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Objectives Taro (Colocasia esculenta) is a starchy root crop and a major food source for individuals across Pacific Islands, Asia, and Africa. As a gluten free, hypoallergenic crop with high digestibility, taro may serve as a dietary carbohydrate alternative for food production that adds nutrient value and potential health implications. Thus, this study aimed to explore the nutritional, physicochemical and functional properties of different taro varieties grown in Hawaii. Methods Five varieties of taro (Bun-long, Mana Ulu, Moi, Kauai Lehua, and Tahitian) grown in Hawaii were harvested and processed immediately. The nutritional, physicochemical, and functional properties were analyzed and compared. Results Among the five taro varieties, Moi had the highest concentrations of potassium, copper, and manganese at 1.75 g/100 g, 0.97 mg/100 g, and 12.46 mg/100 g, respectively. Tahitian exhibited the highest concentrations of iron and zinc at 7.74 mg/100 g and 13.68 mg/100 g, respectively. Tahitian, Bun-long, and Moi showed high total starch content of 40.8 g/100g,   38.9 g/100g,   and 34.1 g/100g,   respectively. Tahitian exhibited the highest water absorption capacity (WAC), oil absorption capacity (OAC), and water solubility index (WSI) at 3.48 g/g, 3.15 g/g, and 33.30 g/100g,   respectively. Total starch content of taro was significantly correlated with its WAC, OAC, emulsifying activity, water absorption index, and WSI. Conclusions These results indicate that the taro varieties can be utilized as a carbohydrate alternative for different food processing requirements based on their physicochemical and functional properties to improve nutritional value, food quality and human health. Funding Sources USDA-NIFA Hatch, USDA-ARS.

Nutritional, Physicochemical, and Functional Properties of Five Varieties of Taro (Colocasia esculenta)