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Cheese 2

Rennet & coagulation

11 multiple-choice questions on cheese: rennet & coagulation.

Question 1 of 110 of 11 answered

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What is the primary purpose of adding rennet enzyme to the cheese milk?

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All 11 questions in this quiz

What is the primary purpose of adding rennet enzyme to the cheese milk?
Which enzyme accounts for most of the clotting activity in calf rennet?
What happens to the ratio of chymosin to pepsin as the calf gets older?
Which factors affect the coagulation time?
How much faster does chymosin act when the pH changes from 6.7 to 6.4?
How much longer does coagulation take at 30 °C than at 42 °C?
Why must diluted rennet not be prepared too long before use?
What is the active component of porcine rennet?
How should saltpetre be treated before it is added to the cheese milk?
When is the rennet mixed in, relative to the other additions?
In what unit is rennet strength expressed internationally?

Sources

The questions are based on the Danish textbooks below and translated from the Danish. Main source: Mejerilære 2. Page numbers in the quizzes are the books' own; “unknown” means the page could not be established. The full tests also refer to Mælkekemi and Tetra Pak's Dairy Processing Handbook.

Waagner Nielsen, E. & Ullum, J. A. (2003). Mejerilære 1. [Dairy technology, vol. 1: general.] 4th edition, 1st printing. Erhvervsskolernes Forlag, Odense. ISBN 87-7881-397-2.
Waagner Nielsen, E. & Ullum, J. A. (2004). Mejerilære 2. [Dairy technology, vol. 2: products.] 5th edition, 1st printing (1st edition 1986). Erhvervsskolernes Forlag, Odense. ISBN 87-7881-484-7. [main source]
Stein Jensen, P. & Nielsen, J. J. (2006). Mikrobiologi. [Microbiology.] 5th edition (3rd printing 2022). Praxis Forlag A/S, Copenhagen. ISBN 978-87-7881-662-7.
Waagner Nielsen, E. & Buch Kristensen, J. M. (2006). Mikrobiologi og bioteknik. [Microbiology and Biotechnology.] 2nd edition. Erhvervsskolernes Forlag, Odense. ISBN 978-87-7881-666-5.
Stein Jensen, P. (2003). Mejeriproduktion. [Dairy Production.] 3rd edition, 1st printing. Erhvervsskolernes Forlag, Odense. ISBN 87-7881-411-1.
Statens Forsøgsmejeri [Danish State Experimental Dairy] (1961). 128. beretning. [Report no. 128.] Hillerød.

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This is an unofficial teaching and study tool. The quiz content was written for educational use on the basis of the textbooks listed, and translated from the Danish. Copyright in the original texts belongs to their authors and publishers (Erhvervsskolernes Forlag, Praxis Forlag and others) and is not affected by this.

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