Moisture sorption characteristics of Mohanthal, a chickpea flour (besan) based traditional dairy product
2022
Chaudhary, MB | K Jayaraj Rao | Asha Ashok
Moisture sorption characteristics of Mohanthal, a traditional dairy product from Gujarat were investigated at temperature of 5–45 °C and water activities (aw) of 0.11–0.97. The sorption isotherms obtained were sigmoid in nature. Nine different mathematical models were found to effectively describe the moisture sorption data on the basis of regression analyses and goodness of fit. Each model was statistically evaluated by means of percent root mean square and coefficient of determination. The GAB model gave the best fit in the entire range of aw. Temperature dependence of the GAB constants and good fit were determined. Using Caurie’s model, the properties of sorbed water such as monolayer moisture content, number of adsorbed monolayers, density of sorbed water, bound water content and surface area of adsorption which decreased with an increase in temperature, were calculated. The monolayer moisture content ranged from 1.82 to 6.25 g/100 g solids in Mohanthal.Â
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