Abstract
The shear rate-shear stress data for tamarind ( Tamarindus indica) kernel powder (TKP) suspensions were obtained using a concentric cylinder viscometer. The effects of concentration (2, 4, 6, 8 and 10% powder) on the flow behaviour index, consistency index, and apparent viscosity were investigated. The TKP suspensions were pseudoplastic in nature and exhibited yield stress. The Casson and Herschel-Bulkley models were applicable for the determination of yield stress (r 2 ≥ 0·98, p ≤ 0·01) and for fitting the shear rate-shear stress data (r 2 ≥ 0·98, p ≤ 0·01), respectively. The concentration of flour was found to have a pronounced effect on the rheological behaviour of the TKP suspensions.
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