Brookfield LFRA Texture Analyzer Manual de usuario descargar pdf (Pagina 24)

Brookeld Engineering Labs., Inc. Page 24 Manual No. M/05-370-B0507

PARAMETERS: HARDNESS Force necessary to attain a given deformation

CONSISTENCY Internal strength of bonds within a product

CRISPINESS Internal ruptures and fracture of sample as struc-

ture is broken. Indicative of sample hardness

and internal bond strength

RESULTS: Chocolate Plain

HARDNESS 736 973

MEAN OF PEAKS 633.9 657.5

CONSISTENCY 2460.2 3917

CRISPINESS RATIO 1.16 1.48

CONCLUSIONS: Crispiness is an extremely complex parameter to quantify being a func-

tion of many artifact attributes, including acoustics transmitted through the

olfactory tubes. This investigation has excluded the inclusion of number

of peaks in order to simplify the equation employed, however, it should

be noted that the number of internal factors is an important consideration

whenevaluatingtheforce:deformationprolesformed.Morecomprehen-

sive equations should include the calculation of peaks per mm penetration

as well as the internal strength or bake characteristics of the product.

EMPIRICAL Resultswillbeaffectedbyalargenumberoffactorsincluding:

FACTORS: 1. Biscuit composition

2. Sample age

3. Atmospheric exposure

4. Positioning beneath probe (closeness to sample edges)

5. Surface characteristics

V.3 Review of Solid Chocolate at Ambient Temperature

PRODUCT: Milk Chocolate (single chunk 27.25mm x 7.92mm)

OBJECTIVE: To determine the optimum penetration distance to detect hardness of solid

chocolate tablet through the employment of penetration forces.

BACKGROUND: The LFRA is restricted to maximum force generation in the region of 1kg

thus the relatively solid consistency of chocolate determined that a very

smallØprobewasutilizedatminimaltestspeed.Thispermittedaow

ofmoleculeswithinthesampleandminimizedtheforcesgeneratedwhile

maximizingtheforce:deformationproleoftheproduct.

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 45 46

Sin comentarios

Brookfield LFRA Texture Analyzer Manual de usuario Pagina 24