Quiz of chemical preservation

Description

quiz
pedangpena007
Quiz by pedangpena007, updated more than 1 year ago
pedangpena007
Created by pedangpena007 over 8 years ago
429
0

Resource summary

Question 1

Question
Before we learn about food preservatives, we have to know that all microorganisms are harmful in foods.
Answer
  • True
  • False

Question 2

Question
Food that has a high pH value give a greater effect in sulfur dioxide against the molds compared with low pH.
Answer
  • True
  • False

Question 3

Question
When we add sorbates at maximum value which is 0.2%, the taste of foods may change.
Answer
  • True
  • False

Question 4

Question
Examples of Parabens are tomato sauce, soft drinks and salad dressings.
Answer
  • True
  • False

Question 5

Question
Is it safe to use chemicals for food preservation that are not listed as GRAS by FDA regulations?
Answer
  • True
  • False

Question 6

Question
Preserve foods by using salt and sugar works by
Answer
  • lowering osmotic pressure
  • creating a hypertonic environment.
  • creating a hypotonic environment.
  • raising pH

Question 7

Question
Nitrite prevents the growth of:
Answer
  • Pseudomonas aeruginosa
  • Clostridium botulinum
  • Escherichia coli
  • ‎Salmonella

Question 8

Question
Vitamin C and vitamin E, BHA and BHT, and sulfites are all
Answer
  • antimicrobial agents
  • flavor enhancers
  • incidental food additives
  • antioxidants.

Question 9

Question
The effectiveness of many chemical preservatives depends primarily on the food
Answer
  • water content.
  • temperature.
  • pH.
  • All of the above.

Question 10

Question
Potassium sorbate is responsible for
Answer
  • stabilize red color of meat
  • block the oxidation of glucose and pyruvate at the acetate level
  • prevent gassy spoilage
  • weakening of transmembrane gradient
Show full summary Hide full summary

Similar

Translations and transformations of functions
Christine Laurich
Waves
kate.siena
Computer science quiz
Ryan Barton
AQA Biology B2 Questions
Sian Griffiths
AQA Biology B1 Questions
Bella Statham
AQA Biology B2 Questions
Bella Statham
AQA Physics P1 Quiz
Bella Statham
GCSE AQA Biology 1 Quiz
Lilac Potato
AQA GCSE Product Design Questions
Bella Statham
General Knowledge Quiz
Andrea Leyden
Biology - B2 - AQA - GCSE - Exam Style Questions
Josh Anderson