character: Dr. Smith
topic: Chemical Reactions in Food Preservation
grade: 9
subject: Chemistry
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character: Chef Emily
topic: Effects of pH on Food Spoilage
grade: 9
subject: Chemistry
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character: Professor Green
topic: Principles of Fermentation in Food Safety
grade: 9
subject: Chemistry
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character: Dr. Lopez
topic: The Role of Antioxidants in Food Products
grade: 9
subject: Chemistry
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