Apple juice viscosity

USE

Apple juice is consumed as a drink.

TEST EQUIPMENT

Instrument:

• Viscometer or Rheometer

• Spring torque range: LV

• Spindle: YULA-15E

Accessories :

• Enhanced UL Adapter (ULA-EY),

• Programmable refrigerated bath TC-650SD

• Speed: 50, 75 and 100 rpm

TEST METHOD

The enhanced UL adapter can be used with various Brookfield viscometers or rheometers. In our example, we used a Brookfield DV3TLV, with RheocalcT software for automated instrument control and data acquisition. Our test temperatures of 4 ° C and 25 ° C were maintained by direct immersion of the sample chamber of the enhanced UL adapter in a TC-650SD programmable refrigerated bath. Representative data from the analyzes are presented in Figure 1.

The graph in Figure 1 shows relatively constant viscosities at 4 ° C (blue data: 2.5 cP) and 25 ° C (red data: 1.4 cP) over the speed range tested. This type of flow behavior is called "Newtonian". The graph also shows that the viscosity of apple juice is higher at 4 ° C than at 25 ° C. Increasing the temperature generally decreases the viscosity of a given substance.