character: Dr. Lee
topic: Chemical Reactions in Food Preservation Techniques
grade: 11
subject: Chemistry
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character: Ms. Thompson
topic: The Role of Antioxidants in Food Preservation
grade: 11
subject: Chemistry
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character: Mr. Patel
topic: Fermentation as a Method of Food Preservation
grade: 11
subject: Chemistry
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character: Dr. Chen
topic: Understanding pH Levels in Canning and Preservation
grade: 11
subject: Chemistry
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