Which preservation statement is correct for dehydration?

Which preservation statement is correct for dehydration?

• A. Dehydration removes water to preserve
• B. Refrigeration removes water
• C. Fermentation removes water
• D. Canning removes water

Answer: (A)

Dehydration preserves by removing water from foods. Lowering water activity means microbes can’t grow well and enzymes work more slowly, which prevents spoilage and extends shelf life. The drying process pulls moisture out and concentrates solutes, both of which help inhibit microbial activity. Refrigeration doesn’t remove water; it slows growth by keeping everything cold. Fermentation isn’t about removing water either—it uses microbes to transform sugars and change acidity and texture, which can preserve food in other ways. Canning preserves by heat-killing microbes and sealing to prevent contamination, while the food’s water content largely remains.

Dehydration preserves by removing water from foods. Lowering water activity means microbes can’t grow well and enzymes work more slowly, which prevents spoilage and extends shelf life. The drying process pulls moisture out and concentrates solutes, both of which help inhibit microbial activity.

Refrigeration doesn’t remove water; it slows growth by keeping everything cold. Fermentation isn’t about removing water either—it uses microbes to transform sugars and change acidity and texture, which can preserve food in other ways. Canning preserves by heat-killing microbes and sealing to prevent contamination, while the food’s water content largely remains.