Taro corms (Colocasia Esculenta), also called pindalu in Nepalese society are exposed to different pretreatment such as boiling in plain water at 100ºC for 7min, boiling in 1.2% salt solution at 100ºC for 7min, boiling in 5% citric acid100ºC for 7min and frying was investigated for proximate, antinutritional and mineral content. The proximate composition of raw taro corms was found to be moisture 60.82%, crude fat 0.96%, crude protein 9.69%, total ash 3.77%, crude fiber 3.49% and carbohydrate 52.0%. Macro nutrients such as Potassium, Calcium, Phosphorous, and Sodium were found to be 620.55 mg/100g, 150.12 mg/100g, 53.72 mg/100g, and 36.62 mg/100g, respectively. Antinutritional factors of raw taro corms analyzed in this study were oxalate-280.98±0.49 mg/100g, phytate-84.90±0.74 mg/100g and tannin-47.67±0.11 mg/100g. Potassium was the most abundant macro mineral (620.55mg/100g) in the unprocessed taro corms. The effect of pretreatments and frying on calcium showed significant decrease. When compared with raw taro corms, pretreatments and frying process resulted in a significant increase in phosphorous and sodium content. Antinutritional factors were significantly reduced by the pre-treatments, and frying method appears to be more effective in reducing phytate and tannin, whereas boiling in 5% salt solution for oxalate content.
Sharma et al. (Fri,) studied this question.
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