This is the information I found searching the web. I use arrowroot in very small quanity as a thickener. Hope this help.
Arrowroot, raw
Scientific Name: Maranta arundinacea
NDB No: 11697 Nutrient Units Value per
100 grams of
edible portion Sample
Count Std.
Error
Proximates
Water g 80.75 2
Energy kcal 65 0
Energy kj 272 0
Protein g 4.24 2
Total lipid (fat) g 0.20 2
Carbohydrate, by difference g 13.38 0
Fiber, total dietary g 1.3 2
Ash g 1.42 2
Minerals
Calcium, Ca mg 6 2
Iron, Fe mg 2.22 2
Magnesium, Mg mg 25 2
Phosphorus, P mg 98 2
Potassium, K mg 454 2
Sodium, Na mg 26 2
Zinc, Zn mg 0.63 2
Copper, Cu mg 0.121 2
Manganese, Mn mg 0.174 2
Selenium, Se mcg 0.7 0
Vitamins
Vitamin C, total ascorbic acid mg 1.9 1
Thiamin mg 0.143 2
Riboflavin mg 0.059 2
Niacin mg 1.693 2
Pantothenic acid mg 0.292 2
Vitamin B-6 mg 0.266 2
Folate, total mcg 338 2
Folic acid mcg 0 0
Folate, food mcg 338 2
Folate, DFE mcg_DFE 338 0
Vitamin B-12 mcg 0.00 0
Vitamin A, IU IU 19 2
Vitamin A, RE mcg_RE 2 2
Lipids
Fatty acids, total saturated g 0.039 0
14:0 g 0.002 0
16:0 g 0.035 0
18:0 g 0.002 0
Fatty acids, total monounsaturated g 0.004 0
16:1 undifferentiated g 0.000 0
18:1 undifferentiated g 0.004 0
Fatty acids, total polyunsaturated g 0.092 0
18:2 undifferentiated g 0.074 0
18:3 undifferentiated g 0.018 0
Cholesterol mg 0 0
USDA Nutrient Database for Standard Reference, Release 14 (July 2001)
Hope this help