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Exam (elaborations)
FDSC 201 EXAM QUESTIONS AND ANSWERS
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---14March 20262025/2026A+
- DSC 201 
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What are the major sources of starch, gelatin, pectin and 
agar? 
Starch: potato, wheat, cassava, and corn 
Gelatin: pig skins and beef bones 
Pectin: Orange rinds and apple pomace 
Agar: Seaweed 
In our pectin candies, the sugar and corn syrup lower 
water activity, but the pectin does not. Why, despite the 
physical immobilization of water in the gel, is the water 
activity relatively high? 
Pectin is a large molecule and as such, its addition does 
not change molarit...
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