FLOW PROPERTIES OF APRICOT PUREES AND CONCENTRATES

ISHS Acta Horticulturae 293: IX International Symposium on Apricot Culture

FLOW PROPERTIES OF APRICOT PUREES AND CONCENTRATES

Authors:

D. Castaldo, L. Palmieri, A. Lo Voi, L. Rillo, F. Addeo

Abstract:
Flow properties of samples of apricot purees and concentrates were investigated with concentric cylinder viscometer. Flow behaviour was studied in the range of temperatures: O° – 60° C.

The sample power law model: tau = k x gamma ⁿ where tau is shear stress is in N/m², gamma is shear rate in s^-1 k is consistency index in Nsⁿ/m² and n the flow index, described satisfactorily the flow data of apricot purees and concentrates.

Harper and EI Sahigi relationship:

BT_a = alpha x c x exp (E_a/RT)

was applied, where alpha and beta are constants and c is the concentration.

Such relationship can be used to model viscosity in engineering applications.

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