Carbohydrates, which are macronutrients, act as energy producers in the body, which makes them important to consume in large amounts. A 100 gram serving of kumquats contains about 16 grams of carbs. Protein is another important macronutrient that the body needs in high doses. Kumquats do not have as much protein as they do carbs, but they do have some. A 100 gram serving contains just under 2 grams. The recommended daily intake of carbs is 45 to 65 percent of your total calories. The recommended intake of protein is 46 grams for women and 56 grams for men.