Question

A) ""Does fresh lemon juice contain more vitamin C than other types of lemon juice?""

b) ""Is there more vitamin C per gram in raw potato compared to boiled or baked potato?""
c) ""Does freezing vegetables or fruit juices reduce their vitamin C content?""
d) ""Does storing vegetables in a refrigerator retain more vitamin C than storing them at room temperature?""

These questions can serve as the basis for designing experiments to test these hypotheses.

Answer 1

Fresh lemon juice contains more vitamin C than other types, freezing vegetables or fruit juices can reduce their vitamin C content, and storing vegetables in a refrigerator helps retain more vitamin C.

Step-by-step explanation:

Fresh lemon juice does contain more vitamin C than other types of lemon juice. Vitamin C is an unstable compound that can be easily degraded by heat, light, and exposure to air. Fresh lemon juice, which is freshly squeezed from lemons, has higher vitamin C content compared to other types like bottled lemon juice, which undergoes processing and may lose some of its vitamin C during the manufacturing process.

Freezing vegetables or fruit juices can reduce their vitamin C content. As mentioned earlier, heat, light, and exposure to air can degrade vitamin C. Freezing slows down the degradation process but does not completely prevent it. However, the extent of vitamin C loss can vary depending on the specific vegetable or fruit.

Storing vegetables in a refrigerator can help retain more vitamin C compared to storing them at room temperature. Vitamin C is sensitive to heat and the enzymatic activity that occurs in vegetables at room temperature can lead to vitamin C degradation. Refrigeration slows down the enzymatic activity and helps preserve the vitamin C content of vegetables.