Preparation of Porous Arrowroot Starch by Double Enzymatic Hydrolysis

Abstract

Abstract: Porous arrowroot starch was prepared by simultaneous hydrolysis with α-amylase and glucoamylase. The effects of enzyme dosage, glucoamylase-to-α-amylase ratio, pH, hydrolysis time and hydrolysis temperature on the oil-absorbing capacity of porous arrowroot starch were investigated. The optimal hydrolysis conditions for preparing porous arrowroot starch were determined by orthogonal array design method to be 3:1 glucoamylase-to-α-amylase ratio, 0.6% total enzyme amount, pH 5.0, 12 h hydrolysis time and 50 ℃ hydrolysis temperature. Under these conditions, the maximum oil-absorbing rate of 3:1 and excellent pore formation were achieved.

Key words: porous starch, α-amylase, glucoamylase, hydrolysis, oil-absorbing capacity

CLC Number:

TS235.5

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Preparation of Porous Arrowroot Starch by Double Enzymatic Hydrolysis

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