Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 15: Q. 15.18 (page 517)

What are some sources of omega- 3and omega- 6-fatty acids (see Chemistry Link to Health "Omega-3Fatty Acids in Fish Oils")?

Short Answer

Expert verified
  • Sources of omega-3-fatty acids include fish, beef, milk, and yogurt.
  • Sources of omega-6-fatty acids include vegetable oils, poultry, cereals, and grape seed oil.

Step by step solution

01

Introduction

  • Fats and oils are examples of triglycerides.
  • Long, unbranched carbon chains with a carboxylic acid group at one end make up fatty acids.
  • Unsaturated fatty acids have one or more carbon-carbon double bonds, whereas saturated fatty acids have only single carbon-carbon bonds.
02

Explanation for Fatty acids.

  • Saturated and unsaturated fatty acids are the two types available.
  • Unsaturated fatty acids are formed when a lengthy chain of carboxylic acids contains double or triple bonds.
  • A fatty acid chain is said to be saturated when it contains all of the single bonds in its structure.
  • Omega-3-fatty acids have their first double bond three carbons away from the first methyl end (omega).
  • Omega-6-fatty acids are defined by the presence of the first double bond six carbons away from the first methyl end.
03

Determine the source of Omega-3 and Omega-6-fatty acids.

  • ALA is found in a variety of plants and fruits, including flaxseeds, walnuts, mustard seeds, Brussels sprouts, spinach, and cauliflower. EDA and DPA are abundant in seafood.
  • Other sources of omega-3-fatty acids include fish, beef, milk, and yogurt.
  • Nuts, eggs, whole-grain bread, numerous vegetable oils, poultry, cereals, and grape seed oil are all good sources of Omega-6-fatty acids in the diet.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Glyceryl triplymerate is found in the seeds of nurturing. Triplymerate of used as a lubricant and fragrance in soaps and shaving creams. Isopropyl myristate is used to increase absorption in creams. Draw the condensed structural formula for each of the following.

a. myristic acid

b. glyceryl trimyristate

c. isopropyl myristate

d. production of saponification of glyceryl trimyristate with KOH.

e. reactants and products for oxidation of myristyl alcohol to myristic acid.

The plastic known as PETE (polyethyleneterephthalate) is used to make plastic soft drink bottles and containers for salad dressing, shampoos, and dishwashing liquids. PETE is made from terephthalic acid and ethylene glycol. Today, PETE is the most widely recycled of all plastics. In one year, 1.5×109lbof PETE is recycled. After it is separated from other plastics, PETE can be used in polyester fabric, doormats, and tennis ball containers. The density of PETE is 1.38g/ml.

a. Draw the line-angle formula for the ester formed from one molecule of terephthalic acid and one molecule of ethylene glycol.

b. Draw the line-angle formula for the product formed when a second molecule of ethylene glycol reacts with the ester you drew in part a.

c. How many kilograms of PETE is recycled in one year?

d. What volume, in litres, of PETE is recycled in one year?

e. Suppose a landfill holds 2.7×107L of recycled PETE. If all the PETE that is recycled in a year were placed instead in landfills, how many would it fill?

15.82 Identify the components (1 to 6) contained in each of the following lipids (a to d):

1. glycerol

2. fatty acid

3. phosphate

4. amino alcohol

5. steroid nucleus

6. sphingosine

a. glycerophospholipid

b. sphingomyelin

c. aldosterone

d. linoleic acid

Identify the following features of this phospholipid, which is abundant in the myelin sheath that surrounds nerve cells:

a. Is the phospholipid formed from glycerol or sphingosine?

b. What is the fatty acid?

c. What type of bond connects the fatty acid?

d. What is the amino alcohol?

Draw the line-angle formula for each of the following fatty acids:

a. palmitic acid

b. oleic acid
See all solutions

Recommended explanations on Chemistry Textbooks

Kinetics

Read Explanation

Chemical Reactions

Read Explanation

The Earths Atmosphere

Read Explanation

Inorganic Chemistry

Read Explanation

Chemistry Branches

Read Explanation

Organic Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free