Brookfield LFRA Texture Analyzer - Manual (Page 20)

Brookfield Engineering Labs., Inc. Page 0 Manual No. M/05-370-B0507
NOTE: Samples were tested with original containers as supplied. Use of
different dimension holding vessels will change results obtained, there-
fore, operators must be consistent with the test configuration used.
. READING:
. .
Peak Positive Force
HARDNESS
Total Negative Area
Adhesiveness
(Indication of Viscosity)
t
F
Peak Negative Force
ADHESIVE FORCE
Total Positive Area
Consistency
Fat Free
Low Fat
Modulus
Gradient
(from initial
curve only)
. DISCUSSION: Once the 4g trigger is attained, the forces continue to increase continu-
ously, until a surface fracture occurs. The modulus changes at this point to
a less steep gradient, and the force plateaus.
The low-fat sample appears much softer than the fat-free, having increased
flow over the plunger with a visually less grainy and more glossy fluid
appearance. The softer set is characterized by the lower forces and areas
of work measured, as well as the shallower slope. The softer set is also
characterized by the failure to form sample fracture and the absence of
peaks within the curve.
The fat-free sample has a much steeper initial gradient and subsequently
higher values for all measured parameters. Its grainy set structure is char-
acterized by the large number of peaks attained within the curve, while the
increased viscosity or spoonability is shown within the negative portion of
the curve.
. PARAMETER All parameters were automatically calculated within the Analyze a test
COLLECTION: with tables window. It is therefore necessary to calculate parameters for
each curve individually and record results.