EFFECT OF MODIFICATION ON THE PHYSICAL PROPERTIES OF TIGER NUT STARCH (IMUMU)

ABSTRACT

Work on the effect of modification on the physical properties of tigernut starch was investigated. Starch from tigernut was isolated by wet milling process and physico-chemical properties of native and modified tigernut starches (cyperus esculetus) were analyzed. The carboxymethylated modified starch had highest amount of protein (0.45%) fibre (0.25%) and moisture content (14.96%) while natives had highest amount of fat (0.60%) ash (0.17%) starch (77.90%) and amylose 17.71%. The carbohydrate contents of native, acid modified, hydrogen peroxide and carboxymethylated modified starches were 85.27%, 84.84%, 83.74% and 83.74% respectively. The physicochemical analysis showed that native tigernut starch had the highest valve of total solid (86.60%) and PH (6.63) while hydrogen modified starch had highest amount of TTA (0.495%). The study therefore had an effect proximate and physicochemical of the starch samples.

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