Biochemical studies on factors affecting the quality of root crops, their products and by-products
1985
Mendoza, E.M.T. | Carpena, A.L. | Rodriguez, F.M.
Proximate analysis of the storage roots of two sweet potato varieties, Tinipay and Kinabakab, at 75, 82, 90, 97, 105, 112 and 120 days after planting showed that the moisture content averaged 70% and this slightly decreased (2-3%) with age, with Tinipay showing a higher decrease. On dry weight basis, a slight increase was observed in fats and proteins and a decrease in ash and fiber contents. Search which averaged 68% slightly changed with age. For cassava cultivars Lakan and Datu, moisture was highest at 10 months with 66-69%. On dry weight basis, starch slightly changed in Datu from 6 to 13 months (66-68%) while in Lakan at 6-10 months (68-69%) and was lowest at 12 months (62%). Different varieties of cassava vary in their total HCN potential (total cyanide) and free cyanide levels in their root and leaves ranging from 4 to 7.4% and up to 21%, respectively. Detoxification treatment like blanching lowered total cyanide content while cassava leaves soaking up to 1 hr did not reduce total cyanide content
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