I would like to measure sugar content in cooked sweetpotato. Please, could you give some information about the use of refractometer for measure sugar content in cooked sweetpotato?
The refractive index of a solution, which I assume is what you would want to use, is affected by all solutes, not just sugar. Thus, you wouldn't want to use the refractive index to determine sweet potato sugar content for research purposes. However, under less stringent requirements, it might be an OK technique for estimating sugar content in a sweet potato.