This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: How does the dipping pretreatment prevent browning? What will be an ideal ... (Read 66 times)

P68T

  • Hero Member
  • *****
  • Posts: 509
on: Aug 2, 2018
How does the dipping pretreatment prevent browning?
 
  What will be an ideal response?

Question 2

Explain why tomatoes and zucchini do not require a pretreatment.
 
  What will be an ideal response?

Question 3

What causes some fruits (like apples) to brown after they have been cut and exposed to the air? What is the reaction? Browning is call enzymatic browning. Apples contain an enzyme called polyphenol
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

al

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Aug 2, 2018
Answer to Question 1

The dipping pretreatment is an acid. It lowers the pH and thus prevents the action of the enzyme that causes browning.

Answer to Question 2

Tomatoes are acidic and do not brown when dehydrated. For zucchini the answers may vary but zucchini have lower amounts of phenolic compounds and/or less phenolase.

Answer to Question 3

oxidase or phenolase. In the presence of oxygen from the air, this enzyme catalyzes the formation in the biochemical conversion of plant phenolic compounds to brown pigments known as melanins.


P68T

  • Member
  • Posts: 509
Reply 2 on: Aug 2, 2018
YES! Correct, THANKS for helping me on my review

ryansturges

  • Member
  • Posts: 338
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

A pygmy hippopotamus rests in some water to help prevent its skin from cracking at Ueno Zoo in Japan A pygmy hippopotamus rests in some water to help prevent its skin from cracking at Ueno Zoo in Japan
What are examples of ideal forms? What are examples of ideal forms?
Steel-toed shoes are a worthwhile investment to help prevent foot injury due to falling objects. ... Steel-toed shoes are a worthwhile investment to help prevent foot injury due to falling objects. ...
The air pressure going to the nozzle should be reduced to 30 psi or less to help prevent personal ... The air pressure going to the nozzle should be reduced to 30 psi or less to help prevent personal ...
Use face cradle covers to prevent the client’s skin from touching the face cradle upholstery. Use face cradle covers to prevent the client’s skin from touching the face cradle upholstery.
If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas? If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas?
Video: Endocytosis -Types and Phagocytosis

For a complete list of videos, visit our video library