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Numerical method for prediction of final microbial load in inoculated cylindrical cans of tomato concentrate heated in a pilot plant
Author(s) -
Rodríguez René D. Peralta,
Martínez Antonio,
Rodrigo Miguel,
Safón José
Publication year - 1996
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1046/j.1365-2621.1996.00367.x
Subject(s) - inoculation , environmental science , mathematics , horticulture , biology
A finite difference numerical method to predict temperatures and destruction of a thermally labile species in cylindrical cans of conduction heating food was applied to compute final microbial load in an inoculated 18°Brix canned tomato concentrate at pH = 4.5 processed under conditions simulating industrial practice. Predictions of product temperature and final microbial load in three can sizes compared well with experimental heat penetration data and estimation of surviving species of Bacillus coagulans ATC 8038 spores inoculated into the cans. The application of the model as an aid to establishing process schedules is illustrated for a can with a required IS 14 100 = 11.44 min. The model predicts that a 29.5 min heating time at 105.6°C would provide an IS 14 100 = 11.77 min.