Brookfield LFRA Texture Analyzer User Manual
Page 22
Brookfield Engineering Labs., Inc.
Page
Manual No. M/05-370-B0507
Sample conditions which will effect results generated:
1. Fat content
2. Protein content
3. pH
4. Set/Stirred product
5. Syneresis and surface characteristics
6. Presence of inclusions e.g. fruit
.
RELATED TESTS:
45° cone penetrometer test utilizing hold until time function to determine
relaxation.
BIBLIOGRAPHY AND REFERENCES:
Anon. 1988. Facts About Yogurt. National Dairy Council, London.
Anon. 1996. Yogurt: A Technical Profile. National Dairy Council, Education Department.
Bylund, G. 1995. Diary Processing Handbook. Tetra Pak Processing Systems AB, Sweden.
Prentice, J. 1992. Dairy Rheology A Concise Guide. VCH Publishers, USA.
Tamime, A. and Robinson R. 1985. Yogurt Science and Technology. Pergamon Press Ltd., Oxford.
Varnam. A. and Sutherland, J. 1994. Milk and Milk Products - Technology, Chemistry and Microbioogy. Chapman and Hall,
Great Britain.
V. A Comparison of the Textural Characteristics of Biscuits (Cookies)
PRODUCT:
Biscuits
OBJECTIVE:
To compare the textural characteristics of the two different types of biscuit
while utilizing parameters generated using penetration test.
BACKGROUND:
The textural characteristics of hydroscopic foods (those which take up
water from the atmosphere) such as biscuits is of critical importance in the
assessment of their quality. The hardness of a sample is indicative of its
freshness, while the crispiness parameter evaluated within this investiga-
tion, characterizes its inner crumb structure and bake characteristics.
The test may be employed as part of any quality control procedure, wheth-
er that is to evaluate staling of product life, bake characteristics through
quantification of hardness at different points within the biscuits circumfer-
ence or any other application specific to your organization.
LFRA SETTINGS:
MODE:
Measure force in compression
PLOT:
Final
OPTION:
Normal
TRIGGER:
Auto 4g standards
DISTANCE:
3mm
SPEED:
0.5mm/s
PROBE REF:
2 mm stainless steel cylinder probe (REF: TA39)