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Title: Influence of age and Cultivar on Yield and Quality of Starch/Flour Extracted from Cassava (Manihot esculenta Crantz)
Authors: Mawutor, Agordjo Samuel
Issue Date: 16-Jun-2012
Abstract: The work aimed at evaluating the effects of age at harvest and cultivar on the yield and physico-chemical properties of cassava starch and flour. Ten cassava cultivars (Ampong, Sika bankye, Ahwengyanka, Nkabom, Sisipe 290, Bankye hemaa, Bensere, Tuaka, Doku-duade and Nyamebekyere) were used. Agronomic data were collected on plant height, canopy width, and height at branching at 4, 6, 8 and 10 Months After Planting (MAP). Data were also collected on Root yield, Harvest index, Starch content, Starch and Flour yields at 8 and 11 MAP. Physico-chemical analysis was carried out on Solubility, Swelling power and Water-binding capacity of flour and starch. The results showed that starch yield ranged from 2.52 – 5.99 at 8 MAP and 6.29 – 8.56 t/ha 11 MAP. Flour yield also ranged from 5.70 – 9.46 t/ha at 8 MAP, and from 10.82 – 12.53 t/ha at 11 MAP. Swelling power of flour ranged from 10.00 – 15.84 g/g at 8 MAP and 12.04 – 18.31 g/g at 11 MAP. Swelling power of starch also ranged from 7.20 – 12.69 g/g at 8 MAP and from 7.78 – 11.97 g/g at 11 MAP. Water-binding capacity was high and the range was 176.3 – 244.0 % at 8 MAP and 183.1 – 215.7 % at 11 MAP for flour whiles that of starch ranged from 68.01 – 77.70 % at 8 MAP and 62.61 – 76.01 % at 11 MAP. Solubility was also high for both starch and flour and the values ranged from 66.44 – 78.26 % at 8 MAP and 45.08 – 72.78 % at 11 MAP for flour whereas the values for starch were 37.68 – 76.31 % at 8 MAP and 53.04 – 74.06 % at 11 MAP. From the results obtained it was inferred that age at harvest significantly (p < 0.05) affected starch and flour yields, but not solubility, swelling power and water-binding capacity. Cultivar effect was however not significantly different.
Description: A thesis submitted to the school of Graduate Studies, Kwame Nkrumah University of Science and Technology, Kumasi, in partial fulfilment of the requirements for the degree of MSC. AGRONOMY (Plant Breeding option),2012
URI: http://hdl.handle.net/123456789/4785
Appears in Collections:College of Agric and Natural Resources

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