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How Baking Works Chapter 12 - Thickening and Gelling Agents
Food Science - Science Olympiad
17
Other
Not Applicable
01/27/2013

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Term
Most food-grade gelatin is extracted from
Definition
pigskins.
Term
The Bloom rating of a gelatin is a measure of its
Definition
gel strength.
Term
Bloom rating is
Definition
lower for bronze sheets and higher for silver sheets of gelatin.
Term
The weight per gelatin sheet is
Definition
higher for bronze sheets and lower for silver sheets of gelatin.
Term
Gelatin is a
Definition
protein.
Term
fresh pineapple, kiwi, and papaya juices must be heated before gelatin is added because
Definition
they contain protease enzymes that break down gelatin,
Term
Guar gum, locust bean gum, agar-agar, and carrageenan are
Definition
polysaccharides extracted from vegetable (plant) sources.
Term
Starches are
Definition
carbohydrates.
Term
Amylose is
Definition
a carbohydrate, specifically, a polysaccharide.
Term
An example of a root starch is
Definition
tapioca starch.
Term
You decide to add more sugar to a fruit pie filling thickened with cornstarch. You combine all the ingredients and cook them for the typical two-three minute boil. If the filling doesn't thicken properly after it cools, the starch is likely
Definition
undercooked.
Term
You decide to add more lemon juice to a fruit pie filling thickened with cornstarch. You combine all the ingredients and cook them for the typical two-three minute boil. If the filling doesn't thicken properly after it cools, the starch is likely
Definition
overcooked.
Term
The starch least likely to weep when frozen is
Definition
modified food starch.
Term
A starch that does not require heat and is therefore best for use with heat-sensitive fruits is
Definition
any instant starch.
Term
Your starch filling is thinner than it should be, yet it is very clear, smooth, and has a clean taste. The starch must be
Definition
overcooked.
Term
Which of the following statements is true?

a. Large amounts of sugar slows down or stops starch gelatinization. To avoid this problem, hold back some of the sugar until after the starch has fully gelatinized.
b. Large amounts of sugar speeds up the gelatinization of starches. To avoid this problem, hold back some of the starch until after the sugar has completely dissolved.
Definition
a. Large amounts of sugar slows down or stops starch gelatinization. To avoid this problem, hold back some of the sugar until after the starch has fully gelatinized.
Term
A major advantage of most modified food starches is that they are
Definition
very stable; for example, they will work well in products that are high in acid or that are frozen.
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