Nutrients are present in all the fruits but in different quantities. Hence, it is essential to be aware of the nutritional value of fruits before we add them to our health routine. Tangerine vs White Grapefruit Nutrition will help you choose the best fruit among the two. Carbs in Tangerine and White Grapefruit are 13.34 g and 8.41 g respectively. The protein content of Tangerine and White Grapefruit is 0.81 g and 0.69 g. Protein to carb ratio of any fruit must be approximately 1.34. Protein to carb ratio of Tangerine is 0.06 and in White Grapefruit, it is 0.08. Nutritional value of fruits is incomparable to other food items. They provide all the vital nutrients required for proper functioning of our body.