Brookfield LFRA Texture Analyzer Manual de usuario descargar pdf (Pagina 25)

Brookeld Engineering Labs., Inc. Page 25 Manual No. M/05-370-B0507

LFRA SETTINGS: MODE: Measureforceincompression

  PLOT: Final

  SPEED: 0.1mm/s

  DISTANCE: 2,4,or6mm

  OPTION: Normal

  TRIGGER: Auto4gpre-set

PROBE REF: Stainlesssteelneedleprobe,10°Taper(Ref:TA9)

Confectionery holding rig

METHOD: Samples were removed from wrappers and broken into individual chunks.

Theindividualchocolatepiecewasthenheldwithinjawsofconfectionery

holderclampedtoadjustablebedofLFRAapproximately2mmbelow

surface probe.

READING:

CONSISTENCY

Total +ve Area

HARDNESS

Peak +ve Force

ADHESION

Total -ve Area

ADHESION FORCE

Peak -ve Force

Note: Graph shows continuation of penetration at 2mm, 4mm

and 6mm parameter values recorded at set points for

each penetration depth.

DISCUSSION: Force:deformationcurvesgeneratedindicatealinearrelationshipbetween

forces generated and depth of penetration. It is therefore recommended

thatthe4mmmidpenetrationvalueisutilizedtopermitevaluationofa

range of chocolate types thus enabling comparison of a range of results.

PARAMETER All parameters are automatically calculated within the a test report once

COLLECTION they are selected on the test results tab. Thus calculate parameters for

each curve individually and record results.

PARAMETERS: HARDNESS Force necessary to attain a given deformation

CONSISTENCY Internal strength of bonds within a product

ADHESION Work necessary to overcome attractive forces

between surface of the food and materials with

which it comes into contact.

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Brookfield LFRA Texture Analyzer Manual de usuario Pagina 25