Ch. 28 - Applied and Industrial Microbiology

Tortora - Microbiology: An Introduction 14th Edition

Tortora14th EditionMicrobiology: An IntroductionISBN: 9780138200398Non è quello che usi tu?Cambia libro di testo

Tortora 14th Edition

Ch. 28 - Applied and Industrial Microbiology

Problema 6

Capitolo 24, Problema 6

The term 12D treatment refers to
a. Heat treatment sufficient to kill 12 bacteria.
b. The use of 12 different treatments to preserve food.
c. A 10¹² reduction in C. botulinum endospores.
d. Any process that destroys thermophilic bacteria.

Guida verificata passo dopo passo

Understand that the term '12D treatment' is related to food microbiology and sterilization processes, specifically targeting Clostridium botulinum endospores, which are highly resistant and dangerous in food safety.

Recall that 'D-value' in microbiology refers to the time required at a certain temperature to reduce the microbial population by 90%, or one log cycle (i.e., a 10-fold reduction).

Recognize that a '12D treatment' means applying a process that achieves a 12 log reduction in the number of C. botulinum endospores, which corresponds to reducing the population by a factor of 10^{12}.

Evaluate the options given: (a) refers to killing 12 bacteria, which is not the correct scale; (b) mentions 12 different treatments, which is unrelated; (c) correctly describes a 10^{12} reduction in C. botulinum endospores; (d) refers to thermophilic bacteria, which is not specific to the 12D concept.

Conclude that the correct understanding of '12D treatment' is a sterilization process that achieves a 10^{12} reduction in C. botulinum endospores, ensuring food safety by effectively eliminating this pathogen.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.

Durata del video:

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Decimal Reduction Time (D-value)

The D-value is the time required at a certain temperature to kill 90% (one log reduction) of a specific microorganism. It is a standard measure used in food microbiology to assess the effectiveness of heat treatments in reducing microbial populations.

Video consigliato:

05:48

Calculating Generation Times

12D Treatment in Food Safety

A 12D treatment refers to a heat process that achieves a 12-log (10¹²) reduction in Clostridium botulinum spores, ensuring food safety by effectively eliminating this highly heat-resistant pathogen in canned foods.

Video consigliato:

03:15

Nitrate & Nitrite in Food Preservation

Clostridium botulinum Endospores

C. botulinum produces heat-resistant endospores that can survive inadequate processing and cause botulism. Understanding their resistance is crucial for designing thermal treatments that ensure food safety.

Video consigliato:

05:35

Endospores

Pratica correlata

Domanda del libro di testo

Beer is made with water, malt, and yeast; hops are added for flavor. What is the purpose of the water, malt, and yeast? What is malt?

984

views

Domanda del libro di testo

Which one of the following is not a fuel produced by microorganisms?

a. Algal oil

b. Ethanol

c. Hydrogen

d. Methane

e. Uranium

978

views

Domanda del libro di testo

The manufacture of paper includes the use of bleach and formaldehyde-based glue. The microbial enzyme xylanase whitens paper by digesting dark lignins. Oxidase causes the fibers to stick together, and cellulase will remove ink. List three advantages of using these microbial enzymes over traditional chemical methods for making paper.

736

views

Domanda del libro di testo

Why is a bioreactor better than a large flask for industrial production of an antibiotic?

865

views

Domanda del libro di testo

Outline the steps in the production of cheese, and compare the production of hard and soft cheeses.

876

views

Domanda del libro di testo

Use the following choices to answer the following question: