Premium
RELAXATION STUDIES OF ACID TYPE CHEESE TEXTURE BY A CONSTANT SPEED CONE PENETROMETRIC METHOD
Author(s) -
KOROLCZUK J.,
MAHAUT M.
Publication year - 1990
Publication title -
journal of texture studies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.593
H-Index - 54
eISSN - 1745-4603
pISSN - 0022-4901
DOI - 10.1111/j.1745-4603.1990.tb00469.x
Subject(s) - penetrometer , stress relaxation , relaxation (psychology) , penetration (warfare) , constant (computer programming) , materials science , mathematics , stress (linguistics) , composite material , thermodynamics , creep , physics , geology , soil science , computer science , psychology , social psychology , linguistics , philosophy , operations research , soil water , programming language
A constant speed cone penetrometer (Stevens, UK) connected to a microcomputer (Amstrad CPC 6128, UK) was used to analyse the tangential stress during penetration and the stress relaxation after the penetration had stopped. For acid cheese samples containing between 12 and 39% of total solids the tangential stress was between 0.3 and 14 kPa. Stress relaxation was best reproduced (coefficient of variation CV = 0.6%) by the Avrami (1939, 1940, 1941) and Nutting (1921) equations (CV = 1.4%). Using the models of Peleg (1979) and Maxwell (1868) the fit was much worse (CV = 4.9% and 9.5% respectively). Nonrelaxing stress represented 10 to 30% of the initial stress level.