipasens effekt er derfor ikke vigtig for at osten skabes, men lipasen er betydende for udviklingen af smag efter at osten er fremstillet. Vil du have en almindelig smagsudvikling, doseres lipasen efter anvisning, ellers doserer du mindre eller mere efter behag. Bemærk at man normalt kun tilsætter lipase til feta og blåskimmelost. Mikroorganismerne som man tilsætter til ostemælken, udvikler nemlig også lipase. For andre typer af ost end feta og blåskimmel, vil der blive skabt tilstrækkeligt af lipase gennem mikroorganismernes virke til at smagsudviklingen vil ske passende gennem modningstiden for osten.

Storage and Durability

Store refrigerated (do not freeze).

If stored at 2-8°C the rennet is likely to be usable for at least 1 year - this is the Best Before date.

The activity of the active enzyme will decrease by 1% every month. After a year the activity has decreased by 10%, for which you can compensate for by adding a little extra rennet.

If stored at room temperature (max. 25°C) the active enzyme activity will decrease by 2% per month.

Miscellaneous

About coagulation time...

The effect of adding rennet to milk is that the milk will coagulate and turn into curd. Subsequently, by dividing the curd into smaller pieces, the whey will drain from the curd.

All cheese recipes provide an indicative coagulation time - which is the time you usually need for leave the milk to coagulate. Using the stated coagulation time, and checking to see that the curd gives a clean cut with a knife, you will usually get a reasonable result, though with a slightly varying result of structure and taste from one batch to the next.

The following describes a method which you can apply in order to obtain more control over your cheese making - it will enable you to repeat a success. The method is often referred to as the flocculation method and will enable you to determine the optimum coagulation time for the cheese milk.

The optimum coagulation time depends on many conditions: the milk's content and composition of proteins and fats, the pH of the milk when the rennet is added, the activity of the rennet, whether or how the milk is pasteurized, whether the milk is homogenized, if you add calcium chloride to the cheese milk, and more. Maybe you compose the cheese milk yourself by mixing different types of milk, for example whole cream milk with a little extra cream or goat's milk, or you may mix homogenized with unhomogenized milk. All these parameters mean that the optimum coagulation time will vary.

To determine the optimal coagulation time, the flocculation time of the cheese milk must be known.

The flocculation time is the time it takes for the milk to clot after the rennet is added to the milk.

Depending on the type of cheese you want to make, different coagulation times are used, which is calculated as a factor (typically between 2 and 6) multiplied by the flocculation time.

You determine the flocculation time as follows:

Add the rennet to the milk, stir well for 20 seconds and bring the milk to a rest.

Start a timer.

Let the milk rest for 5 minutes. Then take a scalded small round glass and place the glass in the surface of the milk - the glass will float but sink slightly into the milk.

Tap / turn the glass so it rotates slightly in the milk - do this once a minute.

After about 8 minutes, you will notice that the glass will rotate less - then test by tapping / turning the glass every 30 seconds.

After 10 - 15 minutes, the glass will no longer be able to move in the milk, indicating that the curd has formed. Carefully remove the glass and stop the timer.

The timer will now show the flocculation time.

To find the optimal coagulation time, multiply a factor on the flocculation time. This factor is given in the table below. The factor is multiplied by the flocculation time, which gives the total time that must pass before the curd is cut, measured from the time the rennet was added.

Cheese type

Factor

Cutting size

Gruyére & Parmesan

2,5

5 mm

Cheddar

3

5 mm

Hard cheese

3,5

10 mm

Feta & Blue mold cheese

4

30 mm

White mold cheese

5,5

20 mm

Example: If you measure the flocculation time to 12 minutes, and if you are making a blue mold cheese, then the factor is 4 and you have to cut the curd after 48 minutes of coagulation.

The reason that the coagulation time varies with the cheese type is due to the amount of whey drained after the curd is cut will depend on the coagulation time: The longer coagulation time, the less whey is subsequently drained and thus will give a more moist cheese.

