Application of heat-moisture-treated banana flour as composite material in hard biscuit

Abstract

Composite biscuits made of heat-moisture-treated banana flour and wheat flour with ratio ranging from 25 to 75% were characterized for its postprandial glucose response in mice, diffraction pattern by X-ray diffraction, organoleptic and texture properties. Biscuit made of 100% wheat flour was used as a control. Composite biscuits resulted in lower blood glucose response, lower glycemic index and load due to its resistant starch and slowly digestible starch content as well as lipid-starch complex. Composite biscuit made of 75% banana flour is potential to use as a source for long lasting energy product as it displayed stable blood glucose response for 4 hours. Among sensory attributes, color and taste of biscuits were the most sensitive to the addition of the banana flour. The difference in the hardness of biscuits using instrumental analysis did not significantly affect the acceptability of texture perceived by consumers except at 75% of the banana flour.