Final answer:
To test vitamin D levels in mushrooms, researchers can use methods like liquid chromatography-mass spectrometry (LC-MS) or UV spectrophotometry to measure the concentration of vitamin D in a mushroom sample. These methods allow for accurate determination of the amount of vitamin D present in the mushrooms.
Step-by-step explanation:
To test the vitamin D levels in mushrooms, a researcher would need to extract the vitamin D from the mushroom sample and measure its concentration. One common method for testing vitamin D levels is called liquid chromatography-mass spectrometry (LC-MS), which can accurately determine the amount of vitamin D present in a sample. Another approach is to use a UV spectrophotometer to measure the absorption of light by the mushroom extract, as vitamin D absorbs UV light. By comparing the absorption to a standard curve, the researcher can estimate the vitamin D concentration in the mushrooms.