For soft cheeses, a long coagulation time and a relatively large curd cutting size are used, which causes less whey to be drained from the curd.

For hard cheeses a short coagulation time and a relatively smaller curd cutting size are used, which causes more whey to be drained from the curd.

The factors shown in the table are just what is normal practice for the different cheese types. Typically, the factor is varied by ± 0.5 to obtain a desired moist content in the resulting cheese.

If you find that the flocculation time is beyond the expected 10 - 15 minutes, you can (in next batch) adjust by changing the addition of calcium chloride and / or rennet (the more calcium chloride and / or rennet, the shorter flocculation time). Likewise, the pH of the milk will have some influence, ie. the amount of added starter culture and the time the starter culture act in the milk (maturation time) before adding the rennet. The lower the pH (i.e., the more starter culture and / or the longer the maturation time), the shorter the flocculation time.

Culture Overview

Use the following to understand your possibilities for choosing cultures and enzymes for the production of butter, soured milk or cream, yogurt and cheese.

Read the introductory explanations first. This explains the basics you need to understand the range of possibilities.

Read this first

To make dairy products you typically need starter cultures and eventually enzymes and ripening cultures.

  • Starter cultures contain good and healthy bacteria, typically lactic acid bacteria, which will ensure that the dairy product is acidified to give the product the desired taste and texture.

  • Enzymes are proteins, like rennet to drain of whey or lipase to break down fats.

  • Ripening cultures, when given the right conditions, will change texture and taste, like mould for brie cheese. 

Bacteria strains used in starter cultures are classified based on their temperature for optimal growth:
- Mesophilic bacteria strains have an optimal growth at 20-25°C.
- Thermophilic bacteria strains have an optimal growth at 35-45°C.

A mesophilic starter culture contains mesophilic bacteria strains only.
A thermophilic starter culture contains thermophilic bacteria strains only.
A mix starter culture contains a blend of mesophilic and thermophilic bacteria strains.

In addition to the mesophilic/thermophilic classification, bacteria strains are divided into classes (O, D, L, T, Y, A and B), depending on specific properties of the bacteria strains. The O, D and L classes are mesophilic. The T, Y, A and B classes are thermophilic.

The starter culture tables show which bacteria strains each starter culture includes. Additional information is available for the starter cultures:

  • Hover over the class symbol in the top row to see the names of bacterial strains for the class.

  • Hover over the Information symbol to display overall characteristics for the culture like flavour, structure and acid production speed. Where the Information symbol is shown, this indicates that the culture is a heirloom culture, meaning that the starter culture is for fermenting a single portion of milk (used only for soured milk, creme fraiche or yogurt). Following batches can be cultured using a small portion of the previous batch. For non-heirloom cultures (also called DVS cultures), you will use a new portion of the culture each time.

  • Hover over the symbol to see the prices available for the culture. Clicking the symbol adds the specified amount to the cart.

The starter cultures contain blends of bacteria strains depending on the style of the dairy product being made. Some of the cultures are shown to contain the same strains of bacteria; however, those cultures are not identical. They each have a different ratio, percentage or contains individual sub-spieces of strains in order to give the desired result.

Bacteria strains from class D and L are heterofermentive and will produce lactic acid along with CO2 (gas) and diacetyl and/or other components which will contribute a buttery taste. All other acidifying classes are homofermentive, producing only lactid acid and will contribute a more simple acidic taste.

For ripening cultures, proteolysis specifies in which degree the microorganisms breaks down the milk proteins, which contribute to the development of flavour and texture of the product.

Lipolysis specifies in which degree the microorganisms breaks down the milk fats, thereby contributing to the development of fatty acid flavour and texture of the product.

Microorganisms

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Facts

Current storage information:

- Lotnr: 3744967, Best before date: Okt-2025

Number of units in stock: 3

Shipment weight5500g


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Rennet - Bovine - NATUREN Premium 145 - 5 Liter - For 20000 liter

Product no.: 1401-5L, Weight: 5500 g. (Content: 5000 ml), In stock
Price for
1 item: 586,00 DKK

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