Nutritional Value Japanese sweet potatoes contain fiber, thiamin, calcium, potassium, and vitamins A and C. Learn the good & bad for 250,000+ products. nutrition facts Calories: 176 kcal (9%) Carbohydrates: 40 g (13%) Protein: 4 g (8%) Fat: 1 g (2%) Saturated Fat: 1 g (5%) Sodium: 70 mg (3%) Potassium: 926 mg (26%) Fiber: 6 g (24%) Sugar: 13 g (14%) Vitamin A: 37475 IU (750%) Vitamin C: 38 mg (46%) Calcium: 74 mg (7%) Iron: 1 â¦ 1 cup (150 g) serving of these sweet potatoes can provide 220 calories and about 1,442 retinal equivalents of vitamin A (more than 500% of the daily value). The nutrition facts for 3.5 ounces (100 grams) of raw sweet potatoes are : Calories: 86; Water: 77%; Protein: 1.6 grams; Carbs: 20.1 grams; Sugar: 4.2 â¦ Japanese Sweet Potatoes is calculated to be 132Cal per 100 grams making 80Cal equivalent to 60.61g with 63g of mostly carbohydratesã2.4g of proteinã0.4g of fat in 200g while being rich in vitamins and minerals such as Vitamin C and Vitamin B6. Okinawan Sweet Potato Calories and Nutrition. The Japanese Sweet Potato, as you may have guessed, originated in Japan. Japanese sweet potatoes are purple on the outside and light yellow inside. The purple tuber, known as satsuma-imo, is similar to a regular sweet potato, high in antioxidants and healthier than a white potato. Japanese sweet potatoes, on the other hand, are reliable in their ability to brown and char: If you're going to make sweet potato oven fries, look no further. Calorie breakdown: 2% fat, 95% carbs, 4% protein. The satsuma-imo trumps the â¦ Common regional names of these potatoes include Kotobuki, Murasaki, and Boniato, but in some marketplaces, the roots are often labeled generically as Japanese sweet potatoes. Although they have high calorie and carbohydrate content, they are rich in fiber, potassium and vitamins A and C and have also been rumored to keep your skin looking young . Japanese sweet potato or has Latin language as Satsui Maimo is a type of sweet potato that has a short planting period about 4 until 6 months which is faster than the benefits of local sweet potatoes with planting period from 6 until 8 months. Note: nutrition information is an estimateââactual nutrition will vary based on the size of your sweet potatoes. Personalized health review for Trader Joe's Murasaki Sweet Potatoes: 120 calories, nutrition grade (N/A), problematic ingredients, and more. Meanwhile, the amount of sweet potato calories is slightly lower as well, with 94 calories in a potato compared to just 90 calories in sweet potato. Per 100 grams, there are 20.7 grams of carbs in sweet potato compared with 21.5 grams of carbs in regular potatoes. There are 317 calories in 1 cup Japanese Sweet Potato.