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How Baking Works Chapter 9 - Fats, Oils, Emulsifiers
Food Science - Science Olympiad
28
Other
Not Applicable
01/27/2013

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Term
An example of a fat that is plastic at room temperature (70 F; 21 C) is
Definition
all-purpose shortening.
Term
An example of a fat that is workable over a wide temperature range is
Definition
all-purpose shortening.
Term
All else being equal, which is likely to result in the most tender pie crust?
Definition
liquid vegetable oil
Term
All else being equal, which is likely to result in the flakiest pie crust?
Definition
lard
Term
Which pastry is likely to have the waxiest mouthfeel?
Definition
one made with margarine that has a high melting point
Term
Which pastry would you expect to have the highest volume?
Definition
one made with margarine that has a high melting point
Term
Which provides for the most moistness over the shelf life of cakes?
Definition
high-ratio liquid shortening
Term
Which cake would you expect to be the lightest and least dense?
Definition
cake made with a high-ratio liquid shortening
Term
Which cake would you expect to be most tender?
Definition
cake made with a high-ratio liquid shortening
Term
Butter can be harder to work with than many other fats because it
Definition
is plastic over a relatively narrow temperature range.
Term
Which of the following is 100% fat?
Definition
high ratio plastic shortening
Term
Which of the following is 80% fat?
Definition
butter
Term
Which of the following does not contain air, water, or emulsifiers?
Definition
all-purpose oil
Term
Which process results in the generation of trans fats, which are considered bad for health?
Definition
Margarine contains
Term
Which of the following is an emulsifier?

a. dimethlypolysiloxane
b. BHT
c. mono- and di-glycerides
d. mono- and disaccharides
Definition
c. mono- and di-glycerides
Term
The two main reasons for choosing butter over other fats in the bakeshop is for its
Definition
flavor and mouthfeel.
Term
Hydrogenation is the addition of
Definition
hydrogen to fat or oil, making it more saturated.
Term
Hydrogenation of a fat or oil will
Definition
make a fat or oil more solid at room temperature.
Term
Hydrogenation of a fat or oil will
Definition
make a fat or oil less likely to oxidize and become rancid.
Term
Which of the following does not typically contribute to leavening in baked goods?
Definition
all-purpose oil
Term
Sweet cream butter is butter that
Definition
b. is made from cream that has not been soured or cultured with bacteria.
Term
What is in all high-ratio shortenings that is never in all-purpose shortenings?
Definition
emulsifiers
Term
24. Which of the following is not a function of an emulsifier?

a. to increase the amount of air that can be incorporated into cake batters and icings
b. to increase the amount of liquid that can be incorporated into cake batters and icings
c. to increase the tenderness of a cake
d. to increase the stability of an egg white meringue
Definition
d. to increase the stability of an egg white meringue
Term
An example of a lipid that is naturally saturated is
Definition
butter.
Term
Extra virgin olive oil is olive oil that
Definition
has the lowest level of free fatty acids, indicating that it has been carefully handled and processed to retain its fine, fruity flavor.
Term
List and briefly explain three disadvantages of butter.
Definition
Disadvantages of butter:

• It is expensive, often several times more expensive than margarine.
• It is undesirable from a health standpoint because it contains cholesterol and is high in saturated fat.
• It is difficult to work with because it has a narrow plastic range. It is too hard when used directly out of the refrigerator, and it melts quickly from the heat of hands or a warm bakeshop.
• It has a low melting point, so extra care must be taken to achieve the best volume for baked goods that rely on butter for leavening.
• It spoils faster than other fats and must be refrigerated or frozen, to prevent bacterial spoilage.
Term
Describe two reasons why butter might give you a less tenderness than an equal amount of high-ratio liquid shortening added to cake.
Definition
Reasons why butter might give a less tender cake than high-ratio liquid shortening (HRLS):

• Butter, at 80 percent fat (and about 16 percent water), is lower in tenderizers than HRLS, which contains 100 percent fat.
• Butter has no added emulsifiers, which are extremely effective tenderizers (HRLS has a high level of very effective emulsifiers added).
• Butter is more solid, so it is less effective at coating structure builders than HRLS.
• Butter provides less leavening than HRLS, and leavening contributes to tenderness.
Term
List four of the main functions butter performs in pound cake.
Definition
Butter moistens, tenderizes, contributes volume, contributes flavor, and contributes color (yellow and browning) to pound cake.
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