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Asian Journal of Poultry Science
Year: 2015  |  Volume: 9  |  Issue: 4  |  Page No.: 203 - 212

Variation in Nutrient Composition of Cassava Pulp and its Effects on in vitro Digestibility

N. Chauynarong, M.M. Bhuiyan, U. Kanto and P.A. Iji    

Abstract: The objective of this study was to evaluate the variation in nutrient composition of cassava pulp from four different sources (starch manufacturers) in Thailand. Moisture content varied with drying process, being lowest in the oven-dried product and highest in the sample that was sun-dried. Gross energy content ranged between 16.2 and 16.84 MJ kg-1 while fat, crude protein starch contents were approximately 0.4-0.9, 2.0-4.0 and 37.0-75.0%, respectively. The sun-dried pulp from Chonburi contained the highest concentration of calcium, sodium, magnesium, iron and manganese. Phosphorus and potassium were 0.32-0.63 and 2.28-8.86 mg kg-1, respectively. The amino acid contents in cassava pulp were low, in line with the protein content (1.39-2.45%). Lysine, methionine and isoleucine were 0.82-1.24, 0.06-0.18 and 0.54 -1.40 mg g-1, respectively. Most of the Non-Starch Polysaccharides (NSP) were in insoluble forms (approximately 40-90 g kg-1) whereas soluble NSP was between 13.93 and 16.21 g kg-1. The main sugars in the insoluble NSP were xylose, galactose and mannose.

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